Switching Regulators

900 kHz Step-down Regulator Improves Efficiency and Reduces Space

Overview

The BD9870’s integrated protection and compensation circuitry, smaller external components and ceramic input/output capacitor compatibility result in space savings of up to 60%.

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Features

• 900kHz oscillation frequency reduces external coil size (10µH).
• Compatible with ceramic capacitors at output LC filter.
• Built-in Pch MOSFET (diode rectification).
• Only 3 external components required: coil, diode, output capacitor (no feedback compensation).
• Integrated Overcurrent Protection (OCP) and Thermal Shutdown (TSD) circuits.

Applications

• TVs
• Printers
• Gaming consoles
• Car audio and navigation
• Communication devices
• A/V equipment
• Office and industrial equipment