EC2596 – 3A 150KHz PWM Buck DC/DC Converter

EC2596 – 3A 150KHz PWM Buck DC/DC Converter
General description
The EC2596 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 EC2596 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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