Littelfuse/IXYS LF21844NTR

LF21844N is a high voltage, high speed gate driver capable of driving N-channel MOSFETs and IGBTs in a half bridge configuration. The high voltage technology enables the LF21844N’s high side to switch to 600V in a bootstrap operation. The LF21844N logic inputs are compatible with standard TTL and CMOS levels (down to 3.3V) to interface easily with controlling devices. The driver outputs feature high pulse current buffers designed for minimum driver cross conduction. Programmable dead time, by an external resistor, provides more system level flexibility. The LF21844N is offered in SOIC(N)-14 package. It operates over the extended temperature range of -40 °C to +125 °C.

• Floating high-side driver in bootstrap operation to 600V
• Drives two N-channel MOSFETs or IGBTs in a half bridge configuration
• 1.4A source / 1.7A sink output current capability
• Outputs tolerant to negative transients
• Programmable dead time to protect MOSFETs
• Wide low-side gate driver supply voltage: 10V to 20V
• Wide logic supply voltage offset voltage: -5V to 5V
• Logic input (IN and SD*) 3.3V capability
• Schmitt triggered logic inputs with internal pull up and pull down
• Under Voltage Lockout (UVLO) for high-side and low side drivers
• Extended temperature range: -40 °C to +125 °C

• DC-DC Converters
• AC-DC Inverters
• Motor Controls
• Class D Power Amplifiers