LP2951JAN Series

Series of Adjustable Micropower Voltage Regulators

Catalog

Series of Adjustable Micropower Voltage Regulators

Part	Protection Features	PSRR	Control Features	Output Type	Voltage - Input (Max) [Max]	Voltage - Output (Max)	Number of Regulators	Package / Case	Package / Case	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Output Configuration	Supplier Device Package	Mounting Type	Voltage - Output (Min/Fixed)	Voltage - Output (Min/Fixed)	Current - Output	Voltage Dropout (Max) [Max]
Texas Instruments JL2951BPA	Over Temperature	50 dB	Enable	Adjustable (Fixed)	30 V	29 V	1	7.62 mm	0.3 in	8-CDIP	125 °C	-55 °C	Positive	8-CDIP	Through Hole	5 V	1.24 V	100 mA	0.6 V

Catalog

Series of Adjustable Micropower Voltage Regulators

Key Features

• High Accuracy Output VoltageEnsured 100mA Output CurrentExtremely Low Quiescent CurrentLow Dropout VoltageExtremely Tight Load and Line RegulationVery Low Temperature CoefficientUse as Regulator or ReferenceNeeds Minimum Capacitance for StabilityCurrent and Thermal LimitingStable with Low-ESR Output Capacitors (10mΩ to 6Ω)Error Flag Warns of Output DropoutLogic-Controlled Electronic ShutdownOutput Programmable from 1.24 to 29VAll trademarks are the property of their respective owners.High Accuracy Output VoltageEnsured 100mA Output CurrentExtremely Low Quiescent CurrentLow Dropout VoltageExtremely Tight Load and Line RegulationVery Low Temperature CoefficientUse as Regulator or ReferenceNeeds Minimum Capacitance for StabilityCurrent and Thermal LimitingStable with Low-ESR Output Capacitors (10mΩ to 6Ω)Error Flag Warns of Output DropoutLogic-Controlled Electronic ShutdownOutput Programmable from 1.24 to 29VAll trademarks are the property of their respective owners.

Description

The LP2951 is a micropower voltage regulator with very low quiescent current (75μA typ.) and very low dropout voltage (typ. 40mV at light loads and 380mV at 100mA). It is ideally suited for use in battery-powered systems. Furthermore, the quiescent current increases only slightly in dropout, prolonging battery life. An additional feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5V, 3V, or 3.3V output (depending on the version), or programmed from 1.24V to 29V with an external pair of resistors. Careful design of the LP2951 has minimized all contributions to the error budget. This includes a tight initial tolerance (0.5% typ.), extremely good load and line regulation (0.05% typ.) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference. The LP2951 is a micropower voltage regulator with very low quiescent current (75μA typ.) and very low dropout voltage (typ. 40mV at light loads and 380mV at 100mA). It is ideally suited for use in battery-powered systems. Furthermore, the quiescent current increases only slightly in dropout, prolonging battery life. An additional feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5V, 3V, or 3.3V output (depending on the version), or programmed from 1.24V to 29V with an external pair of resistors. Careful design of the LP2951 has minimized all contributions to the error budget. This includes a tight initial tolerance (0.5% typ.), extremely good load and line regulation (0.05% typ.) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.