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参数资料
| 型号： | TC1279-10ENBTR |
| 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： | 3/6页 |
| 文件大小： | 38K |
| 代理商： | TC1279-10ENBTR |
3
TC1278/9-1
2/4/00
TC1278
TC1279
3-Pin Monitors for 5V Systems
PIN DESCRIPTION
Pin No.
(3-Pin SOT-23) Symbol
Description
1
RESET
RESET output remains low while VCC is below the reset voltage threshold, and
(TC1279)
for 350msec (250msec min.) after VCC rises above reset threshold. The output
stage of the TC1279 is open drain.
1
RESET
RESET output remains high while VCC is below the reset voltage threshold,
(TC1278)
and for 350msec (250msec min.) after VCC rises above reset threshold. The
ouput stage of the TC1278 is open drain.
2
GND
Ground
3VCC
Supply voltage (1.2V to 5.5V)
APPLICATION INFORMATION
Operation - Power Monitor
The TC1278 and 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 350 ms after the power
supply has reached the selected tolerance. This allows
the power supply and microprocessor to stabilize before
RESET is released.
4.75V
4.00V
t
R
V
CCTP
V
CC
RESET
t
RPU
1
V
OH
Figure 1. Timing Diagram: Power Up (TC1279)
Figure 2. Timing Diagram: Power Down (TC1279)
V
CC
RESET
4.75V
V
CCTP
4.00V
V
OL
t
RPD1
t
F
Figure 3. Timing Diagram: Power Up (TC1278)
t
R
t
RPU
V
CCTP
(MAX)
V
OL
V
CCTP
V
CCTP
(MIN)
VCC
RESET
2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC1279-15ENB | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:3-Pin Reset Monitors for 5V Systems |
| TC1279-15ENBTR | 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 |
| TC1279-5ENB | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:3-Pin Reset Monitors for 5V Systems |
| TC1279-5ENBTR | 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 |
| TC127A | 制造商:Thomas & Betts 功能描述:Fittings Connector 2.5inch Steel |
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