AAT3237IJS-2.3-T1 datasheet(8/13 Pages) ANALOGICTECH

Part #	AAT3237IJS-2.3-T1

Description	300mA MicroPower??LDO with PowerOK

Download	13 Pages

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Manufacturer	ANALOGICTECH [Advanced Analogic Technologies]

Direct Link	http://www.analogictech.com

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8 / 13 page

AAT3237

300mA MicroPower™ LDO with PowerOK

8

3237.2006.01.1.4

Functional Description

The AAT3237 is intended for LDO regulator appli-

cations where output current load requirements

range from no load to 300mA.

The advanced circuit design of the AAT3237 pro-

vides excellent transient response and fast turn-on

ability. The LDO regulator output has been specif-

ically optimized to function with low-cost, low-ESR

ceramic capacitors. However, the design will allow

for operation over a wide range of capacitor types.

The AAT3237 has an integrated Power-OK com-

parator which indicates when the output is out of

regulation.

The device enable circuit is provided to shut down

the LDO regulator for power conservation in portable

products. The enable circuit has an additional out-

put capacitor discharge circuit to assure sharp appli-

cation circuit turn-off upon device shutdown.

This LDO regulator has complete short-circuit and

thermal protection.

The integral combination of

these two internal protection circuits gives the

AAT3237 a comprehensive safety system during

extreme adverse operating conditions.

Device

power dissipation is limited to the package type

and thermal dissipation properties.

Refer to the

Thermal Considerations section of this datasheet

for details on device operation at maximum output

current loads.

Functional Block Diagram

Over-Current

Protection

Voltage

Reference

94%

Error

Amplifier

Over-Temperature

Protection

IN

POK

EN

GND

OUT

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AAT3237IJS-2.3-T1 Datasheet(PDF) 8 Page - Advanced Analogic Technologies

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