LP3470A438DBVR集成電路（IC）的監(jiān)控器規(guī)格書PDF中文資料

LP3470A438DBVR屬于集成電路（IC）的監(jiān)控器。由美國德州儀器公司制造生產(chǎn)的LP3470A438DBVR監(jiān)控器PMIC 監(jiān)控器用于監(jiān)視和/或控制電路中的電壓軌，能夠連接微控制器以維持一定的功率限值。監(jiān)控器類型包括電池備用電路、監(jiān)控器、多電壓監(jiān)控器、電源監(jiān)控器、穩(wěn)壓器/監(jiān)控器、復位計時器、定序器、簡單復位/上電復位、智能開/關控制器、系統(tǒng)管理器、電壓檢測器和看門狗電路。

1 Features

1? Pin-to-pin compatible with LP3470

? 5-Pin SOT-23 package

? Open-drain RESET output

? Programmable reset time-out period using an

external capacitor

? Immune to short VCC transients

? ±1% Reset threshold accuracy (typical)

? Ultra-low quiescent current (0.3 μA typical)

? RESET valid down to VCC = 0.95 V

2 Applications

? Critical μP and μC power monitoring

? Intelligent instruments

? Computers

? Portable and battery-powered equipment

? Building automation: building security system,

video surveillance

? Factory automation: field transmitters, position

and proximity sensors

? Motor drives

3 Description

The LP3470A device is a micropower voltage

supervisory circuit designed to monitor voltages

within 1% of reset threshold overtemperature and is

pin-to-pin compatible with existing TI device LP3470.

The LP3470A device provides accurate, nano-power

voltage monitoring with programmable delay.

The LP3470A asserts a reset signal whenever the

VCC supply voltage falls below a reset threshold. The

reset time-out period is adjustable using an external

capacitor. Reset remains asserted for an interval

(programmed by an external capacitor) after VCC has

risen above the threshold voltage plus hysteresis.

For information on available reset threshold voltage

options, see Mechanical, Packaging, and Orderable

Information.