When combined with two external FETs, the MIC2182 synchronous buck switching control IC provides output currents up to 20A, making it suitable for telecomm applications. With an all-N-channel synchronous architecture, the device automatically transitions between two operating modes: PWM mode for high currents; and skip mode for lower power levels. This capability allows for a 95% efficiency over a wide range of loads. Other features include a 4.5V to 28V input- voltage range, a 300-kHz switching frequency that's externally synchronizable to 600 kHz, and an operating temperature range of from -40°C to +125°C.
Company: MICREL SEMICONDUCTOR INC.
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