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ETC - 300mA MicroPower High Performance LDO

Numéro de référence AAT3238IGU-1.2-T1
Description 300mA MicroPower High Performance LDO
Fabricant ETC 
Logo ETC 





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AAT3238IGU-1.2-T1 fiche technique
AAT3238
300mA MicroPower™ High Performance LDO
General Description
The AAT3238 MicroPower™ Low Dropout Linear
Regulator is ideally suited for portable applications
where very fast transient response, extended battery
life and small size are critical. The AAT3238 has
been specifically designed for high speed turn on and
turn off performance, fast transient response, good
power supply ripple rejection (PSRR) and is reason-
ably low noise, making it ideal for powering sensitive
circuits with fast switching requirements.
Other features include low quiescent current, typical-
ly 70µA, and low dropout voltage which is typically
less than 400mV at the maximum output current level
of 300mA. The device is output short circuit protect-
ed and has a thermal shutdown circuit for additional
protection under extreme operating conditions.
The AAT3238 also features a low-power shutdown
mode for extended battery life. A reference bypass
pin has been provided to improve PSRR perform-
ance and output noise, by connecting a small exter-
nal capacitor from the AAT3238's reference output to
ground.
The AAT3238 is available in a space saving 6-pin
SOT23 or 8-pin SC70JW package in 14 factory pro-
grammed voltages of 1.2V, 1.5V, 1.6V, 1.8V, 1.85V,
2.0V, 2.3V, 2.5V, 2.7V, 2.8V, 2.85V, 3.0V, 3.3V or
3.5V.
Features
PowerLinear
• Low Dropout - 400mV at 300mA
• Guaranteed 300mA Output
• High accuracy ±1.5%
• 70µA Quiescent Current
• Fast line and load transient response
• High speed device turn-on and shutdown
• High Power Supply Ripple Rejection
• Low self noise
• Short circuit protection
• Over-Temperature protection
• Uses Low ESR ceramic capacitors
• Noise reduction bypass capacitor
• Shutdown mode for longer battery life
• Low temperature coefficient
• 14 Factory programmed output voltages
• SOT23 6-pin or SC70JW 8-pin package
Applications
• Cellular Phones
• Notebook Computers
• Portable Communication Devices
• Personal Portable Electronics
• Digital Cameras
Typical Application
VIN
IN OUT
AAT3238
VOUT
ON/OFF
EN
BYP
GND
1µF
10nF
2.2µF
GND
GND
3238.2004.01.0.94
1

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