MIC2124 - Micrel Semiconductor

MIC2124 Synchronous Current Mode Buck Controller

The Micrel MIC2124 is a member of the Hyper Speed Contro™l family of DC-DC controllers. It uses an adaptive on-time current mode control scheme and operates at a constant frequency. The MIC2124 operates over a supply range of +3V to +18V, and is independent of the IC supply voltage VIN. It operates at a fixed 300kHz switching frequency and can be used to pro.

Features

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• +3V to +18V input voltage 25A output current capability TM Any Capacitor stable - Zero ESR to high ESR Output down to 0.8V with ±1% FB accuracy Up to 94% efficiency 300kHz switching frequency All N-Channel MOSFET design Shutdown feature with EN/COMP No current-sense resistor needed Internal 4ms digital soft-start Thermal shutdown Pre-bias output safe Cycle-by-Cycle foldback current-limit protection 10-pin MSOP package
  –40ºC to +125ºC junction temperature range Applications
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• Printers and scanners Graphic and video cards PCs and servers Microprocessor .