Analog Devices Inc. LTC4444 Synchronous N-Channel MOSFET Driver
Analog Devices LTC4444 Synchronous N-Channel MOSFET Driver is a high-frequency, high-voltage gate driver that drives two N-channel MOSFETs in a synchronous DC-DC converter, with supply voltages up to 100V. This powerful driver reduces switching losses in MOSFETs with high gate capacitance. The LTC4444 is configured for two supply-independent inputs. The high-side input logic signal is internally level-shifted to the bootstrapped supply, which may function at up to 114V above ground.
The LTC4444 contains undervoltage lockout circuits that disable the external MOSFETs when activated. Adaptive shoot-through protection prevents both MOSFETs from conducting simultaneously.
The LTC4444 is offered in a thermally-enhanced 8-lead MSOP package, and is AEC-Q100 qualified for automotive applications.
Features
- AEC-Q100 Qualified for automotive applications
- Bootstrap supply voltage to 114V
- 7.2V to 13.5V Wide VCC voltage
- Adaptive shoot-through protection
- 2.5A Peak TG pull-up current
- 3A Peak BG pull-up current
- 1.2Ω TG Driver pull-down
- 0.55Ω BG Driver pull-down
- 5ns TG Fall time driving 1nF load
- 8ns TG Rise time driving 1nF load
- 3ns BG Fall time driving 1nF load
- 6ns BG Rise time driving 1nF load
- Drives both high and low-side N-channel MOSFETs
- Undervoltage lockout
- Thermally enhanced 8-Lead MSOP package
Applications
- Distributed power architectures
- Automotive power supplies
- High density power modules
- Telecommunications
Application Circuit
Pin Configuration
