DRV8834 - 具有 32 步分度器或双刷直流电机驱动器的 2.2A 低压步进器（分度器或 PH/EN 控制器）

DRV8834是TI德州仪器公司的一款集成FET的步进栅极驱动器产品，DRV8834是具有 32 步分度器或双刷直流电机驱动器的 2.2A 低压步进器（分度器或 PH/EN 控制器），本站介绍了DRV8834的封装应用图解、特点和优点、功能等，并给出了与DRV8834相关的TI元器件型号供参考。

DRV8834 - 具有 32 步分度器或双刷直流电机驱动器的 2.2A 低压步进器（分度器或 PH/EN 控制器） - 集成FET的步进栅极驱动器 - 步进驱动器 - 德州仪器

产品特性

Dual-H-Bridge Current-Control Motor Driver
- Capable of Driving Two DC Motors or One Stepper Motor
Two Control Modes:
- Built-In Indexer Logic With Simple STEP/DIRECTION Control and Up to 1/32-Step Microstepping
- PHASE/ENABLE Control, With the Ability to Drive External References for > 1/32-Step Microstepping
Output Current 1.5-A Continuous, 2.2-A Peak per H-Bridge (at VM = 5 V, 25°C)
Low RDS(ON): 305-mΩ HS + LS (at VM = 5 V, 25°C)
Wide Power Supply Voltage Range: 2.5 V to 10.8 V
Dynamic tBLANK and Mixed Decay Modes for Smooth Microstepping
PWM Winding Current Regulation and Limiting
Thermally Enhanced Surface-Mount Package

产品应用

Battery-Powered Toys
POS Printers
Video Security Cameras
Office Automation Machines
Gaming Machines
Robotics

产品说明

The DRV8834 provides a flexible motor driver solution for toys, printers, cameras, and other mechatronic applications. The device has two H-bridge drivers, and is intended to drive a bipolar stepper motor or two DC motors.

The output driver block of each H-bridge consists of N-channel power MOSFETs configured as an H-bridge to drive the motor windings. Each H-bridge includes circuitry to regulate or limit the winding current.

With proper PCB design, each H-bridge of the DRV8834 can driving up to 1.5-A RMS (or DC) continuously, at 25°C with a VM supply of 5 V. The device can support peak currents of up to 2.2 A per bridge. Current capability is reduced slightly at lower VM voltages.

Internal shutdown functions with a fault output pin are provided for overcurrent protection, short-circuit protection, undervoltage lockout and overtemperature. A low-power sleep mode is also provided.

The DRV8834 is packaged in a 24-pin HTSSOP or VQFN package with PowerPAD™ (Eco-friendly: RoHS & no Sb/Br).

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
DRV8834	HTSSOP (24)	7.80 mm × 4.40 mm
DRV8834	VQFN (24)	4.00 mm × 4.00 mm

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