NCP5050 Datasheet (ON Semiconductor) - 4.5 W Flash White LED Boost Driver

NCP5050, 4.5 W Flash White LED Boost Driver

Pin Pin Name Type Description 1 PGND POWER Power Ground: This pin is the power ground and carries the high switching current.

A high quality ground must be provided to avoid any noise spikes/uncontrolled operation.

Cares must be observed to avoid high *density current flow in a limited PC

NCP5050 4.5 W Flash White LED Boost Driver The NCP5050 is a high powered fixed frequency PWM boost converter optimized for constant current applications such as driving high powered white LEDs.

This device has been designed with high efficiency for use in portable applications and is capable of driving up to 5 high power LEDs in series for camera flash or flashlight (torch) applications.

To support the need of driving the LEDs in a high current pulse mode for flash as well as

NCP5050 Features

* High Efficiency Up to 88% for 2 LED (VF = 3.5 V by LED) at 200 mA

* High frequency Dimming PWM Control

* Maximum Vout of 20 V

* 1.7 MHz PWM DC/DC Converter

* Shut Down Control Facility with True

* Cutoff

* Open LED (Output Overvoltage) Protecti