Description

Power Switch Mode Control IC - 8 Pin (4 Pack)

The DK112 Power Switch Mode Control DIP IC is a flyback AC-DC offline switching power supply control chip. With integrated CMOS design, it ensures protection against short circuits, overheating, and overvoltage. Designed for low-power switch mode control, it suits various small household appliances. Featuring a wide input range (85V–265V AC), 65KHz Oscillation Frequency, and comprehensive protection functions, including overloading and over-temperature safeguards. This IC incorporates internal compensation circuits, ramp current drives, and ESD resistance for enhanced efficiency, stability, and EMC compliance, making it ideal for applications like DVD/VCD power supplies, AC/DC adapters, LED drivers, and more.

Quick Spec

Input Voltage: 85 ~ 265VAC
Oscillation Frequency: 65KHz
· Double chip design with Bipolar Junction Transistor (BJT)
· 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 power)
Internal integrated constant high voltage current driving circuit
Protection: Over current, Over loading, Over temperature, Over voltage, Output short circuit and photo-coupler
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
Ramp current drive circuit included to reduce IC power loss and raise circuit efficiency
4KV Anti-Static ESD test
Pin Pitch: 2.54mm
Dimensions: 9.5 x 6 x 3.2mm

Pinout

1. Test: Testing pin, suggested to be unloaded (Prohibited to be connected to other circuits)
2. GND: Ground reference
3. Fb: Feedback control pin
4. VCC: Power supply of the control circuits
5 - 8. Collector: Connected with internal high voltage Collector point and switch mode transformer