The SS6343M product is a three-phase brushless DC motor driver. They integrated three half-bridges, including six N-channel power MOS FETs, as well as a pre-driver and gate drive power supply.
The SS6343M provides enable and PWM inputs for each 1/2-H bridge. The SS6343M is capable of continuously delivering 2.8A of drive current (depending on temperature and PCB conditions) with a peak current protection threshold of 7A. It uses an internal charge pump to generate gate drive supply voltage for the high-side MOSFETs and uses trickle charge circuitry to maintain sufficient gate drive voltage to operate at 100% duty cycle. Integrated safety features include thermal shutdown, undervoltage lockout (UVLO), and overcurrent protection (OCP).
The SS6343M is available in a 24-pin 3mmx4mm QFN package with exposed heat discs.
3V-18V operating voltage range
Three integrated half-bridge drives
2.8A continuous output current capability
MOSFET on-resistance: 70mΩ per MOS
SS6343M: ENBL&PWM control interface
Embedded 3.3V/100mA LDO regulated power supply
The built-in charge pump power supply supports PWM 100% duty cycle operation
Automatic synchronous rectification function
Integrated undervoltage lockout (UVLO) and overtemperature protection
Overcurrent protection threshold up to 7A peak
Package type: QFN-24 (3mmx4mm)