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参数资料
| 型号： | MAX6714AUB+T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | Low-Voltage, High-Accuracy, Quad Voltage Monitors in µMAX Package |
| 中文描述： | 4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
| 封装： | MICRO MAX PACKAGE-10 |
| 文件页数： | 13/13页 |
| 文件大小： | 287K |
| 代理商： | MAX6714AUB+T |
resistors are not required when using the MAX6709/
MAX6714 because hysteresis is built into the device.
MAX6709/MAX6714 hysteresis is typically 0.3% of the
threshold voltage.
Undervoltage Detection Circuit
The open-drain outputs of the MAX6709/MAX6714 can
be configured to detect an undervoltage condition.
Figure 3 shows a configuration where an LED turns on
when the comparator output is low, indicating an
undervoltage condition.
The MAX6709/MAX6714 can also be used in applica-
tions such as system supervisory monitoring, multivolt-
age level detection, and VCC bar graph monitoring
(Figure 4).
Window Detection
A window detector circuit uses two auxiliary inputs in a
configuration such as the one shown in Figure 5.
External resistors R1–R4 set the two threshold voltages
(VTH1 and VTH4) of the window detector circuit. Window
width (
VTH) is the difference between the threshold
voltages (Figure 6).
Adjustable Input
The MAX6709 offers several monitor options with
adjustable reset thresholds. The MAX6714 has three
monitored inputs with adjustable thresholds. The thresh-
old voltage at each adjustable IN_ (PFI_) input is typically
0.62V. To monitor a voltage >0.62V, connect a resistor-
divider network to the circuit as shown in Figure 7.
VINTH = 0.62V (R1 + R2) / R2
MAX6709/MAX6714
Low-Voltage, High-Accuracy Quad, Voltage
Monitors in MAX Package
_______________________________________________________________________________________
9
IN1
VCC
GND
IN2
IN3
IN4
PWRGD1
PWRGD2
PWRGD3
PWRGD4
5V
MAX6709
V1
V2
V3
V4
Figure 3. Quad Undervoltage Detector with LED Indicators
D3
D1
D2
D4
IN1
VCC
GND
IN2
IN3
IN4
PWRGD1
PWRGD2
PWRGD3
PWRGD4
VIN (5V)
5V
MAX6709
Figure 4. VCC Bar Graph Monitoring
IN1
VCC
GND
IN2
IN3
IN4
PWRGD1
PWRGD2
PWRGD3
PWRGD4
5V
MAX6709
OUT
INPUT
R2
R4
R1
R3
VTH1 =
(1 + )VREF
R2
R1
VTH4 =
(1 + )VREF
R4
R3
VREF = 0.62V
Figure 5. Window Detection
PWRGD1
PWRGD4
OUT
VTH1
VTH4
VTH
Figure 6. Output Response of Window Detector Circuit
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6714BUB | 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 |
| MAX6714BUB+ | 功能描述:监控电路 Quad 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 |
| MAX6714BUB+T | 功能描述:监控电路 Quad 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 |
| MAX6714BUB-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 |
| MAX6714CUB | 功能描述:监控电路 Integrated Circuits (ICs) 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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