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AIC1189
Ultra LDO 2A Linear Regulator With Adjustable & Bypass Pin
FEATURES
Guaranteed 2A Output Current. Fast Response in Line/Load Transient. Wide Operating Voltage Ranges: 2.3V to 5.5V. 0.01A Shutdown Standby Current . Low Quiescent Current: 80A. Fixed: 1.2V, 1.5V, 1.8V, 2.0V, 2.5V, 2.7V, 3.0V, 3.3V, 3.5V, 3.7V, 3.8V Output Voltage. Adjustable Output Voltage are available from 0.8~4.5V. Low Dropout330mV at 1.5A and 2.8V output voltage, 440mV at 2A and 2.8V output voltage. High PSRR70dB at 1kHz. Active Low or High Shutdown Control.Current Limit and Thermal Protection. Available in 2% Output Tolerance. Available in SOT-223 & TO-220 (3 pin) & SOP8 (8 pin) and TO-252 &TO-263 (3 & 5 pin) Package.
DESCRIPTION
A low noise, high PSRR and ultra low dropout linear regulator AIC1189 is optimized for low ESR ceramic capacitors operation with 2A continuous current. The AIC1189 is designed for portable and wireless devices with demanding performance and space requirements. The AIC1189 offers high precision output voltage of 2% tolerance. Output voltage can also be adjusted for those other than the preset values. A noise bypass pin is available for further reduction of output noise. The bypass pin could be floating if it's unnecessary. At 2A load current and 2.8V output voltage, a 440mV dropout is performed. The quality of low quiescent current and low dropout voltage makes this device ideal for battery power applications. The high ripple rejection and low noise of the AIC1189 provide enhanced performances for critical applications such as cellular phones, and PDAs. In addition, a logic-level shutdown input is included, which reduce supply current to 0.01A (typ.) in shutdown mode with fast turn-on time less than 100s. The AIC1189's current limit and thermal protection provide protection against any overload condition that would create excessive junction temperatures.
APPLICATIONS
LCD TV, LCD Monitor, DPF. Networking, STB. Portable AV Equipment. Note Book PC Applications. PC Peripherals.
TYPICAL APPLICATION CIRCUIT
AIC1189-33 Vin 1 VIN GND Cin 4.7uF 2 VOUT 3
Vin 2 1 Cin 4.7uF 3 AIC1189AL-33 VIN EN GND VOUT ADJ 4 5 R1 300k
Fixed Linear Regulator
Analog Integrations Corporation
Vout 3.3V Cout 4.7uF
Vout 2.8V
ENABLE
R2 120k
Cout 4.7uF
Adjustable Linear Regulator
Si-Soft Research Center 3A1, No.1, Li-Hsin Rd. I, Science Park, Hsinchu 300, Taiwan, R.O.C. TEL: 886-3-5772500, FAX: 886-3-5772510 www.analog.com.tw
DS-1189G-02 011909
1
AIC1189
TYPICAL APPLICATION CIRCUIT
EN/SD SW1 1 Vin Vout 2.8V Cin 4.7uF Cout 4.7uF R2 120K 2 3 R1 300K 4 AIC1189L EN/SD VIN VOUT ADJ GND GND BP GND 8 7 6 5 Cbp 22nF
(Continued)
Adjustable Linear Regulator in SOP-8 Package
ORDERING INFORMATION
AIC1189-XXXXX XX PACKING TYPE TR: TAPE & REEL TB: TUBE PACKAGE TYPE Y3: SOT-223 E3: TO-252 M3: TO-263 T3: TO-220 P: Lead Free Commercial G: Green Package OUTPUT VOLTAGE 12: 1.2V 15: 1.5V 18: 1.8V 20: 2.0V 25: 2.5V 27: 2.7V 30: 3.0V 33: 3.3V 35: 3.5V 37: 3.7V 38: 3.8V (Of a unit of 0.1V within 0.8~4.5V, additional voltage versions are available on demand) 3 PIN CONFIGURATION SOT-223 (Y3) TOP VIEW 1: VIN 2: GND (TAB) 3: VOUT
1 2 3
TO-252 (E3) TOP VIEW 1: VIN 2: GND (TAB) 3: VOUT
1 2 3
