TD1507T5 IC

The TD1507 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 ?A 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 TD1507 is availablein TO252-5L packages.

:Features

• 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, I

• typically 80 ?A

• TTL shutdown capability

• Excellent line and load regulation

• Requires only 4 external components

• High efficiency

• Thermal shutdown and

• current limit protection