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GO-Compatible
Synchronous Bootstrap N-ch & N-ch Driver Input Voltage Range :4.0V ~ 25.0V Oscillation Frequency :300kHz (accuracy15%) High Efficiency :93% (TYP.) PWM / PFM Manual Switching Control Overcurrent Protection Circuit Built-In TSSOP-16 package
APPLICATIONS
PDAs Mobile phones Note book computers Portable audio systems Various multi-function power supplies
May 23, 2005 V7
GENERAL DESCRIPTION
The XC9213 series is N-ch N-ch drive, synchronous, step-down DC/DC controller IC with a built-in bootstrap driver circuit. Output will be stable no matter which load capacitors, including low ESR capacitors, are used. Resistance (RSENSE) of about several 10m will be required as a current sense. The phase compensation is also run when a low ESR capacitor is used. In addition, the circuit is double protected by the ways of limiting the current while detecting overshoot current and making output shutdown at any given timing by a protection time setting capacitor (CPRO). The output voltage can be set freely within a range of 1.5V~15.0V with 1.0V (accuracy2%) of internal reference voltage by using externally connected resistors (RFB1, 2). Synchronous rectification PWM control can be switched to non-synchronous current limit PFM/PWM automatic switchable control (=voltage between RSENSE pins) by using the MODE pin. The series has a built-in voltage detector for monitoring a selected voltage by external resistors. During stand-by (CE pin = low) all circuits are shutdown to reduce current consumption to as low as 4.0A or less.
FEATURES
Input Voltage Range :4.0V ~ 25.0V Reference voltage : 1.0V (2%) Oscillation Frequency :300kHz (15%) Output Current Control :More than 5A (VIN=5.0V, VOUT=3.3V) :PWM/PFM manual -switching control
sense 170mV (TYP.). Shutdown time can be adjusted by CPRO.
Output Voltage Range :1.5V ~ 15.0V externally set
Current Limiter, Protection :Current limit operates at voltage
High Efficiency
:93% [TYP. PWM Mode @ VIN=5.0V,
VOUT = 3.3V, IOUT=1A]
Detect Voltage Function :Detects 0.9V / Open-drain output Stand-by Current Load Capacitor Package :ISTB = 4.0A (MAX.) :Low ESR capacitor compatible :TSSOP-16
TYPICAL APPLICATION CIRCUIT
SD2 RSENSE VIN VDIN VIN CIN VDOUT VDIN VDOUT VL CVL CSS CSS CPRO XC9213 FB EXT2 RFB2 Tr2 VSENSE BST EXT1 LX SD1 CFB Tr1 L RFB1 CL VOUT CBST
TYPICAL PERFORMANCE CHARACTERISTICS
AGND MODE CE PGND CPRO
Data Sheet ud200528
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XC9213 Series
PIN CONFIGURATION
1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9
TSSOP-16 (TOP VIEW)
PIN ASSIGNMENT
PIN NUMBER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PIN NAME VIN VSENSE VL CE AGND MODE CPRO CSS VDIN FB VDOUT PGND EXT2 LX EXT1 BST Input Voltage Current Detection Local Power Supply Chip Enable Analog Ground PWM / Current Limit PFM Switch Protection Time Setting Capacitor Connection Soft-start Capacitor Connection Voltage Detector Input (0.9V) Output Voltage Setting Resistor Connection Voltage Detector Output (Open-Drain) Power Ground Low Side N-ch Driver Transistor Coil Connection High Side N-ch Driver Transistor Bootstrap < Set output voltage freely by split resistors > FUNCTION
CE PIN & MODE PIN FUNCTION
CE PIN H L MODE PIN H L OPERATIONAL STATE Operation Shut down OPERATIONAL STATE Synchronous PWM Control Non-Synchronous PWM / Current Limit PFM Automatic Switching Control
PRODUCT CLASSIFICATION
Ordering Information XC9213B
DESIGNATOR DESCRIPTION Reference Voltage Oscillation Frequency Package Device Orientation SYMBOL 10 3 V R L : 300kHz : TSSOP-16 : Embossed tape, standard feed : Embossed tape, reverse feed DESCRIPTION : 1.0V (Fixed)
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Data Sheet ud200528
XC9213 Series
PACKAGING INFORMATION
TSSOP-16
0. 22
+0. 1 - 0. 05
4. 4 0. 2
5. 1 0. 2
1. 15 0. 1
0. 22
+0. 1 - 0. 05
65 0.
MARKING RULE
TSSOP-16 Represents product series
MARK 2 1 3 B PRODUCT SERIES XC9213B103VX
0. 1 0. 05
6. 4 0. 2
16
15
0. 5 0. 2
14
13
12
11
10
9
abc
d
Represents standard voltage
MARK 1 0 VOLTAGE (V) 1.0 PRODUCT SERIES XC9213B103VX
1 2
3
4
5
6
7
8
Represents oscillation frequency
MARK 3 OSCILLATION FREQUENCY 300kHz PRODUCT SERIES XC9213B103VX
TSSOP-16 (TOP VIEW)
Data Sheet ud200528
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XC9213 Series
ABSOLUTE MAXIMUM RATINGS
Ta = 25OC
PARAMETER VIN Pin Voltage VSENSE Pin Voltage VL Pin Voltage CE Pin Voltage (*) MODE Pin Voltage (*) CPRO Pin Voltage CSS Pin Voltage VDIN Pin Voltage FB Pin Voltage VDOUT Pin Voltage EXT2 Pin Voltage Lx Pin Voltage EXT1 Pin Voltage BST Pin Voltage EXT1 Pin Current EXT2 Pin Current Lx Pin Current Power Dissipation Operational Temperature Range Storage Temperature Range SYMBOL VIN VSENSE VL CE MODE CPRO CSS VDIN FB VDOUT EXT2 Lx EXT1 BST IEXT1 IEXT2 ILx Pd Topr Tstg RATINGS - 0.3 ~ 30.0 - 0.3 ~ 30.0 - 0.3 ~ 6.0 - 0.3 ~ 30.0 - 0.3 ~ 30.0 - 0.3 ~ 6.0 - 0.3 ~ 6.0 - 0.3 ~ 6.0 - 0.3 ~ 6.0 - 0.3 ~ 30.0 - 0.3 ~ 6.0 - 0.3 ~ 30.0 - 0.3 ~ 30.0 - 0.3 ~ 30.0 100 100 100 350 - 40 ~ + 85 - 55 ~ + 125 UNITS V V V V V V V V V V V V V V mA mA mA mW O C O C
(*) CE, MODE pin voltage 1) 1.4VHigh Level6V The CE pin and the MODE pin can be connected directly to the high level power supply.
