DS1643-85+ datasheet by Maxim Integrated Products

DS1643-85+ Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the DS1643-85+?
  The recommended power-up sequence is to apply VCC first, followed by VBAT. This ensures that the internal voltage regulator is powered up before the battery voltage is applied.
• How do I ensure accurate temperature measurements with the DS1643-85+?
  To ensure accurate temperature measurements, it is recommended to use a thermistor with a high accuracy rating (e.g., ±0.1°C) and to calibrate the temperature sensor using the DS1643-85+'s built-in calibration registers.
• What is the maximum current that can be drawn from the VCC pin?
  The maximum current that can be drawn from the VCC pin is 10mA. Exceeding this current may cause the internal voltage regulator to overheat or malfunction.
• Can I use the DS1643-85+ with a rechargeable battery?
  Yes, the DS1643-85+ can be used with a rechargeable battery. However, it is recommended to use a battery with a low self-discharge rate to ensure accurate battery voltage monitoring.
• How do I reset the DS1643-85+ to its default settings?
  The DS1643-85+ can be reset to its default settings by applying a low pulse (≤ 1.5V) to the RST pin for at least 100ns.