AAT3236
300mA CMOS High Performance LDO
General Description
The AAT3236 is a MicroPower鈩?Low Dropout
Linear Regulator designed to deliver a continuous
300mA output load current and is capable of han-
dling short duration current peaks up to 500mA.
With a very small footprint SOT23-5 package it is
ideally suited for portable applications where low
noise, high power supply ripple rejection, extended
battery life and small size are critical. The AAT3236
features fast transient response and low output self
noise for powering sensitive RF circuitry. Other fea-
tures include low quiescent current, typically
100碌A(chǔ), and low dropout voltage, typically 300mV at
full output load current. The device has internal out-
put short circuit protection and thermal shutdown to
prevent damage under extreme conditions.
The AAT3236 also features a low-power shutdown
mode for longer battery life. A bypass pin is pro-
vided to improve PSRR performance by connect-
ing an external capacitor from the AAT3236's refer-
ence output to ground.
The AAT3236 is available in a space saving
SOT23-5 or SC70JW-8 package in 7 factory pro-
grammed voltages of 2.5V, 2.7V, 2.8V, 2.85V, 3.0V,
3.3V, or 3.5V.
Features
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PowerLinear
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500mA Peak Output Current
Low Dropout - Typically 300mV at 300mA
Guaranteed 300mA Output
High accuracy 鹵1.5%
100碌A(chǔ) Quiescent Current
High Power Supply Ripple Rejection
鈥?70 dB at 1kHz
鈥?50 dB at 10kHz
Very low self noise 45碌Vrms/rtHz
Noise reduction bypass capacitor
Short circuit protection
Over-Temperature protection
Shutdown mode for longer battery life
Low temperature coefficient
7 Factory programmed output voltages
SOT-23 5-pin or SC70JW 8-pin package
Preliminary Information
Applications
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Cellular Phones
Notebook Computers
Portable Communication Devices
Personal Portable Electronics
Typical Application
V
IN
IN
V
OUT
AAT3236
OUT
BYP
ON/OFF
EN
GND
1碌F
10nF
2.2碌F
GND
GND
3236.2001.11.0.9
1
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