供应集成电路AAT3215IGV-2.8-T1

General Description
The AAT3215 MicroPower™ low dropout (LDO)
linear regulator is ideally suited for portable applications
where low noise, extended battery life, and
small size are critical. The AAT3215 has been
specifically designed for very 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, typically
95μA, and low dropout voltage which is typically
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 performance
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 factory-
programmed voltages: 2.5V, 2.6V, 2.7V, 2.8V,
2.85V, 2.9V, 3.0V, 3.1V, 3.3V, or 3.6V.
Features
• 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
AAT3215
150mA CMOS High Performance LDO
Typical Application
AAT3215
EN
IN OUT
BYP
GND
ON/OFF
1μF 10nF 2.2μF
VIN
GND GND  
 

 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 

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