AAT3218IJS-3.5-T1 查看數據表（PDF） - Advanced Analogic Technologies
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AAT3218IJS-3.5-T1 Datasheet PDF : 18 Pages
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AAT3218
150mA MicroPower™ High Performance LDO
General Description
Features
PowerLinear™
The AAT3218 MicroPower low dropout linear regula-
tor is ideally suited for portable applications where
very fast transient response, extended battery life,
and small size are critical. The AAT3218 has been
specifically designed for high-speed turn-on and turn-
off performance, fast transient response, and 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, typically less than
200mV at the maximum output current level of
150mA. The device is output short-circuit protected
and has a thermal shutdown circuit for additional pro-
tection under extreme operating conditions.
The AAT3218 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
external capacitor from device reference output to
ground.
The AAT3218 is available in a Pb-free, space-sav-
ing 5-pin SOT23 or 8-pin SC70JW package in 16
factory-programmed voltages: 1.2V, 1.4V, 1.5V,
1.8V, 1.9V, 2.0V, 2.3V, 2.5V, 2.6V, 2.7V, 2.8V,
2.85V, 2.9V, 3.0V, 3.3V, or 3.5V.
Typical Application
• Low Dropout: 200mV at 150mA
• Guaranteed 150mA 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 and Over-Temperature
Protection
• Uses Low Equivalent Series Resistance
(ESR) Ceramic Capacitors
• Output Noise Reduction Bypass Capacitor
• Shutdown Mode for Longer Battery Life
• Low Temperature Coefficient
• 16 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
VIN
IN
OUT
VOUT
AAT3218
ON/OFF
EN
BYP
GND
1μF
10nF
2.2μF
GND
GND
3218.2006.04.1.8
1
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