Linear debuts high-rel MOSFET gate driver

Milpitas, Calif. — Linear Technology Corp. has introduced a high reliability (MP-grade) version of the LTC4441, a 6A N-channel MOSFET gate driver that operates over a -55°C to125°C operating junction temperature range. This high-power driver is designed to increase the output power and efficiency of a DC/DC controller, enabling it to drive high power N-channel MOSFETs or multiple MOSFETs in parallel.

With a wide input supply range from 5V to 25V, the LTC4441 provides a simplified solution for increasing the output power capability of power supplies in telecom, industrial systems and motor control applications, said Linear Tech.
The LTC4441 includes an easily adjustable 5-V to 8-V onboard linear regulator for its gate drive voltage and IC power. The propagation delay when driving a 4.7 nF capacitance with 7.5-V drive voltage is only 30 ns, said Linear. Adjustable blanking prevents ringing when sensing the source current in the power MOSFETs.

The LTC4441 provides a TTL/CMOS-compatible input that can be driven below ground or above the driver supply. Other protection features include under-voltage lockout and over-temperature circuits, which disable the driver output when activated.

The LTC4441 is packaged in a thermally enhanced 10-lead MSOP.

Pricing: Starts at $5.45 each in quantities of 1,000.