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).
技術資料
設計および開発
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DRV8804EVM — DRV8804 評価モジュール
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 — ロー・サイド 0.5A 8 チャネル・デジタル出力モジュール、PLC 用
パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
---|---|---|
HTSSOP (PWP) | 16 | Ultra Librarian |
SOIC (DW) | 20 | Ultra Librarian |
購入と品質
- RoHS
- REACH
- デバイスのマーキング
- リード端子の仕上げ / ボールの原材料
- MSL 定格 / ピーク リフロー
- MTBF/FIT 推定値
- 使用原材料
- 認定試験結果
- 継続的な信頼性モニタ試験結果
- ファブの拠点
- 組み立てを実施した拠点
推奨製品には、この TI 製品に関連するパラメータ、評価基板、またはリファレンス デザインが存在する可能性があります。