ADM1176-2ARMZ-R7 데이터 시트보기 (PDF) - Analog Devices

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ADM1176-2ARMZ-R7

Hot Swap Controller and I2C Power Monitor

Analog Devices 

ADM1176

Data Sheet

TABLE OF CONTENTS

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

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

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

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

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

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

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

Thermal Characteristics .............................................................. 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 Function ............................................................................... 13

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

GATE and TIMER Functions During a Hot Swap

Operation..................................................................................... 14

Calculating Current Limits and Fault Current Limit Time.. 14

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

Hot Swap Retry on the ADM1176-1 ....................................... 15

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

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

Identifying the ADM1176 on the I2C Bus............................... 16

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

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

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

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

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

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

Applications Information .............................................................. 22

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

Kelvin Sense Resistor Connection ........................................... 22

Outline Dimensions ....................................................................... 23

Ordering Guide .......................................................................... 23

REVISION HISTORY

5/12—Rev. B to Rev. C

4/07—Rev. 0 to Rev. A

Added VBUS = 3.0 V to 5.5 V Condition to VIL and VIH, Table 1.....4

Changes to Kelvin Sense Resistor Connection Section ............. 22

Deleted Figure 46............................................................................ 23

Updated Outline Dimensions ....................................................... 23

2/08—Rev. A to Rev. B

Changed VVCC to VCC Throughout ................................................. 3

Changes to Input Current for 00 Decode, IADRLOW, Parameter ... 3

Changes to Input Current for 11 Decode, IADRHIGH, Parameter... 3

Added ADC Conversion Time Parameter .................................... 5

Added Fast Overcurrent Response Time Parameter ................... 5

Added Endnote 2 and Endnote 3 ................................................... 5

Change to Figure 14 ......................................................................... 9

Changes to Figure 15 Caption......................................................... 9

Changes to Figure 24...................................................................... 11

Changes to TIMER Function Section.......................................... 13

Changes to General I2C Timing Section, Step 3 ......................... 16

Changes to Table 5.......................................................................... 16

Changes to Figure 32 and Figure 33............................................. 17

Changes to Quick Command Section ......................................... 18

Changes to Figure 35...................................................................... 18

Changes to Table 7.......................................................................... 18

Changes to Write Extended Command Byte Section................ 19

Changes to Figure 37...................................................................... 19

Changes to Table 9 and Table 11................................................... 19

Changes to Converting ADC Codes to Voltage and

Current Readings Section......................................................... 20

Changes to GATE and TIMER Functions During

a Hot Swap Section......................................................................... 14

Changes to Calculating Current Limits and

Fault Current Limit Time Section ................................................ 14

Changes to Initial Timing Cycle Section..................................... 14

Changes to Table 5.......................................................................... 16

Changes to Figure 32 and Figure 33............................................. 17

Changes to Figure 37...................................................................... 19

Changes to Figure 39 and Figure 40............................................. 20

Added Applications Information Heading ................................. 22

9/06—Revision 0: Initial Version

Rev. C | Page 2 of 24

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