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XC6415 Series
Dual LDO Regulators with ON/OFF Switch
Preliminary
ETR0332-002
GENERAL DESCRIPTION
XC6415 series are highly accurate, Dual, low noise, CMOS LDO voltage regulators. Performance features of the series include low output noise, high ripple rejection rate, and low dropout. Extremely dense power supply circuit can be organized with a 2 channeled high speed voltage regulator in low ON resistance which is built-in to an ultra small USP-6C package. The output voltage for each regulator is set independently by laser trimming and selectable in 50mV increments within a range of 0.8 to 5.0V. The EN function allows the output of each regulator to be turned off independently. In this state, with the XC6415 series, the IC turns on the internal switch located between the VOUT and the VSS pins. This short enables the electric charge at the output capacitor (CL) to be discharged via the internal auto-discharge resistance, and as a result the VOUT pin quickly returns to the VSS level. The series' output stabilization capacitor (CL) is also compatible with low ESR ceramic capacitors. The high level of output stability is maintained even during frequent load fluctuations, due to the excellent transient response performance. Because regulator 1 and 2 are completely isolated, a cross talk between each channel, which causes a problem during load fluctuations, can be greatly reduced
APPLICATIONS
Mobile phones Cordless phones, Wireless communication equipment Portable games Digital still cameras, Digital video cameras Portable audio equipment PDAs
FEATURES
Output Current Dropout Voltage : 200mA (300mA limit, TYP.) : 90mV @ IOUT=100mA VOUT(T)=3.0V Operating Voltage Range : 1.5V~6.0V Output Voltage Setting Range : 0.8V~5.0V (50mV increments) High Accuracy : + 1% @ VOUT>2.0V + 20mV @VOUT<2.0V Low Power Consumption : 28 A/ch (TYP.) Stand-by Current : Less than 0.1 A Ripple Rejection : 65dB@1kHz Operating Temperature Range: - 40OC ~ 85OC Low ESR Capacitor : 1.0 F ceramic capacitor compatible Small Packages : USP-6C, SOT-26
TYPICAL APPLICATION CIRCUITS
SOT-26 USP-6C
SOT-26 (TOP VIEW)
USP-6C (TOP VIEW)
110
XC6415 Series
PIN CONFIGURATION
*The dissipation pad for the USP-6C package should be solder-plated in recommended mount pattern and metal masking so as to enhance mounting strength and heat release. connected to the VSS (No. 4) pin. If the pad needs to be connected to other pins, if should be
PIN ASSIGNMENT
PIN NUMBER SOT-26 1 2 3 4 5 6 USP-6C 3 2 1 6 4 5 PIN NAME EN1 VIN EN2 VOUT2 VSS VOUT1 FUNCTIONS : ON/OFF Control 1 : Power Input : ON/OFF Control 2 : Output 2 : Ground : Output 1
PRODUCT CLASSIFICATION
Ordering Information
XC6415 DESIGNATOR DESCRIPTION Type of Regulator 1 Type of Regulator 2 Output Voltage Packages Device Orientation SYMBOL A B A B 01 ~ M E R L DESCRIPTON : EN High Active without CL discharge resistor : EN High Active with CL discharge resistor : EN High Active without CL discharge resistor : EN High Active with CL discharge resistor : Internally set sequential number relating output voltage of each regulators; Regulator 1 Output Voltage Setting Range: 0.8 ~ 5.0V (50mV increments) Regulator 2 Output Voltage Setting Range: 0.8 ~ 5.0V (50mV increments) : SOT-26 : USP-6C : Embossed tape, standard feed : Embossed tape, reverse feed
DESIGNATOR
01 02 03 04 05 06 07 08 09 10
VR1
1.80 1.20 1.80 1.50 2.85 1.80 3.00 2.80 1.20 1.10
VR2
2.80 2.90 1.80 2.70 2.85 3.30 3.00 1.80 1.20 1.30
11 12 13 14 15 16 17 18 19 20
VR1
1.30 2.80 2.50 3.00 1.20 2.80 3.30 3.10 2.80 1.30
VR2
1.50 2.80 3.30 3.30 1.80 3.30 3.30 3.10 1.50 2.80
21 22 23 24 25 26 27 28 29 30
VR1
1.50 1.80 1.85 1.85 2.60 -
VR2
2.80 3.00 2.80 3.30 2.80 -
*For other combinations, output voltages and etc., please ask Torex sales contacts.
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XC6415
Series
BLOCK DIAGRAMS
< XC6415AA Series >
* Diodes inside the circuits are ESD protection diodes and parasitic diodes.
