STSPIN948

STSPIN948 is a scalable 4.5A dual full-bridge driver for brushed DC motors. The power stage is designed with high dynamic performance, allowing to achieve of high-frequency PWM control with a precise duty cycle. Each full-bridge is totally independent with a current limiter with an adjustable threshold and OFF-time with slow or mixed decay selection. Two amplifiers with fixed amplification factors are available for current sensing (using an external shunt resistor). The adjustable slew rate guarantees the best trade-off between performances and EMI. The versatile power stage offers several ways of operation for a high level of flexibility. The device offers a complete set of protection features including overcurrent, overtemperature, and low bus voltage detection. Typical applications are stage lighting, factory automation, ATM and money handling machines, textile machines, home appliances, robotics, antenna control, vending machines.

• Five driving methods with full-bridge and dual half-bridge parallel mode
• RDS(ON) HS + LS = 0.36ohm typical
• Adjustable power MOS slew rate, adjustable OFF-time with slow or mixed decay
• Integrated amplifiers with two different embedded current control techniques
• Low consumption standby
• UVLO, overcurrent protection, thermal shutdown protection
• Power stage supply voltage is 5.2V
• Switching frequency is 500KHz maximum
• Ambient temperature range from -40 to 85°C
• Charge pump capacitor is 100nF typical