The A3944KLPTR-T is a programmable six-channel low-side MOSFET pre-driver designed for automotive applications. It supports logic-level N-channel MOSFETs and provides a gate drive current of 40 mA, enabling PWM control up to 20 kHz, depending on the MOSFET gate charge. Each channel features independent fault diagnostics for short-to-ground and open load conditions, as well as short-to-battery detection when active. The device includes programmable fault timers and thresholds, which can be configured via a SPI-compatible interface, allowing for both serial and parallel control. The A3944KLPTR-T operates within a voltage range of -0.3 to 40 V for the analog supply and -0.3 to 6.5 V for logic and gate drive supplies. It is housed in a compact 28-pin TSSOP package with an exposed thermal pad, suitable for applications requiring efficient thermal management. The device is compatible with both 3.3 V and 5 V digital inputs and outputs, making it versatile for various automotive ECU and actuator applications.
Brush DC Drivers
6-Ch Gate Driver, 40V, 2.6MHz, SPI/Parallel, TSSOP Product overview: A3944KLPTR-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 40V, 2.6MHz, TSSOP. Search-friendly keywords include motor driver IC, H-bridge, stepper motor, PWM control, motion control, 40V, 2.6MHz, TSSOP, Motor Drivers, Controllers. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 744-A3944KLPTR-T can be used for catalog matching and distributor lookup.
Manufacturer: Allegro MicroSystems, LLC
Win Source Part Number: 1134591-A3944KLPTR-T
Packaging: Reel - TR
Operating Temperature Range: -40°C ~ 150°C (TA)
Package: 28-TSSOP (0.173", 4.40mm Width) Exposed Pad
Applications: Automotive
Mounting: SMD
Technology: NMOS
Operating Supply Voltage: 3 V ~ 5.5 V
Function: Controller - Commutation, Direction Management
Interface: SPI, Parallel
Output Configuration: Pre-Driver - Low Side (6)
Motor Type - AC, DC: Brushed DC
Family Name: A3944
Categories: Integrated Circuits (ICs)
Manufacturer Homepage: www.allegromicro.com
Manufacturer Package: 28-TSSOP-EP
Introduction Date: September 16, 2011
ECCN: EAR99
Country of Origin: Philippines
Estimated EOL Date: 2024
Popularity: Medium
Fake Threat In the Open Market: 49 pct.
Supply and Demand Status: Sufficient
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| Allegro MicroSystems Inc. | ERSAELECTRONICS PTE. LTD. | Win Source Electronics | DigiKey | Shenzhen Shengyu Electronics Technology Limited | Quarktwin Technology Ltd. | Lingto Electronic Limited | |
|---|---|---|---|---|---|---|---|
| Product Category | DC Motor Drives | DC Motor Drives | Motion Controllers | Motor Controllers | Motor Controllers | Motor Controllers | Motor Controllers |
| Product Number | A3944KLPTR-T | 744-A3944KLPTR-T | 1134591-A3944KLPTR-T | 620-1669-6-ND | A3944KLPTR-T | A3944KLPTR-T | A3944KLPTR-T |
| Product Name | Six Channel Low Side Mosfet Pre-Driver | 40V 2.6MHz TSSOP Motor Driver IC | PMIC - PMIC - Motor Drivers, Controllers - A3944KLPTR-T | Motor Drivers, Controllers | Integrated Circuits (ICs) - Power Management (PMIC) - Motor Drivers, Controllers | Motor Drivers, Controllers | PMIC - Motor Drivers, Controllers |
| Motor / System | DC Brushed | DC Brushed | DC Brushed; Brushed DC | ||||
| Configuration | PCB Mount | PCB Mount; "28-TSSOP (0.173"", 4.40mm Width) Exposed Pad" | |||||
| PC-Based Bus | SPI, Parallel | ||||||
| Operating Temperature | -40 C (-40 F) | -40 to 150 C (-40 to 302 F) | -40 to 150 C (-40 to 302 F) | -40 to 150 C (-40 to 302 F) |
