Firmware
DRV81X4X-EVM-FIRMWARE — DRV81x4x-EVM FIRMWARE
DRV81x4x-EVM FIRMWARE
DRV81545
55V, 2A 4-channel low-side driver with independent overtemperature and overcurrent protection
Data sheet
DRV81545
- Four-channel integrated low-side switches
- 235mΩ RDS(ON) at 25°C
- Output Stage 55V operating max (60V abs max)
- Integrated catch diodes for flexible decay (external TVS/Zener) as alternate current path on switch turn-off
- Parallel interface for fast switching up to 250kHz
- Fully protected
- User settable current limit
- Independent overtemperature, overcurrent protection for each switch
- Configurable over-current cut-off duration (COD)
- Diagnostic feedback
- MCU fault interrupt signal(nFAULT)
- 4.5V to 55V operating supply voltage range
- Thermally enhanced surface mount package (PWP20)
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 duration (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).
Technical documentation
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View all 2 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | DRV81545 Four-channel Low-side Driver with Integrated Protection Features datasheet | PDF | HTML | 30 Oct 2025 |
| Certificate | DRV81545EVM EU Declaration of Conformity (DoC) | 26 Sep 2025 |
Design & development
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Evaluation board
DRV81545EVM — DRV81545 evaluation module
The DRV81x4x evaluation module (EVM) allows for evaluation of the DRV81545, DRV81646, and DRV81646DGQ devices. The EVM has been programmed to work out of the box and begin driving loads right away. To simplify control and configuration, the EVM is accompanied by a graphical user interface (GUI) (...)
GUI for evaluation module (EVM)
DRV81X4X-EVM-GUI — DRV81X4X-GUI
DRV81X4X-GUI
Supported products & hardware
Products
Solenoid drivers
Hardware development
Evaluation board
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HTSSOP (PWP) | 20 | Ultra Librarian |
Ordering & quality
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