MAX14870 DC Motor Driver

Analog Devices' MAX14870 motor driver provides a small, low-power and simple solution for driving and controlling brushed DC motors and relays with voltages between 4.5 V and 36 V. Very low driver on-resistance reduces power dissipation.

The driver features a charge-pump-less design for reduced external components and low supply current. Integrated fast-decay current regulation allows user-adjustable peak startup motor currents and requires minimal external components.

A separate voltage-sense input (SNS) reduces current sensing errors due to parasitic trace resistance. The MAX14870 features shoot-through protection and internal free-wheeling diodes that absorb inductive motor currents. Driver outputs are short-circuit-protected from shorts to ground, to the supply, and between M1 and M2. An active-low FAULT output signals thermal overload and overcurrents during fault conditions.

The MAX14870 has PWM and direction-control inputs. See the Function Tables in the data sheet.

The MAX14870 is available in a 12-pin (3 mm x 3 mm) TDFN-EP package and operate over the -40°C to 85°C temperature range.