The DRV8818 provides an integrated stepper motor driver solution for printers, scanners, and other automated equipment applications. The device has two H-bridge drivers, as well as microstepping indexer logic to control a stepper motor.
The output driver block for each consists of N-channel power MOSFETs configured as full H-bridges to drive the motor windings.
A simple STEP/DIRECTION interface allows easy interfacing to controller circuits. The mode pins allow for configuration of the motor in full-step, half-step, quarter-step, or eighth-step modes. Decay mode and PWM off time are programmable.
Internal shutdown functions are provided for over current protection, short circuit protection, under-voltage lockout and overtemperature.
The DRV8818 is packaged in a 28-pin HTSSOP package with PowerPAD.
|Part number||Order||Number of full bridges||Vs (Min) (V)||Vs (Max) (V)||Peak output current (A)||Control mode||Control interface||Micro-stepping levels||Features||Package size: mm2:W x L (PKG)||RDS(ON) (HS + LS) (mOhms)||Approx. price (US$)|
||2||8||35||3.5||STEP/DIR||Hardware (GPIO)||8||Current Regulation||28HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 28)||370||1.55 | 1ku|