TO-263 (M3) TOP VIEW 1: VIN 2: GND (TAB) 3: VOUT TO-220 (T3) TOP VIEW 1: VIN 2: GND (TAB) 3: VOUT
12 3
1 2 3
Example: AIC1189-18PE3TR 1.8V Version, in TO-252 Lead Free Package & Tape & Reel Packing Type
2
AIC1189
ORDERING INFORMATION
AIC1189XX-XXXXX XX PACKING TYPE TR: TAPE & REEL TB: TUBE PACKAGE TYPE E5: TO-252-5 M5: TO-263-5 P: Lead Free Commercial G: Green Package OUTPUT VOLTAGE 12: 1.2V 15: 1.5V 18: 1.8V 20: 2.0V 25: 2.5V 27: 2.7V 30: 3.0V 33: 3.3V 35: 3.5V 37: 3.7V 38: 3.8V (Of a unit of 0.1V within 0.8~4.5V, additional voltage versions are available on demand) ENABLE TYPE L: Chip Enable Low H: Chip Enable High B: Bypass A: ADJ Example: AIC1189BH-18PM5TR With Bypass Pin, Chip Enable High, 1.8V Version, in TO-263-5 Lead Free Package & Tape & Reel Packing Type
(Continued)
5 PIN CONFIGURATION TO-252-5 (E5) TOP VIEW 1: EN / EN 2: VIN 3: GND (TAB) 4: VOUT 5: BP/ ADJ TO-263-5 (M5) TOP VIEW 1: EN / EN 2: VIN 3: GND (TAB) 4: VOUT 5: BP/ ADJ
12 345 12345
3
AIC1189
ORDERING INFORMATION
AIC1189X-XXXXX XX PACKING TYPE TR: TAPE & REEL TB: TUBE PACKAGE TYPE R8: SOP-8 G: Green Package
(Continued)
8 PIN CONFIGURATION SOP-8 (R8) Exposed Pad (Heat Sink) TOP VIEW 1: EN / EN 2: VIN 3: VOUT 4: ADJ 5: GND (TAB) 6: BP 7: GND (TAB) 8: GND (TAB)
1 2 3 4 8 7 6 5
OUTPUT VOLTAGE 12: 1.2V 15: 1.5V 18: 1.8V 20: 2.0V 25: 2.5V 27: 2.7V 30: 3.0V 33: 3.3V 35: 3.5V 37: 3.7V 38: 3.8V (Of a unit of 0.1V within 0.8~4.5V, additional voltage versions are available on demand) ENABLE TYPE L: Chip Enable Low H: Chip Enable High
Example:
AIC1189H-18GR8TR Chip Enable High, 1.8V Version, in SOP-8 Green Package & Tape & Reel Packing Type
Marking
Part No AIC1189-XXPY3 Marking HAxxP Part No AIC1189-xxGY3 Marking HAxxG
xx represents output voltage. (08=0.8V, 09=0.9V, ......., 44=4.4V, 45=4.5V)
4
AIC1189
ABSOLUTE MAXIMUM RATINGS
Input Voltage ....................................................................................................................................... 6V EN Pin Voltage .................................................................................................................................... 6V Noise Bypass Terminal Voltage .......................................................................................................... 6V Operating Temperature Range ............................................................................................ -40C~85C Maximum Junction Temperature .................................................................................................. 150C Storage Temperature Range ............................................................................................. -65C~150C Lead Temperature (Soldering, 10 sec) ......................................................................................... 260C Thermal Resistance (Junction to Case) SOT-223 ............................................................... 15C /W TO-252 .................................................................... 8C /W TO-263 .................................................................... 3C /W TO-220 .................................................................... 3C /W SOP-8 (Exposed Pad) .......................................... 15C /W Thermal Resistance (Junction to Ambient) SOT-223 ............................................................. 130C /W (Assume no ambient airflow, no heat sink) TO-252 ................................................................ 100C /W TO-263 .................................................................. 60C /W TO-220 .................................................................. 50C /W SOP-8 (Exposed Pad) 60C /W
Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
5
AIC1189
ELECTRICAL CHARACTERISTICS
(CIN = Cout = 4.7F, CBP = 22nF, VIN = VOUT + 1V, TJ=25C, unless otherwise specified) (Note 1)
PARAMETER Input Voltage (Note 2) Output Voltage Tolerance Continuous Output Current IOUT =1mA TEST CONDITIONS SYMBOL VIN VOUT IOUT 0.4V, 1.6V, IQ MIN. 2.3 -2 2 TYP. MAX. 5.5 2 UNIT V % A
Output Current Limit
RLOAD = 0.1
IOUT = 1.5A, 0.8VVOUT<2V IOUT = 2A, 0.8VVOUT<2V Dropout Voltage IOUT = 1.5A, 2VVOUT<2.8V IOUT = 2A, 2VVOUT<2.8V VDROP 450 600 330 440 VLIR VLOR PSRR TC VIN = VOUT + 1V TSD TSD 2.5 5 70 24 50 150 20
IOUT = 2A, VOUT Line Regulation Load Regulation Ripple Rejection Output Noise Voltage Temperature Coefficient Thermal Shutdown Temperature Thermal Shutdown Hysteresis ADJ Pin Specifications ADJ Pin Current ADJ Pin Threshold Reference Voltage Tolerance
VIN = VOUT + 1V to 5.5V, IOUT =1mA IOUT =1mA to 2A f=1KHz, Ripple=0.5Vp-p, CBP = 22nF, f= 10~100KHz
VADJ = VREF
IADJ VTH(ADJ) VREF 0.05 0.784
10 0.1 0.8
100 0.2 0.816
nA V V

IOUT = 1.5A, VOUT
2.8V
2.8V
=
Standby Current
Chip Enable High, VEN
=
Chip Enable Low, VEN
GND Pin Current
Chip Enable High, VEN IOUT = 2A
Chip Enable Low, VEN IOUT = 2A
Quiescent Current
Chip Enable High, VEN IOUT = 0 mA
Chip Enable Low, VEN IOUT = 0 mA
80
110
A
0.4V, 1.6V, VIN 0 IGND
90
120
A
ISTBY IIL 2.2
0.01 3.2
0.5 3.9 1500 1500 600 800 530 700 10 15
A A
mV
mV mV dB Vrms ppm/
6
AIC1189
ELECTRICAL CHARACTERISTICS (Continued)
PARAMETER Shutdown Pin Specifications Shutdown Pin Current Shutdown Exit Delay Time Max Output Discharge Resistance to GND during Shutdown Chip Enable Low, Output OFF, VIN = 2.3V to 5.5V Chip Enable High, Output ON, VIN = 2.3V to 5.5V Chip Enable Low, Output ON, VIN = 2.3V to 5.5V Chip Enable High, Output OFF, VIN = 2.3V to 5.5V VEN = VIN or GND IOUT = 30mA IEN t RDSON_ CLMP 0 100 20 100 100 nA S TEST CONDITIONS SYMBOL MIN. TYP. MAX. UNIT
VENH
1.6 V
Shutdown Input Threshold
VENL
0.4
Note 1: Specifications are production tested at T =25 Specifications over the -40C to 85 operating C. C A temperature range are assured by design, characterization and correlation with Statistical Quality Controls (SQC). Note 2: For SOP-8 Package, VIN = 2.3V to 5.0V.
7
AIC1189
TYPICAL PERFORMANCE CHARACTERISTICS
90
90
VIN = VOUT + 1V
85
85
Quiescent Current (A)
Ground Current (A)
80
VOUT = 1.8V
80 VOUT = 3.3V 75 VOUT = 1.8V VOUT = 1.2V
VOUT = 3.3V
75 VOUT = 1.2V 70
70
65
2.5
3.0
3.5
4.0
4.5
5.0
5.5
65 1E-3
0.01
0.1
1
10
100
Input Voltage (V)
Fig1. Quiescent Current vs. Input Voltage
Loading Current (mA)
Fig2. Ground Current vs. Loading Current
1.00 0.75
VIN = VOUT + 1V Quiescent Current (A)
90
VIN = VOUT + 1V
85 80 75 VOUT = 1.2V 70 65 60 -40
Output Voltage Variation (%)
0.50 0.25 0.00 -0.25 -0.50 -0.75 -1.00 -40 -20 0 20 40
o
VOUT = 1.8V
VOUT = 3.3V
VOUT = 1.8V
VOUT = 1.2V VOUT = 3.3V
60
80
-20
0
20
40
o
60
80
Temperature ( C)
