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LP2950 Datasheet(PDF) 1 Page - Calogic, LLC |
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LP2950 Datasheet(HTML) 1 Page - Calogic, LLC |
1 / 10 page 100mA Low Dropout Voltage Regulators LP2950 / LP2951 FEATURES •• 5V, 3.3V, and 3.0V Versions at 100mAOutput •• Very Low Quiescent Current •• Low Dropout Voltage •• Extremely Tight Load and Line Regulation •• Very Low Temperature Coefficient •• Current and Thermal Limiting •• Needs Only 1µF for Stability LP2951 Versions Only •• Error Flag Warns of Output Dropout •• Logic-Controlled Electronic Shutdown •• Output Programmable from 1.24 to 29V APPLICATIONS •• Battery Powered Systems •• Cordless Telephones •• Radio Control Systems •• Portable / Palm Top / Notebook Computers •• Portable Consumer Equipment •• Portable Instrumentation •• Avionics •• SMPS Post-Regulator •• Voltage Reference •• Automotive Electronics PRODUCT DESCRIPTION The Calogic LP2950 and LP2951 are low power voltage regulators. These devices are an excellent choice for use in battery-powered applications such as cordless telephones, radio control systems, and portable computers. The LP2950 and LP2951 features very low quiescent current and very low dropout voltage (Typ. 50mV at light load and 380mV at 100mA). This includes a tight initial tolerance of 0.5% typ., extremely good load and line regulation 0.05% typ. and very low output temperature coefficient, making the LP2950/LP2951 useful as a low-power voltage reference. The error flag output feature is used as power-on reset for warning of a low output voltage, due to falling voltage input of batteries. Another feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. The LP2950 is offered in a 3-pin TO-92 package compatible with other 5V, 3.0V, 3.3V regulators. The LP2951 is also available in 8-pin plastic and SO-8. The regulator output voltage may be pin-strapped for 5V, 3V or 3.3 volts or programmed from 1.24 volt to 29 volts with an external pair of resistors. Use of AS’s design, processing and testing techniques make our LP2950 and LP2951 superior over similar products. ORDERING INFORMATION PART PACKAGE TEMPERATURE RANGE LP2950ACN-X TO-92 (3-Pin) IND. LP2950CN-X TO-92 (3-Pin) IND. LP2951ACP-X Plastic DIP (8-Pin) IND. LP2951CP-X Plastic DIP (8-Pin) IND. LP2951ACS-X Plastic SOIC (8-Pin) IND. LP2951CS-X Plastic SOIC (8-Pin) IND. X = 3.0V, 3.3V or 5.0V CORPORATION PIN CONNECTIONS 1D-20 123 1. OUTPUT 2. GROUND 3. INPUT TO-92 BOTTOM VIEW GROUND 1 2 3 8 7 6 4 5 ERROR LP2951 1D-19 8-PIN SURFACE MOUNT 5V OR 3.3V TAP FEEDBACK INPUT SHUTDOWN SENSE OUTPUT TOP VIEW CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 |
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