DRV81545
- Four-channel integrated low-side
switches
- 235mΩ RDS(ON) at 25°C
- Output stage 55V operating maximum (60V absolute maximum)
- Low minimum operating supply voltage range with stable RDS(ON) across voltage: 4.5V
- Selectable current limit from 0.5A up to 3A per channel
- Integrated catch diodes for flexible decay (external TVS/Zener) as an alternate current path on switch turn-off
- Hardware INx interface for fast switching up to 250kHz
- Diagnostic feedback
- MCU fault interrupt signal (nFAULT)
- Thermally enhanced surface mount package (PWP20)
- Protection features
- User settable current limit
- Independent overtemperature, overcurrent protection for each switch
- Configurable over-current cut-off delay (COD)
The DRV81545 is a four-channel low-side switch driver that operates from 4.5V to 55V and supports a wide range of load currents. The device integrates four low-side switches with a RDS(ON) of 235mΩ, each with a freewheeling diode to the VCLAMP pin. This feature allows the user to either recirculate current or connect an external TVS for inductive load turn-off.
The device can be controlled through a hardware GPIO interface. Each channel features individual overtemperature protection, and an analog current limit adjustable with an external resistor on the ILIM pin. There is an optional cut-off delay (COD) configuration which limits the duration of a current-limiting condition on the respective channel, helping to prevent damage to the device or the load. Faults are indicated on a fault output pin (nFAULT).
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 | DRV81545 : 55V Four-Channel Low-side Driver With Integrated Protection Features datasheet (Rev. A) | PDF | HTML | 2025/12/9 | ||
| 證書 | DRV81545EVM EU Declaration of Conformity (DoC) | 2025/9/26 |
設計與開發
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DRV81545EVM — DRV81545 評估模組
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 20 | 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。