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EC9301A - 3A 150KHz PWM Buck DC/DC Converter

General description

 The  EC9301A  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 3.3V, 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  EC9301A  is  available  in  TO-220B-5L  ,TO220-5L and TO-263-5L packages.
 

Features

 

l   3.3V,5V and adjustable output Versions

l   Output adjustable from 1.23V to 43V

l   Fixed 150KHz frequency internal oscillator

l   Guaranteed 3A output load current

l   Input voltage range up to 45V

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 TO-220B/TO220 and TO-263 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

 

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