LM9070 - 具有保持连接开/关控制的低压降系统电压稳压器

LM9070是TI德州仪器公司的一款单通道LDO产品，LM9070是具有保持连接开/关控制的低压降系统电压稳压器，本站介绍了LM9070的封装应用图解、特点和优点、功能等，并给出了与LM9070相关的TI元器件型号供参考。

LM9070 - 具有保持连接开/关控制的低压降系统电压稳压器 - 单通道LDO - 线性稳压器(LDO) - 德州仪器

产品描述

The LM9070 is a 5V, 3% accurate, 250 mA low-dropout voltage regulator. The regulator features an active low delayed reset output flag which can be used to reset a microprocessor system on turn-ON and in the event that the regulator output falls out of regulation for any reason. An external capacitor programs a delay time interval before the reset output 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 provided 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 regulator 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).

产品特性

Automotive Application Reliability
3% Output Voltage Tolerance
Insensitive to Radiated RFI
Dropout Voltage Less than 800 mV with 250 mA Output Current
Externally Programmed Reset Delay Interval
Keep-Alive Feature with 2 Logic Control Inputs
60V Load Dump Transient Protection
Thermal Shutdown
Short Circuit Protection and Disable Safety Features
Reverse Battery Protection
Low OFF Quiescent Current, 50 μA Maximum
Wide Operating Temperature Range −40°C to +125°C
TO-263 and 20-Pin Power Surface Mount Packages
Lead Form Compatible with TLE4267 TO-220 Regulator

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