2) 6V < High Level < 30V The CE pin and the MODE pin should be connected to over 1k resistor when connecting
1.4V6V1k
IC Inside CE or MODE
IC Inside CE or MODE
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Data Sheet ud200528
XC9213 Series
ELECTRICAL CHARACTERISTICS
XC9213B103 (FOSC = 300kHz)
PARAMETER Input Voltage (*2) Output Voltage Setting Range FB Control Voltage U.V.L.O. Voltage Supply Current 1 Supply Current 2 Stand-by Current Oscillation Frequency Maximum Duty Ratio 1 Maximum Duty Ratio 2 PFM Duty Ratio Sense Voltage CPRO time SYMBOL VIN VOUTSET VFB UVLO IDD1 IDD2 ISTB FOSC MAXDTY1 MAXDTY2 PFMDTY VSENSE TPRO Voltage which EXT1 pin starts oscillation CE=VIN, FB=0.9V CE=VIN, FB=1.1V CE=FB=0V CE=VIN, FB=0.9V CE=VIN, FB=0.9V CE=VIN, FB=1.1V With external components, VOUT=3V, MODE=0V, IOUT=1mA, No RSENSE Voltage which EXT1 pin stops oscillation CPRO=4700pF, VSENSE=0V 0.5V, Time until VDOUT inverts H to L With external components, Soft-Start Time Short Protection Circuit Operating Voltage Efficiency CE "H" Voltage CE "L" Voltage MODE "H" Voltage MODE "L" Voltage EXT1 "H" ON Resistance EXT1 "L" ON Resistance EXT2 "H" ON Resistance EXT2 "L" ON Resistance Dead Time 1 Dead Time 2 CE "H" Current CE "L" Current MODE "H" Current MODE "L" Current CSS Current FB "H" Current FB "L" Current TSS CSS=4700pF, CE=0V 3V, Time until voltage becomes VOUT x 0.95 VSHORT EFFI VCEH VCEL VMODEH VMODEL REXT1H REXT1L REXT2H REXT2L TDT1 TDT2 ICEH ICEL IMODEH IMODEL ICSS IFBH IFBL VIN-VSENSE:0.3V fixed, FB:SWEEP. Voltage which VDOUT inverts H to L With external components, IOUT=1A, VOUT=3.0V Voltage which EXT1 pin starts oscillation Voltage which EXT1 pin voltage holding "L" level Voltage which EXT2 pin starts oscillation Voltage which EXT2 pin voltage holding "L" level FB=0.9V, EXT1=3.6V FB=1.1V, EXT1=0.4V FB=1.1V, EXT1=3.6V FB=0.9V, EXT2=0.4V With external components, EXT1:H L, EXT2:L H With external components, EXT2:H L, EXT1:L H CE=5.0V CE=0V MODE=5.0V MODE=0V CSS=0V FB=5.0V FB=0V 0.15 1.4 1.4 -0.1 -0.1 -4.0 -0.1 0.40 93 18 11 18 4 100 60 -2.0 0.72 0.4 0.4 23 18 23 8 0.1 0.1 0.1 V % V V V V ns ns A A A A A A A 25 10 11 11 12 12 13 14 15 16 10 10 17 17 18 18 19 20 20 4 8 21 ms 9 CONDITIONS MIN. 4.0 1.5 0.980 1.0 255 91 2.5 145 2.3 TYP. 1.000 1.5 550 450 300 95 98 3.0 170 4.7 MAX. 25.0 15.0 1.020 2.0 800 600 4.0 345 3.9 200 9.4 UNITS V V V V A A A kHz % % S mV ms Ta=25 C CIRCUIT 1 2 3 3 4 5 5 5 6 7 8
O
Data Sheet ud200528
5
XC9213 Series
ELECTRICAL CHARACTERISTICS (Continued)
XC9213B103 (Continued) Voltage Regulator (*3)
PARAMETER Output Voltage Load Regulation Input Regulation SYMBOL VLOUT VLOUT VLOUT VINVLOUT CONDITIONS FB=1.1V, ILOUT=10mA FB=1.1V, 1mAILOUT30mA FB=1.1V, ILOUT=10mA, VLOUT+1VVIN25V MIN. 3.86 TYP. 4.00 45 0.05 MAX. 4.14 90 0.1 UNITS V mV %/V CIRCUIT 21 21 21
Voltage Detector
PARAMETER Detect Voltage Release Voltage (*4) Hysteresis Range Output Current Delay Time VDIN Current SYMBOL VDF VDR HYS VDIOUT TDLY IVDIN CONDITIONS FB=1.1V, Voltage which VDOUT inverters H to L FB=1.1V, Voltage which VDOUT inverters L to H FB=1.1V FB=1.1V, VDIN=VDF-0.4V, VDOUT=0.5V VDRVDOUT inversion VDIN=5.0V MIN. 0.855 0.915 2.9 5 TYP. 0.900 0.954 6.0 15 MAX. 0.925 0.980 7.5 20 10 0.1 UNITS V V % mA s A CIRCUIT 22 22 22 23 22 24
NOTE: *1: Unless otherwise stated, VIN=5.0V, CE=5.0V, MODE=5.0V, FB=0.9V *2: The operation may not be stable at no load, if the step-down ratio (VOUT/VIN x 100) becomes lower than 12%. *3: The regulator block is used only for bootstrap. Please do not use as a local power supply. *4: Release voltage: (VDR) = VDF + HYS x VDF
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Data Sheet ud200528
XC9213 Series
TEST CIRCUITS
Circuit 1 Circuit 2
OCS
OCS
Circuit 3
Circuit 4
Circuit 5
Circuit 6
SBD1
OSC OSC
CIN BST EXT1 LX EXT2 PGND CFB VDOUT FB VDIN RFB2 Tr2 RFB1
VIN VSE NSE VL CE + 10u F 1uF AGND MODE + + 100p F CPRO CSS
BST EXT1 LX EXT2 PGND VDOUT FB VDIN
100pF
VIN
OCS OCS
100 k 100 k
1uF Tr1 L
VSENSE VL CE + 1uF + AGND MODE + CPRO CSS
OCS OCS
CL
+ -
Circuit 7
Tr1:
+ VIN VSENSE VL CE + 10uF 1uF AGND MODE + + 100pF 100pF CPRO CSS BST EXT1 LX EXT2 PGND VDOUT FB VDIN + -
2SK2857 (NEC) 2SK2857 (NEC) CRS02 (TOSHIBA) 22H 100F 22F 220k 110k 68pF CDRH6D28 (SUMIDA) (OS-CON, NIPPON CHEMI-CON) (OS-CON, SANYO)
Tr2:
OSC OSC
100k 100k
SBD1: L: CL: CIN1: RFB1: RFB2: CFB:
Data Sheet ud200528
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XC9213 Series
TEST CIRCUITS (Continued)
Circuit 8 Circuit 9
VIN RSENSE: 33 m
+ VIN VSE NSE VL CE + 10uF 1uF AG ND MO DE + + CPR CSS BST EXT1 LX EXT2 PG ND VDO UT FB VDIN + -
XB01SB04A2BR(TOREX)
OSC OSC
100k 100k
VIN VSENSE VL ceramic 1uF CE AGND MODE CPRO CSS ceramic 4700pF
BST EXT1 LX EXT2 PGND VDOUT FB VDIN
ceramic 10uF+10uF ceramic 1uF IRF7313 (IR) 7.4uH(SUMIDA) VOUT CMS02 (TOSHIBA) VIN 100k VL 100k 100k ceramic 47pF 200k
4700pF
100pF
GND
Circuit 10
Circuit 11
