Motor chip


Chip Introduction

The SS8847E is a dual bridge motor driver which has two H-bridge drivers, and can drive two DC brush motors, a bipolar stepper motor, solenoids, or other inductive loads. It operates from 2.7V to 15V, and can deliver load current up to 1.0A per channel. The output driver block of each H-bridge consists of P+N-channel power MOSFETS configured as an H-bridge to drive the motor windings. Each H-bridge includes circuitry to regulate or limit the winding current. The internal safety features include sinking and sourcing current limits implemented with external sensors, under-voltage lockout, over current protection (OCP) and thermal shutdown. An over-temperature output flag is available to indicate thermal shutdown.

 The SS8847E is packaged in 16-pin, 5.0mm×6.4mm ETSSOP with an exposed thermal pad on the back.

Chip characteristics

  •  Wide supply voltage range: 2.7V to 15V

  • Two internal full-bridge drives

  • Low quiescent current: 1.1mA

  • Low sleep current: 1μA

  • Thermal shutdown and undervoltage lockout protection

  • Overcurrent Protection (OCP)

  • Overheating output flag

  • Thermally enhanced surface mount package

  • Low MOSFET on-resistance (HS: 650mΩ; LS: 350 mΩ)

Market applications