LW4933 - ETC

LW4933 POWER SUPPLY SUPERVISOR

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 outp.

Features

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 ORDERING INFORMATION ORDER NUMBER LW4933 Package DIP-16 (Pb-free) Shipping Tube Top Marking LW4933 REFERENCE APPLICATION CIRCUIT datasheet Rev.A1.0 1 LW4933D/ LW4933S POWER SUPPLY SUPERVISOR WITH PWM CONTROLLER PIN DESCRIPTION Pin Symbol 1 V33 2 V5 3 V12 4 PT 5 GND 6 RT 7 OP1 8 OP2 9 REM 10 SS 11 PG 12 SEN 13 VCC 14 COMP 15 NEG 16 POS Type I I I I O O I O I I O I I Function OVP, UVP for +3.3V OVP, UVP for +5V OVP, UVP for +1.