XL3002 Datasheet | XLSEMI

Features n n n n n n n n n n n n n Wide 5V to 32V Input Voltage Range Output Current Sense Voltage is 0.24V Minimum Drop Out 0.3V Fixed 260KHz Switching Frequency 1.5A Constant Output Current Capability Internal Optimize Power MOSFET Excellent line and load regulation High efficiency up to 96% TTL shutdown capability EN pin with hysteresis function Built in thermal shutdown function Built in current limit function SOIC-8 package General Description The XL3002 is a 260 KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 1.5A load with high efficiency, low ripple and excellent line and load regulation. Requiring a minimum number of external ponents, the regulator is simple to use and include internal frequency pensation and a fixed-frequency oscillator. The PWM control circuit is able to adjust the duty ratio linearly from 0 to 100%. An enable function, an over current protection function is built inside. An internal pensation block is built in to minimize external ponent count. Applications n n MR16 LED Lamp LED Lighting Figure1. Package Type of XL3002 Rev 2.0 1 .xlsemi. Free Datasheet http://.. Preliminary Datasheet 1.5A 260KHz 32V Buck LED Constant Current Driver Pin Configurations XL3002 Figure2. Pin Configuration of XL3002 (Top View) Table 1 Pin Description Pin Number 1 2 3 4 5,6 7,8 Pin Name CS EN NC VIN SW GND Description Output constant current sense Pin (CS). The CS reference voltage is 0.24V. Enable Pin. Drive EN pin low to turn off the device, drive it high to turn it on. Floating is default high. No connected. Supply Voltage Input Pin. XL3002 operates from a 5V to 32V DC voltage. Power Switch Output Pin (SW). Output is the switch node that supplies power to the output. Ground Pin. Function Block Figure3. Function Block Diagram of XL3002 Rev 2.0 2 .xlsemi. Free Datasheet http://.. Preliminary Datasheet 1.5A 260KHz 32V Buck LED Constant Current Driver Typical Application Circuit (MR16 LED Lamp) XL3002 Figure4....