DK1203 AC DC Switch Mode Power Controlling Dip 8 IC

DK1203 AC DC Switch Mode Power Controlling Dip 8 IC

The DK1203 is a compact and highly integrated switch mode power supply (SMPS) controller IC designed for off-line, low-power AC–DC conversion. It combines a high-voltage power MOSFET, PWM controller, and various protection circuits into a single DIP-8 package, providing a simple and cost-effective solution for compact power supply designs.

The IC operates directly from the AC mains and supports non-isolated buck, buck-boost, and flyback topologies, making it ideal for small power adapters, chargers, and standby power modules. With features such as auto-restart protection, cycle-by-cycle current limiting, and low standby power consumption, the DK1203 ensures high performance, reliability, and energy efficiency in a wide range of applications.

Specifications :-

• 85V—265V wide range AC power input.
• Build-in 700V power transistor.
• Internal integrated high voltage starting circuit, no need for additional resistance.
• Integrated self-start circuit.
• Pulse-Width Modulation (PWM) controlled system.
• VCC operating voltage range: 4-6V.
• 65kHz switching frequency.
• Automatically turn to skip cycle mode under light load condition.
• Over current, Over loading, Over temperature and Over voltage Protection.
• Standby power consumption lower then 0.3W.
• Internal frequency modulation circuit to reduce EMI filter cost.

Applications :

• AC/DC power adapters
• DVD/VCD power supply
• Air conditioner power supply
• Electromagnetic oven power supply
• DVB power supply
• LED driver applications
• TV/Monitor power supply

DK1203 Datasheet