LP2951CS-L-3-3集成电路（IC）的线性+开关稳压器规格书PDF中文资料

PRODUCT DESCRIPTION

The 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 feature low quiescent current and low dropout voltage (typ. 50mV at light load and 380 mV at 100mA). This includes a tight initial tolerance (0.5 typ.), extremely good load and line regulation (0.05 typ.), and very low output temperature coefficient (20 ppm/¡C typ.), making the LP2950/LP2951 useful as a low-power voltage reference.

FEATURES

• 5.0V and 3.3V Versions at 100mA Output

• Very Low Quiescent Current

• Low Dropout Voltage: 380mV at 100mA

• Extremely Tight Load and Line Regulation

• Very Low Temperature Coefficient

• Current & Thermal Limiting

• Need Only 1 µF for Stability

• Offered in Lead Free, RoHS Compliant Package : TO-92 (LP2950) & SOIC (LP2951)

• Direct Replacement For LP2950/LP2951

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 Electronic

LP2951 versions only

• Error Flag Warns of Output Dropout

• Logic-Controlled Electronic Shutdown

• Output Programmable From 1.24 to 29V