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) |
-
Datasheet Download on Nov, 2021
Main Products
Allegro Micro Systems
A33115 Precision TMR Angle Sensor
360° angle sensor that provides high-resolution angular position information.
Current Sensor
Integrated shield virtually eliminates capacitive coupling from current conductor to die, greatly suppressing output noise due to high dv/dt transients.
A31010 Unidirectional Linear Hall-Effect Sensors
Provide a voltage output proportional to the applied magnetic field.
A89506 Full-Bridge PWM Gate Driver
Ideal for DC motors and actuators in conventional, hybrid, and electric vehicles.
Brushless DC Drivers
Engineered to meet market challenges, delivering cost-optimized systems and improved time-to-market.
Brush DC Drivers
Broad portfolio of safe and robust brush DC solutions with both integrated and MOSFET gate drivers.
Stepper Motor Drivers
Delivers quiet, efficient, smooth motion to minimize noise and vibration in stepper motor designs.
Sensor Interface ICs
Allegro’s interface sensor ICs for speed and pressure sensors deliver fast and accurate output ideal for today’s demanding, space-constrained automotive and industrial applications.
Industrial Regulators
Allegro’s multiple-output DC/DC regulators enable smart and robust industrial designs.
Devoted to Excellent Professional Technical Support Throughout the Supply Chain
Everstar currently serves global semiconductor brands, including Allegro, AOS, Vincotech, and SHARP photocoupler, to offer products with complementary features. The products we carried integrate magnetic sensor chips, motor driver chips, power components, power modules, etc., to offer an extensive hardware infrastructure system design solution. The product applications focus on cloud server power suppliers, server cooling fan motor drivers, automotive power supply systems, LED lights, industrial motors, etc., targeted to broadly cover our customers' needs.
