HUSB251

Data Sheet

©2023 Hynetek Semiconductor Co., Ltd. All rights reserved.

Page 2 of 21

TABLE OF CONTENTS

Features ............................................................................................................................................................................1

Applications .......................................................................................................................................................................1

General Description ..........................................................................................................................................................1

Typical Application Circuit .................................................................................................................................................1

Table of Contents ..............................................................................................................................................................2

Revision History ................................................................................................................................................................3

Pin Configuration and Function Descriptions ....................................................................................................................4

Recommended Operating Conditions ...............................................................................................................................6

Specifications ....................................................................................................................................................................6

Absolute Maximum Ratings ........................................................................................................................................... 10

Thermal Resistance .................................................................................................................................................... 10

ESD Caution ............................................................................................................................................................... 10

Functional Block Diagram ...............................................................................................................................................11

Theory of Operation ....................................................................................................................................................... 12

MCU ............................................................................................................................................................................ 12

VIN Pin ........................................................................................................................................................................ 12

VDD Pin ...................................................................................................................................................................... 12

Control Loop Compensation Circuit (VFB, CS+, CS−, IFB, OPTO Pins) ................................................................... 12

CC1 and CC2 Pins...................................................................................................................................................... 12

VBUS Pin .................................................................................................................................................................... 13

GATE Pin .................................................................................................................................................................... 13

Over Voltage Protection .............................................................................................................................................. 13

Over Current Protection .............................................................................................................................................. 13

Short Circuit Protection ............................................................................................................................................... 13

Over Temperature Protection...................................................................................................................................... 13

Thermal Shut Down .................................................................................................................................................... 14

Analog-Digital Converter............................................................................................................................................. 14

GPIO ........................................................................................................................................................................... 14

I2C FUNCTION............................................................................................................................................................ 15

Sleep Mode ................................................................................................................................................................. 15

Typical Application Circuits............................................................................................................................................. 16

Package Outline Dimensions ......................................................................................................................................... 17

Package Top Marking..................................................................................................................................................... 18

Ordering Guide............................................................................................................................................................... 19

Tape and Reel Information ............................................................................................................................................. 20

Important Notice ............................................................................................................................................................. 21