EC2596中文资料3A 150KHz PWM Buck DC/DC Converter数据手册E-CMOS规格书

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

应用 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