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The LM140L series of three terminal posiTIve regulators isavailable with several fixed output voltages making themuseful in a wide range of applicaTIons. The LM140LA is animproved version of the LM78LXX series with a TIghter outputvoltage tolerance (specified over the full military temperaturerange), higher ripple rejecTIon, better regulation andlower quiescent current. The LM140LA regulators have ±2%VOUT specification, 0.04%/V line regulation, and 0.01%/mAload regulation. When used as a zener diode/resistor combinationreplacement, the LM140LA usually results in aneffective output impedance improvement of two orders ofmagnitude, and lower quiescent current. These regulatorscan provide local on card regulation, eliminating the distributionproblems associated with single point regulation. Thevoltages available allow the LM140LA to be used in logicsystems, instrumentation, Hi-Fi, and other solid state electronicequipment. Although designed primarily as fixed voltageregulators, these devices can be used with externalcomponents to obtain adjustable voltages and currents.
