BA6950FS, BA6951FS are reversible motor drivers that can directly drive forward and reverse rotations brushes motors. Motor rotating speed can be optionally set through the control terminal, and the motor can be driven at a constant speed by the built-in current feedback amplifier.
This technical note describes the BA6951FS reversible motor driver, which can drive brush motors in forward, reverse, stop (idling) and braking modes. It includes features such as constant‑speed operation via a current‑feedback amplifier, built‑in thermal shutdown, and current limiting.
The document lists absolute maximum ratings, operating conditions, detailed electrical characteristics, pin‑out tables, recommended external components, and usage notes such as protection against reverse polarity and thermal design considerations.
| Supply voltage VCC (max) | 8 V |
|---|---|
| Supply voltage VB (max) | 18 V |
| Output current max (BA6950FS / BA6951FS) | 0.4 A / 0.8 A |
| Operating temperature range | -20 °C to 75 °C |
| Power dissipation Pd | 0.813 W |
| Maximum junction temperature | 150 °C |
It provides four modes: forward, reverse, stop (idling), and braking.
A value of about 33 pF is recommended for C1.
Use a capacitor smaller than 0.47 µF between output and GND.