Product Summary

The LMD18245T full-bridge power amplifier incorporates all the circuit blocks required to drive and control current in a brushed type DC motor or one phase of a bipolar stepper motor. The multi-technology process used to build the device combines bipolar and CMOS control and protection circuitry with DMOS power switches on the same monolithic structure. The LMD18245T controls the motor current via a fixed off-time chopper technique. An all DMOS H-bridge power stage delivers continuous output currents up to 3A (6A peak) at supply voltages up to 55V. The DMOS power switch LMD18245T features low RDS(ON) for high efficiency, and a diode intrinsic to the DMOS body structure eliminates the discrete diodes typically required to clamp bipolar power stages. An innovative current sensing method eliminates the power loss associated with a sense resistor in series with the motor. The applications of the device include n Full, half and microstep stepper motor drives, Stepper motor and brushed DC motor servo drives and Automated factory, medical and office equipment.

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LMD18245T
LMD18245T
National Semiconductor (TI)
Motor / Motion / Ignition Controllers & Drivers
Data Sheet
0-40: $9.13
40-60: $8.82
60-100: $6.63
100-260: $6.54
LMD18245T/LF15
LMD18245T/LF15
National Semiconductor (TI)
Motor / Motion / Ignition Controllers & Drivers
Data Sheet
0-400: $9.61
LMD18245T/NOPB
LMD18245T/NOPB
National Semiconductor (TI)
Motor / Motion / Ignition Controllers & Drivers H-Bridge Motor Driver W/ Pwm
Data Sheet
0-1: $10.85
1-10: $9.88
10-25: $9.13
25-50: $8.82