GXD8870

1 Basic Performance
• Independent H-bridge motor - drives a single DC motor, a single stepper motor winding, or other loads
• Operating voltage range: 6.5V~33V
• High and low side conduction resistance: 380m Ω (typical value)
• Peak operating current: 4A
• Continuous operating current: 2A
• Static working current: 3mA
• Integrated current regulation mode
• Supports logic inputs of 1.8V, 3.3V, and 5V
• Integrated low electromagnetic interference (EMI) spread spectrum clock
• Protection features: undervoltage locking, overcurrent protection, overheating protection, automatic fault recovery
• Pulse width modulation control interface (IN1/IN2)
• Package information:

2 Application Scenarios
• Brushed DC motor, solenoid and relay
• Electric toys
• Electric toothbrush
• Smart lock
• Medical equipment

3.Description
GXM8870 is an integrated motor driver with four N-channel power transistors, a charge pump regulator circuit, and a protection circuit. The charge pump integrates capacitors to reduce the size of the charge pump solution on the PCB.  
The GXM8870 has an integrated current regulation function, which is based on the analog input VREF and the voltage of the ISEN pin (proportional to the current flowing through the external resistor). This device can limit the current to a certain level, significantly reducing power consumption.  
GXM8870 provides comprehensive protection against faults and short circuits, including undervoltage lockout (UVLO), overcurrent protection (OCP), and overheat protection (TSD). After troubleshooting, the chip will automatically resume normal operation.

Ordering Information

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