LMD18245
www.ti.com SNVS110E – APRIL 1998 – REVISED APRIL 2013 LMD18245 3A, 55V DMOS Full-Bridge Motor Driver
Check for Samples: LMD18245 FEATURES DESCRIPTION The
LMD18245
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 multitechnology process used to build the device
combines bipolar and CMOS control and protection
circuitry with DMOS power switches on the same
monolithic structure. The LMD18245 controls the
motor current via a fixed off-time chopper technique. 1 2 DMOS Power Stage Rated at 55V and 3A
Continuous
Low RDS(ON) of Typically 0.3О© per Power
Switch
Internal Clamp Diodes
Low-loss Current Sensing Method
Digital or Analog Control of Motor Current
TTL and CMOS Compatible Inputs
Thermal Shutdown (Outputs Off) at TJ = 155В°C
Overcurrent Protection …
