700V 155mΩ GaN FET with integrated driver, protection and current sensing

The LMG3624 is a 700V 155mΩ GaN power FET intended for

switch-mode power-supply applications. The LMG3624 simplifies design and

reduces component count by integrating the GaN FET and gate driver in a 8mm × 5.3mm VQFN

package.

Programmable turn-on

slew rates provide EMI and ringing control. The current-sense

emulation reduces power dissipation compared to

the traditional current-sense resistor and allows

the low-side thermal pad to be connected to the

cooling PCB power ground.

The LMG3624 supports converter

light-load efficiency requirements and burst-mode operation

with low quiescent currents and fast start-up times.

Protection features include under-voltage lockout (UVLO), cycle-by-cycle

current limit, and

overtemperature protection. Overtemperature

protection is reported with the open-drain

FLT pin.