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  • TD1509

  • TD1509  2A 150KHz 45V PWM Buck DC/DC Converter

    (DATASHEET)


    The TD1509 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 2A 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 TD1509 is available in SOP8/DIP8 packages.

     

    Features

    * 3.3V, 5V and adjustable output versions

    * Output adjustable from 1.23v to 43V

    * Fixed 150KHz frequency internal oscillator

    * Guaranteed 2A 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 SOP8/DIP8 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

     

    Typical Application Circuit

     

    AMERICA TECHCODE SEMICONDUCTOR, INC.

 
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