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General Description

The MIC4605 is an 85V half-bridge MOSFET driver

that features adaptive dead time and shoot-through

protection. The adaptive dead-time circuitry actively

monitors the half-bridge outputs to minimize the time

between high-side and low-side MOSFET transitions,

thus maximizing power efficiency. Shoot-through

protection circuitry prevents erroneous inputs and noise

from turning both MOSFETS on at the same time.

The MIC4605 also offers a wide 5.5V to 16V operating

supply range to maximize system efficiency. The low

5.5V operating voltage allows longer run times in

battery-powered applications. Additionally, the MIC4605

device¡¯s adjustable gate drive sets the gate drive voltage

to VDD for optimal MOSFET RDS(ON), which minimizes

power loss due to the MOSFET¡¯s RDS(ON).

The MIC4605 is available in an 8-pin SOIC package

and a tiny 10-pin 2.5 mm x 2.5 mm TDFN package.

Both packages have an operating junction temperature

range of -40¡ãC to +125¡ãC.

Features

? 5.5V to 16V Gate Drive Supply Voltage Range

? Advanced Adaptive Dead Time

? Intelligent Shoot-Through Protection:

- MIC4605-1: Dual TTL inputs

- MIC4605-2: Single PWM input

? Enable Input for On/Off Control

? On-Chip Bootstrap Diode

? Fast 35 ns Propagation Times

? Drives 1000 pF Load with 20 ns Rise and

Fall Times

? Low-Power Consumption: 135 ¦ÌA Quiescent

Current

? Separate High-Side and Low-Side Undervoltage

Protection

? -40¡ãC to +125¡ãC Junction Temperature Range

? AEC-Q100 Qualified for the SOIC Package

Applications

? Fans

? Power Inverters

? High-Voltage Step-Down Regulators

? Half, Full and 3-Phase Bridge Motor Drives

? Appliances

? E-Bikes

? Automotive Applications