LD1596

UNISONIC TECHNOLOGIES CO., LTD LD1596 Preliminary 2A, 150kHz, 40V BUCK DC/DC CONVERTER WITH LED DRIVER AND BATTERY CHARGE  DESCRIPTION The UTC LD1596 is a 150KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 2A load with high efficiency. The PWM control circuit is able to adjust the duty ratio linearly from 0~100%. An enable function, an over current protection function is built inside. An internal compensation block is built in to minimize external component count.  FEATURES * Wide 4.5V~40V Input Voltage Range * Output Adjustable from 1.235V~37V * Minimum Drop Out 1.5V * Fixed 150kHz Switching Frequency * 2A Constant Output Current Capability * Internal Optimize Power Transistor * Excellent line and load regulation * TTL shutdown capability * ON/OFF pin with hysteresis function  ORDERING INFORMATION Ordering Number Lead Free Halogen Free LD1596L-S08-R LD1596G-S08-R LD1596L-SH2-R LD1596G-SH2-R Package SOP-8 HSOP-8 CMOS IC SOP-8 HSOP-8 Packing Tape Reel Tape Reel  MARKING www.unisonic.com.tw Copyright © 2017 Unisonic Technologies Co., Ltd 1 of 5 QW-R502-A36.c LD1596  PIN CONFIGURATION Preliminary CMOS IC  PIN DESCRIPTION PIN NO. 1, 2 3 4 5 6 7, 8 PIN NAME SW GND FB CS EN VIN Power Switch Pin (SW). Ground Pin. Output control Pin Output Current Sense Pin Enable Pin. Supply Voltage Input Pin. DESCRIPTION  BLOCK DIAGRAM EN 1.23V Reference VREF Start Up Current Limit OCP + CS + - EA - FB - COMP + Latch Driver...