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参数资料
| 型号： | MAX6750KA18-T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封装： | SOT-23, 8 PIN |
| 文件页数： | 3/14页 |
| 文件大小： | 170K |
| 代理商： | MAX6750KA18-T |
Interfacing to Other Voltages for
Logic Compatibility
The open-drain RESET output can be used to interface
to a P with other logic levels. As shown in Figure 6, the
open-drain output can be connected to voltages from 0
to 6V.
Generally, the pullup resistor connected to the RESET
connects to the supply voltage that is being monitored
at the IC’s VCC pin. However, some systems can use
the open-drain output to level-shift from the monitored
supply to reset circuitry powered by some other supply.
Keep in mind that as the supervisor’s VCC decreases
towards 1V, so does the IC’s ability to sink current at
RESET. Also, with any pullup resistor, RESET is pulled
high as VCC decays toward zero. The voltage where
this occurs depends on the pullup resistor value and
the voltage to which it is connected.
Ensuring a Valid RESET Down to VCC = 0V
(Push-Pull RESET)
When VCC falls below 1V, RESET current sinking capabil-
ities decline drastically. The high-impedance CMOS-
logic inputs connected to RESET can drift to undeter-
mined voltages. This presents no problems in most
applications, since most Ps and other circuitry do not
operate with VCC below 1V.
In those applications where RESET must be valid down
to 0V, add a pulldown resistor between RESET and
GND for the MAX6746/MAX6748/MAX6750/MAX6752
push/pull outputs. The resistor sinks any stray leakage
currents, holding RESET low (Figure 7). The value of the
pulldown resistor is not critical; 100k
Ω is large enough
not to load RESET and small enough to pull RESET to
ground. The external pulldown can not be used with
the open-drain reset outputs.
MAX6746–MAX6753
P Reset Circuits with Capacitor-Adjustable
Reset/Watchdog Timeout Delay
______________________________________________________________________________________
11
MAX6746
MAX6748
MAX6450
MAX6752
GND
RESET
VCC
100k
Ω
Figure 7. Ensuring RESET Valid to VCC = 0V
相关PDF资料 |
PDF描述 |
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| MAX6750KA19-T | µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay |
| MAX6750KA20-T | µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay |
| MAX6750KA21-T | µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay |
| MAX6750KA22-T | µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay |
| MAX6750KA24-T | µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6750KA19 | 制造商:Maxim Integrated Products 功能描述:SINGLE/DUAL-VOLT MICROPROC. RESET C - Rail/Tube |
| MAX6750KA19+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 |
| MAX6750KA19-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 |
| MAX6750KA20 | 制造商:Maxim Integrated Products 功能描述:SINGLE/DUAL-VOLT MICROPROC. RESET C - Rail/Tube |
| MAX6750KA20+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 |
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