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| 型号： | MAX6876ETX+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 23/39页 |
| 文件大小： | 0K |
| 描述： | IC TRACKER/SUPERVISOR MON 36TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 类型： | 序列发生器 |
| 监视电压数目： | 4 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 可调节/可选择 |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 36-WFQFN 裸露焊盘 |
| 供应商设备封装： | 36-TQFN 裸露焊盘（6x6） |
| 包装： | 管件 |
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EEPROM-Programmable, Quad,
Power-Supply Tracker/Sequencer Circuit
Table 11. PG Threshold Settings
REGISTER
ADDRESS
EEPROM MEMORY
ADDRESS
BIT RANGE
DESCRIPTION
“ 00 ” IN4 to OUT4 power-good threshold = 95%
[7:6]
“ 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%
“ 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%
10h
30h
[5:0]
“ 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%
“ 11 ” IN1 to OUT1 power-good threshold = 87.5%
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 I 2 C power-down command. REM monitors
OUT_ and when any of the OUT_ voltages are above
the V TH_PL threshold, REM stays low. When all OUT_
outputs are below V TH_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 V TH_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 t OC . 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 (t RP ) 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 (t RP ) 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.
______________________________________________________________________________________
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相关代理商/技术参数 |
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|---|---|
| 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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