Texas Instruments UCC27537DBVR

Overview

UCC27537DBVR from Texas Instruments is a single-channel, high-speed MOSFET/IGBT gate driver in SOT-23-5 package with 2.5-A source / 5-A sink peak drive current, 17-ns typical propagation delay, and 10 V to 35 V wide VDD operating range. It features TTL/CMOS-compatible input logic, enable pin with fixed threshold, and rail-to-rail output drive-designed for high-efficiency switching in DC-DC converters and SiC FET power stages.

For engineers reviewing the UCC27537DBVR datasheet, UCC27537DBVR pinout, UCC27537DBVR application, or UCC27537DBVR equivalent, this page delivers verified electrical specs, thermal behavior at –40°C to 140°C, split-output design implications, UVLO thresholds (8.9 V turn-on), and real-world timing performance under 1.8-nF load conditions.

Technical Context

The UCC27537DBVR implements an asymmetrical drive architecture: OUTH provides 2.5-A sourcing capability while OUTL delivers 5-A sinking, enabling independent control of turn-on and turn-off slew rates via external resistors. Its non-inverting input (IN+) and dedicated enable (EN) support precise timing control in half-bridge topologies.

Internal undervoltage lockout (UVLO) holds output low until VDD reaches 8.9 V (typical), with 0.7-V hysteresis; input and enable pins tolerate –5 V DC below ground, enhancing robustness in noisy power systems. Propagation delays remain stable across temperature (–40°C to 140°C) and supply voltage (10–32 V).

Key Specifications

Pinout & Package

SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, surface-mount, thermally enhanced for high-current gate driving.

Key Features

Applications

Equivalent & Alternatives

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

Compared with UCC27536DBVR and TPS2829DBVR, the UCC27537DBVR uniquely combines enable control, non-inverting input, and 5-A sink in a single SOT-23-5 footprint-making it optimal for space-constrained, high-reliability power stages where independent turn-off control and fault-safe disable are mandatory.

Availability

UCC27537DBVR is available at Aetrix Electronics and suitable for switched-mode power supplies, solar inverters, and HEV/EV onboard chargers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for UCC27537DBVR 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 power management ICs, with decades of expertise in high-reliability power conversion solutions.

The UCC27537DBVR belongs to TI's UCC2753x family of high-speed gate drivers-engineered specifically for demanding MOSFET and IGBT switching applications in industrial, automotive, and renewable energy systems.

FAQ

What is the maximum recommended VDD voltage for UCC27537DBVR?

The absolute maximum VDD rating for UCC27537DBVR is 35 V, but the recommended operating maximum is 32 V per the datasheet's Recommended Operating Conditions table. Operating continuously above 32 V risks exceeding safe thermal limits and may degrade long-term reliability-even though the device survives short pulses up to 35 V. For robust 12-V or 24-V system designs, 32 V provides sufficient headroom for transient spikes.

Does UCC27537DBVR support both inverting and non-inverting configurations?

No-UCC27537DBVR supports only non-inverting logic: a high signal on IN+ drives OUT high, and a low signal drives OUT low. The UCC27533DBVR and UCC27536DBVR variants provide inverting input capability, but UCC27537DBVR uses a dedicated non-inverting input (IN+) and separate enable (EN) pin for unambiguous control. This simplifies timing in synchronous rectifier and half-bridge high-side drive applications.

Can UCC27537DBVR drive SiC MOSFETs effectively?

Yes-UCC27537DBVR is explicitly validated for SiC FET converters per its Applications section. Its 5-A sink current rapidly discharges high gate charge (Qg) of SiC devices, while 17-ns propagation delay and 7-ns fall time minimize switching losses at frequencies up to 200 kHz. Combined with –5 V input tolerance, it withstands the high dv/dt transients common in SiC-based topologies without false triggering.

What is the purpose of the EN pin on UCC27537DBVR?

The EN pin on UCC27537DBVR provides hardware-level fault shutdown: pulling EN low forces the output into a high-impedance low state regardless of IN+ status, ensuring safe gate discharge during overcurrent, overtemperature, or controller reset events. Its TTL-compatible threshold (1.9 V typical) allows direct connection to MCU GPIOs or comparator outputs without level-shifting-critical for functional safety compliance in industrial drives.

How does UCC27537DBVR handle floating inputs?

When IN+ and EN are left floating, internal circuitry pulls the output low-preventing unintended power switch turn-on. This fail-safe behavior is confirmed in the datasheet's Description section and eliminates the need for external pull-down resistors in most applications. However, for highest immunity in noisy environments, TI recommends tying unused inputs to GND or VDD via ≤10-kΩ resistors.