Products Overview
A5931 THREE PHASE SENSORLESS FAN DRIVERS
Allegro MicroSystems
A5931 and A5931-3:Three Phase Sensorless Fan Drivers
The A5931 is a three phase sensorless BLDC fan driver IC that incorporates sinusoidal drive to minimize audible noise and vibration.
The A5931-3 is the latest in the family with a new feature that allows user to adjust deceleration speed from Force Open Loop to Close Loop.
A flexible closed-loop speed control system is integrated into the IC. This eliminates the requirement for a microprocessor-based system and minimizes programming requirements.
The A5931 devices are available in both commercial and automotive grade.
| Part Number | Type | Output Current | Topology | Mounting Style | Operating Frequency | Moisture Sensitive | Number of Outputs | Maximum Frequency | Operating Temperature | Voltage - Supply | Package Type |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A5931 | 3 Phase | 3A | Step-Down (Buck) | 3 Output | 24.4 kHz | Yes | Lighting | - | -40 °C ~ 105 °C(TA) | 5V ~ 16V | 16-lead TSSOP with exposed thermal pad (LP package), 24-contact 4×4mm QFN with exposed thermal pad (suffix ES) |
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Datasheet Download on Nov, 2021
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