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Product Detailed Parameters
- Description：IC MOTOR DRIVER 8V-36V 28QFN
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Motor Type - Stepper：-
- Motor Type - AC, DC：Brushless DC (BLDC)
- Function：Controller - Commutation, Direction Management
- Output Configuration：Pre-Driver - Half Bridge (2)
- Interface：PWM
- Technology：Power MOSFET
- Step Resolution：-
- Applications：Fan Controller
- Current - Output：-
- Voltage - Supply：8V ~ 36V
- Voltage - Load：-
- Operating Temperature：-20°C ~ 105°C (TA)
- Mounting Type：Surface Mount
- Package / Case：28-VFQFN Exposed Pad
- Supplier Device Package：28-QFN (5x5)
- Grade：-
- Qualification：-
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Overview
The A4930METTR-T is a single-phase brushless DC (BLDC) fan pre-driver designed for pulse-width modulated (PWM) current control. It operates within a supply voltage range of 8V to 37.5V and supports junction temperatures from -20°C to +105°C. The device utilizes a 28-VFQFN exposed pad package (5x5 mm) with surface mount installation. It functions as a three-half-bridge pre-driver, managing commutation and direction for external power MOSFETs.
Feature Summary
- Optimized for PWM current control in single-phase BLDC fans
- Integrated protection against motor stall conditions
- Supports cross-conduction prevention mechanisms
Applications
- Single-phase brushless DC fan systems
- Pulse-width modulated current control circuits
- General purpose motor commutation management
Procurement Notes
Verify the specific suffix METTR-T corresponds to the tape and reel packaging configuration required for automated assembly processes. Confirm that the 28-QFN footprint matches the target PCB layout dimensions. Ensure compatibility with the intended external MOSFET gate drive requirements before finalizing procurement specifications.
Selection Notes
Select this component when designing single-phase BLDC fan drivers requiring integrated pre-drive logic. It is suitable for applications needing robust stall protection and cross-conduction safeguards. Verify that the external power stage can handle the load currents associated with the specific fan motor being driven.
Part Context
This part belongs to the Allegro MicroSystems A4930 series of motor controllers. It serves as a specialized pre-driver for single-phase applications, distinct from the multi-phase A4931 series. The family focuses on minimizing external component count while providing essential safety features for fan motor control.
Replacement Considerations
Direct substitutes include other single-phase BLDC pre-drivers from Allegro or compatible third-party equivalents offering similar voltage ranges and QFN-28 packages. Verify pinout compatibility and thermal performance characteristics before substitution.