VIN RSENSE: 33 m XB01SB04A2BR(TOREX) VIN VSE NSE VL ceramic 1uF CE AGND MODE CPRO ceramic 4700pF CSS ceramic 4700pF BST EXT1 LX EXT2 PGND VDOUT FB VDIN VL 100k 100k CMS02 (TOSHIBA) VIN 100k ceramic 10uF+10uF ceramic 1uF IRF7313 (IR) 7.4uH(SUMIDA)
+ (NIPP ON CH EMI-CON)
VIN VSENSE VL CE 10uF 1uF AGND MODE + CPRO CSS 100pF
BST EXT1 LX EXT2 PGND VDOUT FB VDIN + -
25PS100JM12 100uF (NIPPON CHEMI-CON)
OSC OSC
100k 100k
ceramic 47pF 200k
25 PS 100 JM12 100u F
GND
Circuit 12
Circuit 13
VIN VSENSE VL CE + 10uF 1uF AGND MODE + CPRO CSS 100pF
BST EXT1 LX EXT2 PGND VDOUT FB VDIN + 100k 100k
VIN VSENSE VL CE + 10uF 1uF AGND MODE + CPRO CSS 100pF
BST EXT1 LX EXT2 PGND VDOUT FB VDIN + -
OSC OSC
OSC OSC
50k + 10uF
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Data Sheet ud200528
XC9213 Series
TEST CIRCUITS (Continued)
Circuit 14 Circuit 15
VIN VSENSE VL CE + 10uF 1uF AGND MODE + CPRO CSS 100pF
BST EXT1 LX EXT2 PGND VDOUT FB VDIN + V
VIN VSENSE VL CE + 10uF 1uF AGND MODE + CPRO CSS 100pF
BST EXT1 LX EXT2 PGND VDOUT FB VDIN + + 10uF 50
OSC OSC
Circuit 16
Circuit 17
VIN VSENSE VL CE + 10uF 1uF AGND MODE + CPRO CSS
BST EXT1 LX EXT2 PGND VDOUT FB VDIN + V
VIN VSENSE VL CE + 10uF 1uF A AGND MODE + CPRO CSS
BST EXT1 LX EXT2 PGND VDOUT FB VDIN 100k 100k
100pF
100pF
Circuit 18
Circuit 19
VIN VSENSE VL CE + 10uF 1uF AGND MODE A + CPRO CSS
VIN
BST EXT1 LX EXT2 PGND VDOUT FB VDIN 100k 100k
BST EXT1 LX EXT2 PGND VDOUT FB VDIN 100k 100k
VSENSE VL CE + 10uF 1uF AGND MODE + + CPRO CSS A
100pF
Data Sheet ud200528
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XC9213 Series
TEST CIRCUITS (Continued)
Circuit 20 Circuit 21
VIN VSE NSE VL CE + 10uF 1uF AGND MODE CPRO CSS 100p F
BST EXT1 LX EXT2 PGND VDOUT FB VDIN A + 100k 100k
VIN VSE NSE VL IL CE 1uF V AGND MODE + + CPRO CSS
BST EXT1 LX EXT2 PGND VDOUT FB VDIN + 100 k 100 k
+ -
10u F
100p F
Circuit 22
Circuit 23
VIN VSENSE VL CE + 10uF 1uF AGND MODE + CPRO CSS
BST EXT1 LX EXT2 PGND VDOUT FB VDIN + -
VIN
100k
BST EXT1 LX EXT2 PGND VDOUT FB VDIN + + + A
VSE NSE VL CE + V
10u F 1uF
AGND MODE + CPRO CSS
100p F
+ -
100p F
Circuit 24
Circuit 25
VIN VSE NSE VL CE FF + 10u 1u AGND MODE CPRO CSS 100p F
BST EXT1 LX EXT2 PGND VDOUT FB VDIN
100 k
+ -
VIN VSENSE VL CE
BST EXT1 LX EXT2 PGND VDOUT FB VDIN + -
OSC OSC
100k 100k
+ -
10uF 1uF
AGND MODE + + CPRO CSS 100pF
A + -
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Data Sheet ud200528
XC9213 Series
BLOCK DIAGRAM
OPERATIONAL EXPLANATION
< Error Amplifier > The error amplifier is designed to monitor output voltage. The amplifier compares the reference voltage with the feedback voltage. When a voltage lower than the reference voltage is fed back, the output voltage of the error amplifier increases. The Ramp Wave Generator is organized by the circuits generates a saw-tooth waveform based on the oscillator circuit which sets an oscillation frequency and a signal from the oscillator circuit. < PWM Comparator > The PWM Comparator compares outputs from the error amp. and saw-tooth waveform. When the voltage from the error amp's output voltage is low, the external switch will be set to OFF. < U.V.L.O. Comparator > When the VIN pin voltage is lower than 1.5V (TYP.), the circuit sets EXT/2 to "L" and the external transistor is forced OFF. < Voltage Regulator > The voltage regulator block generates 4.0V voltage for the bootstrap circuit. The regulator block is also the power supply for the internal circuit. Please do not use the regulator block as a local power supply. The reference voltage, Vref (FB pin voltage)=1.0V, is adjusted and fixed by laser trimming. The soft-start circuit protects against inrush current, when the power is switched on, and also to protect against voltage overshoot. It should be noted, however, that this circuit does not protect the load capacitor (CL) from inrush current. With the Vref voltage limited and depending upon the input to the error amps, the operation maintains a balance between the two inputs of the error amps and controls the EXT1 pin's ON time so that it doesn't increase more than is necessary. This function controls the operation and shutdown of the IC. When the voltage of the CE pin is 0.4V or less, the mode will be chip disable, the channel's operations will stop. The EXT1/2 pins will be kept at a low level (the external N-ch MOSFET will be OFF). When the CE pin is in a state of chip disable, current consumption will be no more than 4.0A. When the CE pin's voltage is 1.4V or more, the mode will be chip enable and operations will recommence. With soft-start, 95% of the set output voltage will be reached within 8mS (CSS: 4700pF (TYP.)) from the moment of chip enable. < Voltage Detector > The voltage detector of the XC9213 series is FB type. The reference voltage is 0.9V (TYP.) and the detect voltage can be set by external resistors. The output is N-ch Open Drain type. The detector is switched on / off with DC/DC by the CE pin.
