100-V synchronous N-channel MOSFET drivers operate from -40 to 150 degrees C
The driver, combined with power MOSFETs and one of Linear Technology’s many DC/DC controllers, forms a complete high efficiency synchronous regulator. The LTC4444H/-5 operates over a junction temperature range of -40 to 150°C, compared to the I-grade version’s -40 to 125°C operating temperature range.
Adaptive shoot-through protection is integrated to minimize dead time while preventing both the upper and lower MOSFETs from conducting simultaneously. These powerful drivers can source up to 1.4 A with a 1.5 Ohm pull-down impedance for driving the top MOSFET and a source current of 1.75 A with a 0.75 Ohm pull-down impedance for the bottom MOSFET, making it ideal for driving high gate capacitance, high current MOSFETs. The LTC4444H/-5 can drive multiple MOSFETs in parallel for higher current applications. Switching losses are minimized by the fast 8 ns rise, 5ns fall time of the top MOSFET and 6 ns rise, 3 ns fall time of the bottom MOSFET when driving a 1,000 pF load.
The LTC4444H/-5 is configured for two supply independent inputs. The high-side input logic signal is internally level-shifted to the bootstrap supply, which can function at up to 114 V above ground. The LTC4444-5 drives both upper and lower MOSFET gates over a range of 4.5 V to 13.5 V and the LTC4444 drives both upper and lower MOSFET gates over a range of 7.2 V to 13 V.
Availability and Pricing
Both parts are available in a thermally enhanced MSOP-8 package. Pricing starts at $2.00 each in 1,000-piece quantities.
More information about the LTC4444/-5 synchronous MOSFET gate driver at
- PSU MOSFET driver boosts functional robustness, with low power loss
- Automotive battery stack monitor achieves 0.04% measurement accuracy
- 500 mA, 140V Boost/SEPIC/Flyback/Inverting DC/DC: IQ = 6µA
- Digi-Key’s pushes IDT’s wireless power reference kits through hackster
- Harsh-environment high input voltage, high output current linear regulator
- 38V dual PMBus DC/DC controller with current mode control
- ST takes super-junction power MOSFETs to 1500V rating
- Lowest-drift bandgap voltage reference reaches 1.5ppm/°C, offers low dropout
- Improving reliability and lowering audible noise on LED drivers
- Is ethylene carbonate the key to extending battery life?
- 600V power MOSFETs with integrated high speed diodes
- R&D centre investigates flow cell applications
- A new measure for wireless power transfer to support highly efficient links
- Can candle soot help power Electric Vehicles?
- Integrated 7.8 mΩ power switch handles 9A, with reverse-blocking
- Internet blackouts by 2020, warns nanoelectronics book
- Huawei reveals rapid charge batteries: 50% capacity charged in minutes
- Want longer lasting lithium ion batteries? Just add hydrogen
- Will solar cells power a Li-FI revolution?
- 48V system achieves near full-hybrid characteristics
- Tandem thin film solar cells add perovskite to boost efficiency
- Perovskite advance targets long-wavelength sunlight to boost solar cell efficiency
- Universal wireless charger meets multiple standards
- London black cabs begin journey towards battery power
- IDT to acquire ZMDI for $310million
- PoWiFi optimizes energy harvesting to power IoT sensors
- A4WP and PMA combine for create AirFuel Alliance
- Sub-threshold logic MCU maker claims low-power benchmark lead
- Reducing data centre energy consumption on three levels
- Harvest more energy from photons to improve solar cells and li-fi
- Battery Size Matters
- Isolation in AC Motor Drives: Understanding the IEC 61800-5-1 Safety Standard
- Multichemistry Buck Battery Charger Controller
- Why Making the Move from a Variable Transformer to a VariPLUS is the Right Decision
- Determine Balancing Current for the LTC3305 Lead-Acid Battery Balancer
- Testing PSRR with High-Frequency Ripple
- A SEPIC Fed Buck Converter