The A4939KLPTR-T is an automotive three-phase MOSFET driver designed for N-channel external power MOSFETs in applications such as electronic power steering and engine cooling fans. It operates from a 5.5 V to 50 V supply voltage and features cross-conduction protection, motor phase short-to-supply and short-to-ground detection, undervoltage and overtemperature monitoring, and a low-current sleep mode. The device includes an open-drain fault output and is housed in a 28-pin TSSOP package with an exposed thermal pad, measuring 9.7 mm × 4.4 mm with a nominal height of 1.2 mm. It is lead-free with 100% matte-tin plating and supports operation from -40°C to 150°C ambient temperature.
The A4939 offers robust protection and reliable performance in automotive motor drive applications up to 50V, with integrated fault detection, short circuit protection, and overtemperature monitoring.
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Download Datasheet
Multiphase Motor Driver Power MOSFET Parallel 28-TSSOP-EP
Manufacturer: Allegro MicroSystems, LLC
Win Source Part Number: 909015-A4939KLPTR-T
Operating Temperature Range: -40°C ~ 150°C (TA)
Features: Multiphase Motor Driver Power MOSFET Parallel 28-TSSOP-EP
Package: 28-TSSOP (0.173", 4.40mm Width) Exposed Pad
Package: Reel - TR
Mounting: Surface Mount
Family Name: A4939
Categories: Integrated Circuits (ICs)
Case / Package: 28-TSSOP-EP
ECCN: EAR99
Popularity: High
Fake Threat In the Open Market: 63 pct.
Supply and Demand Status: Balance
Quantity per package: 8000
MSL Level: 2 (1 Year)
Estimated Pruduction Lead Time: 19 Weeks
REACH Status: REACH Unaffected
HTSUS: 8542.39.0001
Brushless DC Motor Controller, PDSO28, 9.70 X 4.40 MM, 1.20 MM HEIGHT, MO-153AET, LEAD FREE, TSSOP-28 Product overview: A4939KLPTR-T from Allegro MicroSystems is a Motor Driver IC for embedded motor control, robotics, automation equipment, haptic feedback, pumps, fans, and industrial motion systems. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include TSSOP. Search-friendly keywords include motor driver IC, H-bridge, stepper motor, PWM control, motion control, TSSOP, Motor Drivers, Controllers. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 744-A4939KLPTR-T can be used for catalog matching and distributor lookup.
Integrated Circuits (ICs) - PMIC - Motor Drivers, Controllers
IC MTR DRV MULTI 5.5-50V 28TSSOP
Multiphase Motor Driver Power MOSFET Parallel 28-TSSOP-EP
| Allegro MicroSystems Inc. | DigiKey | Win Source Electronics | ERSAELECTRONICS PTE. LTD. | Shenzhen Shengyu Electronics Technology Limited | Lingto Electronic Limited | Quarktwin Technology Ltd. | |
|---|---|---|---|---|---|---|---|
| Product Category | DC Motor Drives | Motor Controllers | Motion Controllers | DC Motor Drives | Motor Controllers | Motor Controllers | Motor Controllers |
| Product Number | A4939KLPTR-T | A4939KLPTR-T-ND | 909015-A4939KLPTR-T | 744-A4939KLPTR-T | A4939KLPTR-T | A4939KLPTR-T | A4939KLPTR-T |
| Product Name | Three Phase Mosfet Driver | Motor Drivers, Controllers | PMIC - PMIC - Motor Drivers, Controllers - A4939KLPTR-T | TSSOP Motor Driver IC | Integrated Circuits (ICs) - PMIC - Motor Drivers, Controllers | PMIC - Motor Drivers, Controllers | Motor Drivers, Controllers |
| Motor / System | DC Brushless | DC Brushless | DC Brushless; Brushless DC (BLDC) | ||||
| Configuration | PCB Mount | PCB Mount; "28-TSSOP (0.173"", 4.40mm Width) Exposed Pad" | |||||
| Communication | Parallel Interface | Parallel |