Data Sheet ud200528
11
XC9213 Series
OPERATIONAL EXPLANATION (Continued)
< Protection Circuit Operation (Current Limit, Latch Protection Circuit, and Short Protection Circuit) >
Shown above is a timing chart for protection circuit operations. When the output current changes from normal to an overcurrent condition, the current-limiting circuit detects the overcurrent condition as a voltage drop occurring, by virtue of the current-sensing resistor, at the VSENSE pin. Upon detection, the current-limiting circuit limits the peak current passed through the high-side N-ch MOSFET at every clock pulse (state ). It is possible to regulate the value of limited current by varying the resistance value of the current-sensing resistor. A protection circuit (protective latch circuit), which is designed to stop the clock, functions if the overcurrent condition continues for a predetermined time (state ). Time delay before the protective latch circuit functions is adjustable by the capacitance connected to the CPRO pin (typically 4.7 ms if CPRO has 4,700 pF). The protective latch circuit is reset by turning off and on, or by a disable action followed by an enable action using the CE pin. If, furthermore, the output is short-circuited (state ) and VOUT decreases to a value close to 0 V, the short-circuit protection circuit detects the condition by means of the FB pin and stops the clock with no time delay. The short-circuit protection circuit is reset by turning off and on or by a disable action followed by an enable action using the CE pin, as with the protective latch circuit.
< Mode Control Logic >
A timing chart for automatic switching of current-limiting PFM/PWM is shown above. High-level of the MODE pin allows PWM operations to occur for synchronous rectification (state ). When the MODE pin shifts to low-level, current-limiting PFM/PWM automatic switching occurs with synchronous rectification stopped. Consequently, the low-side N-ch MOSFET is constantly off under this condition. In addition, a comparison is made for the purposes of automatic switching, between the ON time of the high-side N-ch MOSFET determined by the internal error amp. and the time required for the current passed at every clock pulse through the high-side N-ch MOSFET to reach a preset amount of current. The longer one is selected and becomes on duty (state or ). If the time determined by the error amp. is longer than the other, PWM operation occurs. Current-limiting PFM operation occurs if the time taken by the current passing at every clock pulse to reach a preset amount of current is longer. Thus the automatic switching mechanism achieves high efficiency under light to heavy load conditions.
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Data Sheet ud200528
XC9213 Series
TYPICAL APPLICATION CIRCUIT
*Please place CIN close to RSENSE as much as possible, so that an impedance does not occur between the elements. *Please place CIN, RSENSE, Tr1, Tr2, L, CL, and SD1 as close as possible to each other.
EXTERNAL COMPONENTS
* Please refer to the DC/DC simulation section of the Torex web site (http//:www.torex.co.jp) for more details.
Recommended N-ch MOSFETs for Tr1 and Tr2 IOUT : Less than 3A
PART NUMBER uPA2751GR IRF7313 MANUFACTURER NEC International Rectifier TYPE Dual Dual Ciss (pF) 1040 650 Crss (pF) 130 130 Crss / (Ciss + Crss) 0.111 0.167
IOUT : More than 3A
PART NUMBER SUD30N03 SUD70N03 MANUFACTURER Vishay Vishay TYPE Single Single Ciss (pF) 1170 2700 Crss (pF) 30 360 Crss / (Ciss + Crss) 0.049 0.118
* It is recommended to use MOSFETs with Ciss less than 3000pF. * For Tr2, MOSFETs with smaller Crss / (Ciss + Crss) are recommended.
Recommended Coil (L)
PART NUMBER CDRH127/LD-7R4 CDRH127-6R1 MANUFACTURER SUMIDA SUMIDA
* For stable operation, please use a coil with L less than 22H.
Recommended Capacitor (CIN, CVL, CBST, CL)
COMPONENTS CIN (*1) CVL CBST CL (*2) PART NUMBER 25SC22M 20SS150M 25PS100JM12 MANUFACTURER SANYO SANYO NIPPON CHEMI-CON TYPE Ceramic OS Ceramic Ceramic OS VALUE 10F 22F 1F 1F ~ 4.7F 150F 100F PCS 2 1 1 1 1
(*1)Please place CIN close to RSENSE as much as possible, so that an impedance does not occur between the elements. A 1F ceramic capacitor is recommended for CVL. (*2)Operation may become unstable if a ceramic capacitor is used for CL.
