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参数资料
型号： MAX6887QETE
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, MO-220WHHB, TQFN-16
文件页数： 12/13页
文件大小： 132K
代理商： MAX6887QETE
MAX6887/MAX6888
Hex/Quad, Power-Supply Supervisory Circuits
8
_______________________________________________________________________________________
detector input (IN1–IN6) to monitor a user-defined sup-
ply voltage:
where VMON is the desired voltage to be monitored.
Use the following procedure to design the proper volt-
age-divider and calculate thresholds:
1) Pick a value for R2. Use the equation above with
the desired supply voltage to be monitored and
solve for R1. Use high-value resistors R1 and R2 to
minimize current consumption due to low leakage
currents.
2) To find the actual undervoltage and overvoltage
thresholds, use the following equations:
VREFUV and VREFOV are the undervoltage and overvolt-
age thresholds listed in Tables 1 and 2 that allow
adjustable thresholds. Their values are based on toler-
ances of ±7.5% and ±12.5% from a 0.6V reference.
See the
Selector Guide to find which thresholds in
Tables 1 and 2 are adjustable.
Manual Reset (
MR)
Many P-based products require manual reset capability
to allow an operator or external logic circuitry to initiate a
reset. The manual reset input (MR) can be connected
directly to a switch without an external pullup resistor or
debouncing network. MR is internally pulled up to BP.
Leave unconnected if not used. MR is internally pulled
up to BP through a 10A current source. MR is designed
to reject fast, falling transients (typically 100ns pulses)
and MR must be held low for a minimum of 1s to assert
RESET. Connect a 0.1F capacitor from MR to ground to
provide additional noise immunity. After MR transitions
from low to high, RESET remains asserted for the dura-
tion of its time delay.
Margin Output Disable (
MARGIN)
MARGIN allows system-level testing while power sup-
plies exceed the normal operating ranges. Drive
MARGIN low to hold RESET, OV, and WDO in their
VV
V
VV
V
ACTUALUV
MON
REFUV
ACTUALOV
MON
REFOV
=×
=×
06
.
06
2
12
.V
V
R
RR
MON
=×
+
Table 1. MAX6887 Threshold Options
UV THRESHOLDS (V)
OV THRESHOLDS (V)
PART
IN1
IN2
IN3
IN4
IN5
IN6
IN1
IN2
IN3
IN4
IN5
IN6
MAX6887AETE
4.620
3.060
2.310
1.670
0.557
5.360
3.540
2.680
1.930
0.643
MAX6887BETE
4.620
3.060
2.310
0.557
5.360
3.540
2.680
0.643
MAX6887CETE
4.620
3.060
1.670
0.557
5.360
3.540
1.930
0.643
MAX6887DETE
3.060
2.310
1.670
1.390
0.557
3.540
2.680
1.930
1.610
0.643
MAX6887EETE
3.060
2.310
1.670
0.557
3.540
2.680
1.930
0.643
MAX6887FETE
3.060
2.310
1.390
0.557
3.540
2.680
1.610
0.643
MAX6887GETE
3.060
2.310
0.557
3.540
2.680
0.643
MAX6887HETE
3.060
1.670
0.557
3.540
1.930
0.643
MAX6887QETE
0.557
0.643
MAX6887IETE
4.380
2.880
2.190
1.580
0.527
5.620
3.700
2.810
2.020
0.673
MAX6887JETE
4.380
2.880
2.190
0.527
0.557
5.620
3.700
2.810
0.673
MAX6887KETE
4.380
2.880
1.580
0.527
0.557
5.620
3.700
2.020
0.673
MAX6887LETE
2.880
2.190
1.580
1.310
0.557
3.700
2.810
2.020
1.680
0.673
MAX6887METE
2.880
2.190
1.580
0.527
0.557
3.700
2.810
2.020
0.673
MAX6887NETE
2.880
2.190
1.310
0.527
0.557
3.700
2.810
1.680
0.673
MAX6887OETE
2.880
2.190
0.527
0.557
3.700
2.810
0.673
MAX6887PETE
2.880
1.580
0.527
0.557
3.700
2.020
0.673
MAX6887RETE
0.527
0.673
相关PDF资料
PDF描述
MAX6887QETE-T Hex/Quad, Power-Supply Supervisory Circuits
MAX6887RETE Hex/Quad, Power-Supply Supervisory Circuits
MAX6887RETE-T Hex/Quad, Power-Supply Supervisory Circuits
MAX6888AETE Hex/Quad, Power-Supply Supervisory Circuits
MAX6888AETE-T Hex/Quad, Power-Supply Supervisory Circuits
相关代理商/技术参数
参数描述
MAX6887QETE+ 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
MAX6887QETE+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
MAX6887QETE-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
MAX6887RETE 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
MAX6887RETE+ 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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