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參數(shù)資料
| 型號： | LM9070 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Low-Dropout System Voltage Regulator with Keep-Alive ON/OFF Control |
| 中文描述： | 低壓差電壓調(diào)節(jié)器與系統(tǒng)保持活動ON / OFF控制 |
| 文件頁數(shù)： | 1/13頁 |
| 文件大?。?/td> | 292K |
| 代理商： | LM9070 |
LM9070
Low-Dropout System Voltage Regulator with Keep-Alive
ON/OFF Control
General Description
The LM9070 is a 5V, 3% accurate, 250 mA low-dropout volt-
age regulator. The regulator features an active low delayed
reset output flag which can be used to reset a microproces-
sor system on turn-ON and in the event that the regulator
output falls out of regulation for any reason. An external ca-
pacitor programs a delay time interval before the reset out-
put can return high.
Designed for automotive application the LM9070 contains a
variety of protection features such as reverse battery,
over-voltage shutdown, thermal shutdown, input transient
protection and a wide operating temperature range.
A unique two-input logic control scheme is used to enable or
disable the regulator output. An ON/OFF input can be pro-
vided by an ignition switch derived signal while a second,
Keep-Alive input, is generated by a system controller. This
allows for a system to remain ON after ignition has been
switched OFF. The system controller can then execute a
power-down routine and after which command the regulator
OFF to a low quiescent current state (60 μA max).
Design techniques have been employed to allow the regula-
tor to remain operational and not generate false reset signals
when subjected to high levels of RF energy (300V/m from
2 MHz to 400 MHz).
Features
n
Automotive application reliability
n
3% output voltage tolerance
n
Insensitive to radiated RFI
n
Dropout voltage less than 800 mV with 250 mA output
current
n
Externally programmed reset delay interval
n
Keep-alive feature with 2 logic control inputs
n
60V Load dump transient protection
n
Thermal shutdown
n
Short circuit protection and disable safety features
n
Reverse battery protection
n
Low OFF quiescent current, 50 μA maximum
n
Wide operating temperature range 40C to +125C
n
TO-263 and 20-pin power surface mount packages
n
Lead form compatible with TLE4267 TO-220 regulator
(package TA07D)
Connection Diagrams and Ordering Information
(Top View)
7-Lead TO-263
Surface Mount Package
DS012831-1
Backside metal is internally connected to ground.
Order Number LM9070S
See NS Package Number TS7B
20-Pin SO Package
DS012831-2
Order Number LM9070M
See NS Package Number M20B
December 1999
L
1999 National Semiconductor Corporation
DS012831
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM9070M | Low-Dropout System Voltage Regulator with Keep-Alive ON/OFF Control |
| LM9070S | Low-Dropout System Voltage Regulator with Keep-Alive ON/OFF Control |
| LM9070T | Low-Dropout System Voltage Regulator with Keep-Alive ON/OFF Control |
| LM9071 | Low-Dropout System Voltage Regulator with Delayed Reset |
| LM9071S | Low-Dropout System Voltage Regulator with Delayed Reset |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM9070M | 制造商:Rochester Electronics LLC 功能描述:5V LDO REG W/ KEEP ALIVE - Bulk |
| LM9070S | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LM9070S/NOPB | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LM9070SX | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LM9070SX/NOPB | 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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