L4993DTR datasheet(1/31 Pages) STMICROELECTRONICS

Part #	L4993DTR

Description	Automotive low drop voltage regulator

PDF	31 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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1 / 31 page

This is information on a product in full production.

September 2018

DS5285 Rev 10

1/31

L4993

Automotive low drop voltage regulator

Datasheet

- production data

Features

 AEC-Q100 qualified

 Operating DC supply

voltage range 5.6 V to 31 V

 Reset circuit sensing the output voltage down

to 1 V

 Programmable reset pulse delay with external

capacitor

 Watchdog

 Programmable watchdog timer with external

 Enable input for enabling/disabling the

watchdog functionality

 Thermal shutdown and short circuit protection

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

Description

The L4993 is a monolithic integrated 5 V Voltage

regulator 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 L4993 is protected against short

circuit and an over-temperature protection

switches off the device in case of extremely high

power dissipation. The L4993 watchdog is active

when the Enable is high. State of the art features

like reset and watchdog make this device

particularly suitable to supply microprocessor

systems in automotive applications.

Max DC supply voltage

VS

40 V

Max output voltage tolerance

∆V0

+/-2%

Max dropout voltage

Vdp

400 mV

Output current

I0

150 mA

Quiescent current

Iqn

79 μA (1)

1. Typical value with watchdog disabled.

SO-8

SO-20

Table 1. Device summary

Package

Order codes

Tube

Tape & reel

SO-8

—

L4993DTR

SO-20 (16+2+2)

L4993MD

L4993MDTR

www.st.com

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