Data Sheet ud200528
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XC9213 Series
EXTERNAL COMPONENTS (Continued)
Output Voltage Setting (RFB1, RFB2, CFB)
Output voltage can be set by adding external split resistors. Output voltage is determined by the following equation, based on the values of RFB1 and RFB2. The sum of RFB1 and RFB2 should normally be 2 M or less (RFB1 + RFB22M). VOUT = RFB1 / RFB2 + 1 The value of CFB, speed-up capacitor for phase compensation, should be adjusted by the following equation. fzfb= 1 / (2 x x CFB x RFB1)10kHz Adjustments are required from 1kHz to 50kHz depending on the application, value of inductance (L), and value of load capacity (CL). ex.) Output voltage setting VOUT (V) RFB1 () 1.5 1.8 2.5 3.0 3.3 5.0 150 160 360 220 620 300
RFB2 () 300 200 240 110 270 75
CFB (pF) 100 100 47 47 27 47
Recommended Schottky Diode (SD1, SD2)
SYMBOL SD1 SD2 PART NUMBER CMS02 DE5PC3 XB01SB04A2BR CRS02 MANUFACTURER TOSHIBA SHINDENGEN TOREX TOSHIBA
If, in particular, SD2 has poor reverse-current characteristics,
* SD1 and SD2 should be of favorable reverse-current characteristics.
CBST cannot be fully charged at high temperatures, resulting, in some cases, in failure to drive Tr1.
Setting Latch Protection Circuit Delay Time (CPRO)
Time delay is 4.7 ms (TYP.) under the current conditions if CPRO has 4,700 pF. This time delay is roughly proportional to the value of CPRO. ex.) When CPRO is 2200pF, When CPRO is 0.01F (10,000pF), 4.7ms (TYP.) x 2200pF / 4700pF 4.7ms (TYP.) x 10000pF / 4700pF =2.2ms (TYP.) =10ms (TYP.)
* For stable operation, please use a capacitor with more than 2200pF as CPRO.
Setting Soft-Start Time (CSS)
Relationships between the value of CSS and the soft-start time (25OC TYP.) are shown at left. For stable operation, please use a capacitor with more than 2200pF as CSS.
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Data Sheet ud200528
XC9213 Series
EXTERNAL COMPONENTS (Continued)
Sense Resistance (RSENSE)
The below values can be adjusted by using sense resistance (RSENSE). It is recommended using the RSENSE value in the range of 20m to 100m. 1) Detect current value of the overcurrent detect circuit Maximum output current (IOUTMAX) can be adjusted as the equation below. IOUTMAX (A) 200mV (MAX.) / RSENSE (m) When 4VVIN5V, the maximum output current becomes larger than the calculated value. Please also refer to the characteristics performance below.
2) Peak current value of the current limit PFM control
Peak current value of the current limit PFM control (I_PFM) varies depending on the dropout voltage (VDIF), the coil (L) value and the sense resistance value (RSENSE). For the XC9213 series' sample with voltage sense (VSENSE) 170mV, the characteristic performance below shows the changes in the peak current (I_PFM) when the sense resistance values (RSENSE) are 20m, 33 m, and 50 m. The peak current varies according to the dropout voltage and the coil value.
PFM Peak Current 3.0
I_PFM(TYP. 25) (A)
PFM Peak Current RSENSE:20m
I_PFM(TYP. 25) (A)
3.0 2.5 2.0 1.5 1.0 0.5 0.0
RSENSE:33m
2.5 2.0 1.5 1.0 0.5 0.0 0 1 2 3 Vdif/L (V/ H) 4 5
0
1
2
3
4
5
Vdif/L (V/ H)
PFM Peak Current 3.0
I_PFM(TYP. 25) (A)
RSENSE:50m
The sense voltage varies within the range of 145 mVVSENSE200mV. The peak current as shown in three graphs fluctuates according to the sample's sense voltage.
2.5 2.0 1.5 1.0 0.5 0.0 0 1 2 3 4 5 Vdif/L (V/ H)
Data Sheet ud200528
15
XC9213 Series
EXTERNAL COMPONENTS (Continued)
Divided Resistors For VD Input Voltages (RVDIN1, RVDIN2)
Detect voltage of the detector block can be adjusted by the external divided resistors for VD input voltages (RVDIN1, RVDIN2) as the equation below. When 0.855V < VDF < 0.925V (0.9V TYP.) Detect voltage = VDF x (RVDIN1 + RVDIN2) / RVDIN2 [V] Please select RVDIN1 and RVDIN2 as the sum of RVDIN1 and RVDIN2 becomes less than 2M.
Divided Resistor For VD Output Voltage (RVDOUT)
Output type of the detector block is N-channel open drain. Please use a 1k resistor or more as RVDOUT.
APPLICATION CIRCUIT EXAMPLE
The application circuit shown below is the example for using the detector block as power good. Please connect the VDIN pin with the FB pin as below.
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Data Sheet ud200528
XC9213 Series
NOTES ON USE
1. Overcurrent Limit Function
The internal current detection circuit is designed to monitor voltage occurs between RSENSE resistors in the overcurrent condition. In case that the overcurrent limit function operates when the output is shorted, etc., the current detection circuit detects that the voltage between RSENSE resistors reaches the SENSE voltage (170mV TYP.), and, thereby, the overcurrent limit circuit outputs the signal, which makes High side's N-ch MOSFET turn off. Therefore, delay time will occur (300ns TYP.) after the current detection circuit detects the SENSE voltage before High side's N-ch MOSFET turns off. When the overcurrent limit function operates because of rapid load fluctuation etc., the SENSE voltage will spread during the delay time without being limited at the voltage value, which is supposed to be limited. Therefore, please be noted to the absolute maximum ratings of external MOSFET, a coil, and an Schottky diode.
2. Short Protection Circuit
In case that a power supply is applied to the IC while the output is shorted, or the IC is switched to enable state from disable state via the CE pin, when High side's N-ch MOSFET is ON and Low side's N-ch MOSFET is OFF, the potential difference for input voltage will occur to the both ends of a coil. Therefore, the time rate of coil current becomes large. By contrast, when High side's N-ch MOSFET is OFF and Low side's N-ch MOSFET is ON, there is almost no potential difference at both ends of the coil since the output voltage is shorted to the Ground. For this, the time rate of coil current becomes quite small. This operation is repeated within soft-start time; therefore, coil current will increase for every clock. Also with the delay time of the circuit, coil current will be converged on a certain current value without being limited at the current amount, which is supposed to be limited. However, step-down operation will stop and the circuit can be latched if FB voltage is decreasing to the voltage level, which enables to operate a short protection circuit when the soft-start time completes. Even if the FB voltage is not decreasing to the voltage level, which a short protection circuit cannot be operated, the step-down operation stops when CPRO time completes, and the circuit will be latched. Please be noted to the absolute maximum ratings of external MOSFET, a coil, and an Schottky diode.
