GENERAL DESCRIPTION
The TMI8122 is a motor driver for wide variety
of end applications. The device integrates an
H-bridge, charge pump regulator, current
sensing and regulation, current proportional
output, and protection circuitry. The charge
pump improves efficiency by allowing for both
high and low side N-channels MOSFETs and
100% duty cycle support.
Integrated current sensing allows for the driver
to regulate the motor current during start up
and high load events. A current limit can be set
with an adjustable external voltage reference. Additionally, the device provides an output
current proportional to the motor load current. This can be used to detect motor stall or
change in load conditions. A low-power sleep mode is provided to
achieve ultra- low quiescent current draw by
shutting down most of the internal circuitry. The device is fully protected from faults and
short circuits, including undervoltage lockout
(UVLO), output over-current protection (OCP), and device thermal shutdown (TSD). Fault
conditions are indicated on nFAULT. 
FEATURES
 N-Channel H-bridge Motor Driver: – Drives One Bidirectional Brushed DC Motor, – Two Unidirectional Brushed DC Motors, – or Other Resistive and Inductive Loads
 Wide 4.5V to 37V Operating Voltage
 10A Peak Current Drive
 Integrated Current Sensing and Regulation
 PH/EN and PWM Input Control Modes
 Cycle-by-cycle or Fixed Off-Time Current
Regulation
 Supports 1.8V, 3.3V, 5V Logic Inputs
 Ultra-Low Power Sleep Mode
 VM Under Voltage Lockout (UVLO)
 Over Current Protection (OCP)
 Thermal Shutdown (TSD)
 Automatic Fault Recovery and Indicator Pin
 Package
- TMI8122: HTSSOP16
APPLICATIONS
 Brushed DC Motors
 Ac charging gun
 Door lock
 Side mirror tilt and fold
 Body control module (BCM)

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