Instructions for Using L4936

1. Input Voltage (VIN):

   • Ensure the input voltage is within the range of 2.5V to 40V.
   • Use appropriate filtering capacitors (e.g., 10μF) to stabilize the input voltage.

2. Output Voltage (VOUT):

   • The output voltage can be adjusted from 1.2V to 35V using external resistors.
   • Use the formula: ( V_ = V_ left(1 + fracright) ), where ( V_ = 1.24V ).

3. Output Current (IOUT):

   • The maximum output current is 1.5A. Ensure the load does not exceed this limit to avoid overheating or damage.

4. Quiescent Current (IQ):

   • The quiescent current is typically 80μA at 5V input and 5V output. This is important for low-power applications.

5. Dropout Voltage (VD):

   • The dropout voltage is typically 0.7V at 150mA output current. Ensure the input voltage is at least 0.7V higher than the desired output voltage.

6. Reference Voltage (VREF):

   • The internal reference voltage is 1.24V, which is used for setting the output voltage.

7. Power Dissipation (PD):

   • The maximum power dissipation is 15W. Use adequate heatsinking if operating near this limit.

8. Operating Temperature (TOPR):

   • The device can operate from -40°C to 125°C. Ensure proper cooling in high-temperature environments.

9. Storage Temperature (TSTG):

   • Store the device between -65°C and 150°C.

10. Capacitor Selection:

    • Use ceramic capacitors for high-frequency bypassing and electrolytic capacitors for bulk capacitance.
    • Typical values for input and output capacitors are 10μF and 100nF, respectively.

11. PCB Layout:

    • Place the input and output capacitors as close as possible to the IC to minimize parasitic inductance.
    • Ensure good thermal management by providing a large copper area or heatsink.

12. Protection:

    • Consider adding reverse polarity protection and overvoltage protection circuits to safeguard the IC and connected components.