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