參數(shù)資料
型號(hào)： LM3724I4.63MWC
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, UUC
封裝： WAFER
文件頁(yè)數(shù)： 1/24頁(yè)
文件大?。?/td> 398K
代理商： LM3724I4.63MWC
LM3722/LM3723/LM3724
5-Pin Microprocessor Reset Circuits
General Description
The LM3722/LM3723/LM3724 microprocessor supervisory
circuits monitor the power supplies in microprocessor and
digital systems. They provide a reset to the microprocessor
during power-up, power-down, brown-out conditions, and
manual reset.
The LM3722/LM3723/LM3724 asserts a reset signal when-
ever the supply decreases below the factory-programmed
reset threshold for at least 100 ms. The reset signal remains
asserted for 190 ms after V
CC rises above the threshold.
The LM3722 has an active-low RESET push-pull output. The
LM3723 has an active-high RESET push-pull output. The
LM3724 has an active-low open-drain RESET output.
Three standard reset voltage options are available, suitable
for monitoring 5V, 3.3V, and 2.5V supply voltages. Additional
reset voltages are also available; contact National Semicon-
ductor for details.
With
a
low
supply
current
of
only
6A,
the
LM3722/LM3723/LM3724 are ideal for use in portable equip-
ment. The LM3722/LM3723/LM3724 are available in the
5-pin SOT23 package.
Features
n
Precise monitoring of 2.5V, 3.3V, and 5V supply
voltages
n
Fully specified over temperature
Industrial: 40C to +85C
Extended: 40C to +125C
n
100 ms minimum Power-On Reset pulse width, 190 ms
typical:
Active-Low RESET Output (LM3722)
Active-High RESET Output (LM3723)
Active-Low RESET Open Drain Output (LM3724)
n
Guaranteed RESET Output valid for V
CC ≥ 1V
n
Low Supply Current, 6A typical
n
Power supply transient immunity
n
Compatible with MAX811/812 applications
Applications
n
Microprocessor Systems
n
Computers
n
Controllers
n
Intelligent Instruments
n
Portable/Battery-Powered Equipment
Typical Application Circuit
20014401
20014437
Connection Diagram
SOT23-5
20014402
*( ) are for LM3723
June 2001
LM3722/LM3723/LM3724
5-Pin
Microprocessor
Reset
Circuits
2001 National Semiconductor Corporation
DS200144
www.national.com
相關(guān)PDF資料
PDF描述
LM3812-7.0 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
LM3813X-7.0 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
LM3812-1.0 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
LM3813MX-7.0/NOPB 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
LM3812MX-1.0/NOPB 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM3724IM5-2.32 制造商:Texas Instruments 功能描述:RESET CIRCUIT SMD 3724 SOT-23-5 制造商:Texas Instruments 功能描述:RESET CIRCUIT, SMD, 3724, SOT-23-5
LM3724IM5-2.32 制造商:Texas Instruments 功能描述:RESET CIRCUIT SMD 3724 SOT-23-5
LM3724IM5-2.32/NOPB 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
LM3724IM5232NOPB 制造商:NATIONAL 功能描述:2 partial reels
LM3724IM5-3.08 制造商:Texas Instruments 功能描述:Processor Supervisor 3.08V 2.5V/3.3V/5V 5-Pin SOT-23 T/R 制造商:Texas Instruments 功能描述:RESET CIRCUIT SMD 3724 SOT-23-5 制造商:Texas Instruments 功能描述:RESET CIRCUIT, SMD, 3724, SOT-23-5
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