FEATURES
⚫ H-Bridge Motor Driver
Drives One DC Motor, One Winding of a Stepper
Motor, or Other Loads
⚫ Wide 6.8V to 45V Operating Voltage
⚫ 3.6-A Peak Current Drive
⚫ PWM Control Interface
⚫ Integrated Current Regulation
⚫ Low-Power Sleep Mode
⚫ VM Undervoltage Lockout (UVLO)
⚫ Overcurrent Protection (OCP)
- Retry after OCP: TMI8870
- Latch after OCP: TMI8870B
⚫ Thermal Shutdown (TSD)
⚫ Automatic Fault Recovery
⚫ ESOP8 Small Package and Footprint

APPLICATIONS
⚫ Printers
⚫ Appliances
⚫ Industrial Equipment
⚫ Other Mechatronics Applications

GENERAL DESCRIPTION
The TMI8870/B device are the brushed-DC motor
drivers for printers, appliances, industrial
equipment, and other small machines. Two logic
inputs control the H-bridge driver, which consists of
four N-channel MOSFETs that can control motors
bidirectionally with up to 3.6-A peak current. The
inputs can be pulse width modulated (PWM) to
control motor speed, using a choice of currentdecay modes. Setting both inputs slow enter a lowpower sleep mode.
The TMI8870/B devices feature 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.
The devices are fully protected from faults and
short circuits, including UVLO，OCP, and TSD.