ADM1178 Analog Devices, ADM1178 Datasheet - Page 2

• Manufacturer Part Number: ADM1178
• Description: Hot Swap Controller and Digital Power Monitor with ALERTB Output
• Manufacturer: Analog Devices

Specifications of ADM1178

• Operating Range(v): 3.15 to 16.5
• Uv & Ov Detection: ON pin (UV)
• Digital V & I Readback: I2C Interface,w/ 4 Addreses
• I Monitor Accuracy (+/-%): 2%
• Other Outputs: ALERTB
• Package: 10-Lead MSOP

ADM1178
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 6
Pin Configuration and Function Descriptions ............................. 7
Typical Performance Characteristics ............................................. 8
Overview of the Hot Swap Function ............................................ 13
REVISION HISTORY
5/09—Rev. B to Rev. C
Changes to Figure 1 .......................................................................... 1
2/08—Rev. A to Rev. B
Changed V
Changes to Input Current for 11 Decode, I
Changes to Input Current for 00 Decode, I
Added ADC Conversion Time Parameter .................................... 5
Added Fast Overcurrent Response Time Parameter ................... 5
Added Endnote 2 and Endnote 3 ................................................... 5
Changes 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
Changes to Table 5 .......................................................................... 16
Changes to Quick Command Section ......................................... 18
Changes to Figure 38 ...................................................................... 18
Changes to Table 7 .......................................................................... 18
Changes to Write Extended Command Byte Section ................ 19
Changes to Figure 40 ...................................................................... 19
Changes to Table 9 and Table 11 ................................................... 19
Changes to Converting ADC Codes to Voltage and
Thermal Characteristics .............................................................. 6
ESD Caution .................................................................................. 6
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
Current Readings Section ......................................................... 20
VCC
to V
CC
2
Throughout ................................................. 3
C Timing Section, Step 3 ......................... 16
ADRHIGH
ADRLOW
, Parameter ... 3
, Parameter ... 3
Rev. C | Page 2 of 24
Voltage and Current Readback ..................................................... 16
Write and Read Operations ........................................................... 18
Applications Information .............................................................. 22
Outline Dimensions ....................................................................... 24
4/07—Rev. 0 to Rev. A
Changes to Table 1 ............................................................................. 3
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 ..................................... 15
Changes to Table 5 .......................................................................... 16
Changes to Figure 35 and Figure 36............................................. 17
Changes to Figure 40 ...................................................................... 19
Changes to Figure 42 and Figure 43............................................. 20
Added Applications Information Heading ................................. 22
9/06—Revision 0: Initial Version
Initial Timing Cycle ................................................................... 14
Hot Swap Retry Cycle on the ADM1178-1 ............................. 15
Serial Bus Interface ..................................................................... 16
Identifying the ADM1178 on the I
General I
Quick Command ........................................................................ 18
Write Command Byte ................................................................ 18
Write Extended Command Byte .............................................. 19
Read Voltage and/or Current Data Bytes ................................ 20
Applications Waveforms ............................................................ 22
ALERTB Output ......................................................................... 23
Kelvin Sense Resistor Connection ........................................... 23
Ordering Guide .......................................................................... 24
2
C Timing .................................................................... 16
2
C Bus ............................... 16