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参数资料
| 型号： | MAX6888FETE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/13页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR QUAD 16-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 多压监控器 |
| 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： | 最小为 180 ms |
| 电压 - 阀值： | 1.5V，2.5V，3.3V，可调 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
Hex/Quad, Power-Supply Supervisory Circuits
0 . 6 V = V MON × ?
? R 1 + R 2 ?
V ACTUALUV MON × ? REFUV ?
= V
V ACTUALOV MON × ? REFOV ?
= V
detector input (IN1–IN6) to monitor a user-defined sup-
ply voltage:
? R 2 ?
?
where V MON 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:
? V ?
? 0 . 6 V ?
? V ?
? 0 . 6 V ?
V REFUV and V REFOV 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 μP-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 10μA current source. MR is designed
to reject fast, falling transients (typically 100ns pulses)
and MR must be held low for a minimum of 1μs to assert
RESET . Connect a 0.1μF 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
Table 1. MAX6887 Threshold Options
PART
IN1
IN2
UV THRESHOLDS (V)
IN3 IN4
IN5
IN6
IN1
IN2
OV THRESHOLDS (V)
IN3 IN4
IN5
IN6
MAX6887AETE
MAX6887BETE
MAX6887CETE
MAX6887DETE
MAX6887EETE
MAX6887FETE
MAX6887GETE
MAX6887HETE
MAX6887QETE
MAX6887IETE
MAX6887JETE
MAX6887KETE
MAX6887LETE
MAX6887METE
MAX6887NETE
MAX6887OETE
MAX6887PETE
MAX6887RETE
4.620
4.620
4.620
3.060
3.060
3.060
3.060
3.060
0.557
4.380
4.380
4.380
2.880
2.880
2.880
2.880
2.880
0.527
3.060
3.060
3.060
2.310
2.310
2.310
2.310
1.670
0.557
2.880
2.880
2.880
2.190
2.190
2.190
2.190
1.580
0.527
2.310
2.310
1.670
1.670
1.670
1.390
0.557
0.557
0.557
2.190
2.190
1.580
1.580
1.580
1.310
0.527
0.527
0.527
1.670
0.557
0.557
1.390
0.557
0.557
0.557
0.557
0.557
1.580
0.527
0.527
1.310
0.527
0.527
0.527
0.527
0.527
0.557
0.557
0.557
0.557
0.557
0.557
0.557
0.557
0.557
0.527
0.557
0.557
0.557
0.557
0.557
0.557
0.557
0.527
0.557
0.557
0.557
0.557
0.557
0.557
0.557
0.557
0.557
0.527
0.557
0.557
0.557
0.557
0.557
0.557
0.557
0.527
5.360
5.360
5.360
3.540
3.540
3.540
3.540
3.540
0.643
5.620
5.620
5.620
3.700
3.700
3.700
3.700
3.700
0.673
3.540
3.540
3.540
2.680
2.680
2.680
2.680
1.930
0.643
3.700
3.700
3.700
2.810
2.810
2.810
2.810
2.020
0.673
2.680
2.680
1.930
1.930
1.930
1.610
0.643
0.643
0.643
2.810
2.810
2.020
2.020
2.020
1.680
0.673
0.673
0.673
1.930
0.643
0.643
1.610
0.643
0.643
0.643
0.643
0.643
2.020
0.673
0.673
1.680
0.673
0.673
0.673
0.673
0.673
0.643
0.643
0.643
0.643
0.643
0.643
0.643
0.643
0.643
0.673
0.673
0.673
0.673
0.673
0.673
0.673
0.673
0.673
0.643
0.643
0.643
0.643
0.643
0.643
0.643
0.643
0.643
0.673
0.673
0.673
0.673
0.673
0.673
0.673
0.673
0.673
8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6888GETE | 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 |
| MAX6888GETE+ | 功能描述:监控电路 Quad 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 |
| MAX6888GETE+T | 功能描述:监控电路 Quad 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 |
| MAX6888GETE-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 |
| MAX6888HETE | 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 |
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