LM340L

LM140L, LM340L www.ti.com SNVS758B – APRIL 1998 – REVISED MARCH 2013 LM140L/LM340L Series 3-Terminal Positive Regulators Check for Samples: LM140L, LM340L FEATURES 1 2 Line Regulation of 0.04%/V Load Regulation of 0.01%/mA Output Voltage Tolerances of – ±2% at Tj = 25°C and ±4% Over the Temperature Range (LM140LA) – ±3% Over the Temperature Range (LM340LA) Output Current of 100 mA Internal Thermal Overload Protection Output Transistor Safe Area Protection Internal Short Circuit Current Limit Available in – Metal TO Low Profile Package (LM140LA/LM340LA) – Plastic TO-92 (LM340LA) DESCRIPTION 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, ins...