XL1530降压芯片3A18V

3A 380KHz 18V Buck DC to DC Converter XL1530

Features

Wide 3.6V to 18V Input Voltage Range Output Adjustable from 0.8V to 16V

Maximum Duty Cycle 100% Minimum Drop Out 0.6V

Fixed 380KHz Switching Frequency 3A Constant Output Current Capability Internal Optimize Power MOSFET High e fficiency

Excellent line and load regulation TTL shutdown capability

EN pin with hysteresis function Built in thermal shutdown function Built in current limit function

Built in output short protection function Available in SOP8 package

Applications

LCD Monitor and LCD TV Digital Photo Frame Set-up Box ADSL Modem

Telecom / Networking Equipment

General Description

The XL1530 is a 380KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 3A load with high efficiency, low ripple and excellent line and load regulation. Requiring a minimum number of external components, the regulator is simple to use and include internal frequency compensation 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. When short protection function happens, the operation frequency will be reduced from 380KHz to 80KHz. An internal compensation block is built in to minimize external component count.

Figure1. Package Type of XL1530

3A 380KHz 18V Buck DC to DC Converter XL1530

Figure4. XL1530 Typical Application Circuit3A 380KHz 18V Buck DC to DC Converter XL1530

3A 380KHz 18V Buck DC to DC Converter XL1530

℃;3A 380KHz 18V Buck DC to DC Converter XL1530

Figure5. Standard Test Circuits and Layout Guides

Select R1 to be approximately 2K, use a 1% resistor for best stability.

C1 and CFF are optional; in order to increase stability and reduce the input power line noise, CIN and C1 must be placed near to VIN and GND;

For output voltages greater than approximately 10V

3A 380KHz 18V Buck DC to DC Converter XL1530

3A 380KHz 18V Buck DC to DC Converter XL1530

3A 380KHz 18V Buck DC to DC Converter

XL1530

Package Information

SOP8 Package Mechanical Dimensions