EVAL-ADM1176EBZ【PDF 2/24 页】BOARD EVALUATION FOR ADM1176

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ADM1176

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

REVISION HISTORY

5/12—Rev. B to Rev. C

Added V BUS = 3.0 V to 5.5 V Condition to V IL and V IH , 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 V VCC to V CC Throughout ................................................. 3

Changes to Input Current for 00 Decode, I ADRLOW , Parameter ... 3

Changes to Input Current for 11 Decode, I ADRHIGH , Parameter... 3

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

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

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

Data Sheet

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 I 2 C Bus ............................... 16

General I 2 C 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

4/07—Rev. 0 to Rev. A

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

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 I 2 C 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

Rev. C | Page 2 of 24

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