Step-down DC/DC converters yield output voltage up to 15V

Article By : Susan Nordyk

The XC9263 and XC9264 series devices from Torex tout an internal high-side/low-side driver transistor, input voltage range of 3V to 18V, and output voltage from 1V to 15V, accurate to within ±1.5

Torex Semiconductor has introduced the XC9263 and XC9264 series of synchronous step-down DC/DC converters engineered for industrial equipment and large household appliances. Offering 500mA of output current, the devices incorporate an internal high-side/low-side driver transistor, have an input voltage range of 3V to 18V, and boast output voltage ranges from 1V to 15V, accurate to within ±1.5%, detailed the company.

[XC9263 and XC9264 series]

The XC9263 series offers PWM control, while the XC9264 series automatically switches between PWM and PFM modes based on the output current requirement. Converters achieve efficiency of 85% or higher at IOUT of 1mA. Switching frequencies of 500kHz, 1.2MHz or 2.2MHz are available to match application requirements. A soft-start function is set internally at 1ms (typical). It can also be adjusted by using an external resistor and capacitor.

Other device features include overcurrent limiting, short-circuit protection, undervoltage lockout, auto reset, thermal shutdown, and a power-good function. Both the XC9263 and XC9264 series offer a choice of SOT-25 and USP-6C packages.

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