peculiarity
5V Output at 1.2% with Temperature (Class A)
1.23 to 29V Adjustable Output Voltage (LP2954IM and LP2954AIM)
Guaranteed output current of 250 mA
Very low quiescent current
Low differential pressure
Reverse battery protection
Extremely tight line and load regulation
Very low temperature coefficient
Current and thermal limits
Pin compatible with LM2940 and LM340 (5V version only)
The adjustable version adds error flag warnings for yield drops and logic control shutdown
illustrate
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 load, 250 mA and 470 mV at the load).
Quiescent current increases only slightly (120μA (typical)) during dropouts, extending battery life.
The LP2954 is a fixed 5V output, three-pin TO-220 and TO-263 package. The adjustable LP2954 is available in a small 8-lead surface mount package. The adjustable version also provides a resistor network that can be pin-bound to a 5V output setting.
Reverse battery protection.
Tight wire and load regulation (0.04% typical), as well as a very low output temperature coefficient, make the LP2954 suitable for use with low power voltage references.
Output accuracy is guaranteed at both room temperatures and over the entire operating temperature range.
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High efficiency linear regulator
Low-dropout battery-powered regulator