The A4949GLJTR-T is a three-phase sensorless sinusoidal fan driver designed for quiet, efficient operation of medium-power fans. It features a PWM speed input, soft start, overcurrent protection, and a built-in FG speed output signal. The device is packaged in an 8-pin SOICN with an exposed thermal pad (LJ package), supporting an operating ambient temperature range of -40 to 105°C. The supply voltage range is up to 18 V, and the maximum junction temperature is 150°C. The thermal resistance with a two-sided PCB and 0.8 in² copper on each side is 62 °C/W.
The A4945/A4949 offers quiet and efficient operation of medium-power fans, using sinusoidal drive to minimize audible noise and vibration. These sensorless drivers simplify design and reduce system complexity.
* Note: If you have issues logging into this feature you may need to enable 3rd party cookies in your browser settings ECAD Models
Download Datasheet
IC FAN DRIVER BLDC 8SOIC Product overview: A4949GLJTR-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 key electrical ratings, package details, and application requirements. Search-friendly keywords include motor driver IC, H-bridge, stepper motor, PWM control, motion control, Motor Drivers, Controllers. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 744-A4949GLJTR-T can be used for catalog matching and distributor lookup.
IC FAN DRIVER BLDC 8SOIC
IC FAN DRIVER BLDC 8SOIC
Multiphase Motor Driver Power MOSFET PWM 8-SOIC-EP
| Allegro MicroSystems Inc. | ERSAELECTRONICS PTE. LTD. | Lingto Electronic Limited | Shenzhen Shengyu Electronics Technology Limited | Quarktwin Technology Ltd. | |
|---|---|---|---|---|---|
| Product Category | DC Motor Drives | DC Motor Drives | Motor Controllers | Motor Controllers | Motor Controllers |
| Product Number | A4949GLJTR-T | 744-A4949GLJTR-T | A4949GLJTR-T | A4949GLJTR-T | A4949GLJTR-T |
| Product Name | Sensorless Sinusoidal Fan Driver | Motor Driver IC | PMIC - Motor Drivers, Controllers | Integrated Circuits (ICs) - Power Management (PMIC) - Motor Drivers, Controllers | Motor Drivers, Controllers |
| Motor / System | DC Brushless | DC Brushless; Brushless DC (BLDC) | |||
| Configuration | PCB Mount | ||||
| PC-Based Bus | PWM |
