HC2513 Datasheet – Precision PWM Power Switch

Part Number : HC2513

Function : High Precision CC/CV Primary-e PWM Power Switch, 5V 1A travel charger IC

Package : SOP8 Pin Type

Manufacturers :

Description :

HC2513 is a high performance offline PWM Power switch for low power AC/DC charger and adapter applications. It operates in primary-side sensing and regulation. Consequently, opto-coupler and TL431 could be eliminated. Proprietary Constant Voltage (CV) and Constant Current (CC) control is integrated as shown in the figure below.


HC2513 PWM power switch


1. High Precision Constant Current Regulation at Universal AC input
2. Primary-side Sensing and Regulation Without TL431 and Opto-coupler
3. Programmable CV and CC Regulation
4. Adjustable Constant Current and Output Power Setting


Pin Num Pin Name I/O Description
1 VDD P Power Supply
2 COMP I Loop Compensation for CV Stability
The Voltage feedback from auxiliary winding. Connected to resistor divider from auxiliary winding reflecting output voltage. PWM duty cycle is determined by EA output and current sense signal at pin 4.
4 CS I Current sense input
5/6 DRAIN O HV MOSFET Drain pin. The Drain pin is connected to the primary lead of the transformer
7/8 GND P Ground



Low Power AC/DC offline SMPS for

1. Cell Phone Charger
2. Digital Cameras Charger
3. Small Power Adapter
4. Auxiliary Power for PC, TV etc.
5. Linear Regulator/RCC Replacement

HC2513 Datasheet