BQ24702PWRG4 datasheet by Texas Instruments

BQ24702PWRG4 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance?
  Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow the guidelines in the application note 'BQ24702 PCB Layout Guidelines' (SLUA945) for optimal performance and thermal management.
• How do I select the right inductor for my design?
  The selection of the inductor depends on the specific application requirements, such as the input voltage, output voltage, and current rating. TI provides an inductor selection guide in the datasheet, and also recommends using the WEBENCH Power Designer tool to find suitable inductors.
• What is the maximum ambient temperature for reliable operation?
  The BQ24702PWRG4 is rated for operation up to 105°C ambient temperature, but it's recommended to derate the device's performance at higher temperatures to ensure reliable operation. Consult the datasheet for thermal derating guidelines.
• How do I implement overcurrent protection (OCP) and short-circuit protection (SCP)?
  The BQ24702PWRG4 has built-in OCP and SCP features. To implement these features, connect the OCP pin to a resistor divider network that sets the OCP threshold, and connect the SCP pin to a capacitor that sets the SCP delay time. Consult the datasheet for specific implementation guidelines.
• What is the recommended input capacitor type and value?
  The recommended input capacitor type is a low-ESR ceramic capacitor, such as an X5R or X7R type. The value depends on the specific application requirements, but a typical value is 10uF to 22uF. Consult the datasheet for specific guidelines.