Texas Instruments UCC27424QDRQ1

Overview

UCC27424QDRQ1 from Texas Instruments is a dual noninverting automotive-grade low-side MOSFET driver delivering ±4-A peak output current per channel, 20-ns rise/15-ns fall times (1.8-nF load), and 4-V to 15-V supply operation. It features independent enable inputs (ENBA/ENBB), TTL/CMOS-compatible inputs, and is used in high-efficiency DC-DC converters and motor controllers where precise gate timing and Miller plateau drive are critical.

For engineers reviewing the UCC27424QDRQ1 datasheet, UCC27424QDRQ1 pinout, UCC27424QDRQ1 application, or UCC27424QDRQ1 equivalent, this page delivers verified electrical specs, thermal metrics for SOIC-8 packaging, AEC-Q100 Grade 1 qualification details, and real-world switching behavior under 1.8-nF capacitive loads - all essential for automotive power stage design validation.

Technical Context

The UCC27424QDRQ1 implements a bipolar-MOSFET hybrid output stage that concurrently sources and sinks 4-A peak current at the MOSFET Miller threshold region, minimizing transition losses. Its dual noninverting logic configuration drives external N-channel MOSFETs with matched propagation delays (t_D1 = 35 ns typ., t_D2 = 25 ns typ.) and tightly controlled input thresholds (V_IL = 1.2 V max, V_IH = 2.2 V min).

Each channel includes an active-high enable input (ENBA/ENBB) with 100-kΩ internal pull-up, hysteresis (0.15–0.9 V), and logic-compatible voltage thresholds. The device operates across –40°C to +125°C ambient, supports parallel output configuration, and maintains stable drive performance down to 4-V supply while rejecting slow input transitions.

Key Specifications

Pinout & Package

UCC27424QDRQ1 is packaged in an 8-pin SOIC (D package), 4.90 mm × 3.91 mm body size, with GND on Pin 3 and PowerPAD not present (PowerPAD variant is DGN only). This SOIC-8 variant uses industry-standard pinout and is lead (Pb)-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual low-side MOSFET driver applications.

Compared with UCC27424QDGNRQ1, the UCC27424QDRQ1 offers lower cost and standard SOIC layout compatibility but sacrifices thermal performance. Versus LM5113QDGSRQ1, it provides true dual-channel independence and enable control at the expense of bootstrap integration - making it optimal for discrete low-side-only or paralleled configurations.

Availability

UCC27424QDRQ1 is available at Aetrix Electronics and suitable for automotive power conversion, motor control, and Class D audio amplification requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for UCC27424QDRQ1 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 leader specializing in analog, embedded processing, and automotive ICs, with decades of expertise in high-reliability power management solutions.

The UCC2742x-Q1 product line was designed specifically for AEC-Q100-compliant automotive power stages - delivering robust, high-current gate drive with precise timing control for electric power steering, ADAS, and body electronics.

FAQ

What is the maximum capacitive load the UCC27424QDRQ1 can drive while maintaining specified rise/fall times?

The UCC27424QDRQ1 is characterized for 20-ns rise and 15-ns fall times with a 1.8-nF load. While it can drive larger loads (e.g., 10 nF), measured rise/fall times increase to ~40 ns. For designs requiring sub-25-ns edges, keep total gate capacitance ≤2.2 nF including PCB parasitics and ensure low-inductance layout with short gate traces and local 0.1-µF VDD bypassing.

Does the UCC27424QDRQ1 support paralleling of its two outputs for higher current drive?

Yes, the UCC27424QDRQ1 supports paralleling of OUTA and OUTB by connecting INA to INB and OUTA to OUTB. This configuration delivers up to ±8-A peak current. Ensure matched trace lengths and identical gate resistors on both paths to avoid current imbalance. The device's matched propagation delays (≤10 ns skew) make it well-suited for this mode.

What happens to the outputs of the UCC27424QDRQ1 when ENBA or ENBB is left unconnected?

When ENBA or ENBB is left open, the internal 100-kΩ pull-up resistor biases the pin to VDD, enabling the respective driver channel. OUTA and OUTB remain fully functional and responsive to INA/INB. However, for deterministic startup or fault-safe operation, TI recommends explicitly tying unused enable pins to VDD or GND rather than relying on internal pull-ups.

Is the UCC27424QDRQ1 pin-compatible with earlier UCC2742x variants like UCC27423QDRQ1?

Yes, the UCC27424QDRQ1 shares identical SOIC-8 pinout, package dimensions, and pin functions with UCC27423QDRQ1 and UCC27425QDRQ1. Only the internal logic configuration differs: UCC27424QDRQ1 is dual noninverting, UCC27423QDRQ1 is dual inverting, and UCC27425QDRQ1 is mixed. No PCB changes are needed when substituting within the same package type.

How does the UCC27424QDRQ1 handle input signals slower than 200 ns rise/fall time?

The UCC27424QDRQ1 input stage is optimized for fast logic edges (<200 ns). Slow-rising inputs may cause multiple output transitions near the input threshold due to noise sensitivity and lack of built-in Schmitt triggering beyond enable hysteresis. TI advises using external RC filtering or logic buffers to ensure clean, monotonic input transitions - especially in noisy automotive environments.