A good PCB layout for the DS1859B-050+ involves keeping the input and output traces separate, using a solid ground plane, and placing the device close to the power supply. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
The DS1859B-050+ requires a single 5V power supply. It's recommended to power the device with a low-noise, low-ripple power supply. The power sequencing requirements are not critical, but it's recommended to power the device after the input voltage has stabilized.
The recommended input voltage range for the DS1859B-050+ is 4.5V to 5.5V. The output voltage is regulated to 5V ±2% for input voltages within this range. Operating the device outside of this range may affect the output voltage accuracy and stability.
The output voltage tolerance of the DS1859B-050+ is specified as ±2%. This means that the output voltage can vary by up to 2% of the nominal 5V output voltage, resulting in an output voltage range of 4.9V to 5.1V.
The thermal derating curve for the DS1859B-050+ indicates that the device's output current capability decreases as the ambient temperature increases. For example, the device can deliver up to 1A of output current at 25°C, but this decreases to 0.5A at 85°C. It's essential to consider the thermal derating curve when designing the system to ensure the device operates within its specified limits.
DS1859B-050+ datasheet
by Maxim Integrated Products
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