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DS8088A-01 August 2017

www.richtek.com

RT8088A

©

Copyright

2017 Richtek Technology Corporation. All rights reserved.

is a registered trademark of Richtek Technology Corporation.

Function Block Diagram

Functional Pin Description

Pin No.

Pin Name

Pin Function

A1, B1, C1

PVIN

Input Supply Voltage, 2.5V to 5.5V.

A2, B2

LX

Switch Node. The Source of the internal high-side power MOSFET, and Drain of

the internal low-side (synchronous) rectifier MOSFET.

A3, B3, C2, C3 PGND

Power Ground.

D1

AVIN

Analog Circuit Input Supply Voltage.

D2

EN

Enable Control Input. Pull high to enable.

D3

SDA

I

2

C Data Signal.

E1

AGND

Analog Ground Should be Electrically Connected to GND Close to the Device.

E2

SCL

I

2

C Clock Signal.

E3

FB

Feedback Voltage Input.

PVIN

AGND

PGND

EN

+

-

VREF

Shutdown

Control

LX

FB

SDA

Driver

TON

Logic

Control

LX

Current

Limit

Detector

Current

Sense

LX

AZC

LX

Comparator

+

-

RC

CCOMP

I

2

C Control

+

AVIN

Error Amplifier

UVLO

OTP

SCL

0.8V