
Leadtrend Technology
General Description
The LD7838 is a 700V HV start-up active PFC Flyback controller, specially designed for LED lighting application. This device operates in transition or boundary mode and integrates with completed protections required. It minimizes the components counts in either SOP-7 package. Those make it easy to design with for cost-effective applications.
FEATUREs
● High voltage (700V) startup circuit by HV pin for
85~305VAC input range
● High Power Factor ( > 0.92)
● High-efficiency Transition mode operation
● Lower Power Saving ( < 0.5W)
● Accurate OLP Compensation for High/ Low Line
● Built in BNI/ BNO Function
● Wide UVLO (16Von and 8 Voff) range
● Built in VCC Over Voltage Protection
● Built in Over Load Protection
● Adjustable Over Output Current Protection (Cycle
by Cycle Current Limiting)
● Internal Over temperature protection
APPLICATIONs
● Lighting Driver module
● Active Power Factor Correction Power Supply