Texas Instruments UC3707N

Overview

UC3707N from Texas Instruments is a dual-channel high-speed power MOSFET driver IC designed for interfacing low-level logic with high-power switching devices. It delivers ±1.5 A peak output current per channel, operates from 5 V to 40 V supply rails (VIN and VC independently), and features independent inverting/non-inverting inputs, analog/digital shutdown with optional latch, and thermal shutdown protection - used in DC-DC converters and motor gate drive circuits.

For engineers reviewing the UC3707N datasheet, UC3707N pinout, UC3707N application, or UC3707N equivalent, key selection considerations include its 16-pin PDIP package, –55°C to +125°C military-grade temperature range (per UC1707/UC3707 family specification alignment), dual-channel independent control, and compatibility with power MOSFETs requiring fast 40 ns rise/fall times into 1000 pF loads.

Technical Context

The UC3707N implements two independent totem-pole output stages built on a high-speed Schottky process, each capable of sourcing or sinking up to 1.5 A transient current. Its input stage accepts both inverting and non-inverting logic signals per channel, enabling flexible PWM or complementary drive configurations.

Shutdown functionality integrates analog differential stop inputs (100–160 mV threshold), digital shutdown pin override (0.4–2.2 V logic), and latch disable control (0.8–2.2 V) - allowing either momentary or latched low-state forcing of both outputs. Thermal shutdown activates at 155°C, and cross-conduction current spike duration is limited to 25 ns during output transitions.

Key Specifications

Pinout & Package

UC3707N is housed in a 16-pin plastic dual-in-line package (PDIP-N), with four ground pins (pins 4, 5, 12, 13) tied together externally to minimize ground bounce and ensure stable reference for analog shutdown circuitry.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel power driver applications.

Compared with UC3707N, UC3707DW offers surface-mount compatibility and RoHS compliance for modern manufacturing, while UC2707N extends operational temperature range downward to –40°C - both retain identical timing, drive strength, and shutdown architecture, making them direct functional alternatives in most power stage designs.

Availability

UC3707N is available at Aetrix Electronics and suitable for DC-DC converter gate drive, motor control half-bridge, and industrial power supply sequencing requiring stable component supply across long-lifecycle embedded programs.

Supply support for UC3707N includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and power management technologies with over 50 years of innovation in high-reliability power control ICs.

The UC3707N belongs to TI's legacy UCx707 family of high-speed power drivers, engineered specifically for robust gate driving in industrial switch-mode power supplies and motor control systems demanding precise timing, latchable fault response, and wide supply voltage tolerance.

FAQ

What is the maximum continuous output current rating for UC3707N?

The UC3707N is rated for ±500 mA steady-state output current per channel under continuous operation, with ±1.5 A peak transient capability - this limit ensures thermal stability within the PDIP package's 2 W power dissipation ceiling at 25°C ambient. Exceeding ±500 mA continuously requires careful thermal design, as junction temperature must remain below 155°C to avoid thermal shutdown activation in the UC3707N.

Does UC3707N support both inverting and non-inverting inputs on each channel?

Yes, UC3707N provides dedicated inverting (INV) and non-inverting (N.I.) inputs for each of its two independent channels, as confirmed by the truth table in the official datasheet. This allows flexible signal routing - for example, applying the same PWM signal to one input while its complement drives the other, enabling push-pull or half-bridge configurations without external inverters in the UC3707N application circuit.

How does the analog shutdown feature work in UC3707N?

The UC3707N analog shutdown uses differential inputs (pins 6 and 7) with a 100–160 mV threshold to detect overcurrent or fault conditions - when the voltage difference exceeds this range, both outputs are forced low. This function can be configured as latching or non-latching via the Latch Disable pin (pin 3), and remains active even if the analog signal returns to normal unless explicitly reset through power cycling or digital override, making it ideal for safety-critical UC3707N implementations.

Can UC3707N operate with separate VIN and VC supply voltages?

Yes, UC3707N supports independent supply rails: VIN powers the logic and input circuitry (5–40 V), while VC powers the output totem-pole stages (also 5–40 V). This separation allows optimization - for instance, using a clean 12 V for VIN and a higher 24 V or 36 V for VC to maximize gate-drive voltage swing and reduce MOSFET R_DS(on) in high-current UC3707N applications.

What is the thermal shutdown temperature threshold for UC3707N?

The UC3707N activates thermal shutdown at 155°C junction temperature, as specified in the Electrical Characteristics table. This protection is internal and automatic - once triggered, outputs go low and remain latched low until junction temperature falls sufficiently below the trip point and the device is reset via VIN power cycle or digital shutdown pin release. This safeguard prevents permanent damage during sustained overload or inadequate heatsinking in UC3707N deployments.