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参数资料
型号： MAX6887NETE+
厂商： MAXIM INTEGRATED PRODUCTS INC
元件分类： 电源管理
英文描述： Hex/Quad, Power-Supply Supervisory Circuits
中文描述： 6-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC16
封装： 5 X 5 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, MO-220WHHB, TQFN-16
文件页数： 13/13页
文件大小： 132K
代理商： MAX6887NETE+
existing state while system-level testing occurs. Leave
MARGIN unconnected or connect to BP if unused. An
internal 10A current source pulls MARGIN to BP.
MARGIN overrides MR if both are asserted at the
same time. The state of RESET, OV, and WDO does not
change while MARGIN = GND.
RESET, OV, and WDO Outputs
The MAX6887/MAX6888 feature three active-low open-
drain outputs: RESET, OV, and WDO. After power-up or
overvoltage/undervoltage conditions, RESET and OV
remain in their active states until their timeout periods
expire and no undervoltage/overvoltage conditions are
present (see Figure 2).
OV asserts when any monitored input is above its over-
voltage threshold and remains asserted until all inputs
are below their thresholds and its respective 25s time-
out period expires. Connect OV to MR to bring RESET
low during an overvoltage condition. OV requires a
pullup resistor (unless connected to MR).
RESET asserts when any monitored input is below its
undervoltage threshold or MR is asserted. RESET
remains asserted for 200ms after all assertion-causing
conditions have been cleared. Configure RESET to
assert when the watchdog timer expires by connecting
WDO to MR. RESET requires a pullup resistor.
WDO asserts when the watchdog timer expires. See
the
Configuring the Watchdog Timer section for a com-
plete description. WDO requires a pullup resistor.
Configuring the Watchdog Timer
A watchdog timer monitors microprocessor (P) soft-
ware execution for a stalled condition and resets the P
if it stalls. Connect the watchdog timer output WDO to
the reset input or a nonmaskable interrupt of the P.
The watchdog timer features independent initial and
normal watchdog timeout periods of 102.4s and 1.6s,
respectively.
MAX6887/MAX6888
Hex/Quad, Power-Supply Supervisory Circuits
_______________________________________________________________________________________
9
Table 2. MAX6888 Threshold Options
UV THRESHOLDS (V)
OV THRESHOLDS (V)
PART
IN1
IN2
IN3
IN4
IN1
IN2
IN3
IN4
MAX6888AETE
4.620
3.060
2.310
1.670
5.360
3.540
2.680
1.930
MAX6888BETE
4.620
3.060
2.310
0.557
5.360
3.540
2.680
0.643
MAX6888CETE
4.620
3.060
1.670
0.557
5.360
3.540
1.930
0.643
MAX6888DETE
3.060
2.310
1.670
1.390
3.540
2.680
1.930
1.610
MAX6888EETE
3.060
2.310
1.670
0.557
3.540
2.680
1.930
0.643
MAX6888FETE
3.060
2.310
1.390
0.557
3.540
2.680
1.610
0.643
MAX6888GETE
3.060
2.310
0.557
3.540
2.680
0.643
MAX6888HETE
3.060
1.670
0.557
3.540
1.930
0.643
MAX6888QETE
0.557
0.643
MAX6888IETE
4.380
2.880
2.190
1.580
5.620
3.700
2.810
2.020
MAX6888JETE
4.380
2.880
2.190
0.527
5.620
3.700
2.810
0.673
MAX6888KETE
4.380
2.880
1.580
0.527
5.620
3.700
2.020
0.673
MAX6888LETE
2.880
2.190
1.580
1.310
3.700
2.810
2.020
1.680
MAX6888METE
2.880
2.190
1.580
0.527
3.700
2.810
2.020
0.673
MAX6888NETE
2.880
2.190
1.310
0.527
3.700
2.810
1.680
0.673
MAX6888OETE
2.880
2.190
0.527
3.700
2.810
0.673
MAX6888PETE
2.880
1.580
0.527
3.700
2.020
0.673
MAX6888RETE
0.527
0.673
相关PDF资料
PDF描述
MAX6887NETE+T Hex/Quad, Power-Supply Supervisory Circuits
MAX6887OETE+ Hex/Quad, Power-Supply Supervisory Circuits
MAX6887OETE+T Hex/Quad, Power-Supply Supervisory Circuits
MAX6887PETE+ Hex/Quad, Power-Supply Supervisory Circuits
MAX6887PETE+T Hex/Quad, Power-Supply Supervisory Circuits
相关代理商/技术参数
参数描述
MAX6887NETE+ 功能描述:监控电路 Hex Power-Supply Supervisor 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
MAX6887NETE+T 功能描述:监控电路 Hex Power-Supply Supervisor 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
MAX6887NETE-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
MAX6887OETE 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
MAX6887OETE+ 功能描述:监控电路 Hex Power-Supply Supervisor 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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