Datasheet

ADM1069
Rev. C | Page 2 of 32
TABLE OF CONTENTS
Features .............................................................................................. 1
Functional Block Diagram .............................................................. 1
Applications....................................................................................... 1
General Description......................................................................... 1
Revision History ............................................................................... 2
Detailed Block Diagram .................................................................. 3
Specifications..................................................................................... 4
Absolute Maximum Ratings............................................................ 7
Thermal Resistance ...................................................................... 7
ESD Caution.................................................................................. 7
Pin Configurations and Function Descriptions ........................... 8
Typical Performance Characteristics ........................................... 10
Powering the ADM1069................................................................ 13
Inputs................................................................................................ 14
Supply Supervision..................................................................... 14
Programming the Supply Fault Detectors............................... 14
Input Comparator Hysteresis.................................................... 14
Input Glitch Filtering ................................................................. 15
Supply Supervision with VXx Inputs....................................... 15
VXx Pins as Digital Inputs ........................................................ 15
Outputs ............................................................................................ 16
Supply Sequencing Through Configurable Output Drivers. 16
Default Output Configuration.................................................. 16
Sequencing Engine ......................................................................... 17
Overview...................................................................................... 17
Warnings...................................................................................... 17
SMBus Jump (Unconditional Jump)........................................ 17
Sequencing Engine Application Example............................... 18
Fault and Status Reporting........................................................ 19
Voltage Readback............................................................................ 20
Supply Supervision with the ADC ........................................... 20
Supply Margining ........................................................................... 21
Overview ..................................................................................... 21
Open-Loop Supply Margining ................................................. 21
Closed-Loop Supply Margining ............................................... 21
Writing to the DACs .................................................................. 22
Choosing the Size of the Attenuation Resistor....................... 22
DAC Limiting and Other Safety Features ............................... 22
Applications Diagram.................................................................... 23
Communicating with the ADM1069........................................... 24
Configuration Download at Power-Up................................... 24
Updating the Configuration ..................................................... 24
Updating the Sequencing Engine............................................. 25
Internal Registers........................................................................ 25
EEPROM ..................................................................................... 25
Serial Bus Interface..................................................................... 25
SMBus Protocols for RAM and EEPROM.............................. 28
Write Operations........................................................................ 28
Read Operations......................................................................... 30
Outline Dimensions ....................................................................... 31
Ordering Guide .......................................................................... 31
REVISION HISTORY
6/11—Rev. B to Rev. C
Change to Serial Bus Timing Parameter in Table 1 ..................... 4
Changes to Ordering Guide .......................................................... 31
8/08—Rev. A to Rev. B
Added 40-Lead LFCSP.......................................................Universal
Changes to Table 1............................................................................ 4
Moved Absolute Maximum Ratings Section, Changes to Table 3... 7
Added Figure 4, Renumbered Sequentially; Changes to Table 4..... 8
Changes to Powering the ADM1069 Section ............................. 13
Changes to Default Output Configuration Section ................... 16
Changes to Sequence Detector Section ....................................... 18
Changes to Figure 32...................................................................... 21
Changes to Configuration Download at Power-Up Section..... 24
Changes to Table 11........................................................................ 25
Changes to Figure 45 and Error Correction Section ................. 30
Updated Outline Dimensions....................................................... 31
Changes to Ordering Guide.......................................................... 31
10/06—Rev. 0 to Rev. A
Changes to Features ..........................................................................1
Changes to Figure 2...........................................................................3
Changes to Table 1.............................................................................4
Changes to Table 2.............................................................................7
Changes to Table 3.............................................................................8
Inserted Table 4; Renumbered Sequentially ..................................8
Changes to Programming the Supply Fault Detectors Section ..... 13
Changes to Outputs Section.......................................................... 16
Changes to Fault Reporting Section ............................................ 21
Changes to Table 9.......................................................................... 22
Inserted Table 11............................................................................. 28
Changes to Ordering Guide.......................................................... 33
3/05—Revision 0: Initial Version