AAT3201
150mA OmniPower™ LDO Linear Regulator
General Description
The AAT3201 PowerLinear OmniPower low dropout
(LDO) linear regulator is ideal for systems where a
low-cost solution is critical. This device features
extremely low quiescent current, typically 20µA.
Dropout voltage is also very low, typically 200mV.
The AAT3201 has an enable pin feature which,
when pulled low, will enter the LDO regulator into
shutdown mode, removing power from its load and
offering extended power conservation capabilities
for portable, battery-powered applications.
The AAT3201 has output short-circuit and over-
current protection. In addition, the device has an
over-temperature protection circuit that will shut
down the LDO regulator during extended over-cur-
rent events.
The AAT3201 is available in the Pb-free, space-sav-
ing 5-pin SOT23 package. The device is rated over
the -40°C to +85°C temperature range. Since only
a small, 1µF ceramic output capacitor is recom-
mended, the AAT3201 is a truly cost-effective volt-
age conversion solution.
The AAT3201 is similar to the AAT3200 with the
exception that it offers further power savings with
its enable pin.
Features
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PowerLinear
™
20µA Quiescent Current
Low Dropout: 200mV (typical)
Guaranteed 150mA Output
High Accuracy: ±2%
Current Limit Protection
Over-Temperature Protection
Extremely Low Power Shutdown Mode
Low Temperature Coefficient
Factory-Programmed Output Voltages
— 1.8V to 3.5V
Stable Operation With Virtually Any Output
Capacitor Type
5-Pin SOT23 Package
Applications
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Cellular Phones
Consumer Electronics
Typical Application
INPUT
IN
OUT
OUTPUT
AAT3201
ENABLE
C
IN
1µF
EN
GND
C
OUT
1µF
GND
GND
3201.2006.01.1.2
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ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
