LW4933中文資料ETC數(shù)據(jù)手冊(cè)PDF規(guī)格書

Description

The LW4933 is designed with a pulse-width-modulation control circuit and

a complete power supervisor for use in the switched mode power supply .

It contains various functions, like under voltage protection (UVP), over

voltage protection (OVP), power good output (PG) and ON/OFF control

(REM).

UVP(Under voltage protection) function is for +3.3V, +5V, +12V outputs.

OVP(Over voltage protection) function is for +3.3V, +5V, +12V and PT is for

extra protection input.

PG(Power good signal) is a safe operation signal to inform the external

parts.

REM(Remote on/off) is used to control the SMPS on/off. The REM control

signal has the on/off transferred debounce–time.

FEATURE

■ 3-channel under voltage protection (UVP)

■ 3-channel over voltage protection (OVP)

■ 1-channel extra protection (PT)

■ 1-channel sense input to control the PG (SEN)

■ Remote on/off control function (REM)

■ Dual output for push-pull operation (OP1/OP2)

■ Soft start capability by external capacitor (SS)

■ VCC under voltage lockout

■ 16-Pin dual in-line package

■ Pb-free Package are available