AW8646QNR

AW8646 Dual H-Bridge Stepper Motor Driver

Datasheet :

Product details

Motor Type	Stepper Motor
H bridge	2
Micro Step	1/32
VDD (Min) (V)	3
VDD (Max) (V)	12
Peak Current (A)	1.4
Ron (mΩ)	730
Control Mode	STEP/DIR
CTRL IF	Hardware(GPIO)
Temperature	-40℃~85℃
Function	Current Regulation
Package (mm)	QFN 4X4-24L

QFN 4X4-24L

3V to 12V Supply Voltage Range 1.4A Full Scale current per H-Bridge Rdson HS + LS: Typical 0.73Ω Support up to 1/32th Microstepping Decay Modes supported: Adaptive Decay Technology Mixed Decay Slow Decay Fast Decay Support 1.8V Logic Level Programmable off-time 10,20, or 30s off-time Programmable Motor Torque Current Short-Circuit Protection, Over-Temperature Protection, Under-Voltage Protection Fault Condition Indication QFN 4mm X4mm X0.85mm-24L package

The AW8646 is a flexible microstepping stepper motor driver. It is designed to operate bipolar stepper motor with up to 1/32th step mode for mobile phones, tablets, and other automated equipment applications. The device can be controlled by simple STEP/DIR interface allowing easy interfacing to controller circuits. The output block of each H-bridge driver consists of N-channel and P-channel power MOSFETS configured as full H-bridges to drive the motor windings. Pins allow configuration of the motor in full-step up to 1/32th step modes. Decay mode is configurable so that adaptive decay, slow decay, fast decay, and mixed decay can be used. A low power sleep mode is provided to achieve very-low quiescent current draw. AW8646 is capable of driving up to 1.4A (Full Scale) or 1A (RMS) current per H-Bridge The device offers a complete set of protection features including UVLO, overcurrent protection, short circuit protection, and over temperature. Fault conditions are indicated via the nFAULT pin

Technical documentation

	Type	Title			Date
	Product Design Guide	AW8646QNR_Hardware_Design_Guide			2023-04-28
	Datasheet	DS_AW8646_EN_V1.6			2023-04-23

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Software development

APPLICATION SOFTWARE&FRAMEWORK

AW8646_GUI_V1.1.0.zip — Stepper motor drive GUI debugging tool

AW8646QNR/AW8646GQNR Stepper motor driver chip, based on the stepper motor driver evaluation board of PC side GUI debugging tool. The driving effect of the chip on the stepper motor can be evaluated quickly.

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