< XC6415BB Series >
ABSOLUTE MAXIMUM RATINGS
Ta=25OC
PARAMETER Input Voltage Output Current Output Voltage 1 / Output Voltage 2 EN1/EN2 Input Voltage USP-6C Power Dissipation SOT-25 Operating Temperature Range Storage Temperature Range * IOUT=Pd / (VIN - VOUT)
SYMBOL VIN IOUT1 + IOUT2 VOUT1 / VOUT2 VEN1 / VEN2 Pd
RATINGS - 0.3 ~ + 6.5 500 (*1) VSS - 0.3 ~ VIN + 0.3 VSS - 0.3 ~ + 6.5 100 250 - 40 ~ + 85 - 55 ~ + 125
UNITS V mA V V mW
Topr Tstg
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XC6415 Series
ELECTRICAL CHARACTERISTICS
XC6415 Series
Regulator 1, Regulator 2 PARAMETER Output Voltage Output Current Load Regulation Dropout Voltage (*5) Supply Current Stand-by Current SYMBOL VOUT(E)
(*2)
Ta=25
CONDITIONS VOUT(T)2.0V, VEN=VIN, IOUT=10mA VOUT1.95V, VEN=VIN, IOUT=10mA VEN=VIN, 0.1mAIOUT100mA IOUT=100mA, VEN=VIN VIN=VEN=VOUT(T)+1.0V, IOUT=0mA VIN=6.0V, VEN=VSS VOUT(T)+0.5VVIN6.0V VOUT(T)1.0V, VEN=VIN, IOUT=10mA 1.5VVIN6.0V VOUT(T)0.95V VEN=VIN, IOUT=10mA VEN=VIN, IOUT=30mA -40Ta85 VIN={VOUT(T)+1.0}VDC+0.5Vp-pAC : VOUT(T)4.75V, VEN=VIN, IOUT=30mA, f=1kHz VIN=5.75VDC+0.5Vp-pAC : VOUT(T)4.8V, VEN=VIN, IOUT=30mA, f=1kHz VEN=VIN VEN=VIN, Short VOUT to VSS level
MIN. x0.99
(*3)
TYP. VOUT(T)
(*4)
MAX. x1.01
(*3)
UNITS CIRCUITS V mA mV mV A A
-0.02
(*3)
+0.02
(*3)
IOUTMAX VOUT Vdif ISS ISTBY
200 -
15 E-2 28 0.01
0.10

Line Regulation
VOUT VINVOUT
-
0.01
0.20
%/V
Input Voltage Output Voltage Temperature Characteristics
VIN VOUT TaVOUT
1.5 -
100
6.0 -
V ppm/

Ripple Rejection Rate
PSRR
-
65
-
dB
Limit Current Short Current EN "H" Level Voltage EN "L" Level Voltage EN "H" Level Current EN "L" Level Current CL Discharge Resistor (*8)
Ilim Ishort VENH VENL IENH IENL Rdischg
VEN=VIN VEN=VSS VIN=6.0V, VOUT=4.0V, VCE= VSS
200 1.2 -0.1 -0.1 -
300 30 550
6.0 0.3 0.1 0.1 -
mA mA V V A A

NOTE: *1: Unless otherwise stated, VIN=VOUT(T) +1.0V. *2: VOUT(E)= Effective output voltage (see the voltage chart) (ie. The output voltage when "VOUT(T)+1.0V" is provided at the VIN pin while maintaining a certain IOUT value. *3 : Characteristics of the actual VOUT(E) by setting output voltage is shown in the voltage chart. *4 : VOUT(T) : Specified output voltage (*7) (*6) *5: Vdif{VIN1 VOUT1 } *6: VOUT1: A voltage equal to 98% of the output voltage whenever an amply stabilized IOUT{VOUT(T)+1.0V} is input. *7: VIN1: The input voltage when VOUT1 appears as input voltage is gradually decreased. *8: For XC6415xB/Bx series only. XC6415xA/Ax series discharge with only Rx1 and Rx2 resistors as shown in the BLOCK DIAGRAMS.
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XC6415
Series
ELECTRICAL CHARACTERISTICS (Continued)
Voltage Chart
SETTING OUTPUT VOLTAGE (V) VOUT(T) 0.80 0.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20 1.25 1.30 1.35 1.40 1.45 1.50 1.55 1.60 1.65 1.70 1.75 1.80 1.85 1.90 1.95 2.00 2.05 2.10 2.15 2.20 2.25 2.30 2.35 2.40 2.45 2.50 2.55 2.60 2.65 2.70 2.75 2.80 2.85 2.90 2.95
E-1 OUTPUT VOLTAGE (V) VOUT(E) MIN. 0.7800 0.8300 0.8800 0.9300 0.9800 1.0300 1.0800 1.1300 1.1800 1.2300 1.2800 1.3300 1.3800 1.4300 1.4800 1.5300 1.5800 1.6300 1.6800 1.7300 1.7800 1.8300 1.8800 1.9300 1.9800 2.0295 2.0790 2.1285 2.1780 2.2275 2.2770 2.3265 2.3760 2.4255 2.4750 2.5245 2.5740 2.6235 2.6730 2.7225 2.7720 2.8215 2.8710 2.9205 MAX. 0.8200 0.8700 0.9200 0.9700 1.0200 1.0700 1.1200 1.1700 1.2200 1.2700 1.3200 1.3700 1.4200 1.4700 1.5200 1.5700 1.6200 1.6700 1.7200 1.7700 1.8200 1.8700 1.9200 1.9700 2.0200 2.0705 2.1210 2.1715 2.2220 2.2725 2.3230 2.3735 2.4240 2.4745 2.5250 2.5755 2.6260 2.6765 2.7270 2.7775 2.8280 2.8785 2.9290 2.9795
E-2 DROPOUT VOLTAGE (mV) Vdif TYP. 580 490 400 320 240 180 150 MAX. -
130
-
95
-
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XC6415 Series
ELECTRICAL CHARACTERISTICS (Continued)
Voltage Chart (Continued)
SETTING OUTPUT VOLTAGE (V) VOUT(T) 3.00 3.05 3.10 3.15 3.20 3.25 3.30 3.35 3.40 3.45 3.50 3.55 3.60 3.65 3.70 3.75 3.80 3.85 3.90 3.95 4.00
E-1 OUTPUT VOLTAGE (V) VOUT(E) MIN. 2.9700 3.0195 3.0690 3.1185 3.1680 3.2175 3.2670 3.3165 3.3660 3.4155 3.4650 3.5145 3.5640 3.6135 3.6630 3.7125 3.7620 3.8115 3.8610 3.9105 3.9600 MAX. 3.0300 3.0805 3.1310 3.1815 3.2320 3.2825 3.3330 3.3835 3.4340 3.4845 3.5350 3.5855 3.6360 3.6865 3.7370 3.7875 3.8380 3.8885 3.9390 3.9895 4.0400
E-2 DROPOUT VOLTAGE (mV) Vdif TYP. MAX.
