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参数资料
| 型号： | TC1278-5ENB |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| 封装： | SOT-23B, 3 PIN |
| 文件页数： | 7/12页 |
| 文件大小： | 425K |
| 代理商： | TC1278-5ENB |
TC1278/TC1279
DS21384B-page 4
2002 Microchip Technology Inc.
3.0
APPLICATIONS INFORMATION
3.1
Operation – Power Monitor
The TC1278/TC1279 provide the function of detecting
out-of-tolerance power supply conditions and warning
a processor-based system of impending power failure.
When VCC is detected as out-of-tolerance, the RESET
signal is asserted. On power-up, RESET is kept active
for approximately 350msec after the power supply has
reached the selected tolerance. This allows the power
supply and microprocessor to stabilize before RESET
is released.
FIGURE 3-1:
Timing Diagram –
Power Up (TC1279)
FIGURE 3-2:
Timing Diagram –
Power Down (TC1279)
FIGURE 3-3:
Timing Diagram –
Power Up (TC1278)
FIGURE 3-4:
Timing Diagram –
Power Down (TC1278)
4.75V
4.00V
tR
VCCTP
VCC
RESET
tRPU1
VOH
VCC
RESET
4.75V
VCCTP
4.00V
VOL
tRPD1
tF
tR
tRPU2
VOL
VCCTP
VCC
RESET
VCCTP(MAX)
VCCTP(MIN)
tF
tRPD2
VCC
4.74V
VOH
RESET
VCCTP
4.00V
RESET SLEWS WITH VCC
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC1278-5ENBTR | 功能描述:监控电路 3-Pin for 5V Systems 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 |
| TC1279 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:3-Pin Reset Monitors for 5V Systems |
| TC1279-10ENB | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:3-Pin Reset Monitors for 5V Systems |
| TC1279-10ENBTR | 功能描述:监控电路 3-Pin for 5V Systems 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 |
| TC1279-15ENB | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:3-Pin Reset Monitors for 5V Systems |
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