Texas Instruments UC3707DW

Overview

UC3707DW from Texas Instruments is a dual-channel high-speed power MOSFET driver IC designed for gate driving in DC-DC converters, motor control, and half-bridge applications. 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 with 40 ns rise/fall times into 1000 pF load.

For engineers reviewing the UC3707DW datasheet, UC3707DW pinout, UC3707DW application, or UC3707DW equivalent, key selection considerations include its analog/digital shutdown architecture with latch disable control, thermal shutdown at 155°C, and SOIC-16 package compatibility with industrial temperature range (0°C to +70°C).

Technical Context

The UC3707DW integrates 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 while maintaining low cross-conduction current spikes (<25 ns duration). Its dual-input structure supports both inverting and non-inverting logic control per channel, enabling flexible PWM or complementary drive configurations.

Shutdown functionality combines analog differential stop inputs (100–160 mV threshold) and digital shutdown pin override, with latching behavior controlled by the Latch Disable pin (0.8–2.2 V threshold). Thermal shutdown activates at 155°C, and internal circuitry ensures safe operation across VIN/VC = 5–40 V with quiescent currents as low as 5.2 mA (VC supply, outputs low).

Key Specifications

Pinout & Package

UC3707DW is housed in a 16-pin SOIC (DW) package with standard 1.27 mm pitch, RoHS-compliant NiPdAu lead finish, and moisture sensitivity level (MSL) 2–260°C–1 year. Pin 1 orientation follows Q1 quadrant assignment per TI tape-and-reel specification.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UC2707DW, UC3707DW trades extended temperature range for lower cost and tighter qualification for commercial systems; compared with UCC37322D, it offers true dual-channel independence and integrated analog fault management - essential for reliable multi-switch power conversion.

Availability

UC3707DW is available at Aetrix Electronics and suitable for DC-DC converter design, industrial motor control, and programmable power switching applications requiring stable component supply and long-term industrial availability.

Supply support for UC3707DW 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 decades of leadership in high-reliability power interface ICs.

The UC3707DW belongs to TI's legacy UCx707 family of high-speed dual power drivers, engineered specifically for robust gate driving in industrial switching power supplies and motor control systems requiring analog fault detection and configurable shutdown.

FAQ

What is the maximum continuous output current rating for UC3707DW?

The UC3707DW supports ±500 mA steady-state output current per channel under continuous operation, with ±1.5 A peak transient capability limited by thermal dissipation and duty cycle. This rating assumes proper PCB copper area and ambient temperature within 0°C to +70°C - exceeding this requires derating per the device's thermal resistance curves in the datasheet. The UC3707DW must not be operated beyond its absolute maximum ratings, including 20 mJ capacitive discharge energy limit.

Does UC3707DW support both high-side and low-side MOSFET driving?

Yes, UC3707DW supports both high-side and low-side N-channel MOSFET driving via its totem-pole outputs, which source and sink up to 1.5 A. However, high-side drive requires a floating supply referenced to the MOSFET source - the UC3707DW does not integrate a charge pump or level shifter, so external bootstrap or isolated bias supplies are necessary for high-side operation. The UC3707DW's dual independent channels simplify implementation in half-bridge or full-bridge configurations when paired with appropriate gate supply architecture.

How does the analog shutdown function work on UC3707DW?

The UC3707DW analog shutdown uses differential inputs (STOP+ and STOP–) with a 100–160 mV threshold to detect overcurrent or fault conditions. When the voltage difference exceeds this window, the internal comparator triggers shutdown - pulling both outputs low. Its behavior (latched or auto-reset) depends on the Latch Disable pin state. If Latch Disable is low, the shutdown persists until VIN is cycled or Latch Disable goes high; if high, outputs resume normal operation once the analog condition clears. This makes UC3707DW suitable for precise, adjustable fault protection without microcontroller intervention.

Is UC3707DW pin-compatible with UC2707DW or UC1707J?

No, UC3707DW is not pin-compatible with UC1707J (CDIP-16) or UC2707DW (SOIC-16) despite identical pin count and function mapping - the UC1707J uses different thermal pad configuration and SNPB lead finish, while UC3707DW and UC2707DW share the same SOIC-16 DW package outline and pinout. However, UC3707DW and UC2707DW are functionally and physically interchangeable in PCB layout, differing only in temperature rating (0°C–70°C vs. –40°C–85°C) and qualification level.

What is the purpose of the Latch Disable pin on UC3707DW?

The Latch Disable pin (Pin 3) on UC3707DW determines whether analog shutdown events result in latched or momentary output disable. When pulled low, analog shutdown causes outputs to remain low until VIN is reset or Latch Disable is raised - useful for fail-safe lockout. When pulled high, outputs return to normal operation immediately after the analog fault clears. This feature allows UC3707DW to meet diverse safety requirements across industrial equipment classes without redesigning control logic - making it adaptable for both self-clearing and hard-fault applications.