描述 Description

The TD1501 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 TD1501 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