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参数资料
| 型号： | MAX6876ETX+ |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | EEPROM-Programmable, Quad, Power-Supply Tracker/Sequencer Circuit |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC36 |
| 封装： | 6 X 6 MM, 0.80 MM HEIGHT, MO-220WJJD-1, TQFN-36 |
| 文件页数： | 16/39页 |
| 文件大小： | 425K |
| 代理商： | MAX6876ETX+ |
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MAX6876
EEPROM-Programmable, Quad,
Power-Supply Tracker/Sequencer Circuit
______________________________________________________________________________________
23
Bus Removal Output (REM)
The MAX6876 features an open-drain bus removal
(REM) output. REM signals when it is safe to remove
the card after a controlled track/sequence power-down
operation. To initiate a power-down, drive ENABLE low
or send an I2C power-down command. REM monitors
OUT_ and when any of the OUT_ voltages are above
the VTH_PL threshold, REM stays low. When all OUT_
outputs are below VTH_PL, REM goes high impedance.
Connect REM to an external pullup resistor/LED chain
to visually signal when it is safe to remove a powered
board from the bus.
In tracking mode when REM is used in master/slave
operations, connect all REM pins together. The com-
mon REM connection remains low if any OUT_ supply
is above the VTH_PL threshold.
Overcurrent Output (OC)
The open-drain, active-low OC output asserts low if an
overcurrent condition is detected in any selected channel
for longer than tOC. Overcurrent conditions are deter-
mined as a differential voltage between IN_ and OUT_.
OC monitoring begins only after supply tracking or
sequencing has been completed and is disabled during
power-down operation (Table 12).
Reset Output (RESET)
The reset output, RESET, is an open-drain output that
monitors the selected OUT_ voltages. The selected
OUT_ voltages must exceed their selected PG_ thresh-
olds for the selected reset timeout period (tRP) before
RESET is deasserted. A manual reset input (MR) can
assert RESET. RESET remains low while MR is low.
RESET remains low for the selected reset timeout peri-
od (tRP) after MR transitions from low to high (Table 13).
Synchronization Hold Output (HOLD)
The MAX6876 features an open-drain, active-low syn-
chronization alert output/input. HOLD communicates
synchronization status between master/slave devices in
multiple MAX6876 applications. When a slave device
detects a tracking problem with respect to the master
SYNCH signal, the slave asserts HOLD low. When
tracking is back under control, the slave’s HOLD is
deasserted and goes high again. The HOLD output
remains asserted while selected tracking IN_ inputs are
below their selected thresholds (the slave device can
delay a tracking start until its inputs are at their required
stable voltage levels) or held low by the master when it
is counting the autoretry time after a detected fault con-
dition. Connect HOLD pins only to other MAX6876
HOLD pins.
REGISTER
ADDRESS
EEPROM MEMORY
ADDRESS
BIT RANGE
DESCRIPTION
“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%
[7:6]
“11” IN4 to OUT4 power-good threshold = 87.5%
“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%
“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%
“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%
10h
30h
[5:0]
“11” IN1 to OUT1 power-good threshold = 87.5%
Table 11. PG Threshold Settings
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6876ETX+ | 功能描述:监控电路 EEPROM-Prog Quad Power-Sup Sequencer RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6876ETX+T | 功能描述:监控电路 EEPROM-Prog Quad Power-Sup Sequencer RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6876ETX-T | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6876EVCMOD2 | 功能描述:监控电路 Programmers, Development Systems RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6876EVKIT | 功能描述:监控电路 Programmers, Development Systems RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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