描述 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.

特性 Features

? 3.3V,5V and adjustable output Versions
? Output adjustable from 1.23V to 43V
? Fixed 150KHz frequency internal oscillator
? Guaranteed 3A output load current
? Input voltage range up to 45V
? Low power standby mode, IQ typically 80 μA
? TTL shutdown capability
? Excellent line and load regulation
? Requires only 4 external components
? High efficiency
? Thermal shutdown and current limit protection
? Available in TO-220B/TO220 and TO-263 packages

應(yīng)用 Application

? Simple High-efficiency step-down regulator
? On-card switching regulators
? Positive to negative converter
? LCD monitor and LCD TV
? DVD recorder and PDP TV
? Battery charger
? Step-down to 3.3V for microprocessors