AAT3242ITP-WN-T1 Advanced Analog Technology, Inc., AAT3242ITP-WN-T1 Datasheet

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AAT3242ITP-WN-T1

Manufacturer Part Number
AAT3242ITP-WN-T1
Description
300mA/150mA Dual CMOS LDO Linear Regulator
Manufacturer
Advanced Analog Technology, Inc.
Datasheet
General Description
The AAT3242 is a dual low dropout linear regulator with
Power OK (POK) outputs. Two integrated regulators pro-
vide a high power 300mA output and a lower power
150mA output, making this device ideal for use with
microprocessors and DSP cores in portable products.
Two POK pins provide open drain output signals when
their respective regulator output is within regulation.
The AAT3242 has independent input voltage and enable
pins for increased design flexibility. This device features
a very low quiescent current (140μA typical) and low
dropout voltages (typically 200mV and 400mV at the full
output current level), making it ideal for portable appli-
cations where extended battery life is critical. The
AAT3242 has complete over-current/short-circuit and
over-temperature protection circuits to guard against
extreme operating conditions.
The AAT3242 is available in the space-saving, Pb-free,
12-pin TSOPJW and TDFN33 packages. This device is
capable of operation over the -40°C to +85°C tempera-
ture range.
Typical Application
VIN
3242.2008.08.1.11
PowerLinear
TM
Enable A
Enable B
INA
ENA
INB
ENB
AAT3242
w w w . a n a l o g i c t e c h . c o m
300mA/150mA Dual CMOS LDO Linear Regulator
OUTA
POKA
OUTB
POKB
GND
Features
• High/Low Current Outputs, 300mA/150mA
• Low Dropout:
• High Output Voltage Accuracy: ±1.5%
• High PSRR: 65dB at 1kHz
• 70μA Quiescent Current for Each LDO
• Over-Current/Short-Circuit Protection
• Over-Temperature Protection
• Two POK Outputs
• Independent Power and Enable Inputs
• Uses Low Equivalent Series Resistance (ESR) Ceramic
• 12-Pin TSOPJW and TDFN33 Packages
• -40°C to +85°C Temperature Range
Applications
• Cellular Phones
• Digital Cameras
• Handheld Instruments
• Microprocessor / DSP Core / I/O Power
• Notebook Computers
• PDAs and Handheld Computers
• Portable Communication Devices
Capacitors
LDO A: 400mV at 300mA
LDO B: 200mV at 150mA
100kΩ
100kΩ
POKA
POKB
2.2μF
PRODUCT DATASHEET
AAT3242
2.2μF
OUTPUT A
OUTPUT B
1

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AAT3242ITP-WN-T1 Summary of contents

Page 1

PowerLinear TM General Description The AAT3242 is a dual low dropout linear regulator with Power OK (POK) outputs. Two integrated regulators pro- vide a high power 300mA output and a lower power 150mA output, making this device ideal for use ...

Page 2

PowerLinear PowerLinear TM TM Pin Descriptions Pin # Symbol TSOPJW-12 TDFN33- ENA 10, EP GND 4 11 POKA 5 9 OUTB 6 7 INB 7 6 ENB 10 5 POKB 11 3 OUTA ...

Page 3

PowerLinear PowerLinear TM TM Absolute Maximum Ratings Symbol Description V Input Voltage IN V Maximum EN to Input Voltage ENIN(MAX Output Current 2 OUT T Operating Junction Temperature Range J T Maximum Soldering Temperature (at leads, 10 sec) ...

Page 4

PowerLinear PowerLinear TM TM Electrical Characteristics 1.0V for V options greater than 1.5V OUT(NOM) OUT 1.0μ -40°C to +85°C, unless otherwise noted. Typical values are T A Symbol Description LDO A; I ...

Page 5

PowerLinear PowerLinear TM TM Electrical Characteristics 1.0V for V options greater than 1.5V OUT(NOM) OUT 1.0μ -40°C to +85°C, unless otherwise noted. Typical values are T A Symbol Description LDO B; I ...

Page 6

PowerLinear PowerLinear TM TM Typical Characteristics Unless otherwise noted 5V Dropout Voltage vs. Temperature 540 I = 300mA 480 L 420 360 300 I = 100mA 150mA 240 L 180 120 60 0 ...

Page 7

PowerLinear PowerLinear TM TM Typical Characteristics Unless otherwise noted 5V Turn-On Time and POK Delay V ENABLE V (500mV/div) OUT V (500mV/div) POK Time (10μs/div) Load Transient Response 2.90 2.85 V OUT 2.80 2.75 2.70 I ...

Page 8

PowerLinear PowerLinear TM TM Typical Characteristics Unless otherwise noted 5V Self Noise 10 1 0.1 0.01 0.01 0 Frequency (kHz 300mA/150mA Dual CMOS LDO Linear Regulator 300mA/150mA Dual CMOS LDO Linear Regulator ...

Page 9

PowerLinear PowerLinear TM TM Functional Block Diagram INA ENA INB ENB Functional Description The AAT3242 is a high performance dual LDO regulator with two Power OK pins. The first regulator (A) sources 300mA of current, while the second (B) regulator ...

Page 10

... ESR when compared to a smaller sized capacitor of an equivalent material and capacitance value. These larger devices can improve circuit transient response when compared to an equal value capacitor in a smaller package size. Consult capacitor vendor datasheets carefully when selecting capacitors for LDO . OUT regulators. POK Output ...

Page 11

PowerLinear TM Short-Circuit Protection The AAT3242 contains internal short-circuit protection that will trigger when the output load current exceeds the internal threshold limit. Under short-circuit condi- tions, the output of the LDO regulator will be current limited until the short-circuit ...

Page 12

PowerLinear TM This formula can be solved for I OUTA maximum output current for LDOA (2×V × D(MAX) IN GND OUTA(MAX) IN OUTA The following is an example for ...

Page 13

... PRODUCT DATASHEET PRODUCT DATASHEET AAT3242 AAT3242 Part Number (Tape and Reel) 2 AAT3242ITP-WN-T1 AAT3242ITP-WI-T1 AAT3242ITP-TR-T1 AAT3242ITP-TN-T1 AAT3242ITP-TI-T1 AAT3242ITP-TG-T1 AAT3242ITP-SG-T1 AAT3242ITP-QT-T1 AAT3242ITP-QQ-T1 AAT3242ITP-QO-T1 AAT3242ITP-QN-T1 ...

Page 14

PowerLinear PowerLinear TM TM Package Information 0.50 BSC 0.50 BSC 0.50 BSC 0.50 BSC 0.50 BSC 3.00 ± 0.10 All dimensions in millimeters 300mA/150mA Dual CMOS LDO Linear Regulator 300mA/150mA Dual CMOS LDO Linear Regulator TSOPJW-12 0.20 + ...

Page 15

PowerLinear PowerLinear TM TM Index Area 3.00 ± 0.05 Top View 1. The leadless package family, which includes QFN, TQFN, DFN, TDFN, and STDFN, has exposed copper (unplated) at the end of the lead terminals due to the manufacturing process. ...

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