LD7750RGR Datasheet PDF – High Voltage PWM Controller

Part Number: LD7750RGR

Function: High Voltage Green-Mode PWM Controller with Over Temperature Protection

Package: SOP-7 Pin Type

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


LD7750RGR image



The LD7750RGR integrates several functions of protections, and EMI-improved solution in a SOP-7 package to minimize the component counts and the circuit space. The device provides functions of low startup current, green-mode power-saving operation, leading-edge blanking of the current sensing and internal slope compensation. Also, the LD7750R features more protections like OLP (Over Load Protection), OVP (Over Voltage Protection), and  OTP (Over Temperature Protection) to prevent the circuit being damaged under the abnormal conditions. The LD7750R features built-in auto-recovery function for OVP on Vcc pin and OLP.


LD7750RGR datasheet pinout


1. High-Voltage (500V) Startup Circuit

2. Current Mode Control

3. Green Mode Control

4. UVLO (Under Voltage Lockout)

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

6. Internal Frequency Swapping

7. Internal Slope Compensation

8. Internal Over Current Protection

9. OVP (Over Voltage Protection) on Vcc

10. OLP (Over Load Protection)

11. External OTP through a NTC

12. 500mA Driving Capability



1. Switching AC/DC Adaptor and Battery Charger

2. Open Frame Switching Power Supply

3. LCD Monitor/TV Power

LD7750RGR Datasheet PDF


Other data sheets are available within the file: LD7750RGS, LD7750, LD7750RGN

Related articles across the web