NCP3065D3SLDGEVB(2): 350mA @ 7 ~ 23V out, 8 ~ 25V in

Summary

* The eval board must be modified for 350mA output. The Transformer/Dual inductor and sense resistor(s).

This circuit is intended for driving high power LEDs, such as the Cree XLAMP™ series, Lumileds Luxeon™ Rebel and K2 and OSRAM, Golden and Platinum Dragon™ as well as the OSTAR™. It is designed for such wide input nominal 12 Vdc applications as automotive and low voltage lighting (12 Vdc/12 Vac). An optional dimming PWM input is included.

The circuit is based on NCP3065 operation at 250 kHz in a non-isolated configuration. The primary advantages of this circuit are in the wide input voltage range, wide output voltage range, and in its high efficiency.

A pulse feedback resistor (R8) is used to vary the slope of the oscillator ramp, achieving duty cycle control and steady switching frequency over a wide input voltage range.

Specifications

Manufacturer	onsemi
Category	Lighting
Sub-Category	LED Drivers - DC In
Eval Board Part Number	NCP3065D3SLDGEVBOS-ND
Eval Board Supplier	onsemi
Eval Board	Board not Stocked
Voltage In	8 ~ 25 V
Topology	Step Up/Down
Current Out	350 mA
Voltage Out (Max)	23 V
Outputs and Type	1 Non-Isolated
Efficiency @ Conditions	>80%, 8 ~ 15V in, 22Vf @ 350 mA >75%, 8 ~ 20V in, 14Vf @ 350 mA
Features	Dimming Control Open Circuit Protection Short Circuit Protection
Switching Frequency	250 kHz
Component Count + Extras	26 + 8
Design Author	ONSemiconductor
Application / Target Market	Automotive Lighting: LED Home Lighting Lighting: LED Signage
Main I.C. Base Part	NCP3065
Date Created By Author
Date Added To Library	2011-09