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MAX6876ETX+T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39
MAX6876
EEPROM-Programmable, Quad,
Power-Supply Tracker/Sequencer Circuit
34 ______________________________________________________________________________________
REGISTER
ADDRESS
EEPROM MEMORY
ADDRESS
READ/WRITE
DESCRIPTION
Bit [7:6] “00” fault power-up timer value = 25ms
“01” fault power-up timer value = 50ms
“10” fault power-up timer value = 100ms
“11” fault power-up timer value = 200ms
Bit [5:4] “00” fault power-down timer value = 25ms
“01” fault power-down timer value = 50ms
“10” fault power-down timer value = 100ms
“11” fault power-down timer value = 200ms
Bit 3—Reserved (write 0’s for EEPROM writes)
Bit 2—Reserved (write 0’s for EEPROM writes)
Bit 1—Reserved (write 0’s for EEPROM writes)
0Ah 2Ah R/W
Bit 0—Reserved (write 0’s for EEPROM writes)
Bit 7—If 1, OUT4 on ramp 2
Bit 6—If 1, OUT3 on ramp 2
Bit 5—If 1, OUT2 on ramp 2
Bit 4—If 1, OUT1 on ramp 2
Bit 3—If 1, OUT4 on ramp 1
Bit 2—If 1, OUT3 on ramp 1
Bit 1—If 1, OUT2 on ramp 1
0Bh 2Bh R/W
Bit 0—If 1, OUT1 on ramp 1
Bit 7—If 1, OUT4 on ramp 4
Bit 6—If 1, OUT3 on ramp 4
Bit 5—If 1, OUT2 on ramp 4
Bit 4—If 1, OUT1 on ramp 4
Bit 3—If 1, OUT4 on ramp 3
Bit 2—If 1, OUT3 on ramp 3
Bit 1—If 1, OUT2 on ramp 3
0Ch 2Ch R/W
Bit 0—If 1, OUT1 on ramp 3
Bit [7:6] “00” IN4 to OUT4 overcurrent threshold = 97.5%
“01” IN4 to OUT4 overcurrent threshold = 95%
“10” IN4 to OUT4 overcurrent threshold = 92.5%
“11” IN4 to OUT4 overcurrent threshold = 90%
Bit [5:4] “00” IN3 to OUT3 overcurrent threshold = 97.5%
“01” IN3 to OUT3 overcurrent threshold = 95%
“10” IN3 to OUT3 overcurrent threshold = 92.5%
“11” IN3 to OUT3 overcurrent threshold = 90%
Bit [3:2] “00” IN2 to OUT2 overcurrent threshold = 97.5%
“01” IN2 to OUT2 overcurrent threshold = 95%
“10” IN2 to OUT2 overcurrent threshold = 92.5%
“11” IN2 to OUT2 overcurrent threshold = 90%
0Dh 2Dh R/W
Bit [1:0] “00” IN1 to OUT1 overcurrent threshold = 97.5%
“01” IN1 to OUT1 overcurrent threshold = 95%
“10” IN1 to OUT1 overcurrent threshold = 92.5%
“11” IN1 to OUT1 overcurrent threshold = 90%
Table 16. Register Map (continued)
MAX6876
EEPROM-Programmable, Quad,
Power-Supply Tracker/Sequencer Circuit
______________________________________________________________________________________ 35
REGISTER
ADDRESS
EEPROM MEMORY
ADDRESS
READ/WRITE
DESCRIPTION
Bit [7:6] “00” overcurrent timer value = 12.5ms
“01” overcurrent timer value = 50ms
“10” overcurrent timer value = 100ms
“11” overcurrent timer value = 200ms
Bit 5—If 1, overcurrent monitoring on OUT1 is enabled
If 0, no overcurrent monitoring on OUT1
Bit 4—If 1, overcurrent monitoring on OUT2 is enabled
If 0, no overcurrent monitoring on OUT2
Bit 3—If 1, overcurrent monitoring on OUT3 is enabled
If 0, no overcurrent monitoring on OUT3
Bit 2—If 1, overcurrent monitoring on OUT4 is enabled
If 0, no overcurrent monitoring on OUT4
0Eh 2Eh R/W
Bit [1:0] Not used
Bit [7:5] “000” gate1-delay timer value = 25µs
“001” gate1-delay timer value = 12.5ms
“010” gate1-delay timer value = 25.0ms
“011” gate1-delay timer value = 50.0ms
“100” gate1-delay timer value = 100.0ms
“101” gate1-delay timer value = 200.0ms
“110” gate1-delay timer value = 400.0ms
“111” gate1-delay timer value = 1600.0ms
Bit 4—Not used
Bit 3—OC1 overcurrent fault (read only for register address). If 1, OC1 is
overcurrent. If 0, OC1 is not overcurrent.