Fig3. Output Voltage Variation vs. Temperature
800
Temperature ( C)
Fig4. Quiescent Current vs. Temperature
600
VOUT = 3.3V
500
700
VOUT = 1.8V
T = 85 C 600 T = 25 C 500 400 Minimum Operation Voltage 300 200 1.2 T = -40 C
o o o
Dropout Voltage (mV)
400 300
T = 25 C
o
T = -40 C 200 100 0
o
Dropout Voltage (mV)
T = 85 C
o
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
Output Current (A)
Fig5. Dropout Voltage vs. Output Current
Output Current (A)
Fig6. Dropout Voltage vs. Output Current
8
AIC1189
TYPICAL PERFORMANCE CHARACTERISTICS
(Continued)
1.224 1.216
1.224 VIN = 2.3V 1.216
Output Voltage (V)
1.208 1.200 1.192 1.184 1.176
Output Voltage (V)
2.5 3.0 3.5 4.0 4.5 5.0 5.5
1.208 1.200 1.192 1.184 1.176 1E-3
0.01
0.1
1
10
100
Input VOltage (V)
Fig7. Output Voltage vs. Input Voltage
1.836 1.824 1.836
Loading Current (mA) Fig8. Output Voltage vs. Loading Current
VIN = 2.8V 1.824
Output Voltage (V)
1.812 1.800 1.788 1.776 1.764
Output Voltage (V)
2.5 3.0 3.5 4.0 4.5 5.0 5.5
1.812 1.800 1.788 1.776 1.764
0.01
0.1
1
10
100
Input VOltage (V) Fig9. Output Voltage vs. Input Voltage
Loading Current (mA) Fig10. Output Voltage vs. Loading Current
3.366 3.344
3.366 VIN = 4.3V 3.344
Output Voltage (V)
3.322 3.300 3.278 3.256 3.234
Output Voltage (V)
3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.4
3.322 3.300 3.278 3.256 3.234
0.01
0.1
1
10
100
Input VOltage (V) Fig11. Output Voltage vs. Input Voltage
Loading Current (mA) Fig12. Output Voltage vs. Loading Current
9
AIC1189
TYPICAL PERFORMANCE CHARACTERISTICS
VOUT = 1.2V IOUT = 1mA to 2A VOUT = 1.2V
(Continued)
VOUT Ripple
VIN
IOUT = 1A
IOUT VOUT Ripple
Fig13. Load Transient Response at VIN=2.3V, VOUT=1.2V
Fig14. Line Transient Response at VOUT=1.2V, IOUT=1A
VOUT = 1.8V
IOUT = 1mA to 2A
VOUT = 1.8V
IOUT = 1A
VOUT Ripple
VIN
IOUT VOUT Ripple
Fig15. Load Transient Response at VIN=2.8V, VOUT=1.8V
Fig16. Line Transient Response at VOUT=1.8V, IOUT=1A
VOUT = 3.3V
IOUT = 1mA to 2A
VOUT = 3.3V
IOUT = 1A
VOUT Ripple
VIN
IOUT VOUT Ripple
Fig17. Load Transient Response at VIN=4.3V, VOUT=3.3V
Fig18. Line Transient Response at VOUT=3.3V, IOUT=1A
10
AIC1189
TYPICAL PERFORMANCE CHARACTERISTICS
CBP = 0nF
(Continued)
CBP = 0.1nF
EN
EN
VOUT IIN
VOUT IIN
Fig19. Start-up waveform without bypass capacitor
Fig20. Start-up waveform with 0.1nF bypass capacitor
CBP = 22nF
EN
EN
VOUT IIN VOUT
Fig21. Start-up waveform with 22nF bypass capacitor
Fig22. Shutdown Transient
-20 -30 -40 VIN = 5V, IOUT = 10mA CIN = COUT = 4.7F
PSRR (dB)
-50 -60 -70 -80 10 100 1k 10k 100k 1M
Frequency (Hz)
Fig23. PSRR vs. Frequency
11
AIC1189
BLOCK DIAGRAM
PIN DESCRIPTION
VIN GND VOUT - Power supply input pin. Bypass with a 4.7F capacitor to GND - Ground. - Regulator Output pin. Sources up to 2A.
EN (5 Pin and 8 Pin) - Chip Enable (Active Low). This pin isn't allowed to float. EN (5 Pin and 8 Pin) - Chip Enable (Active High). This pin isn't allowed to float. BP (5 Pin and 8 Pin) - Bypass pin. It should be connected to external 22nF capacitor to GND to reduce output noise. The bypass pin could be floating if it's unnecessary. ADJ (5 Pin and 8 Pin) - The output voltage can either be set by the internal feedback resistors when this pin is grounded, or be set by the external feedback resistors when using a resistive divider.
