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參數(shù)資料
| 型號(hào)： | LP3470M5-3.65/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 559K |
| 代理商： | LP3470M5-3.65/NOPB |
LP3470
Tiny Power On Reset Circuit
General Description
The LP3470 is a micropower CMOS voltage supervisory
circuit designed to monitor power supplies in microprocessor
(P) and other digital systems. It provides maximum adjust-
ability for power-on-reset (POR) and supervisory functions. It
is available in the following six standard reset threshold
voltage (V
RTH) options: 2.63V, 2.93V, 3.08V, 3.65V, 4.00V,
4.38V, and 4.63V. If other voltage options between 2.4V and
5.0V are desired please contact your National Semiconduc-
tor representative.
The LP3470 asserts a reset signal whenever the V
CC supply
voltage falls below a reset threshold. The reset time-out
period is adjustable using an external capacitor. Reset re-
mains asserted for an interval (programmed by an external
capacitor) after V
CC has risen above the threshold voltage.
The device is available in the tiny SOT23-5 package.
Key Specifications
n ±
1% Reset Threshold Accuracy Over Temperature
n
Standard Reset Threshold Voltages: 2.63V, 2.93V,
3.08V, 3.65V, 4.00V, 4.38V, and 4.63V
n
Custom Reset Threshold Voltages: For other voltages
between 2.4V and 5.0V contact your National
Semiconductor representative
n
Very Low Quiescent Current (16 A typical)
n
Guaranteed Reset valid down to V
CC=0.5V
Features
n
Tiny SOT23-5 Package
n
Open Drain Reset Output
n
Programmable Reset Timeout Period Using an External
Capacitor
n
Immune to Short V
CC Transients
Applications
n
Critical P and C Power Monitoring
n
Intelligent Instruments
n
Computers
n
Portable/Battery-Powered Equipments
Pin Configuration and Basic Operating Circuit
Pin Configuration
Basic Operating Circuit
10001602
Top View
See NS Package Number
MF05A
10001601
September 2000
LP3470
T
iny
Power
On
Reset
Circuit
2004 National Semiconductor Corporation
DS100016
www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3470M5-4.00 | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(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 |
| LP3470M5-4.00/NOPB | 功能描述:監(jiān)控電路 TINY POWER ON RESET CIRCUIT RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(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 |
| LP3470M5-4.38 | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(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 |
| LP3470M54.38/NOPB | 制造商:Texas Instruments 功能描述: |
| LP3470M5-4.38/NOPB | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(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 |
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