BQ24620RVAR datasheet by Texas Instruments

BQ24620RVAR Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the BQ24620RVAR to ensure optimal performance?
  A good PCB layout for the BQ24620RVAR involves placing the device close to the battery, using a solid ground plane, and keeping the high-current paths short and wide. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane for the battery voltage.
• How do I select the right sense resistor value for my application?
  The sense resistor value depends on the maximum charge current and the desired accuracy. A good starting point is to use the formula Rsense = 0.05 ohms for a 1A charge current. Then, adjust the value based on the specific requirements of your application.
• What is the purpose of the EN pin, and how do I use it?
  The EN (enable) pin is used to turn the charger on and off. When EN is high, the charger is enabled, and when EN is low, the charger is disabled. This pin can be connected to a GPIO pin of a microcontroller to control the charging process.
• How do I implement a battery temperature monitoring system with the BQ24620RVAR?
  The BQ24620RVAR has a built-in thermistor input (TS pin) that can be connected to a thermistor to monitor the battery temperature. The device can then adjust the charge current based on the temperature reading to prevent overheating or overcooling.
• What are the key differences between the BQ24620RVAR and other similar charger ICs from Texas Instruments?
  The BQ24620RVAR is a high-power charger IC with a wide input voltage range and a high level of integration. It's similar to other TI charger ICs like the BQ24650, but with a higher charge current capability and additional features like battery temperature monitoring.