Texas Instruments UCC27519AQDBVRQ1

Overview

UCC27519AQDBVRQ1 from Texas Instruments is a single-channel, high-speed, low-side MOSFET/IGBT gate driver with noninverting logic, 4-A peak source/sink symmetrical drive, 17-ns typical propagation delay, and –5-V negative input voltage capability. It operates from 4.5 V to 18 V supply and supports automotive power stages driving GaN switches in DC-DC converters.

For engineers reviewing the UCC27519AQDBVRQ1 datasheet, UCC27519AQDBVRQ1 pinout, UCC27519AQDBVRQ1 application, or UCC27519AQDBVRQ1 equivalent, this page delivers verified functional role, validated thermal performance (R_θJA = 215.5°C/W), confirmed CMOS input threshold behavior (V_{IN_H} = 55% V_DD), and precise enable-pin compatibility with TPS2829-Q1.

Technical Context

The UCC27519AQDBVRQ1 implements a noninverting input architecture where the IN+ pin directly controls output state, with internal pullup ensuring LOW output when floating. Its shoot-through-minimized output stage uses matched P/N-MOSFETs to deliver symmetrical 4-A peak current into 1.8-nF loads at 12 V.

Undervoltage lockout (UVLO) activates below 3.8 V (rising) and releases above 4.2 V, with 0.3-V hysteresis ensuring glitch-free startup. The EN pin features fixed-voltage thresholds (VEN_H = 2.1 V, VEN_L = 1.25 V), independent of VDD, enabling direct compatibility with TPS2829-Q1's NC pin.

Key Specifications

Pinout & Package

UCC27519AQDBVRQ1 is housed in a 5-pin SOT-23 (DBV) package with 2.90 mm × 1.60 mm body size and standard JEDEC MO-178 footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2829-Q1 and UCC27518AQDBVRQ1, the UCC27519AQDBVRQ1 uniquely combines noninverting logic, symmetrical 4-A drive, and –5-V input tolerance in a pin-compatible SOT-23 package-making it optimal for new GaN-based DC-DC and automotive power designs requiring robust, low-jitter gate control.

Availability

UCC27519AQDBVRQ1 is available at Aetrix Electronics and suitable for automotive power modules, solar microinverters, and industrial motor drives requiring stable component supply, AEC-Q100 Grade 1 qualification, and long-term production continuity.

Supply support for UCC27519AQDBVRQ1 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 designing analog ICs, embedded processors, and power management solutions for automotive, industrial, and communications markets.

The UCC27519AQDBVRQ1 belongs to TI's UCC2751x-Q1 automotive gate driver family, engineered specifically for high-reliability, high-frequency power conversion in safety-critical vehicle subsystems and next-generation wide-bandgap power systems.

FAQ

What is the input logic configuration of the UCC27519AQDBVRQ1?

The UCC27519AQDBVRQ1 implements noninverting logic: when the IN+ pin is driven HIGH (≥55% VDD), the OUT pin goes HIGH; when IN+ is LOW (≤39% VDD), OUT goes LOW. This behavior is confirmed in the Functional Block Diagram (Figure 19) and Pin Functions table of the SLVSC90B datasheet. Unlike the inverting UCC27518AQDBVRQ1, the UCC27519AQDBVRQ1 requires no external logic inversion for standard PWM controllers.

Does the UCC27519AQDBVRQ1 support negative voltage on its input pins?

Yes, the UCC27519AQDBVRQ1 supports –5 V on both IN+ and EN pins, as specified in Section 8.1 Absolute Maximum Ratings and confirmed in Section 9.3.3 Input Stage. This capability allows direct connection to PWM controllers located on separate PCBs with ground potential differences up to 5 V, eliminating external clamping diodes or level shifters in automotive and industrial layouts.

What is the undervoltage lockout (UVLO) behavior of the UCC27519AQDBVRQ1?

The UCC27519AQDBVRQ1 features UVLO with a rising threshold of 4.2 V (min 3.8 V) and falling threshold of 3.9 V (max 4.35 V), providing 0.3-V hysteresis. During UVLO, the OUT pin is actively held LOW regardless of IN+ or EN state-ensuring glitch-free startup and shutdown. This is documented in Section 8.5 Electrical Characteristics and Figure 20 of the SLVSC90B datasheet.

Is the UCC27519AQDBVRQ1 pin-compatible with the TPS2829-Q1?

Yes, the UCC27519AQDBVRQ1 is pin-to-pin compatible with the TPS2829-Q1, as explicitly stated in the Features section and Section 5 Description (continued) of the SLVSC90B datasheet. The EN pin is floatable and functions identically to the NC pin on TPS2829-Q1, allowing direct substitution without PCB changes-provided the application requires symmetrical 4-A drive and noninverting logic.

What thermal resistance values apply to the UCC27519AQDBVRQ1 in DBV package?

The UCC27519AQDBVRQ1 in 5-pin SOT-23 (DBV) package has R_θJA = 215.5°C/W, R_θJC(top) = 136.1°C/W, and R_θJB = 43.2°C/W, per Section 8.4 Thermal Information in SLVSC90B. These values assume JEDEC-standard PCB mounting with 2-oz copper and defined copper pour area; actual board-level thermal performance depends on layout, copper area, and airflow.