LD7523 Datasheet PDF – Smart Green-Mode PWM Controller

Part Number: LD7523, LD7523GS, LD7523GN

Function: Smart Green-Mode PWM Controller with Multiple Protections

Package: SOP-8 Pin, DIP-8 Pin Type

Manufacturer: Leadtrend Technology ( http://www.leadtrend.com.tw/ )


LD7523 PWM controller


The LD7523 is a low startup current, current mode PWM controller with green-mode power-saving operation. The SOP-8/DIP-8 package integrated functions such as the leading- edge blanking of the current sensing, internal slope compensation, line compensation, and several protection features. The protection functions include cycle-by-cycle current limit, OVP, OLP, and brownout protection. It provides the users a high efficiency, low external component counts solution for AC/DC power applications.



LD7523 datasheet pinout


1. High-Voltage CMOS Process with Excellent ESD protection

2. Very Low Startup Current (< 35μA)

3. Current Mode Control

4. Non-audible-noise Green Mode Control

5. UVLO (Under Voltage Lockout)

6. LEB (Leading-Edge Blanking) on CS Pin

7. Internal Slope Compensation

8. Programmable Line Compensation

9. OVP (Over Voltage Protection)

10. OLP (Over Load Protection)

11. Brownout Protection

12. Built in OLP De-Latch Timer

13. 500mA Driving Capability



1. Switching AC/DC Adaptor and Battery Charger

2. Open Frame Switching Power Supply

3. LCD Monitor/TV Power



LD7523 Datasheet PDF


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