LTC4065LEDC-4.1#TRMPBF datasheet by Linear Technology

LTC4065LEDC-4.1#TRMPBF Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the LTC4065LEDC-4.1?
  The maximum input voltage that can be applied to the LTC4065LEDC-4.1 is 18V, but it's recommended to keep it below 15V for reliable operation.
• How do I ensure the LTC4065LEDC-4.1 is in a low-power state when not in use?
  To ensure the LTC4065LEDC-4.1 is in a low-power state when not in use, pull the EN pin low. This will put the device in shutdown mode, reducing the quiescent current to less than 1μA.
• What is the recommended layout and placement for the LTC4065LEDC-4.1 to minimize EMI and noise?
  To minimize EMI and noise, it's recommended to place the LTC4065LEDC-4.1 close to the battery, use a solid ground plane, and keep the input and output traces short and away from each other. Additionally, use a ferrite bead or a small inductor in series with the input to filter out high-frequency noise.
• Can I use the LTC4065LEDC-4.1 with a rechargeable battery, and if so, what precautions should I take?
  Yes, the LTC4065LEDC-4.1 can be used with a rechargeable battery. However, it's essential to ensure the battery is properly protected against overcharge and over-discharge. The LTC4065LEDC-4.1 has built-in overcharge protection, but you may need to add additional circuitry to protect against over-discharge.
• How do I calculate the charge current for the LTC4065LEDC-4.1, and what are the limitations?
  The charge current for the LTC4065LEDC-4.1 can be calculated using the formula: ICHG = (VIN - VBAT) / RPROG. The maximum charge current is limited to 1.5A, and the minimum charge current is limited to 10mA. Additionally, the charge current should be limited to 1C or less to prevent overheating and damage to the battery.