Single low-side driver with a 5V to 40V supply range
The Texas Instruments UC2705D is a single-channel low-side gate driver designed for N-channel MOSFETs in an 8-SOIC surface-mount package. Its 5V to 40V supply range covers common power-rail voltages from 5V logic supplies up to 36V industrial buses, so a single BOM line can serve multiple rail voltages across a product family. The 1.5A peak source and sink current handles the gate charge of medium-power MOSFETs without an external buffer — think DC-DC converters, motor-drive pre-drive stages, and general-purpose low-side switching up to a few hundred kHz.
60 ns rise/fall — what it buys the switching loop
The 60 ns typical rise and fall times at the 1.5A peak rating mean the driver can charge and discharge the MOSFET gate capacitance quickly, reducing switching losses in the transition region. For a design targeting 200–500 kHz switching frequency, that 60 ns edge keeps the dead-time budget tight. The symmetric source and sink current also simplifies the gate drive layout — no need to size separate turn-on and turn-off resistors unless you are shaping EMI.
Inverting and non-inverting inputs on one channel
The UC2705D offers both inverting and non-inverting input pins for the single output. This lets the designer match the PWM controller's output polarity without an external inverter gate — useful when swapping between controllers with active-high or active-low enable logic. The logic thresholds are 0.8V for VIL and 2.2V for VIH, compatible with 3.3V and 5V logic families directly.
Temperature grade and environment
Rated for -25°C to 85°C ambient, this is an industrial-temperature part suited for factory-floor equipment, power supplies, and telecom line cards that see moderate thermal cycling. It is not specified for the -40°C cold start or +125°C under-hood automotive environment — if the design needs that extended range, look at the -40°C to 125°C variants in the same family.
Lifecycle and sourcing
The UC2705D is listed as Active and ROHS3 compliant. For a BOM line that needs multi-year production support, this part carries no near-term obsolescence risk.