The A3921KLPTR-T is an automotive full bridge MOSFET driver designed for high-power inductive loads, such as brush DC motors. It supports high current gate drive for N-channel MOSFETs and operates within a supply voltage range of 5.5 to 50 V. The driver features a charge pump for low supply voltage operation, enabling full gate drive even at battery voltages as low as 7 V. It includes adjustable dead time for cross-conduction protection and can operate in both fast and slow decay modes. The device integrates diagnostics for undervoltage, overtemperature, and power bridge faults, enhancing reliability in automotive applications. It is AEC-Q100 qualified, ensuring compliance with automotive standards. The A3921KLPTR-T is packaged in a 28-pin TSSOP with an exposed thermal pad for improved heat dissipation, making it suitable for demanding environments.
The A3921 is designed for automotive applications requiring robust control of high-power inductive loads. It offers high-current gate drive for N-channel MOSFETs, integrated diagnostics, and a wide operating voltage range (5.5V-50V).
* Note: If you have issues logging into this feature you may need to enable 3rd party cookies in your browser settings
Download Datasheet
MOSFET Gate Driver, Full Bridge, PWM, TSSOP, SM Product overview: A3921KLPTR-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-A3921KLPTR-T can be used for catalog matching and distributor lookup.
Motor Driver Power MOSFET PWM 28-TSSOP-EP
Motor Driver Power MOSFET PWM 28-TSSOP-EP
Motor Driver Power MOSFET PWM 28-TSSOP-EP
Manufacturer: Allegro MicroSystems, LLC
Win Source Part Number: 766695-A3921KLPTR-T
Packaging: Reel package
Operating Temperature Range: -40°C ~ 150°C (TA)
Package: 28-TSSOP (0.173", 4.40mm Width) Exposed Pad
Applications: Automotive
Mounting: SMD
Technology: Power MOSFET
Operating Supply Voltage: 5.5 V ~ 50 V
Function: Controller - Commutation, Direction Management
Interface: PWM
Output Configuration: Pre-Driver - Half Bridge (2)
Motor Type - AC, DC: Brushed DC
Family Name: A3921
Categories: Integrated Circuits (ICs)
Manufacturer Package: 28-TSSOP-EP
Introduction Date: August 10, 2012
ECCN: EAR99
Country of Origin: Thailand
Estimated EOL Date: 2026
Popularity: Medium
Fake Threat In the Open Market: 53 pct.
Supply and Demand Status: Balance
IC MOTOR DRIVER 5.5V-50V 28TSSOP
Motor Driver Power MOSFET PWM 28-TSSOP-EP
IC MOTOR DRIVER 5.5V-50V 28TSSOP
| Allegro MicroSystems Inc. | ERSAELECTRONICS PTE. LTD. | DigiKey | Win Source Electronics | Shenzhen Shengyu Electronics Technology Limited | Quarktwin Technology Ltd. | Lingto Electronic Limited | |
|---|---|---|---|---|---|---|---|
| Product Category | DC Motor Drives | DC Motor Drives | Motor Controllers | Motion Controllers | Motor Controllers | Motor Controllers | Motor Controllers |
| Product Number | A3921KLPTR-T | 744-A3921KLPTR-T | 620-1523-1-ND | 766695-A3921KLPTR-T | A3921KLPTR-T | A3921KLPTR-T | A3921KLPTR-T |
| Product Name | Automotive Full Bridge Mosfet Driver | TSSOP Motor Driver IC | Motor Drivers, Controllers | PMIC - PMIC - Motor Drivers, Controllers - A3921KLPTR-T | 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 | PWM | ||||||
| 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) |
