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器件描述：150mA CMOS High Performance LDO
器件厂商：ANALOGICTECH [Advanced Analogic Technologies]
厂商主页：http://www.analogictech.com/
文件大小：283.72KB
文件页数：16
PDF阅读：AAT3215IJS-25-T1.pdf (点击阅读器件资料)
摘要：
Preliminary
Information
3215.2002.03.0.91 1
General Description
The AAT3215 MicroPower? Low Dropout Linear
Regulator is ideally suited for portable applications
where low noise, extended battery life and small
size are critical. The AAT3215 has been specifi-
cally designed for very low output noise perform-
ance, fast transient response and high power sup-
ply rejection ratio (PSRR), making it ideal for pow-
ering sensitive RF circuits.
Other features include low quiescent current, typi-
cally 95?A, 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. Areference 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 space saving 5-pin
SOT-23 or 8-pin SC70-JW package in 8 factory
programmed voltages of 2.5V, 2.7V, 2.8V, 2.85V,
2.9V, 3.0V, 3.3V, or 3.5V.
Features
? Low Dropout - 140mV at 150mA
? Guaranteed 150mAOutput
? High accuracy ±1.5%
? 95?AQuiescent Current
? High Power Supply Ripple Rejection
? 70 dB at 1kHz
? 50 dB at 10kHz
? Very low self noise 45?Vrms/rtHz
? Fast line and load transient response
? Short circuit protection
? Over-Temperature protection
? Uses Low ESRceramic capacitors
? Noise reduction bypass capacitor
? Shutdown mode for longer battery life
? Low temperature coefficient
? 8 Factory programmed output voltages
? SOT-23 5-pin or SC70-JW 8-pin package
Applications
? Cellular Phones
? Notebook Computers
? Portable Communication Devices
? Personal Portable Electronics
? Digital Cameras
AAT3215
150mACMOS High Performance LDO
Typical Application
AAT3215
EN
IN
OUT
BYP
GND
ON/OFF
1?F 10nF
2.2?F
V
IN
GND GND
VOUT
PowerLinear
?
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