3. Current Limit PFM Control
With a built-in bootstrap buffer driver circuit, the 9213 series generates voltage for Tr1 to be turned on by charging CBST with VL (4V). When Tr1 is off, Tr2 is on, and the Lx signal is low, it will be suitable timing for charging CBST. (Please refer to the above figure.) For that reason, at PFM control (MODE: Low), the clock pulses will decrease extremely according to the decrease of the load current. As a result, it will cause a decrease of charging frequency and an electric discharge of CBST so that sufficient voltage for the Tr1 to be turned on will not be supplied. Therefore, 1) Please use a Schottky Barrier Diode with few reverse current values for SD2. 2) Please avoid extreme light loads (e.g. less than a few mA) Moreover, the above-mentioned operation may occur, influenced by external components including SD2 and ambient temperature. It's recommended to use the IC after evaluation with an actual device.
VL(4V)
SD2 BST VIN Tr1 EXT1 CBST
XC9213
LX
L
GND
CL
CBST Charge
CBST Charge
Tr2 EXT2 SD1
LX Waveform (MODE:Low, PFM)
PGND
Data Sheet ud200528
17
XC9213 Series
NOTES ON USE (Continued)
4. Switching on and off the IC by the input voltage pin When the IC is switched on and off by the input voltage pin (VIN) instead of the chip enable pin (CE), the IC may stop operation because a protection circuit built inside the short-protection circuit, etc. begins to work in order to block ON signal which is sent before the soft-start capacitor connection pin (CSS) resets. The following methods can be used for avoiding this situation; a) Turn on the power source again after input voltage becomes below U.V.L.O. detect voltage (1.0V MIN.), furthermore, after the lapse of the time constant of =CSS x 50k. b) Before turning the power source on again, start-up the IC after resetting the CSS forcibly and keeping soft-start time. Please make sure the CSS pin is discharged once and the soft-start time is secured when starting up the IC.
18
Data Sheet ud200528
XC9213 Series
RECOMMENDED PCB LAYOUT
Layout For Using a Dual MOSFET
TOREX
VDOUT SD2
VIN CIN
+
RSENSE
CE RVD3
CBST
RSENSE
SD
0306
TR
CVL
MODE
CDD
RVD2
CPRO CSS
GND
VER.2.0B
IC
CL
CL
SD1
Resistance
SD
Tr
Ceramic Capacitor
Test pin
VDIN
+
RFB1 CFB
VL
VOUT RFB2 FB
L
L
Layout For Using a Single MOSFET
RSENSE
0308
VER.2.1A
G
G
SD
TR1
RSENSE
XC9213
VIN
CIN Tr
CIN
TOREX
+
XC9213
RVD1
VDOUT
SD2
Resistance
RVD3 CBST
TR2
Ceramic Capacitor
MODE
CPRO GND SD1 CSS
SD
CDD
CVL
CE
IC
Test pin
L
VL RVD1 RVD2 CL + RFB2 VDIN RFB1 FB CFB CL
CL
+ VOUT
L

Tr
* Please use tinned wires etc. for the VIN, the VOUT, and the GND. ** Please attach test pins etc. to the CE, the MODE, the EXT, and the EXT2. *** Please solder mount the RSENSE and the CE as close as possible.
Data Sheet ud200528
19
XC9213 Series
TYPICAL PERFORMANCE CHARACTERISTICS
(Unless otherwise stated, Topr:25) (1) Output Voltage vs. Output Current
VOUT vs. IOUT 2.0 VOUT vs. IOUT FET:IRF7313 2.0 FET:SUD30N03
Output Voltage VOUT (mA)
Output Voltage VOUT (mA)
1.9
1.9
1.8 VIN:5V, 8V, 15V, 20V
1.8 VIN:5V, 8V, 15V, 20V
1.7
1.7
1.6
1.6
1.5 10 100 1000 Output Current IOUT (mA) 10000
1.5 10 100 1000 Output Current IOUT (mA) 10000
VOUT vs. IOUT 3.5
FET:IRF7313 3.5
VOUT vs. IOUT FET:SUD30N03
Output Voltage VOUT (mA)
3.3 VIN:5V, 8V, 15V, 20V
Output Voltage VOUT (mA)
3.4
3.4
3.3 VIN:5V, 8V, 15V, 20V
3.2
3.2
3.1
3.1
3.0 10 100 1000 Output Current IOUT (mA) 10000
3.0 10 100 1000 Output Current IOUT (mA) 10000
VOUT vs. IOUT 5.2
FET:IRF7313
VOUT vs. IOUT 5.2
FET:SUD30N03
Output Voltage VOUT (mA)
Output Voltage VOUT (mA)
5.1
5.1
5.0
5.0 VIN:8V, 15V, 20V
4.9
VIN:8V, 15V, 20V
4.9
4.8
4.8
4.7 10 100 1000 Output Current IOUT (mA) 10000
4.7 10 100 1000 Output Current IOUT (mA) 10000
20
Data Sheet ud200528
XC9213 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(2) Output Voltage vs. Output Current
VOUT vs. IOUT 2.0 FET:IRF7313 2.0 VOUT vs. IOUT FET:SUD30N03
Output Voltage VOUT (mA)
1.8 VIN:5V, 8V, 15V, 20V
Output Voltage VOUT (mA)
1.9
1.9
1.8 VIN:5V, 8V, 15V, 20V
1.7
1.7
1.6
1.6
1.5 10 100 1000 Output Current IOUT (mA) 10000
1.5 10 100 1000 Output Current IOUT (mA) 10000
VOUT vs. IOUT 3.5
FET:IRF7313
VOUT vs. IOUT 3.5
FET:SUD30N03
Output Voltage VOUT (mA)
Output Voltage VOUT (mA)
3.4
3.4
3.3 VIN:5V, 8V, 15V, 20V
3.3 VIN:5V, 8V, 15V, 20V
3.2
3.2
3.1
3.1
3.0 10 100 1000 Output Current IOUT (mA) 10000
