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參數資料
| 型號： | TC1278-10ENBTR |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| 封裝： | PLASTIC, SOT-23, 3 PIN |
| 文件頁數： | 1/12頁 |
| 文件大小： | 441K |
| 代理商： | TC1278-10ENBTR |
2007 Microchip Technology Inc.
DS21384D-page 1
TC1278/TC1279
Features
Precision VCC Monitor for 5.0V System Supplies
250 ms Minimum RESET Output Duration
Output Valid to VCC = 1.2V
VCC Transient Immunity
Small 3-Pin SOT-23 Package
No External Components
Internal Pull-up Resistor
Available in 3 different voltage detection levels:
- 4.625V (typ.), -5 suffix
- 4.375V (typ.), -10 suffix
- 4.125V (typ.), -15 suffix
Applications
Computers
Embedded Systems
Battery Powered Equipment
Critical P Power Supply Monitoring
Typical Operating Circuit
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
open-drain output uses an internal pull-up resistor of
approximately 6 k
Ω.
The reset output is driven active within 5 s of VCC
falling through the reset voltage threshold. RESET is
maintained active for a minimum of 250 ms after VCC
rises above the reset threshold. The TC1278 has an
active-high RESET output, while the TC1279 has an
active-low RESET output, with both devices having an
open-drain output stage. The output is valid down to
VCC = 1.2V. Both devices are available in a 3-Pin
SOT- 23 package.
Package Type
RESET
GND
+
–
VCC
VREF
Internal
Pull-up
6k
Ω
Resistor
TC1279
TC1278 has an active-high RESET output.
VCC
(TC1278) RESET
GND
TC1278
TC1279
1
2
3
3-Pin SOT-23
(TC1279) RESET
3-Pin Reset Monitors for 5V Systems
Obsolete Device
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TC1278-15ENB | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:3-Pin Reset Monitors for 5V Systems |
| TC1278-15ENBTR | 功能描述:監控電路 3-Pin for 5V Systems RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| TC1278-5ENB | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:3-Pin Reset Monitors for 5V Systems |
| TC1278-5ENBTR | 功能描述:監控電路 3-Pin for 5V Systems RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| TC1279 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:3-Pin Reset Monitors for 5V Systems |
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