Part # LM2937-2.5 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM2937-2.5, LM2937-3.3 400mA and 500mA Voltage Regulators


Part Details:

LM2937-2.5, August 2005 LM2937-2.5, LM2937-3.3400mA and 500mA Voltage Regulators LM2937-3.3 General Description two-battery jumps and up to +60V/-50V load dump tran-sients. Familiar regulator features such as short circuit and The LM2937-2.5 and LM2937-3.3 are positive voltage regu- thermal shutdown protection are also built in. lators capable of supplying up to 500 mA of load current.Both regulators are ideal for converting a common 5V logic Features supply, or higher input supply voltage, to the lower 2.5V and3.3V supplies to power VLSI ASIC s and microcontrollers. n Fully specified for operation over -40°C to +125°C 400mA Special circuitry has been incorporated to minimize the qui- n Output current in excess of 500 mA (400mA for escent current to typically only 10 mA with a full 500 mA load SOT-223 package) current when the input to output voltage differential is greater n Output trimmed for 5% tolerance under all operating than 5V. conditions The LM2937 requires an output bypass capacitor for stabil- n Wide output capacitor ESR range, 0.01 up to 5 and ity. As with most regulators utilizing a PNP pass transistor, n Internal short circuit and thermal overload protection the ESR of this capacitor remains a critical design param- n Reverse battery protection eter, but the LM2937-2.5 and LM2937-3.3 include special n 60V input transient protection 500mA compensation circuitry that relaxes ESR requirements. The n Mirror image insertion protection LM2937 is stable for all ESR ratings less than 5. Thisallows the use of low ESR chip capacitors. The regulators are also suited for automotive applications,with built in protection from reverse battery connections, Voltage Connection Diagrams and Ordering Information TO-220 Plastic Package SOT-223 Plastic Package Regulators 10011324 10011325 Front View Front View Order Number LM2937ET-2.5, LM2937ET-3.3, Order Number LM2937IMP-2.5, LM2937IMP-3.3, See NS Package Number T03B See NS Package Number MA04A TO-263 Surface-Mount Package 10011327 Side View 10011326 Top View Order Number LM2937ES-2.5, LM2937ES-3.3, See NS Package Number TS3B


Please click the following link to download the datasheet:

LM2937-2.5.pdf Datasheet