L4989MD datasheet(1/19 Pages) STMICROELECTRONICS

номер детали	L4989MD

подробное описание детали	Automotive low power voltage regulator

PDF	19 Pages

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производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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1 / 19 page

This is information on a product in full production.

October 2018

DS8714 Rev 3

1/19

L4989D, L4989MD

Automotive low power voltage regulator

Datasheet

- production data

Features

 AEC-Q100 qualified

 Operating DC supply

voltage range 5.6 V to 31 V

 Very low quiescent current with watchdog

disabled

 Precision output voltage (±3%)

 Low drop voltage (180 mV typ at Io = 150 mA)

 Reset circuit sensing the output voltage down

to 1 V

 Programmable reset delay with external

capacitor

 Watchdog disable input

 Programmable watchdog timer with external

capacitor

 Thermal shutdown and short circuit protection

 Wide temperature range (Tj = -40°C to 150°C)

Description

The L4989M and L4989MD are monolithic

integrated 5 V voltage regulators with a low drop

voltage at currents up to 150 mA.

The output voltage regulating element consists in

a p-channel MOS and the regulation is performed

regardless of input voltage transients up to 40 V.

The high precision of the output voltage is

obtained with a pre-trimmed reference voltage.

The devices are protected against short circuit

and an overtemperature protection switches off

the devices in case of extremely high power

dissipation.

The L4989M and L4989MD watchdogs are active

when the Enable pin is high. Features like reset

and watchdog make this devices particularly

suitable to supply microprocessor systems in

automotive applications.

SO-8

SO-20

Table 1. Device summary

Package

Order codes

Tube

Tape & reel

SO-8

L4989D

L4989D013TR

SO-20

L4989MD

L4989MD013TR

www.st.com

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