ADM1175

Rev. 0 | Page 2 of 24

TABLE OF CONTENTS

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

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

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

Functional Block Diagram .............................................................. 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Absolute Maximum Ratings............................................................ 6

ESD Caution.................................................................................. 6

Pin Configuration and Function Descriptions............................. 7

Typical Performance Characteristics ............................................. 8

Overview of the Hot Swap Function............................................ 13

Undervoltage Lockout ............................................................... 13

ON/ONB Function..................................................................... 13

TIMER Function ........................................................................ 13

GATE and TIMER Functions During a Hot Swap ................ 14

Calculating Current Limits and Fault Current Limit Time .. 14

Initial Timing Cycle ................................................................... 14

Hot Swap Retry Cycle on the ADM1175-1 and the

ADM1175-3 ................................................................................ 15

Voltage and Current Readback ..................................................... 16

Serial Bus Interface..................................................................... 16

Identifying the ADM1175 on the I2C Bus............................... 16

General I2C Timing.................................................................... 16

Write and Read Operations ...................................................... 18

Quick Command........................................................................ 18

Write Command Byte ................................................................ 18

Write Extended Byte .................................................................. 19

Read Voltage and/or Current Data Bytes ................................ 20

Applications Waveforms................................................................ 22

Kelvin Sense Resistor Connection ........................................... 23

Outline Dimensions ....................................................................... 24

Ordering Guide .......................................................................... 24

REVISION HISTORY

9/06—Revision 0: Initial Version