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AAT3218IGV-3.3-T1 Datasheet

  • AAT3218IGV-3.3-T1

  • 150mA MicroPower⑩ High Performance LDO

  • 18頁(yè)

  • ETC

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150mA MicroPower鈩?High Performance LDO
General Description
The AAT3218 MicroPower鈩?Low Dropout Linear
Regulator 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, 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 70碌A(chǔ), and low dropout voltage which is typically
less than 200mV at the maximum output current level
of 150mA. The device is output short circuit protect-
ed and has a thermal shutdown circuit for additional
protection 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 the AAT3218's reference
output to ground.
The AAT3218 is available in a space saving 5-pin
SOT23 or 8-pin SC70JW package in 16 factory
programmed voltages of 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.
AAT3218
Features
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PowerLinear
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Low Dropout - 200mV at 150mA
Guaranteed 150mA Output
High accuracy 鹵1.5%
70碌A(chǔ) 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 protection
Over-Temperature protection
Uses Low 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
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Cellular Phones
Notebook Computers
Portable Communication Devices
Personal Portable Electronics
Digital Cameras
Typical Application
V
IN
IN
OUT
V
OUT
AAT3218
ON/OFF
1碌F
EN
GND
10nF
2.2碌F
BYP
GND
GND
3218.2004.02.1.0
1

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