Features
Drives a DC Motor ｏｒ Other Loads
Rdson HS + LS: 460mΩ
3.6-A Maximum Drive Current
VM: 6.5V to 45V Operating Voltage Range
PWM Control Interface
Low-Power Ｓｌｅｅｐ Mode
Small Package ａｎｄ Footprint
8-Pin SOP With Power PAD 4.9 × 6.0 mm eSOP-8L
Short-Circuit Protection (OCP)
Over-Temperature Protection(OTP)
Under-Voltage Protection(UVLO)
Automatic Fault Recovery
Description
The AWD8870STR provides an integrated motor driver solution for printers, appliances, industrial
equipment, ａｎｄ other small machines. The device can supply up to 3.6A of output current. It operates on a motor power supply voltage from 6.5V to 45V. The output driver block consists of N-channel power MOSFETs configured as an H-bridge to drive the motor winding. The inputs can be pulse width modulated (PWM) to control motor speed, using a choice of current-decay modes. Setting both inputs low enters a low-power ｓｌｅｅｐ mode. The AWD8870STR device features integrated current regulation, based on the analog input VREF ａｎｄ the voltage on the ISEN pin, which is proportional to motor current through an external sense resistor. The ability to limit current to a known
level can significantly reduce the system power requirements ａｎｄ bulk capacitance needed to
maintain stable voltage, especially for motor startup ａｎｄ stall conditions.
Internal shutdown functions are provided for Overcurrent protection (OCP), Short-circuit protection,
Under-voltage lockout (UVLO), ａｎｄ Overtemperature protection (TSD). When the fault condition is removed, the device automatically resumes normal operation.
