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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： | 1/12页 |
| 文件大小： | 425K |
| 代理商： | TC1278-5ENB |
2002 Microchip Technology Inc.
DS21384B-page 1
TC1278/TC1279
Features
Precision VCC Monitor for 5.0V System Supplies
250msec Minimum RESET Output Duration
Output Valid to VCC =1.2V
VCC Transient Immunity
Small 3-Pin SOT-23B Package
No External Components
Applications
Computers
Embedded Systems
Battery Powered Equipment
Critical
P Power Supply Monitoring
Device Selection Table
NOTE: “x” denotes a suffix for VCC threshold (see table below).
Package Type
General Description
The TC1278/TC1279 are cost-effective system super-
visor circuits designed to monitor VCC in digital systems
and provide a reset signal to the host processor when
necessary. No external components are required.
The reset output is driven active within 5
sec of VCC
falling through the reset voltage threshold. RESET is
maintained active for a minimum of 250msec after VCC
rises above the reset threshold. The TC1278 has an
active-high RESET output while the TC1279 has an
active-low RESET output, and both devices have an
open drain output stage. The output is valid down to
VCC = 1.2V. Both devices are available in a 3-Pin SOT-
23B package.
Typical Operating Circuit
Part
Number
Order
Package
Temp.
Range
TC1278-xENB
Open Drain
3-Pin SOT-23B
-40°C to +85°C
TC1279-xENB
Open Drain
3-Pin SOT-23B
-40°C to +85°C
Suffix
Reset VCC Threshold (V)
5
4.625
10
4.375
15
4.125
VCC
RESET
GND
TC1278-xENB
TC1279-xENB
1
2
3
NOTE: 3-Pin SOT-23B is equivalent to JEDEC TO-236
3-Pin SOT-23B
TC1279
VCC
RESET
Input
GND
Processor
1
2
3
3-Pin Reset Monitors for 5V Systems
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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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