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.
| Vs (Min) (V) |
| Vs (Max) (V) |
| # of Full Bridges |
| RDS(ON) (HS + LS) (mOhms) |
| RMS Output Current (A) |
| Peak Output Current (A) |
| Current Regulation Levels |
| Control I/F |
| Additional Features |
| Pin/Package |
| Rating |
| Operating Temperature Range (C) |
| DRV8818 | DRV8811 | DRV8821 |
|---|---|---|
| 8 | 8 | 8 |
| 35 | 38 | 32 |
| 2 | 2 | 4 |
| 370 | 1000 | 550 |
| 1.75 | 1.4 | 1 |
| 2.5 | 1.9 | 1.5 |
| 8 | 8 | 8 |
| Indexer | Indexer | Indexer |
| 1/8 Microstepping P2P w/ DRV8811 | 1/8 Microstepping P2P w/ DRV8818 | On-chip Microstepping |
| 28HTSSOP | 28HTSSOP | 48HTSSOP |
| Catalog | Catalog | Catalog |
| -40 to 85 | -40 to 85 | -40 to 85 |
| Order Now | Order Now | Order Now |