3.0 10 100 1000 Output Current IOUT (mA) 10000
VOUT vs. IOUT 5.2
FET:IRF7313 5.2
VOUT vs. IOUT
FET:SUD30N03
Output Voltage VOUT (mA)
Output Voltage VOUT (mA)
5.1
5.1
5.0 VIN:8V, 15V, 20V
5.0 VIN:8V, 15V, 20V
4.9
4.9
4.8
4.8
4.7 10 100 1000 Output Current IOUT (mA) 10000
4.7 10 100 1000 Output Current IOUT (mA) 10000
Data Sheet ud200528
21
XC9213 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(3) Efficiency vs. Output Current
100 EFFI. vs. IOUT VOUT:1.8V, FET:IRF7313 100 EFFI. vs. IOUT VOUT:1.8V, FET:SUD30N03
80 Efficiency EFFI. (%) Efficiency EFFI. (%)
80
60
60
40 VIN:5V, 8V, 15V, 20V 20
40 VIN:5V, 8V, 15V, 20V 20
0 10 100 1000 Output Current IOUT (mA) 10000
0 10 100 1000 Output Current IOUT (mA) 10000
100
EFFI vs. IOUT VOUT:3.3V, FET:IRF7313
100
EFFI. vs. IOUT VOUT:3.3V, FET:SUD30N03
80 Efficiency EFFI. (%) Efficiency EFFI. (%)
80
60
60
40 VIN:5V, 8V, 15V, 20V 20
40 VIN:5V, 8V, 15V, 20V 20
0 10 100 1000 Output Current IOUT (mA) 10000
0 10 100 1000 Output Current IOUT (mA) 10000
100
EFFI. vs. IOUT VOUT:5.0V, FET:IRF7313
100
EFFI. vs. IOUT VOUT:5.0V, FET:SUD30N03
80 Efficiency EFFI. (%) Efficiency EFFI. (%)
80
60
60
40 VIN:8V, 15V, 20V 20
40 VIN:8V, 15V, 20V 20
0 10 100 1000 Output Current IOUT (mA) 10000
0 10 100 1000 Output Current IOUT (mA) 10000
22
Data Sheet ud200528
XC9213 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(4) Efficiency vs. Output Current
EFFI. vs. IOUT 100 VOUT:1.8V, FET:IRF7313 100 EFFI. vs. IOUT VOUT:1.8V, FET:SUD30N03
80
Efficiency EFFI. (%) Efficiency EFFI. (%)
80
60
60 VIN:5V, 8V, 15V, 20V
40
VIN:5V, 8V, 15V, 20V
40
20
20
0 10 100 1000 Output Current IOUT (mA) 10000
0 10 100 1000 Output Current IOUT (mA) 10000
100
EFFI. vs. IOUT VOUT:3.3V, FET:IRF7313
EFFI. vs. IOUT 100 VOUT:3.3V, FET:SUD30N03
80
Efficiency EFFI. (%) Efficiency EFFI. (%)
80
60
60
40 VIN:5V, 8V, 15V, 20V 20
40 VIN:5V, 8V, 15V, 20V 20
0 10 100 1000 Output Current IOUT (mA) 10000
0 10 100 1000 Output Current IOUT (mA) 10000
EFFI. vs. IOUT 100 VOUT:5.0V, FET:IRF7313 100
EFFI. vs. IOUT VOUT:5.0V, FET:SUD30N03
80
Efficiency EFFI. (%) Efficiency EFFI. (%)
80
60
60
40 VIN:8V, 15V, 20V 20
40 VIN:8V, 15V, 20V 20
0 10 100 1000 Output Current IOUT (mA) 10000
0 10 100 1000 Output Current IOUT (mA) 10000
Data Sheet ud200528
23
XC9213 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(5) Ripple Voltage vs. Output Current
Vripple vs. IOUT 80 FET:IRF7313, VIN=5V, VOUT=3.3V 80 Vripple vs. IOUT FET:SUD30N03, VIN=5V, VOUT=3.3V
Ripple Voltage Vripple (mV)
Ripple Voltage Vripple (mV)
60 CL:150 F (OS-CON SANYO) 40 CL:300 F (OS-CON SANYO) 20
60 CL:150 F (OS-CON SANYO) 40 CL:300 F (OS-CON SANYO) 20
0 10 100 1000 Output Current IOUT (mA) 10000
0 10 100 1000 Output Current IOUT (mA) 10000
Vripple vs. IOUT 80 FET:IRF7313, VIN=15V, VOUT=5.0V 80
Vripple vs. IOUT FET:SUD30N03, VIN=15V, VOUT=5.0V
Ripple Voltage Vripple (mV)
Ripple Voltage Vripple (mV)
60
CL:150 F (OS-CON SANYO)
60
CL:150 F (OS-CON SANYO)
40
40
20 CL:300 F (OS-CON SANYO) 0 10 100 1000 Output Current IOUT (mA) 10000
20 CL:300 F (OS-CON SANYO) 0 10 100 1000 Output Current IOUT (mA) 10000
(6) FB Voltage Temperature Characteristics
VFB vs. Topr 1.04
VFB Temperature coefficient (ppm/,25-based)
VFB Temperature coefficient vs. Topr (25 -based) 100
1.02
FB Voltage(V) (V) VFB VFB
50
1.00
0
0.98
0.96
-50
0.94 -50 0
-100 -50 0
Temperature Topr()
Topr ( )
50
100
Temperature Topr()
Topr ( )
50
100
24
Data Sheet ud200528
XC9213 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(7) Oscillation Frequency Temperature Characteristics
FOSC vs. Topr 400 FOSC Temperature coefficient (ppm/,25-based) 3000 2000 1000 0 -1000 -2000 -3000 -50 0 50 100 Topr ( Topr() Temperature ) FOSC Temperature Coefficient vs. Topr (25 -based)
350 FOSC(kHz)
300
250
200 -50
Topr ( ) Temperature Topr()
0
50
100
(8) Supply Current 1 & 2 Temperature Characteristics
IDD1 vs. Topr 800 700 Supply Current 2 IDD2 (A) 600 500 400 300 200 -50 800 700 600 500 400 300 200 -50 IDD2 vs. Topr
Supply Current 1 IDD1 ( A)
0
50
100
0
50
100
Topr ( Topr() Temperature )
Temperature Topr() Topr ( )
(9) Standby Current Temperature Characteristics
ISTB vs. Topr 10
Standby Current ISTB ( A)
8
6
4
2
0 -50 0 50 100 Topr ) Temperature(Topr()
Data Sheet ud200528
25
XC9213 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(10) VR Output Voltage Temperature Characteristics
VLOUT Temperature coefficient (ppm/,25-based) VLOUT vs. Topr 4.2 VLOUT Temperature coefficient vs. Topr (25 -based) 100
