DRV8805 Texas instruments

DRV8805

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DRV8805

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Описание

The DRV8805 provides an integrated solution for driving unipolar stepper motors. It includes four low-side drivers with overcurrent protection and provides built-in diodes to clamp turnoff transients generated by the motor windings. Indexer logic to control a unipolar stepper motor using a simple step/direction interface is also integrated. Three stepping modes are supported: 2 phase (full-step), 1-2 phase (half-step), and 1-phase (wave drive). In the SOIC (DW) package, the DRV8805 can supply up to 1.5-A (one channel on) or 800-mA (all channels on) continuous output current per channel, at 25°C. In the HTSSOP (PWP) package, it can supply up to 2-A (one channel on) or 1-A (four channels on) continuous output current per channel, at 25°C with proper PCB heatsinking. Internal shutdown functions are provided for overcurrent protection, short-circuit protection, under voltage lockout, and overtemperature, and faults are indicated by a fault output pin. The DRV8805 is available in a 20-pin thermally-enhanced SOIC package and a 16-pin HTSSOP package (Eco-friendly: RoHS & no Sb/Br).

4-Channel Protected Low-Side Driver
- Four NMOS FETs With Overcurrent Protection
- Integrated Inductive Clamp Diodes
Indexer/Translator for Unipolar Stepper Motors
- Simple Step/Direction Interface
- Three Step Modes (2-Phase Full-Step, 1-2-
  Phase Half-Step, 1-Phase Wave Drive)
DW Package: 1.5-A (Single Channel On) /
800-mA (Four Channels On) Maximum Drive
Current per Channel (at 25°C)
PWP Package: 2-A (Single Channel On) /
1-A (Four Channels On) Maximum Drive Current
per Channel (at 25°C, With Proper PCB
Heatsinking)
8.2-V to 60-V Operating Supply Voltage Range
Thermally Enhanced Surface Mount Package

Vs (min) (V)	8.2
Vs ABS (max) (V)	43
Full-scale current (A)	1.5
Peak output current (A)	2.3
RDS(ON) (HS + LS) (mΩ)	500
Control mode	STEP/DIR
Control interface	Hardware (GPIO)
Microstepping levels	2
Rating	Catalog
Operating temperature range (°C)	-40 to 125