R2104 IC Explorer : High- and low-side MOSFET/IGBT gate driver
Explore the IR2104 DIP-8 pinout, key specifications, and typical half-bridge gate-driver applications.
Click a pin in the explorer to see its specifications.
About the IR2104
The IR2104 is a high-voltage half-bridge gate-driver IC designed to drive one high-side and one low-side MOSFET or IGBT. Its HO output drives the high-side switch relative to the floating VS pin, while LO drives the low-side switch relative to COM.
The IR2104 uses a logic input (IN) and shutdown input (SD). It includes internal dead-time behavior and undervoltage lockout. It is a gate driver—not a complete motor controller, inverter, or power supply. Consult the current manufacturer datasheet for the truth table, limits, and design details for your exact package and suffix.
IR2104 Specifications
| Parameter | Summary |
|---|---|
| Device function | High- and low-side MOSFET/IGBT gate driver |
| Outputs | HO (floating high-side output) and LO (low-side output) |
| Logic inputs | IN and SD |
| Driver supply (VCC) | Typically operated within 10–20 V; confirm conditions and limits in the datasheet |
| High-side offset rating | Up to 600 V, subject to datasheet conditions; this is not the gate-drive supply voltage |
| Package shown | DIP-8 configuration; confirm the suffix and package of the device you have |
| Protection and timing | Undervoltage lockout and internal dead-time behavior |
Electrical limits and switching performance depend on operating conditions. Do not treat the IC Explorer visualization as a substitute for the manufacturer datasheet.
IR2104 Applications
- Half-bridge MOSFET or IGBT power stages
- Switching DC–DC converter stages
- Motor-drive power stages when used with a suitable control circuit
- Inverter legs and other half-bridge switching circuits
Typical high-side operation uses a bootstrap diode and capacitor between the driver supply and floating supply pins. Component selection, gate resistance, decoupling, layout, and switch timing must follow the datasheet and the requirements of the power stage.
Safety: Half-bridge circuits may contain dangerous voltages and high fault currents. Use appropriate isolation, current limiting, rated components, and safe test procedures. The 600 V offset rating is not permission to handle or test an energized high-voltage circuit without suitable expertise and equipment.