StepUp/Down-DC/DC Converter
:GeneraL Description
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 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 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 μA
TTL shutdown capability
Excellent line and load regulation
Requires only 4 external components
High efficiency
Thermal shutdown and
current limit protection
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