Instructions for Use:

1. Power Supply:

   • Ensure the supply voltage (Vcc) is within the specified range of 2.7V to 5.5V.
   • Use appropriate input filtering capacitors (typically 1μF to 10μF) to stabilize the input voltage.

2. Output Configuration:

   • For adjustable output voltage, connect a resistor divider between Vout and ADJ pin. The formula for calculating the output voltage is: [ V_ = 1.24 left(1 + fracright) ]
   • For fixed output voltages, use the appropriate fixed voltage version of the regulator.

3. Output Capacitor:

   • Use a 1μF to 10μF capacitor on the output to improve stability and transient response.

4. Thermal Management:

   • Ensure adequate heat dissipation if operating at high output currents or in high ambient temperatures.
   • Consider using a heatsink if the junction temperature exceeds 85°C.

5. PCB Layout:

   • Place the input and output capacitors as close as possible to the regulator to minimize parasitic inductance.
   • Ensure good ground connections to reduce noise and improve performance.

6. Protection:

   • The LT1139ACN#PBF includes internal thermal shutdown and current limiting features to protect against overcurrent and overheating conditions.

7. Storage:

   • Store the device in a dry, cool environment to prevent damage from moisture and extreme temperatures.