A3950DS A3950 DMOS Full-Bridge Motor Driver is a product designed for PWM (pulse width modulation) control of DC motors, capable of peak output currents of ±2.8 A and operating voltages of 36 V. PHASE and ENABLE input terminals are provided for use in controlling the speed and direction of a DC motor with externally applied PWM control signals. Internal synchronous rectification control circuitry is provided to lower power dissipation during PWM operation. Internal circuit protection includes motor lead short-to-supply / short-to- ground, thermal shutdown with hysteresis, undervoltage monitoring of VBB and VCP, and crossover-current protection. A3950 is supplied in a thin profile (<1.2 mm overall height) 16-pin TSSOP package with exposed thermal pad (package LP). It is lead (Pb) free with 100% matte tin leadframe plating. Use the following complete part numbers when ordering:
The Allegro A3950 is a DMOS full-bridge motor driver designed for PWM control of DC motors. It supports peak output currents up to +2.8 A and operating voltages up to 36 V. The device includes internal synchronous rectification to lower power dissipation and features comprehensive protection against motor lead shorts, thermal shutdown, and undervoltage conditions. It is supplied in a 16-pin TSSOP package with an exposed thermal pad.
| Peak Output Current | +2.8 A |
|---|---|
| Operating Voltage | 36 V |
| Package Type | 16-pin TSSOP |
The device supports operating voltages up to 36 V.
It is supplied in a 16-pin TSSOP package with an exposed thermal pad.
It turns off the outputs, drives the NFAULT pin low, and starts a 1.2 ms fault timer before attempting to resume.