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参数资料
| 型号： | MAX6459UTC+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/15页 |
| 文件大小： | 0K |
| 描述： | IC SUPPLY VOLT MONITR SOT23-6 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 标准为 50 µs |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-6 |
| 包装： | 带卷 (TR) |
MAX6457–MAX6460
High-Voltage, Low-Current Voltage Monitors in
SOT Packages
= V
V TRIPLOW TH - ? TOTAL ?
= V
V TRIPHIGH TH + ? TOTAL ?
remains high. When V CC exceeds V TRIPHIGH , OUTB
asserts low while OUTA remains high. V TRIPLOW and
V TRIPHIGH are given by the following equations:
? R ?
? R 2 + R 3 ?
? R ?
? R 3 ?
where R TOTAL = R1 + R2 + R3.
Use the following steps to determine the values for R1,
R2, and R3.
Example Calculations for Window
Detection
The following is an example for calculating R1, R2, and
R3 of Figure 11 for window detection. Select the upper
and lower trip points (V TRIPHIGH and V TRIPLOW ).
V CC = 21V
V TRIPHIGH = 23.1V
V TRIPLOW = 18.9V
For 5% hysteresis, V TH + = 1.228 and V TH - = 1.167.
1) Choose R TOTAL = 4.2M ? = R1 + R2 + R3
2) Calculate R3
1) Choose a value for R TOTAL , the sum of R1, R2, and
R3. Because the MAX6458/MAX6459 have very
high input impedance, R TOTAL can be up to 5M ? .
R 3 =
V TH + × R TOTAL
V TRIPHIGH
=
( 1 . 228 V ) ( 4 . 2 M ? )
23 . 1 V
2) Calculate R3 based on R TOTAL and the desired
= 223 . 273 k ?
V TH + × R TOTAL
upper trip point:
R 3 =
V TRIPHIGH
3) Calculate R2 based on R TOTAL , R3, and the desired
lower trip point:
3) Calculate R2
V CC (4V TO 28V)
V CC
V OUT (UP TO 28V)
R 2 =
V TH- × R TOTAL
V TRIPLOW
- R 3
MAX6457–
MAX6460
OUT/
OUTA/
OUTB
R PULLUP
OUT/
OUTA/
OUTB
4) Calculate R1 based on R TOTAL , R3, and R2:
R1 = R TOTAL - R2 - R3
GND
Figure 13. Interfacing to Voltages Other than V CC
V MON
V CC
V CC
V CC
R PULLUP
IN-
V CC
R PULLUP
R1
IN+
MAX6457–
MAX6460
OUT
(OUTA FOR
OUT
(OUTA)
REF
MAX6460
OUT
OUT
R2
GND
MAX6459)
R1
R2
V NEG
IN+
GND
Figure 12. Monitoring Voltages Other than V CC
Maxim Integrated
Figure 14. Monitoring Negative Voltages
11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6460UT | 制造商:Maxim Integrated Products 功能描述:HIGH-VOLTAGE, LOW-CURRENT VOLTAGE MONITORS IN - Rail/Tube |
| MAX6460UT+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 6PIN SOT-23 - Rail/Tube |
| MAX6460UT+T | 功能描述:监控电路 Single Low C/V Voltage Monitor 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 |
| MAX6460UT-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 |
| MAX6461UK16 | 制造商:Maxim Integrated Products 功能描述:ULTRA-LOW-POWER VOLTAGE DETECTORS A - Cut Tape Product |
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