Instructions for Use

1. Power Supply Connection:

   • Connect the input voltage (V_IN) to the input pin.
   • Ensure the input voltage is within the specified range (2.7V to 5.5V).

2. Output Connection:

   • Connect the output pin to the load or circuit requiring a stable 3.3V supply.

3. Ground Connection:

   • Connect the ground (GND) pin to the common ground of your system.

4. Shutdown Function:

   • To enable the shutdown function, connect the SHDN pin to ground.
   • To disable the shutdown function and activate the regulator, leave the SHDN pin floating or connect it to V_IN.

5. Capacitors:

   • Place a 1μF ceramic capacitor close to the input pin (V_IN) and ground to filter input noise.
   • Place a 1μF ceramic capacitor close to the output pin (V_OUT) and ground to stabilize the output.

6. Thermal Considerations:

   • Ensure adequate heat dissipation if operating at high output currents or in high ambient temperatures.
   • The device has thermal shutdown protection, but it should not be relied upon as a primary cooling method.

7. PCB Layout:

   • Use a good PCB layout with wide traces for power and ground lines to minimize voltage drops and improve thermal performance.
   • Keep the input and output capacitors as close as possible to the respective pins to reduce parasitic inductance.

8. Storage and Handling:

   • Store the device in a dry environment within the specified storage temperature range (-65°C to 150°C).
   • Handle with care to avoid static damage; use ESD-safe practices.

By following these instructions, you can ensure reliable operation of the ADM691AR linear regulator in your application.