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MAX15492：Single-Phase Synchronous MOSFET Driver with Ultra-Low-Power Mode

Single-Phase Synchronous Buck MOSFET Driver with Ultra-Low-Power Mode in 2mm x 2mm Package

The MAX15492 is a synchronous half-bridge driver with ultra-low-power mode. The device is intended to work with controller ICs such as the MAX15411, MAX15566/MAX15567, or MAX15576/MAX15577 in multiphase CPU core regulators. To provide the best light-load efficiency, the controller can place the device into an ultra-low power mode where the supply current is only 4µA. The low-side driver is optimized to drive 3nF capacitive loads with 3ns/7ns typical fall/rise times, and the high-side driver with 7ns/14ns typical fall/rise times. Adaptive dead-time control prevents shoot-through currents and maximizes converter efficiency. The MAX15492 is available in a small, 8-pin (2mm × 2mm) TDFN package with an exposed pad.

Key Features Extends Battery Life Ultra-Low-Power Mode with 4µA Supply Current 2V to 24V Input Voltage Range Selectable Pulse-Skipping Mode 7ns Minimum Guaranteed Dead-Time Allows Operation Up to 3MHz per Phase 0.7Ω Low-Side On-Resistance 1.5Ω High-Side On-Resistance 12ns Propagation Delay 4.2V to 5.5V Bias Supply Range Integrated Boost Switch Saves Space and Cost

MAX15492: Block Diagram Applications/Uses Intel® Ultrabook™/Notebook Computers Multiphase DC-DC Converters Tablet Computers

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