12
AIC1189
APPLICATION INFORMATION
The AIC1189 is a high performance linear regulator that provides low-dropout voltage and low quiescentcurrent. The device is available in an adjustable version and fixed output voltages ranging from 1.2V to 3.8V, and the device can supply loads up to 2A. SHUTDOWN By connecting EN(EN) pin to VIN(ground), the AIC1189 can be shut down to reduce the supply current to 0.01A(typ.). At this operation mode, the output voltage of AIC1189 is equal to 0V. CURRENT LIMIT The AIC1189 includes a current limiter, which monitors and controls the maximum output current. If the output is overloaded or shorted to ground, this can protect the device from being damaged. THERMAL PROTECTION The AIC1189 includes a thermal-limiting circuit, which is designed to protect the device against overload condition. When the junction temperature exceeds TJ=150C, the thermal-limiting circuit turns off the pass transistor and allows the IC to cool. For continuous load condition, maximum rating of junction temperature must not be exceeded. INPUT-OUTPUT CAPACITORS Linear regulators require input and output capacitors to maintain stability. Input capacitor at 4.7F with a 4.7F ceramic output capacitor is recommended. To avoid oscillation, it is recommended to follow the figure of "Region of Stable COUT ESR vs. Load Current" to choose proper capacitor specifications. When choosing the input and output ceramic capacitors, X5R and X7R types are recommended because they retain their capacitance over wider ranges of voltage and temperature than other types. NOISE BYPASS CAPACITOR A 22nF bypass capacitor at BP pin can reduce output voltage noise. The bypass pin can be floating if it's unnecessary. OUTPUT VOLTAGE PROGRAMMING POWER DISSIPATION The maximum power dissipation of AIC1189 depends on the thermal resistance of its case and circuit board, the temperature difference between the die junction and ambient air, and the rate of airflow. The rate of temperature rise is greatly affected by the mounting pad configuration on the PCB, the board material, and the ambient temperature. When the IC mounting with good thermal conductivity is used, the junction temperature will be low even when large power dissipation applies. The power dissipation across the device is P = IOUT (VIN-VOUT) The maximum power dissipation is: The output voltage of AIC1189 linear regulator can be set by its internal feedback resistors when the ADJ pin is grounded. In addition, the output voltage of AIC1189 linear regulator can be set by the external feedback resistors when connecting a resistive divider R1 and R2. While connecting a resistive divider, VOUT can be calculated as:
R VOUT = 0.8 x 1 + 1 R 2
The resistive divider should sit as close to ADJ pin as possible.
PMAX =
(TJ-max - TA ) R JA
(150C), and TA is the ambient
Where TJ-max is the maximum allowable junction temperature temperature suitable in application. As a general rule, the lower temperature is, the better reliability of the device is. So the PCB mounting pad should provide maximum thermal conductivity to maintain low device temperature. LAYOUT CONSIDERATION Connect the bottom-side pad (available in SOP-8 Exposed Pad) to a large ground plane. Use as much copper as possible to decrease the thermal resistance of the device.
13
PHYSICAL DIMENSIONS
SOT-223 PACKAGE OUTLINE DRAWING
AIC1189
14
8 CSB 06.4 CSB 03.2 07.3 03.7 0 7.6 33.0 01.3 48.0 56.1 01.0 08.1 . X AM SRETEMIL LIM 322-TOS .NIM 03.3 07.6 03.6 32.0 09.2 66.0 55. 1 20.0 0 09.0 L 1e e 1E E D c 2b b 2A 1A A
L O B M Y S
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L O B M Y S
TO-252-3L PACKAGE OUTLINE DRAWING
AIC1189
15
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AIC1189
16
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L O B M Y S
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TO-263-3L PIN PACKAGE OUTLINE DRAWING
AIC1189
17
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AIC1189
18
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L O B M Y S
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TO-220 PACKAGE OUTLINE DRAWING
AIC1189
19
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L O B M Y S
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Note:
Information provided by AIC is believed to be accurate and reliable. However, we cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AIC product; nor for any infringement of patents or other rights of third parties that may result from its use. We reserve the right to change the circuitry and specifications without notice. Life Support Policy: AIC does not authorize any AIC product for use in life support devices and/or systems. Life support devices or systems are devices or systems which, (I) are intended for surgical implant into the body or (ii) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user.
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