AOZ1081AI datasheet(4/16 Pages) AOSMD

4 / 16 page

AOZ1081

Rev. 1.1 April 2009

www.aosmd.com

Page 4 of 16

Block Diagram

Absolute Maximum Ratings

Exceeding the Absolute Maximum Ratings may damage the

device.

Note:

1. Devices are inherently ESD sensitive, handling precautions are required.

Human body model rating: 1.5k

Ω in series with 100pF.

Recommend Operating Ratings

The device is not guaranteed to operate beyond the Maximum

Operating Ratings.

Note:

2. The value of

ΘJA is measured with the device mounted on 1-in2

FR-4 board with 2oz. Copper, in a still air environment with TA =

25°C. The value in any given application depends on the user's spe-

cific board design.

1000kHz / 76kHz

Oscillator

Frequency

Foldback

Comparator

AGND

PGND

VIN

COMP

OTP

Internal

+5V

ILimit

PWM

Control

Logic

5V LDO

Regulator

UVLO

& POR

Softstart

Reference

& Bias

0.25V

0.33V

0.15V

PWM

Comp

Level

Shifter

FET

Driver

ISen

EAmp

–

Over Voltage

Protection

Comparator

–

Parameter

Rating

Supply Voltage (VIN)

18V

LX to AGND

-0.7V to VIN+0.3V

EN to AGND

-0.3V to VIN+0.3V

FB to AGND

-0.3V to 6V

COMP to AGND

-0.3V to 6V

PGND to AGND

-0.3V to +0.3V

Junction Temperature (TJ)

+150°C

Storage Temperature (TS)

-65°C to +150°C

ESD Rating(1)

2kV

Parameter

Rating

Supply Voltage (VIN)

4.5V to 16V

Output Voltage Range

0.25V to VIN

Ambient Temperature (TA)

-40°C to +85°C

Package Thermal Resistance SO-8

(

ΘJA)(2)

87°C/W

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