90
-
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XC6415
Series
OPERATIONAL DESCRIPTION
The voltage divided by resistors Rx1 & Rx2 is compared with the internal reference voltage by the error amplifier. The P-channel MOSFET, which is connected to the VOUT pin, is then driven by the subsequent output signal. The output voltage at the VOUT pin is controlled & stabilized by a system of negative feedback. The current limit circuit and short protect circuit operate in relation to the level of output current. Further, the IC's internal circuitry can be shutdown via the EN pin's signal.
< XC6415BB Series >
XC6415xB/Bx series can quickly discharge the electric charge at the output capacitor (CL), when a low signal to the EN pin, which enables a whole IC circuit put into OFF state, is inputted via the N-channel transistor located between the VOUT pin when VIN is 6.0V (TYP.) and VOUT is and the VSS pin (cf. BLOCK DIAGRAM). The CL discharge resistance is set to 780 4.0V (TYP.). Moreover, discharge time of the output capacitor (CL) is set by the CL auto-discharge resistance (R) and the output capacitor (CL). By setting time constant of a CL auto-discharge resistance value [R] and an output capacitor value (CL) as ( =C x R), the output voltage after discharge via the N channel transistor is calculated by the following formulas. V = VOUT x e -t/ , or =ln VOUT(E) / V ( V : Output voltage after discharge, VOUT(E) : Output voltage, t: Discharge time, : CL auto-discharge resistance R Output capacitor (CL) value C) CL high-speed discharge function can be set by each regulator.
The XC6415 series includes a fold-back circuit, which aid the operations of the current limiter and circuit protection. When the load current reaches the current limit level, the fold-back circuit operates and output voltage drops. As a result of this drop in output voltage, output current also decreases. When the output pin is shorted, a current of about 30mA flows. The IC's internal circuitry can be shutdown via the signal from the EN pin with the XC6415 series. In shutdown mode, output at the VOUT pin will be pulled down to the VSS level via Rx1 & Rx2. However, as for the XC6415xB/Bx series, the CL auto-discharge resistor is connected in parallel to Rx1 and Rx2 while the power supply is applied to the VIN pin. Therefore, time until the VOUT pin reaches the VSS level becomes short. The output voltage becomes unstable, when the EN pin is open. If this IC is used with the correct output voltage for the EN pin, the logic is fixed and the IC will operate normally. However, supply current may increase as a result of through current in the IC's internal circuitry when medium voltage is input.
NOTES ON USE
1. Please use this IC within the stated absolute maximum ratings. The IC is liable to malfunction should the ratings be exceeded. 2. Where wiring impedance is high, operations may become unstable due to noise and/or phase lag depending on output current. Please wire the input capacitor (CIN) and the output capacitor (CL) as close to the IC as possible.
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XC6415 Series
TEST CIRCUITS
Circuit
Circuit
Circuit
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XC6415
Series
PACKAGING INFORMATION
SOT-26 USP-6C
USP-6C Recommended Pattern Layout
USP-6C Recommended Metal Mask Design
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XC6415 Series
1. The products and product specifications contained herein are subject to change without notice to improve performance characteristics. Consult us, or our representatives before use, to confirm that the information in this catalog is up to date. 2. We assume no responsibility for any infringement of patents, patent rights, or other rights arising from the use of any information and circuitry in this catalog. 3. Please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this catalog. 4. The products in this catalog are not developed, designed, or approved for use with such equipment whose failure of malfunction can be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. Atomic energy; aerospace; transport; combustion and associated safety equipment thereof.) 5. Please use the products listed in this catalog within the specified ranges. Should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives. 6. We assume no responsibility for damage or loss due to abnormal use. 7. All rights reserved. No part of this catalog may be copied or reproduced without the prior permission of Torex Semiconductor Ltd.
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