LM2931AT-5.0

Product Summary

The LM2931AT-5.0 is a positive voltage regulator which features a very low quiescent current of 1mA or less when supplying 10mA loads. This unique characteristic and the extremely low input-output differential required for proper regulation (0.2V for output currents of 10mA) make the LM2931AT-5.0 the ideal regulator for standby power systems. Applications include memory standby circuits, CMOS and other low power processor power supplies as well as systems demanding as much as 100mA of output current. Designed originally for automotive applications, the LM2931AT-5.0 and all regulated circuitry are protected from reverse battery installations or 2 battery jumps. During line transients, such as a load dump (60V) when the input voltage to the regulator can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both internal circuits and the load. The LM2931AT-5.0 cannot be harmed by temporary mirror-image insertion. Familiar regulator features such as short circuit and thermal overload protection are also provided. The LM2931AT-5.0 is a fixed 5V output (±3.8% tolerance for A grade). It is available in a TO-220 power package, TO-263 surface mount package, an 8-lead surface mount package, and also available in the TO-92 plastic and 6-Bump micro SMD packages.

Parametrics

LM2931AT-5.0 absolute maximum ratings: (1)Input Voltage Operating Range: 26V; (2)Overvoltage Protection (Adjustable): 60V; (3)Internal Power Dissipation: Internally Limited; (4)Operating Ambient Temperature Range: -40℃ to +85℃; (5)Maximum Junction Temperature: 125℃; (6)Storage Temperature Range: -65℃ to +150℃; (7)Lead Temp. (Soldering, 10 seconds): 230℃; (8)ESD Tolerance: 2000V.

Features

LM2931AT-5.0 features: (1)Very low quiescent current; (2)Output current in excess of 100 mA; (3)Input-output differential less than 0.6V; (4)Reverse battery protection; (5)60V load dump protection; (6)-50V reverse transient protection; (7)Short circuit protection; (8)Internal thermal overload protection; (9)Mirror-image insertion protection; (10)Available in TO-220, TO-92, TO-263, SO-8 or 6-Bump micro SMD packages; (11)Available as adjustable with TTL compatible switch; (12)See AN-1112 for micro SMD considerations.

Diagrams