UCC27517DBVR Overview
The UMW UCC27517DBVR is a single-channel, low-side in-phase MOSFET and IGBT gate driver designed for use in synchronous buck converters, LLC resonant stages, motor drive low-side switches, and a wide range of other power conversion topologies requiring a compact, high-current gate drive solution. Manufactured on UMW’s proprietary latch-immune CMOS process, the UCC27517DBVR achieves a high degree of integration robustness, making it resistant to latch-up caused by switching noise and high dV/dt transients that are common in hard-switched power stages. The device delivers 4A symmetrical peak output current — equal source and sink capability — ensuring fast, balanced charge and discharge of the power switch gate capacitance in both turn-on and turn-off transitions.
UMW has engineered the UCC27517DBVR with a broad VCC supply range of 5V to 25V, accommodating the standard 12V, 15V, and 18V gate drive rails used across MOSFET and IGBT power stages, as well as 5V logic-powered applications. The input logic threshold is compatible with CMOS, TTL, and 3.3V digital outputs, enabling direct connection to modern microcontrollers and DSPs without level-shifting circuitry. Matched rise and fall times of 10ns each ensure consistent, symmetric switching waveforms, which simplifies EMI filtering design and reduces the risk of asymmetric duty cycle errors in PWM-controlled stages. Integrated undervoltage lockout (UVLO) with hysteresis holds the gate drive output low until VCC rises above the safe operating threshold, preventing partial enhancement of the power switch during supply start-up or transient undervoltage events.
The UCC27517DBVR is housed in the industry-standard SOT-23-5 package — the most compact 5-pin SMD format, widely used for single-channel gate drivers in space-constrained PCB designs such as power modules, compact inverter boards, and point-of-load converters. UMW’s UCC27517DBVR is a direct functional and footprint replacement for the Texas Instruments UCC27517, sharing an identical part number suffix and SOT-23-5 pinout. ABL Semi stocks the UCC27517DBVR as a fully authentic, original UMW factory product, with flexible MOQ from prototype to volume production and full compliance documentation for UK and European customers.
Key Specifications
| Parameter | Value |
|---|---|
| Device Type | Single-Channel Low-Side In-Phase Gate Driver |
| Supply Voltage (VInput / VCC) | 5V to 25V |
| Peak Source Output Current (IOH) | 4A |
| Peak Sink Output Current (IOL) | 4A |
| Rise Time (Tr) | 10ns |
| Fall Time (Tf) | 10ns |
| Input Logic Compatibility | CMOS, TTL, 3.3V compatible |
| Output Phase | In-phase with input |
| UVLO Protection | Integrated with hysteresis |
| Technology | Latch-immune CMOS |
| Operating Temperature Range | -40°C to +125°C |
| Package | SOT-23-5 |
Applications
The UCC27517DBVR is well-suited to any power conversion or motor control application requiring a compact, high-current single-channel low-side gate driver with broad logic-level compatibility. Primary application areas include synchronous buck and boost DC-DC converters, LLC resonant converter low-side switches, BLDC motor drive low-side phases, PFC boost stage gate drive, and isolated flyback secondary synchronous rectifiers. The device is equally applicable in industrial power supplies, battery management system FET drive circuits, and GaN FET gate drive stages where its 25V maximum supply, 4A balanced drive, and SOT-23-5 footprint provide an efficient, space-saving gate drive solution.
Pin-to-Pin Compatible Alternatives
The UMW UCC27517DBVR is designed as a direct pin-for-pin replacement for the TI UCC27517 and shares the SOT-23-5 footprint with other widely used single-channel low-side gate drivers, enabling cost-optimised substitution and multi-source procurement without any PCB modification.
| Reference Part Number | Original Manufacturer | Why Choose UCC27517DBVR |
|---|---|---|
| UCC27517DBVR | Texas Instruments | The original reference device; UMW’s UCC27517DBVR is an identical pin-to-pin replacement in SOT-23-5, offering the same 4A/25V specification at a lower unit cost with flexible MOQ from ABL Semi |
| TC4427AVOA | Microchip (Telcom) | Dual-channel 1.5A gate driver in SOT-23; UCC27517DBVR provides a single-channel 4A alternative with higher peak drive current for faster gate switching of larger MOSFETs and IGBTs |
| MCP1407T-E/OT | Microchip | Single-channel 6A gate driver in SOT-23-5; UCC27517DBVR offers a pin-compatible 4A alternative with equivalent 3.3V logic compatibility and UVLO in the same compact footprint |
| IXD_614YITR | IXYS (Littelfuse) | High-speed single-channel gate driver in SOT-23; UCC27517DBVR provides comparable drive current with integrated UVLO hysteresis and a wider 5V–25V supply range at a more competitive price point |
| ZXGD3009E6TA | Diodes Inc. | Single N-channel gate driver in SOT-23-6; UCC27517DBVR offers equivalent 4A drive in the more compact 5-pin SOT-23-5 footprint with CMOS/TTL/3.3V input compatibility and latch-immune construction |
Frequently Asked Questions
Is UCC27517DBVR RoHS compliant?
Yes. The UCC27517DBVR is fully RoHS compliant. UMW manufactures the UCC27517DBVR in accordance with EU RoHS Directive 2011/65/EU, ensuring the device is free from restricted hazardous substances including lead and mercury. ABL Semi can provide full compliance and trade documentation upon request to support UK and European regulatory and procurement requirements.
What are the pin-to-pin replacements for UCC27517DBVR?
The UMW UCC27517DBVR is a direct pin-to-pin replacement for the Texas Instruments UCC27517DBVR, sharing an identical SOT-23-5 footprint and functional specification, and is also compatible with single-channel low-side gate drivers including the Microchip MCP1407T-E/OT, IXYS IXD_614YITR, and Diodes Inc. ZXGD3009E6TA in comparable SOT-23 package variants. Refer to the compatibility table above for a detailed comparison.
What is the minimum order quantity (MOQ) for UCC27517DBVR?
ABL Semi offers flexible MOQ for UCC27517DBVR, supporting both prototype quantities and mass production orders. Contact us for current stock and pricing.
What package options are available for UCC27517DBVR?
The UCC27517DBVR is available in the SOT-23-5 (5-pin small outline transistor) surface-mount package — the most compact industry-standard footprint for single-channel gate drivers. The SOT-23-5 is pin-compatible with the Texas Instruments UCC27517DBVR original, ensuring zero PCB modification is required when adopting the UMW device as a direct replacement. Contact ABL Semi to confirm current stock availability.
Can the UCC27517DBVR be used to drive GaN FETs as well as silicon MOSFETs and IGBTs?
Yes, subject to gate voltage compatibility. The UCC27517DBVR’s 5V to 25V supply range and 4A peak output current make it suitable for driving enhancement-mode GaN FETs, which typically require a positive turn-on voltage of +5V to +6V and benefit from fast gate charging due to their extremely low gate charge. Since the UCC27517DBVR is an in-phase, low-side driver, it is best matched to normally-OFF (enhancement-mode) GaN devices used in low-side switch positions — such as synchronous rectifier stages or low-side legs of totem-pole PFC circuits. For GaN applications where a negative turn-off bias is required to prevent spurious turn-on, the UCC27517DBVR alone is not sufficient; a bipolar gate drive supply and a driver with negative bias capability would be needed instead.
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