Introduction
This document describes the CAT4237EVAL2
Evaluation Board for the Catalyst Semiconductor CAT4237
white LED driver. The functionality and major parameters
of the CAT4237 can be evaluated with the CAT4237EVAL2
board.
The CAT4237 is a high voltage CMOS constant−current
DC/DC converter that has been designed to drive with high
efficiency white or other high brightness LEDs. The
high−voltage output stage allows driving up to 8 white LEDs
in series. A single external resistor sets the LED current
between 5 mA and 30 mA. LED current can be adjusted
using either a pulse width modulated (PWM) signal or a DC
voltage. Detailed descriptions and electrical characteristics
are in the CAT4237 data sheet.