LM338T/NOPB

LM338T/NOPB is an adjustable 3-terminal positive voltage regulator. It is capable of supplying in excess of 5A over a 1.2 to 32V output range. It is exceptionally easy to use and requires only 2 resistors to set the output voltage. Careful circuit design has resulted in outstanding load and line regulation, comparable to many commercial power supplies. LM338 is supplied in a standard 3-lead transistor package. A unique feature of the LM338 is timed dependent current limiting. Current limit circuitry allows peak currents of up to 12A to be drawn from regulator for short periods of time. This allows LM338 to be used with heavy transient loads and speeds start-up under full-load conditions. Under sustained loading conditions, current limit decreases to a safe value protecting regulator. Also included on the chip are thermal overload protection and safe area protection for power transistor. Applications include adjustable power supplies, constant current regulators and battery chargers.

• Specified thermal regulation
• Current limit constant with temperature
• P+ product enhancement tested
• Output is short-circuit protected
• Specified 7A peak output current, specified 5A output current
• 75dB ripple rejection ratio (VOUT = 10V, f = 120Hz, CADJ = 10µF, TJ = 0°C to 125°C)
• 0.3% long-term stability at TJ = 125°C, 1000 Hrs
• 3 in TO-220 package
• 0 to 125°C operating temperature