LT1521IS Datasheet

300mA Low Dropout Regulators with Micropower Quiescent Current and Shutdown


The LT1521IS is low dropout regulators with micropower quiescent current and shutdown. These devices are capable of supplying 300mA of output current with a dropout voltage of 0.5V. Designed for use in battery-powered systems, the low quiescent current, 12µA operating and 6µA in shutdown, makes them an ideal choice. The quiescent current is well controlled; it does not rise in dropout as it does with many other low dropout PNP regulators. LT1521IS Features • Dropout Voltage: 0.5V• Output Current: 300mA• Quiescent Current: 12µA• No Protection Diodes Needed• Adjustable Output from 3.8V to 20V• Fixed Output Voltages: 3V, 3.3V, 5V• Controlled Quiescent Current in Dropout• Shutdown IQ= 6µA• Reverse Battery Protection• No Reverse Current• Thermal Limiting LT1521IS Applications • Low Current Regulator• Regulator for Battery-Powered Systems• Post Regulator for Switching Supplies


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