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

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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.
MAX15492: Block Diagram MAX15492: Block Diagram Enlarge+

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 (MAX15492)
    • 3V to 5.5V Bias Supply Range (MAX15492B)
  • Integrated Boost Switch Saves Space and Cost


  • Intel® Ultrabook™/Notebook Computers
  • Multiphase DC-DC Converters
  • Tablet Computers

See parametric specs for MOSFET Drivers (35)

Part NumberNo. of DriversLogic PolarityConfig.IOUT
Package/PinsOper. Temp.
MAX15492 2
High-Side N Drive
Low-Side N Drive
-40 to +85
0 to +70

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
Request Reliability Report for: MAX15492 
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Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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