VD Output Volage VLOUT (V)
4.1
50
4.0
0
3.9
-50
3.8 -50 0 50 100
-100 -50 0 50 100
Temperature( ) Topr Topr()
Temperature ) Topr ( Topr()
(11) VD Detect Voltage Temperature Characteristics
VDF vs. Topr 1.00
(12) VD Release Voltage Temperature Characteristics
VDR vs. Topr 1.00
Detect Voltage VDF (V)
0.90
Release Voltage VDR (V) -50 0 Topr ( ) 50 100
0.95
0.95
0.90
0.85
0.85
0.80
0.80 -50 0 50 100 Topr ( ) Temperature Topr()
Temperature Topr()
(13) CE "H", "L" Voltage Temperature Characteristics
VCEH vs. Topr 1.4 1.2 CE "H" Voltage VCEH (V) 1.0 0.8 0.6 0.4 0.2 -50 0 50 100 CE "L" Voltage VCEL (V) 1.4 1.2 1.0 0.8 0.6 0.4 0.2 -50 0 50 100 VCEL vs. Topr
Temperature Topr() Topr ( )
Temperature ) Topr ( Topr()
26
Data Sheet ud200528
XC9213 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(14) MODE "H", "L" Voltage Temperature Characteristics
VMODEH vs. Topr 1.4 VMODEL vs. Topr 1.4 1.2 1.0 0.8 0.6 0.4 0.2 -50 0 50 100 -50 0 50 100
MODE "H" Voltage VMODEH(V)
1.0 0.8 0.6 0.4 0.2
Temperature Topr() Topr ( )
(V) MODE "L" Voltage VMODEL
1.2
Temperature Topr() Topr ( )
(15) Sense Voltage Temperature Characteristics
VSENSE vs. Topr 0.20 VIN:5V, VOUT:1.8V, RSENSE:33m , L:6.1 H
(16) Short Protection Circuit Operation Voltage Temp. Characteristics
VSHORT vs. Topr
Short Protection Circuit Operating Voltage VSHORT (V)
0.7 0.6 0.5 0.4 0.3 0.2 0.1 -50 0 50 100 Topr ( ) Temperature Topr()
Sense Voltage VSENSE (V)
0.18
0.16
0.14
0.12
0.10 -50 0 50 100
Temperature Topr() Topr ( )
(17) U.V.L.O. Voltage Temperature Characteristics
UVLO vs. Topr 2.5
U.V.L.O. Voltage UVLO (V)
2.0
1.5
1.0
0.5 -50 0 Topr ( Topr() Temperature ) 50 100
Data Sheet ud200528
27
XC9213 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(18) Load Transient Response Characteristics
VIN: 5V VOUT: 1.8V IOUT:0A 1A MODE: High FET:IRF7313 (International Rectifier) RSENSE:33m CL:150F (OS-CON, SANYO) L: CDRH127/LD-7R4 (SUMIDA)
VIN: 15V VOUT: 1.8V IOUT:0A 1A
MODE: High FET:IRF7313 (International Rectifier) RSENSE:33m
CL:150F (OS-CON, SANYO) L: CDRH127/LD-7R4 (SUMIDA)
VIN: 5V VOUT: 3.3V IOUT:0A 1A
MODE: High FET:IRF7313 (International Rectifier) RSENSE:33m
CL:150F (OS-CON, SANYO) L: CDRH127/LD-7R4 (SUMIDA)
28
Data Sheet ud200528
XC9213 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(18) Load Transient Response Characteristics (Continued)
VIN: 15V VOUT: 3.3V IOUT:0A 1A MODE: High FET:IRF7313 (International Rectifier) RSENSE:33m CL:150F (OS-CON, SANYO) L: CDRH127/LD-7R4 (SUMIDA)
VIN: 5V VOUT: 1.8V IOUT:0A 1A
MODE: High FET: SUD30N03 (Vishay) RSENSE:33m
CL:150F (OS-CON, SANYO) L: CDRH127/LD-7R4 (SUMIDA)
VIN: 15V VOUT: 1.8V IOUT:0A 1A
MODE: High FET:SUD30N03 (Vishay) RSENSE:33m
CL:150F (OS-CON, SANYO) L: CDRH127/LD-7R4 (SUMIDA)
Data Sheet ud200528
29
XC9213 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(18) Load Transient Response Characteristics (Continued)
VIN: 5V VOUT: 3.3V IOUT:0A 1A MODE: High FET:SUD30N03 (Vishay) RSENSE:33m CL:150F (OS-CON, SANYO) L:CDRH127/LD-7R4 (SUMIDA)
VIN: 15V VOUT: 3.3V IOUT:0A 1A
MODE: High FET: SUD30N03 (Vishay) RSENSE:33m
CL:150F (OS-CON, SANYO) L: CDRH127/LD-7R4 (SUMIDA)
30
Data Sheet ud200528
XC9213 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(19) Load Transient Response Characteristics
VIN: 5V VOUT: 1.8V IOUT:0A 1A MODE: Low FET:IRF7313 (International Rectifier) RSENSE:33m CL:150F (OS-CON, SANYO) L: CDRH127/LD-7R4 (SUMIDA)
VIN: 5V VOUT: 1.8V IOUT:0A 1A
MODE: Low FET: SUD30N03 (Vishay) RSENSE:33m
CL:150F (OS-CON, SANYO) L: CDRH127/LD-7R4 (SUMIDA)
Data Sheet ud200528
31
XC9213 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(20) Latch Protection Circuit Operating Waveform
VIN: 5V VOUT: 3.3V MODE: High Topr : - 40 FET: SUD30N03 (Vishay) RSENSE:33m CPRO: ceramic 4700pF Topr : 25 CL:150F (OS-CON, SANYO) L: CDRH127/LD-7R4 (SUMIDA)
Topr : 85
32
Data Sheet ud200528
XC9213 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(21) Short-circuit Protection Circuit Operation Waveform
VIN: 5V VOUT: 3.3V MODE: High Topr : - 40 FET: SUD30N03 (Vishay) RSENSE:33m CPRO: ceramic 4700pF Topr : 25 CL:150F (OS-CON, SANYO) L: CDRH127/LD-7R4 (SUMIDA)
Topr : 85
(22) Soft-start Circuit Operation Waveform
VIN: 5V VOUT: 3.3V IOUT=100mA MODE: High Css: 4700pF VIN: 20V VOUT: 15V IOUT=100mA MODE: High Css: 4700pF
Data Sheet ud200528
33

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