LD7921 Datasheet PDF | Leadtrend Technology

Leadtrend Technology LD7921

The LD7921 integrated a 700V power MOSFET and a primary-side feedback PWM controller with CV/CC operation in a SOP-6/DIP-7 package. The LD7921 is designed for low power adapter/charger and LED lighting applications. It minimizes the components counts and is available in tiny packages.

Part No.	LD7921
Datasheet	LD7921 Download
Manufacturer	Leadtrend Technology
Description	Primary-Side PWM Power Switch
Buy	Stock & Price

GENERAL DESCRIPTION

Those make it an ideal design for low cost applications. The LD7921 provides constant voltage, constant current (CV/CC) operation requiring neither photo-coupler nor secondary control circuit. Also, the LD7921 features OTP (Over Temperature Protection) and OVP (Over Voltage Protection) to prevent the circuit from being damaged under abnormal conditions.

FEATURES

z Built-in 700V Power MOSFET z Primary-side Feedback Control z Constant Current Control z Built-in Load Regulation Compensation z Built-in Primary Winding Inductance Compensation z Low Startup Current (<16μA) z Current Mode Control with Cycle-by-Cycle Current Limit z Green Mode Control z UVLO (Under Voltage Lockout) z LEB (Leading-Edge Blanking) on CS Pin z OVP (Over Voltage Protection) on Vcc z OTP (Over Temperature Protection)

APPLICATIONS

z AC-DC Adapter and Charger z AC-DC LED Lighting Typical Application Leadtrend Technology Corporation LD7921-DS-00 February 2012 1 Pin Configuration SOP-6 (TOP VIEW) DIP...