Instructions for BD909

1. Input Voltage (VIN):

   • Ensure the input voltage is within the range of 4.5V to 36V.
   • Avoid connecting the input to voltages outside this range to prevent damage to the device.

2. Output Voltage (VOUT):

   • The output voltage can be adjusted between 0.8V and 36V.
   • Use the external resistor network to set the desired output voltage according to the datasheet formula.

3. Output Current (IOUT):

   • The device can provide a continuous output current up to 3A, with a typical value of 2.5A.
   • For higher currents, ensure proper heat dissipation and consider using additional cooling methods.

4. Quiescent Current (IQ):

   • The quiescent current is typically 10μA and can go up to 15μA under no-load conditions.
   • This low quiescent current helps in reducing power consumption in low-power applications.

5. Efficiency (η):

   • The efficiency is typically 92% when operating at VIN=12V, VOUT=5V, and IOUT=1A.
   • Efficiency may vary depending on the specific operating conditions.

6. Switching Frequency (fSW):

   • The default switching frequency is 650kHz.
   • This frequency can be adjusted if necessary by modifying the external components.

7. Operating Temperature (TOPR):

   • The device can operate within a temperature range of -40°C to 85°C.
   • Ensure the ambient temperature does not exceed these limits to avoid thermal shutdown.

8. Storage Temperature (TSTG):

   • The storage temperature range is from -40°C to 150°C.
   • Store the device in a dry and cool environment to maintain its performance.

9. Thermal Shutdown (TSD):

   • The device will automatically shut down if the temperature exceeds 160°C.
   • This feature protects the device from overheating and potential damage.

Additional Notes:

• Always refer to the datasheet for detailed information and specific application notes.
• Ensure proper PCB layout and component selection to optimize performance and reliability.