EC2596 – 3A 150KHz PWM Buck DC/DC Converter
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.
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
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
Typical Applications circuit