AAT3215 Datasheet, PDF (1/18 Pages) Advanced Analogic Technologies – 150mA CMOS High Performance LDO

AAT3215
150mA CMOS High Performance LDO
General Description
Features
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The AAT3215 MicroPower™ low dropout (LDO)
linear regulator is ideally suited for portable appli-
cations where low noise, extended battery life, and
small size are critical. The AAT3215 has been
specifically designed for very low output noise per-
formance, 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 95µA, and low dropout voltage which is typi-
cally less than 140mV at full output current. The
device is output short-circuit protected and has a
thermal shutdown circuit for additional protection
under extreme conditions.
The AAT3215 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 an external
capacitor from the AAT3215's reference output to
ground.
The AAT3215 is available in a Pb-free, space-saving
5-pin SOT23 or 8-pin SC70JW package in ten fac-
tory-programmed voltages: 2.5V, 2.6V, 2.7V, 2.8V,
2.85V, 2.9V, 3.0V, 3.1V, 3.3V, or 3.6V.
• Low Dropout: 140mV at 150mA
• Guaranteed 150mA Output
• High Accuracy ±1.5%
• 95µA Quiescent Current
• High Power Supply Ripple Rejection
— 70dB at 1kHz
— 50dB at 10kHz
• Very Low Self Noise: 45µVrms
• Fast Line and Load Transient Response
• Short-Circuit Protection
• Over-Temperature Protection
• Uses Low Equivalent Series Resistance
(ESR) Ceramic Capacitors
• Noise Reduction Bypass Capacitor
• Shutdown Mode for Longer Battery Life
• Low Temperature Coefficient
• Ten Factory-Programmed Output Voltages
• SOT23 5-Pin or SC70JW 8-Pin Package
Applications
• Bluetooth™ Headsets
• Cellular Phones
• Digital Cameras
• Notebook Computers
• Personal Portable Electronics
• Portable Communication Devices
Typical Application
VIN
IN
OUT
VOUT
AAT3215
ON/OFF
EN
BYP
GND
1μF
10nF
2.2μF
GND
GND
3215.2006.05.1.6
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