DESCRIPTION
The DK112 is specially design for low power switch mode control, it is widely use in small household
electrical appliances.

APPLICATIONS
·Battery charger ·DVD/VCD power supply
·Power AC/DC adapters ·Air conditioner power supply
·STB power supply ·AC/DC LED driver applications
·Electromagnetic oven power supply ·TV/Monitor power supply

MAIN FEATURES
· 85V—265V wide range AC power input.
· 65KHz Oscillation Frequency.
· Double chip design with Bipolar Junction Transistor (BJT) to save cost.
· Large scale MOS digital circuit design with E pole BJT driving, so that to enhance its High Voltage
Resistance capability.
· Self-power supply design, no need for additional IC to supply the electricity.
· Internal integrated constant high voltage current driving circuit, no need for additional resistance.
· Over current, Over loading, Over temperature, Over voltage, Output short circuit and photo-coupler
Failure Protection.
· Internal Ramp Compensation circuit to keep the stability of the circuit in low voltage and high power
condition.
· Internal PMW oscillation circuit with Frequency jittering control to keep EMC characteristics.
· Internal Frequency Conversion. Frequency-down in low load condition, comply with the Europe Standard
(stand power<0.3W), also reduce the output voltage ripple.
· Ramp current drive circuit included to reduce IC power loss and raise circuit efficiency.
· 4KV Anti-Static ESD test.