Products Overview
A4950 Full-Bridge DMOS PWM Motor Controller
Allegro MicroSystems
A4950 : Full-Bridge DMOS PWM Motor Controller
Designed for pulse width modulated (PWM) control of DC motors, the A4950 is capable of peak output currents to ±3.5 A and operating voltages to 40 V.
Input terminals are provided for use in controlling the speed and direction of a DC motor with externally applied PWM motor control signals. Internal synchronous rectification control circuitry is provided to lower power dissipation during PWM operation.
Internal circuit protection includes overcurrent protection, motor lead short to ground or supply, thermal shutdown with hysteresis, undervoltage monitoring of VBB, and crossover-current protection.
For high ambient operating temperature applications, an automotive grade device is offered (A4950K). The K grade device is tested across extended temperature and voltage ranges to ensure compliance in automotive or industrial applications.
| Part Number | Type | Operating Supply Current | Technology | Mounting Style | Output Current | Moisture Sensitive | Applications | Output Voltage | Operating Temperature | Operating Supply Voltage | Package Type |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A4950 | Full Bridge | 10 mA | DMOS | Surface Mount | 3.5 A | Yes | General Purpose | 3V | -40 °C ~ 125 °C(TA) | 8V ~ 40V | 8-pin SOICN with exposed thermal pad (suffix LJ) |
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Datasheet Download on Mar, 2022
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