AOZ1020 Просмотр технического описания (PDF) - Alpha and Omega Semiconductor

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Компоненты Описание

производитель

AOZ1020

EZBuck™ 2A Synchronous Buck Regulator

Alpha and Omega Semiconductor 

Block Diagram

AOZ1020

VIN

EN

UVLO

5V LDO

Internal

OTP

& POR

Regulator

+5V

Reference

& Bias

Softstart

0.8V

FB

+

EAmp

–

COMP

PGOOD

0.2V

Frequency

Foldback

+ Comparator

–

0.72V +

–

+

– PWM

Comp

+

ILimit

PWM

Control

Logic

Oscillator

+

ISen

–

Level

Shifter

+

FET

Driver

AGND

Q1

LX

Q2

PGND

Absolute Maximum Ratings

Exceeding the Absolute Maximum Ratings may damage the device.

Parameter

Rating

Supply Voltage (VIN)

LX to AGND

EN to AGND

FB to AGND

COMP to AGND

PGND to AGND

PGOOD to AGND

Junction Temperature (TJ)

Storage Temperature (TS)

ESD Ratingl(1)

18V

-0.7V to VIN+0.3V

-0.3V to VIN+0.3V

-0.3V to 6V

-0.3V to 6V

-0.3V to 0.3V

-0.3V to 6.0V

+150°C

-65°C to +150°C

2.0kV

Note:

1. Devices are inherently ESD sensitive, handling precautions are

required. Human body model rating: 1.5kΩ in series with 100pF.

Recommended Operating Conditions

The device is not guaranteed to operate beyond the Recom-

mended Operating Conditions.

Parameter

Rating

Supply Voltage (VIN)

Output Voltage Range

Ambient Temperature (TA)

Package Thermal Resistance (ΘJA)(2)

SO-8

4.5V to 16V

0.8V to VIN

-40°C to +85°C

87°C/W

Package Thermal Resistance (ΘJC)

SO-8

30°C/W

Package Power Dissipation (PD)

@25°C Ambient

SO-8

1.15W

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.

Rev. 1.5 December 2010

www.aosmd.com

Page 3 of 15

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