DRV8844
- Quad 1/2-H-Bridge DC Motor Driver
- Can Drive Four Solenoids, Two DC Motors, One Stepper Motor, or Other Loads
- Full Individual Half Bridge Control
- Low MOSFET On-Resistance
- 2.5A Maximum Drive Current at 24V, 25°C
- Floating Input Buffers Allow Dual (Bipolar) Supplies (up to ±30V)
- Built-In 3.3V, 10mA LDO Regulator
- Industry Standard IN/IN Digital Control Interface
- 8V to 60V Operating Supply Voltage Range
- Outputs Can Be Connected in Parallel
- Thermally Enhanced Surface Mount Package
The DRV8844 provides four individually controllable 1/2-H-bridge drivers. The device can be used to drive two DC motors, one stepper motor, four solenoids, or other loads. The output driver channel for each channel consists of N-channel power MOSFET’s configured in a 1/2-H-bridge configuration.
The DRV8844 can supply up to 2.5A peak or 1.75A RMS output current per channel (with proper PCB heatsinking at 24V and 25°C) per H-bridge.
Separate inputs to independently control each 1/2-H-bridge are provided. To allow operation with split supplies, the logic inputs and nFAULT output are referenced to a separate floating ground pin.
Internal shutdown functions are provided for over current protection, short circuit protection, undervoltage lockout, and overtemperature.
The DRV8844 is available in a 28-pin HTSSOP package with PowerPAD™ (Eco-friendly: RoHS & no Sb/Br).
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | DRV8844 Quad Half-Bridge Driver IC datasheet (Rev. E) | PDF | HTML | 2025/7/29 | ||
| 證書 | DRV8844AEVM EU Declaration of Conformity (DoC) | 2025/8/7 | ||||
| 應用說明 | Understanding Motor Driver Current Ratings (Rev. A) | PDF | HTML | 2024/7/5 | |||
| 應用說明 | How to Drive Unipolar Stepper Motor with the DRV8xxx | PDF | HTML | 2021/12/3 | |||
| 應用說明 | Best Practices for Board Layout of Motor Drivers (Rev. B) | PDF | HTML | 2021/10/14 | |||
| 應用說明 | Calculating Power Dissipation for a H-Bridge or Half Bridge Driver (Rev. A) | PDF | HTML | 2021/7/22 | |||
| 應用說明 | Methods to Configure Current Regulation for Brushed and Stepper Motors (Rev. B) | PDF | HTML | 2021/1/19 | |||
| 應用說明 | PowerPAD™ Thermally Enhanced Package (Rev. H) | 2018/7/6 | ||||
| 更多文件說明 | TM4C123x Stepper Motor Control Product Summary | 2015/7/6 | ||||
| Application brief | PowerPAD™ Made Easy (Rev. B) | 2004/5/12 |
設計與開發
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DRV8844AEVM — DRV8844A 評估模組
DRV8844EVM — DRV8844 評估模組
SLVC445 — DRV8844 Software
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 28 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。