ADM1041
TABLE OF CONTENTS
Specifications..................................................................................... 6
Pulse............................................................................................. 27
ACSENSE.......................................................................................... 27
OrFET Gate Drive...................................................................... 28
Oscillator and Timing Generators ............................................... 30
Logic I/O and Monitor Pins...................................................... 30
SMBus Serial Port....................................................................... 33
Microprocessor Support............................................................ 33
Broadcasting................................................................................ 34
SMBus Serial Interface............................................................... 34
General SMBus Timing............................................................. 34
SMBus Protocols for RAM and EEPROM.............................. 36
SMBus Read Operations ........................................................... 38
SMBus Alert Response Address (ARA)................................... 39
Support for SMBus 1.1............................................................... 39
Layout Considerations............................................................... 39
Power-Up Auto-Configuration ................................................ 39
Extended SMBus Addressing.................................................... 40
Backdoor Access......................................................................... 40
Register Listing ............................................................................... 41
Detailed Register Descriptions ..................................................... 42
Manufacturing Data................................................................... 51
Microprocessor Support................................................................ 52
Trim Table........................................................................................ 54
Appendix A—Configuration Table .............................................. 55
Appendix B—Test Name Table..................................................... 61
Outline Dimensions....................................................................... 64
Ordering Guide .......................................................................... 64
REVISION HISTORY
Absolute Maximum Ratings.......................................................... 13
ESD Caution................................................................................ 13
Pin Configuration and Function Descriptions........................... 14
Terminology .................................................................................... 17
Theory of Operation ...................................................................... 19
Power Management.................................................................... 19
Gain Trimming and Configuration ......................................... 19
Differential Remote SenseAmplifier............................................ 20
Set Load Voltage.......................................................................... 20
Load Overvoltage (OV)............................................................. 20
Local Voltage Sense .................................................................... 20
Local OverVoltage Protection (OVP)...................................... 20
Local UnderVoltage Protection (UVP) ................................... 20
False UV Clamp.......................................................................... 20
Voltage Error Amplifier............................................................. 21
Main Voltage Reference ............................................................. 21
Current Sense Amplifier............................................................ 21
Current Sensing .......................................................................... 22
Current Transformer Input....................................................... 22
Current Sense Calibration......................................................... 22
Current Limit Error Amplifier.................................................. 22
Overcurrent Protection ............................................................. 22
Current Share .................................................................................. 24
Current Share Offset .................................................................. 24
ISHARE Drive Amplifier................................................................. 24
Differential Sense Amplifier...................................................... 24
ISHARE Error Amplifier................................................................. 24
ISHARE Clamp................................................................................. 24
Share_ok Detector...................................................................... 24
Pulse/ACSENSE2................................................................................. 27
3/04-Revision Sp0: Initial Version
5/04-Changed from Rev. Sp0 to Rev. A
Rev. A | Page 2 of 64
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