VOM1271T Photovoltaic MOSFET Driver with Integrated Turn-Off (SOP-4)

Safely drive high-power loads and protect your sensitive microcontrollers with the VOM1271T isolated photovoltaic MOSFET driver. When building custom payload release mechanisms, high-power LED arrays, or heavy-duty motor switches for your drones and robotics, protecting the logic circuit from high-voltage spikes is critical. This optical isolator bridges the gap between your low-power Flight Controller (or Arduino/ESP32) and high-current MOSFETs, providing true galvanic isolation.

What makes the VOM1271T truly special is its photovoltaic output. By simply driving the internal LED with a standard logic signal, the chip generates its own floating voltage (typically ~8.4V) to fully open a heavy-duty N-channel MOSFET—no separate power supply is needed on the output side! Furthermore, it features a built-in active turn-off circuit that rapidly discharges the MOSFET gate, ensuring fast and crisp switching without the need for external bleed resistors. Housed in a tiny SOP-4 package, it is the ultimate space-saving solution for solid-state relays and custom power switching boards.

Key Features:

• True Optical Isolation: Provides robust galvanic isolation, completely separating the low-voltage logic side from the high-power load side to prevent catastrophic MCU damage.

• Photovoltaic Operation: Generates its own gate-drive voltage from the optical signal, eliminating the need for an isolated high-side power supply.

• Integrated Turn-Off Circuit: Actively and rapidly discharges the MOSFET gate for fast switching times, preventing thermal buildup in the transistor.

• Microcontroller Friendly: Easily driven directly by 3.3V or 5V logic pins with a simple current-limiting resistor.

Specifications:

• Part Number: VOM1271T

• IC Type: Photovoltaic MOSFET Driver / Optocoupler

• Typical Output Voltage: 8.4V (Gate Drive)

• Isolation Test Voltage: 3750 VRMS

• Features: Built-in active turn-off circuitry

• Package Type: SOP-4 (SMD/SMT)