UNISONIC TECHNOLOGIES CO., LTD
LD1596
Preliminary
2A, 150kHz, 40V BUCK DC/DC CONVERTER WITH LED DRIVER AND BATTERY CH...
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
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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...