LP2950-N and LP2951-N are micro-power regulators with very low static current (typical 75µA) and very low step-down (typical 40 mV for light loads and 380 mV at 100 mA). They are ideal for use in battery powered systems. In addition, the static current of the device increases only slightly at dropout, extending battery life.
The careful design of LP2950-N/LP2951-N minimizes the contribution to the error budget. This includes a tight initial tolerance (typical 0.5%), very good load and line regulation (typical 0.05%) and a very low output voltage temperature coefficient, making the part usable as a low-power voltage reference. One of these features is the error flag output, which warns of low output voltage, usually due to the battery during input. It may be used for power-on reset. The second feature is a logically-compatible off input that allows the regulator to be switched on and off.
In addition, the part can be 5-V, 3-V or 3.3V output (depending on the version), or programmed from 1.24V to 29V via an external pair of resistors. The LP2950-N is available in a surface-mount TO252 package and a popular 3-pin TO-92 package that is compatible with older 5-V voltage regulator pins. The 8-pin LP2951-N is available in plastic, ceramic dual inline, WSON, or metal can packaging, and provides additional system features
Pin Configuration
