The LM140L series of three terminal positive regulators is
available with several fixed output voltages making them
useful in a wide range of applications. The LM140LA is an
improved version of the LM78LXX series with a tighter output
voltage tolerance (specified over the full military temperature
range), higher ripple rejection, better regulation and
lower quiescent current. The LM140LA regulators have ±2%
VOUT specification, 0.04%/V line regulation, and 0.01%/mA
load regulation. When used as a zener diode/resistor combination
replacement, the LM140LA usually results in an
effective output impedance improvement of two orders of
magnitude, and lower quiescent current. These regulators
can provide local on card regulation, eliminating the distribution
problems associated with single point regulation. The
voltages available allow the LM140LA to be used in logic
systems, instrumentation, Hi-Fi, and other solid state electronic
equipment. Although designed primarily as fixed voltage
regulators, these devices can be used with external
components to obtain adjustable voltages and currents.