4A, 20ns, MOSFET Driver

4A, 20ns MOSFET Driver in 3mm x 3mm TDFN Power Package for Ultra-Compact, High-Frequency Power Supplies

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The MAX5078A/MAX5078B high-speed MOSFET drivers source and sink up to 4A peak current. These devices feature a fast 20ns propagation delay and 20ns rise and fall times while driving a 5000pF capacitive load. Propagation delay time is minimized and matched between the inverting and noninverting inputs. High sourcing/sinking peak currents, low propagation delay, and thermally enhanced packages make the MAX5078A/MAX5078B ideal for high-frequency and high-power circuits.

The MAX5078A/MAX5078B operate from a 4V to 15V single power supply and consume 40µA (typ) of supply current when not switching. These devices have an internal logic circuitry that prevents shoot-through during output state changes to minimize the operating current at a high switching frequency. The logic inputs are protected against voltage spikes up to +18V, regardless of the VDD voltage. The MAX5078A has CMOS input logic levels while the MAX5078B has TTL-compatible input logic levels.

The MAX5078A/MAX5078B feature both inverting and noninverting inputs for greater flexibility in controlling the MOSFET. They are available in a 6-pin TDFN (3mm x 3mm) package and operate over the automotive temperature range of -40°C to +125°C.

MAX5078: Typical Operating Circuit MAX5078: Typical Operating Circuit Enlarge+

Key Features

  • 4V to 15V Single Power Supply
  • 4A Peak Source/Sink Drive Current
  • 20ns (typ) Propagation Delay
  • Matching Delay Between Inverting and Noninverting Inputs
  • VDD/2 CMOS (MAX5078A)/TTL (MAX5078B) Logic Inputs
  • 0.1 x VDD (CMOS) and 0.3V (TTL) Logic-Input Hysteresis
  • Up to +18V Logic Inputs (Regardless of VDD Voltage)
  • Low Input Capacitance: 2.5pF (typ)
  • 40µA (typ) Quiescent Current
  • -40°C to +125°C Operating Temperature Range
  • 6-Pin TDFN Package


  • DC-DC Converters
  • Motor Control
  • Power MOSFET Switching
  • Power-Supply Modules
  • Switch-Mode Power Supplies
Product Reliability Reports: MAX5078.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

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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