The MIC4604 is an 85V Half Bridge MOSFET driver. The MIC4604 features fast 39ns propagation delay times and 20ns driver rise/fall times for a 1nF capacitive load. The low-side and high-side gate drivers are independently controlled. The MIC4604 has TTL input thresholds. It includes a high-voltage internal diode that helps charge the high-side gate drive bootstrap capacitor.A robust, high-speed, and low-power level shifter provides clean level transitions to the high-side output. The robust operation of the MIC4604 ensures that the outputs are not affected by supply glitches, HS ringing below ground, or HS slewing with high-speed voltage transitions. Undervoltage protection is provided on both the low-side and high-side drivers.The MIC4604 is available in an 8-pin SOIC package and a tiny 10-pin 2.5mm × 2.5mm TDFN package. Both packages have an operating junction temperature range of –40°C to +125°C.

  5.5V to 16V gate drive supply voltage range

  Drives high-side and low-side N-Channel MOSFETs with independent inputs

  TTL input thresholds

  On chip bootstrap diode

  Fast 39ns propagation times

  Drives 1000pF load with 20ns rise and fall times

  Low power consumption

  Supplies undervoltage protection

  –40°C to +125°C junction temperature range