DRV8804
The following Figure shows how two DRV81646 devices can be connected in daisy chain to leverage GPIO/ isolation saving. SDO pin of one device is fed to the SDI pin of the following device in the chain
To write to two devices , 8 bits of data need to be written as shown in Figure . Note SDO is sent out on Negedge of SCLK. SDO is ready to be sampled on following posedge of SCLK. The value on SDI pin is also sampled on posedge of SCLK. Note Latch need not be brought low to initiate a shift in of data. A posedge of Latch is needed to Latch the data shifted in to Outputs.
The DRV8804 provides a 4-channel low-side driver with overcurrent protection. The device has built-in diodes to clamp turnoff transients generated by inductive loads and can be used to drive unipolar stepper motors, DC motors, relays, solenoids, or other loads.
In the SOIC (DW) package, the DRV8804 can supply up to 1.5A (one channel on) or 800mA (all channels on) continuous output current per channel, at 25°C. In the HTSSOP (PWP) package, the device can supply up to 2A (one channel on) or 1A (four channels on) continuous output current per channel, at 25°C . In the SOT-23-THN (DYZ) package, the DRV8804 can supply up to 1.9A (one channel on) or 900mA (all channels on) continuous output current per chanel, at 25°C with proper PCB heatsinking.
A serial interface is provided including a serial data output, which can be daisy-chained to control multiple devices with one serial interface.
Internal shutdown functions are provided for overcurrent protection, short-circuit protection, undervoltage lockout, and overtemperature, and faults are indicated by a fault output pin.
The DRV8804 is available in a 20-pin, thermally-enhanced SOIC package , 16-pin HTSSOP package and 16-pin SOT-23-THN package (Eco-friendly: RoHS & no Sb/Br).
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | DRV8804 Quad Serial Interface Low-Side Driver IC datasheet (Rev. G) | PDF | HTML | 2024年 12月 10日 |
| Application note | Understanding Motor Driver Current Ratings (Rev. A) | PDF | HTML | 2024年 7月 5日 | |
| Application note | Using DRV to Drive Solenoids (Rev. A) | PDF | HTML | 2022年 4月 24日 | |
| Application note | How to Drive Unipolar Stepper Motor with the DRV8xxx | PDF | HTML | 2021年 12月 3日 | |
| Application note | Best Practices for Board Layout of Motor Drivers (Rev. B) | PDF | HTML | 2021年 10月 14日 | |
| Application note | Calculating Power Dissipation for a H-Bridge or Half Bridge Driver (Rev. A) | PDF | HTML | 2021年 7月 22日 | |
| Technical article | Drive unipolar stepper motors as bipolar stepper motors with a simple wiring recon | PDF | HTML | 2020年 4月 9日 | |
| Application note | PowerPAD™ Thermally Enhanced Package (Rev. H) | 2018年 7月 6日 | ||
| User guide | DRV8803-04-05-06 EVM GUI (Rev. B) | 2017年 4月 26日 | ||
| More literature | TM4C123x Stepper Motor Control Product Summary | 2015年 7月 6日 | ||
| Application brief | PowerPAD™ Made Easy (Rev. B) | 2004年 5月 12日 |
設計與開發
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DRV8804EVM — DRV8804 評估模組
The DRV8804 evaluation module consists of a quad low-side motor driver with serial control interface that can be used to drive a unipolar stepper motor, up to 4 DC motors or other loads like solenoids. With the DRV8804EVM, designers can quickly and easily evaluate the performance of DRV8804 motor (...)
TIDA-00236 — 適用 PLC 的低壓側 0.5A 八通道數位輸出模組
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 16 | Ultra Librarian |
| SOIC (DW) | 20 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
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。