Bit 2—OC2 overcurrent fault (read only for register address). If 1, OC2 is
overcurrent. If 0, OC2 is not overcurrent.
Bit 1—OC3 overcurrent fault (read only for register address). If 1, OC3 is
overcurrent. If 0, OC3 is not overcurrent.
0Fh 2Fh R/W
Bit 0—OC4 overcurrent fault (read only for register address). If 1, OC4 is
overcurrent. If 0, OC4 is not overcurrent.
Bit [7:6] “00” IN4 to OUT4 power-good threshold = 95%
“01” IN4 to OUT4 power-good threshold = 92.5%
“10” IN4 to OUT4 power-good threshold = 90%
“11” IN4 to OUT4 power-good threshold = 87.5%
Bit [5:4] “00” IN3 to OUT3 power-good threshold = 95%
“01” IN3 to OUT3 power-good threshold = 92.5%
“10” IN3 to OUT3 power-good threshold = 90%
“11” IN3 to OUT3 power-good threshold = 87.5%
Bit [3:2] “00” IN2 to OUT2 power-good threshold = 95%
“01” IN2 to OUT2 power-good threshold = 92.5%
“10” IN2 to OUT2 power-good threshold = 90%
“11” IN2 to OUT2 power-good threshold = 87.5%
10h 30h R/W
Bit [1:0] “00” IN1 to OUT1 power-good threshold = 95%
“01” IN1 to OUT1 power-good threshold = 92.5%
“10” IN1 to OUT1 power-good threshold = 90%
“11” IN1 to OUT1 power-good threshold = 87.5%
Table 16. Register Map (continued)
MAX6876
EEPROM-Programmable, Quad,
Power-Supply Tracker/Sequencer Circuit
36 ______________________________________________________________________________________
REGISTER
ADDRESS
EEPROM MEMORY
ADDRESS
READ/WRITE
DESCRIPTION
Bit 7—If 1, OUT1 also controls RESET
If 0, OUT1 does not control RESET
Bit 6—If 1, OUT2 also controls RESET
If 0, OUT2 does not control RESET
Bit 5—If 1, OUT3 also controls RESET
If 0, OUT3 does not control RESET
Bit 4—If 1, OUT4 also controls RESET
If 0, OUT4 does not control RESET
Bit [3:1] “000” reset timer value = 25µs
“001” reset timer value = 12.5ms
“010” reset timer value = 25.0ms
“011” reset timer value = 50.0ms
“100” reset timer value = 100.0ms
“101” reset timer value = 200.0ms
“110” reset timer value = 400.0ms
“111” reset timer value = 1600.0ms
11h 31h R/W
Bit 0. If 1, selects external reference, if 0 internal reference selected
Bit [7:6] “00” track/sequence slew rate (rise or fall) = 800V/s
“01” track/sequence slew rate (rise or fall) = 400V/s
“10” track/sequence slew rate (rise or fall) = 200V/s
“11” track/sequence slew rate (rise or fall) = 100V/s
Bit [5:3] Not used
Bit 2—Reserved (write 0’s for EEPROM writes)
Bit 1—Reserved (write 0’s for EEPROM writes)
12h 32h R/W
Bit 0—Reserved (write 0’s for EEPROM writes)
Bit 7—If 1, reverse order of track/sequence power-down
If 0, GATE_ fast pulldown
Bit 6—If 1, OUT1 pulldown with 100Ω
If 0, OUT1 100Ω pulldown disabled
Bit 5—If 1, it is possible to discharge OUT2 with a pulldown
If 0, no pulldown is allowed
Bit 4—If 1, it is possible to discharge OUT3 with a pulldown
If 0, no pulldown is allowed
Bit 3—If 1, it is possible to discharge OUT4 with a pulldown
If 0, no pulldown is allowed
Bit 2—If 1, configuration registers are locked
If 0, configuration registers unlocked
13h 33h R/W
Bit [1:0] not used
14h 34h — Reserved. Should not be overwritten.
15h 35h — Reserved. Should not be overwritten.
16h 36h — Reserved. Should not be overwritten.
Table 16. Register Map (continued)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39

MAX6876ETX+T

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Buy MAX6876ETX+T
Manufacturer:
Maxim Integrated
Description:
Supervisory Circuits EEPROM-Prog Quad Power-Sup Sequence
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New from this manufacturer.
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