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LP2954 - 5V and Adjustable Micropower Low-Dropout Voltage Regulators

General Description

The LP2954 is a 5V micropower voltage regulator with very low quiescent current (90 µA typical at 1 mA load) and very low dropout voltage (typically 60 mV at light loads and 470 mV at 250 mA load current).

Key Features

  • n 5V output within 1.2% over temperature (A grade) n Adjustable 1.23 to 29V output voltage available (LP2954IM and LP2954AIM) n Guaranteed 250 mA output current n Extremely low quiescent current n Low dropout voltage n Reverse battery protection n Extremely tight line and load regulation n Very low temperature coefficient n Current and thermal limiting n Pin compatible with LM2940 and LM340 (5V version only) n Adjustable version adds error flag to warn of output drop and a logic-controlled shutd.

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Other Datasheets by National Semiconductor (now Texas Instruments)

Part Number Description
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The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LP2954/LP2954A 5V and Adjustable Micropower Low-Dropout Voltage Regulators June 1999 LP2954/LP2954A 5V and Adjustable Micropower Low-Dropout Voltage Regulators General Description The LP2954 is a 5V micropower voltage regulator with very low quiescent current (90 µA typical at 1 mA load) and very low dropout voltage (typically 60 mV at light loads and 470 mV at 250 mA load current). The quiescent current increases only slightly at dropout (120 µA typical), which prolongs battery life. The LP2954 with a fixed 5V output is available in the three-lead TO-220 and TO-263 packages. The adjustable LP2954 is provided in an 8-lead surface mount, small outline package. The adjustable version also provides a resistor network which can be pin strapped to set the output to 5V.