NCP5030 Datasheet (ON Semiconductor)

NCP5030, Buck Boost Converter

Pin Name Type Description 1 FB INPUT Feedback: Reference voltage is 200 mV.

The cathode of the LED and a resistor to ground to set the LED current should be connected at this point.

A "5% metal film resistor, or better, is recommended for best output accuracy.

An analog signal can be applie

NCP5030 Buck-Boost Converter to Drive a Single LED from 1 Li-Ion or 3 Alkaline Batteries The NCP5030 is a fixed frequency PWM buck boost converter optimized for constant current applications such as driving high powered white LED.

The buck boost is implemented in an H bridge topology and has an adaptive architecture where it operates in one of three modes: boost, buck boost, or buck depending on the input and output voltage condition.

This device has been

NCP5030 Features

* Efficiency: 87% at 500 mA and 3.3 V VIN

* Internal Synchronous Rectifier, No Schottky Diodes

* Adjustable Switching Limit Current to Optimize inductor size

* 0.3 mA Shut

* down Control with “True

* Cut off”

* Input Voltage Range from 2.7 V to 5.5