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AAT3216
150mA MicroPower™ LDO with PowerOK
Preliminary Information
3216.2002.12.0.92 1
General Description
The AAT3216 MicroPower™ Low Dropout Linear
Regulator is ideally suited for portable applications
where low noise, extended battery life and small
size are critical. The AAT3216 has been specifi-
cally designed for low output noise performance,
fast transient response and high power supply
rejection ratio (PSRR), making it ideal for powering
sensitive RF circuits.
Other features include low quiescent current, typi-
cally 70µA, and low dropout voltage which is typi-
cally less than 200mV at full output current. The
device is output short circuit protected and has a
thermal shutdown circuit for additional protection
under extreme conditions.
The AAT3216 also features a low-power shutdown
mode for extended battery life. A Power-OK open-
drain output signals when V
OUT
is in regulation.
The AAT3216 is available in a space saving 5-pin
SOT23 or 8-pin SC70-JW package in 12 factory
programmed voltages of 1.2V, 1.5V, 1.8V, 2.0V,
2.3V, 2.5V, 2.7V, 2.8V, 2.85, 3.0V, 3.3V, or 3.5V.
Features
• Low Dropout - 200mV at 150mA
• Guaranteed 150mA Output
• High accuracy ±1.5%
• 70µA Quiescent Current
• High Power Supply Ripple Rejection
• Low self noise
• PowerOK (POK) Output
• Fast line and load transient response
• Short circuit protection
• Over-Temperature protection
• Uses Low ESR ceramic capacitors
• Shutdown mode for longer battery life
• Low temperature coefficient
• 12 Factory programmed output voltages
• SOT23 5-pin or SC70-JW 8-pin package
Applications
• Cellular Phones
• Notebook Computers
• Desktop Computers
• Portable Communication Devices
• Personal Portable Electronics
• Digital Cameras
Typical Application
AAT3216
EN
IN
OUT
POK
GND
ON/OFF
1µF
2.2µF
V
IN
GND GND
V
OUT
POK
100k
PowerLinear
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