General Description

The TD1602 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 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 TD1602 is available in TO-263-5L packages.

Features

 5V and adjustable output versions

 Output adjustable from 1.23v to 57V

 Fixed 52KHz frequency internal oscillator

 Guaranteed 3A output load current

 Input voltage range up to 60V

 TTL shutdown capability

 Excellent line and load regulation

 High efficiency

 Thermal shutdown and current limit protection

 Available in TO-263 packages

Applications

 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