DK125 Datasheet | Dongke Semiconductor

DESCRIPTION The DK125 is a secondary side fly-back type AC-DC Switch Mode Power Controlling IC. Designed with high integration CMOS circuit, it has protection functions for short circuit, secondary side open circuit, over temperature, over voltage and so on. With built-in HV power transistor and patented Self-Power supply circuit, it has the characteristics of saving external ponents, simple transformer design with only two windings in isolated output circuit, etc. 2. APPLICATIONS - Battery charger - Power AC/DC adapters - STB power supply - Electromagnetic oven power supply - DVD/VCD/VCR power supply - Air conditioner power supply - LED driver applications - TV/Monitor power supply 3. MAIN FEATURES - 90V- 265V wide range AC power input. - Built-in 700V HV BJT - Internal integrated high voltage starting circuit, no need for additional resistance - Burst mode (22k Hz Intermittent operation mode) - Standby power consumption < 0.3W - 65KHz PWM switching frequency - 4KV ESD - Internal power pensation circuit to keep the stability of output in different input situation - Patented self-power supply design, no need for auxiliary winding in transformer - Internal frequency modulation circuit to reduce EMI filter cost - Over current, Over temperature, Over voltage, Output open circuit and Short circuit Protection 4. POWER RANGE AND PRINTING MODEL NO. DK125 PRINTING ON IC YYXXGZ DK125 INPUT VOLTAGE 90-265V AC TYPICAL POWER 24W REMARK: 1. YY: code of year. XX: code of batch. G: code of version. 2. The typical power is tested in a closed environment at 45 ℃ Z: internal code Address: Address: 4th Floor, A2 Bldg, Fuhai Information Port, Fuhai Street, Bao’an, Shenzhen, China Tel: 86-755-29598396 Email: amy@dkpower.cn Website: ..dkpower.cn ANHUI DONGKE SEMICONDUCTOR CO., LTD OFF-LINE SWITCH MODE POWER CONTROLLER -DK125 5. CONNECTION DIAGRAM (DIP-8) PIN FUNCTION Pin NO. Pin...