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Fabricante

AAT1109A

ONE-CHANNEL BOOST SWITCHING REGULATOR

Advanced Analogic Technologies 

Advanced Analog Technology, Inc.

Preliminary and Provisional

AAT1109A

ONE-CHANNEL BOOST SWITCHING REGULATOR

Features

z Under-voltage lockout protection

z Totem pole output

z Output short circuit protection

z Incorporates soft start function

z Wide operating frequency：

10kHz to 1MHz

z Shut down control

z Low dissipation current :

Typical 1.6mA in operation

z Sop-8 & Tssop-8 package available

Pin Configuration

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General Description

The AAT1109A is a one-channel switching

regulator control IC incorporating a soft start

function and a short circuit protection function.

Each device consists of an on-chip voltage reference,

error amplifier, pulse width modulation controller,

under-voltage protection, soft start and short circuit

protection circuits. Switching frequencies up to

1MHz are set by an external resistor and capacitor.

Soft-start time can be implemented by the SCP

capacitor.

Additionally, a chip enable feature is provided to

power down reducing the supply current to 10uA.

With a minimum number of external components,

the AAT1109A offers a simple and cost effective

solution.

-IN

1

SCP 2

Vcc

3

CE

4

8

FB

7

OSC

6

GND

5

OUT

(SOP-8 PACKAGE)

(TSSOP-8 PACKAGE)

– 台灣類比科技股份有限公司 –

–

Advanced Analog Technology, Inc. –

V 0.1

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