LT1084-3.3

Power Dissipation............................... ........ ........ ....... Internally Limited
Input Voltage (Note 1) ..........................................................30V
Operating Input Voltage3.3V, 3.6V Devices ...........................20V
5V Devices ................................................................ ...........20V
12V Devices ...................................................... ........ ..........25V
Operating Junction Temperature Range"C" Grades
Control Section ....................................................0°C to 125°C
Power Transistor ............................. ...................0°C to 150°C
"M" Grades
Control Section ........................................... ..55°C to 150°C
Power Transistor ......................... ........ ........55°C to 200°C
Storage Temperature Range ................. .......65°C to 150°C
Lead Temperature (Soldering, 10 sec)........................... .300°C

Note 1: Although the devices maximum operating voltage is limited, (20V for a 3V, 5V device, and 25V for a 12V device) the devices are guaranteed to withstand transient input voltages up to 30V. For input voltages greater than the maximum operating input voltage some degradation of specifications will occur. For input/output voltage differentials greater than 15V, a minimum external load of 5mA is required to maintain regulation

The LT1083 series of positive adjustable regulators are designed to provide 3A, 5A and 7.5A with higher efficiency than currently available devices. All internal circuitry is designed to operate down to 1V input to output differential and the dropout voltage is fully specified as a function of load current. Dropout is guaranteed at a maximum of 1.5V at maximum output current, decreasing at lower load currents. On-chip trimming adjusts the output voltage to1%. Current limit is also trimmed, minimizing the stress on both the regulator and power source circuitry under overload conditions.The 1083 series devices are pin compatible with older three-terminal regulators.

A 10mF output capacitor is required on these new devices; however, this is usually included in most regulator designs. Unlike PNP regulators, where up to 10% of the output current is wasted as quiescent current, the LT1083 quiescent current flows into the load, increasing efficiency.