Step-down buck DC/DC converter drives 1-A load with no external transistor
The APE1723-HF-3 can drive a 1 A load without an external transistor, saving board real estate. Additionally, the APE1723-HF-3 operates at a fixed switching frequency of 200 kHz, enabling simpler filter components to be used in a design.
The external shutdown function of the APE1723-HF-3 is controlled with logic level signals, putting the device into its low-power standby mode. A further feature is internal compensation which provides feedback control for excellent line and load regulation, again without the need for additional external components. The device features thermal shutdown for protection against damage in the event of over-temperature operation and has current limit protection and short circuit protection to safeguard the output switch. Output voltage tolerance is guaranteed at ±3% under specified input voltage and output load conditions.
The APE1723-HF-3 is RoHS-compliant and BFR/halogen-free to meet current REACH environmental requirements. The device is available in either an SO-8 or a 5-lead SOT-23 package.
More information about the APE1723-HF-3 PWM buck DC/DC convertor at
www.a-powerusa.com/docs/APE1723-3.pdf
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