1 Features
• Drives two N-channel MOSFETs in half-bridge
configuration
• 8-V typical undervoltage lockout on GVDD
• 107-V absolute maximum voltage on BST
• –19.5-V absolute maximum negative transient
voltage handling on SH
• 0.5-A/0.8-A peak source/sink currents
• 475-ns typical fixed internal dead-time
• Built-in cross conduction prevention
• 115-ns typical propagation delay
• Shutdown logic input pin SD
• Single input pin IN

2 Applications
• Brushless-DC (BLDC) motors
• Permanent magnet synchronous motors (PMSM)
• Servo and stepper motor drives
• Cordless vacuum cleaners
• Cordless garden and power tools
• E-bikes and e-scooters
• Battery test equipment
• Offline uninterruptible power supply (UPS)
• General-purpose MOSFET or IGBT driver

3 Description
The LM2104 is a compact, high-voltage gate driver
designed to drive both the high-side and the low-side
N-channel MOSFETs in a synchronous buck or a halfbridge
configuration. The IN pin allows the device to
be used in single PWM input applications, and the SD
pin allows the controller to disable the driver's outputs
by turning them off when the SD pin is low, regardless
of the IN pin state.
The fixed dead-time and the –1-V DC and –19.5-
V transient negative voltage handling on the SH
pin improve the system robustness in high noise
applications. The LM2104 is available in an 8-pin
SOIC package compatible with industry standard
pinouts. Undervoltage lockout (UVLO) is provided on
both the low-side and the high-side power rails for
protection during power up and power down.