LTC4100EG datasheet by Linear Technology

LTC4100EG Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the LTC4100EG can handle?
  The LTC4100EG can handle input voltages up to 36V, but it's recommended to keep it below 30V for optimal performance and reliability.
• How do I ensure the LTC4100EG's internal oscillator is stable and accurate?
  To ensure the internal oscillator is stable and accurate, make sure to decouple the VCC pin with a 0.1uF ceramic capacitor and keep the layout clean and symmetrical around the oscillator pins.
• What is the purpose of the RUN pin, and how do I use it?
  The RUN pin is an active-high enable input that allows the user to turn the device on and off. Connect it to a logic high (e.g., VCC) to enable the device, and connect it to a logic low (e.g., GND) to disable it.
• How do I configure the LTC4100EG for a specific battery chemistry, such as Li-ion or NiMH?
  The LTC4100EG has a programmable charge voltage and current limit. For Li-ion batteries, set the charge voltage to 4.2V per cell, and for NiMH batteries, set it to 1.45V per cell. Adjust the current limit according to the battery's specifications.
• What is the purpose of the FAULT pin, and how do I use it?
  The FAULT pin is an open-drain output that indicates a fault condition, such as overvoltage, undervoltage, or overtemperature. Connect it to a pull-up resistor and a microcontroller input to monitor the device's status.