Texas Instruments provides a recommended PCB layout in the DRV5023 application note (SLVAE67). It's essential to follow the layout guidelines to minimize noise, ensure proper thermal dissipation, and optimize the device's performance.
The sense resistor value depends on the desired current sense accuracy, the maximum current to be measured, and the voltage supply. TI provides a sense resistor calculation tool (SWRA634) to help determine the optimal value. Additionally, the datasheet provides guidelines for selecting the sense resistor.
The maximum allowed voltage on the VCC pin is 5.5V. Exceeding this voltage can damage the device. It's essential to ensure the voltage supply is within the recommended operating range of 4.5V to 5.5V.
The DRV5023 has built-in overcurrent protection and fault detection features. The device provides an FAULT pin that indicates an overcurrent or overtemperature condition. The datasheet provides details on how to configure and respond to fault events.
The thermal impedance of the DRV5023AJEDBZRQ1 package (QFN-16) is 24.5°C/W (junction-to-ambient) and 10.5°C/W (junction-to-case). This information is essential for thermal design and heat sink selection.