LM9072数据手册集成电路（IC）的线性+开关稳压器规格书PDF

描述 Description

General Description
The LM9072 is a high performance voltage regulator system with operational and protection features that address many requirements of automotive applications. Two regulated outputs are provided. The main regulator provides a precision 2% maximum tolerance 5V output at 350 mA with a low drop out characteristic. The second regulator provides a 5V output that tracks the main regulator output voltage within 1.5% with load currents up to 80 mA. The tracking output is ideal for use in powering remotely located sensors with outputs that are ratiometric to the main system supply. This output is fully protected from short circuits to ground or the unregu lated input supply (ignition or battery potentials in automotive applications).

特性 Features

■ Two 5V regulated outputs:
    — 350 mA, 2% Main output
    — 80 mA, 1.5% Tracking output
■ Good EMI (1 MHz to 400 MHz, BCI) immunity
■ Separate ON/OFF and Keep-Alive control inputs
■ Less than 100 µA quiescent current in OFF state
■ Programmable delayed reset output
■ Input transient protection over 60V to −45V
■ Tracking output protected from shorts to battery
■ Less than 1V dropout at full load
■ −40˚C to +125˚C operating temperature range
■ Surface mount TO-263 Power Package and Standard TO-220 power packageTypical Applications
■ Automotive module supply power conditioning
■ Remote sensor biasing
■ Ratiometric to supply sensor detection
■ Continuous operation for save routines and
   EPROM programming after power down command
■ Safety related systems — EMC operational

应用 Application

■ Automotive module supply power conditioning
■ Remote sensor biasing
■ Ratiometric to supply sensor detection
■ Continuous operation for save routines and
   EPROM programming after power down command
■ Safety related systems — EMC operational