The DRV8821 provides a dual microstepping-capable stepper motor controller/driver solution for printers, scanners, and other office automation equipment applications.
Two independent stepper motor driver circuits include four H-bridge drivers and microstepping-capable indexer logic. Each of the motor driver blocks employ N-channel power MOSFETs configured as an H-bridge to drive the motor windings.
A simple step/direction interface allows easy interfacing to controller circuits. Pins allow configuration of the motor in full-step, half-step, quarter-step, or eighth step modes, and the selection of slow or mixed decay modes.
Internal shutdown functions are provided for over current protection, short-circuit protection, undervoltage lockout, and overtemperature.
The DRV8821 is packaged in a 48-pin HTSSOP package (Eco-friendly : RoHS & no Sb/Br).
|Part number||Order||Number of full bridges||Vs (Min) (V)||Vs (Max) (V)||Full-scale current (A)||Peak output current (A)||RDS(ON) (HS + LS) (mOhms)||Control mode||Control interface||Micro-stepping levels||Features||Package size: mm2:W x L (PKG)||Approx. price (US$)|
||4||8||32||1.5||1.5||550||STEP/DIR||Hardware (GPIO)||8||Current Regulation||48HTSSOP: 101 mm2: 8.1 x 12.5 (HTSSOP | 48)||1.76 | 1ku|
||4||8||32||1||1.5||550||Serial||Serial||8||Current Regulation||48HTSSOP: 101 mm2: 8.1 x 12.5 (HTSSOP | 48)||1.76 | 1ku|
Integrated Current Sensing
24HTSSOP: 34 mm2: 4.4 x 7.8 (HTSSOP | 24)
28WQFN: 19 mm2: 3.5 x 5.5 (WQFN | 28)
|1.33 | 1ku|