Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Topology | Single-channel low-side gate driver |
| Peak Drive | 4 A source / 4 A sink |
| Supply | 4.5 V to 18 V |
| Delay | 17 ns typical propagation delay |
| Logic | CMOS input threshold referenced to supply |
| Control | Dedicated enable input |
| UVLO | Output held low during UVLO |
| Exact Package / Packing | SOT-23 (DBV), 5 pins; 3000-piece large tape and reel |
Product Overview
UCC27519DBVR is a symmetrical 4 A gate driver whose input threshold follows a CMOS-style fraction of supply rather than the VDD-independent TTL-style threshold used by some other UCC2751x devices. That distinction matters when interfacing a low-voltage controller to a higher driver supply.
A dedicated enable pin gives the system an explicit hardware path to shut the gate output low. It can be useful for sequencing or fault interlock, provided the enable threshold/source is compatible with the chosen VDD domain.
The part remains a low-side driver; it does not provide high-side bootstrap translation. The SOT-23-5 3000-piece DBVR order code targets compact single-switch stages.
For related devices, see HKEQGOO’s Gate Drivers category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | UCC27519DBVR |
| Topology | Single-channel low-side gate driver |
| Peak Drive | 4 A source / 4 A sink |
| Supply | 4.5 V to 18 V |
| Delay | 17 ns typical propagation delay |
| Logic | CMOS input threshold referenced to supply |
| Control | Dedicated enable input |
| UVLO | Output held low during UVLO |
| Exact Package / Packing | SOT-23 (DBV), 5 pins; 3000-piece large tape and reel |
| Manufacturer Status | Active / Production |
| Part Marking | 7519 |
Functional Highlights
CMOS input threshold is an interface choice, not a generic “logic compatible” detail
At higher VDD, a low-voltage MCU output may not meet the required VIH even though a TTL-threshold UCC device would. The exact controller voltage must be checked.
Enable supports explicit output inhibit
A dedicated hardware enable can force the gate low during startup/fault handling without depending solely on PWM state.
Design Considerations
- Verify VIH/VIL at the actual VDD and controller output voltage before using the CMOS-input variant.
- Define the enable default with a resistor/driver so power-up does not leave the gate state ambiguous.
- Keep the gate-drive loop short and decouple VDD at the driver.
Product Status and Exact Order Code
Manufacturer status: Active / Production
Texas Instruments lists UCC27519DBVR as Active / Production; SOT-23 (DBV), 5 pins; 3000-piece large tape and reel; −40°C to +140°C; exact order code active.
Related Engineering Resources
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