L4993 데이터 시트보기 (PDF) - STMicroelectronics

부품명

상세내역

일치하는 목록

L4993

Low drop voltage regulator

STMicroelectronics 

L4993

Low drop voltage regulator

Features

Max DC supply voltage

VS

Max output voltage tolerance

∆V0

Max dropout voltage

Vdp

Output current

I0

Quiescent current

Iqn

1. Typical value with watchdog disabled.

40V

+/-2%

400 mV

150 mA

79 µA(1)

■ Operating DC supply voltage range 5.6V to

31V

■ Reset circuit sensing the output voltage down

to 1V

■ Programmable reset pulse delay with external

capacitor

■ Watchdog

■ Programmable watchdog timer with external

capacitor

■ Enable input for enabling/disabling the

watchdog functionality

■ Thermal shutdown and short circuit protection

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

SO-8

SO-20

Description

The L4993 is a monolithic integrated 5V Voltage

regulator with a low drop voltage at currents up to

150mA.The output voltage regulating element

consists in a p-channel MOS and the regulation is

performed regardless of input voltage transients

up to 40V. 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 dissipa-

tion. 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.

Table 1. Device summary

Package

SO-8

SO-20 (16+2+2)

Tube

L4993D

L4993MD

Order codes

Tape & reel

L4993DTR

L4993MDTR

April 2008

Rev 6

1/30

www.st.com

30

Share Link: