(ACTIVE) 3-Terminal Positive Regulators


Typical Application

Typical Performance


The LM78LXX series of three terminal positive regulators is available with several fixed output voltages making them useful in a wide range of applications. When used as a zener diode/resistor combination replacement, the LM78LXX 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 LM78LXX to be used in logic systems, instrumentation, HiFi, and other solid state electronic equipment.

The LM78LXX is available in the plastic TO-92 (LP) package, the SOIC-8 (D) package and a chip sized package (8-Bump DSBGA) using TI’s DSBGA package technology. With adequate heat sinking the regulator can deliver 100mA output current. Current limiting is included to limit the peak output current to a safe value. Safe area protection for the output transistors is provided to limit internal power dissipation. If internal power dissipation becomes too high for the heat sinking provided, the thermal shutdown circuit takes over preventing the IC from overheating.


  • LM78L05 in DSBGA Package
  • Output Voltage Tolerances of ±5% Over the
    Temperature Range
  • Output Current of 100mA
  • Internal Thermal Overload Protection
  • Output Transistor Safe Area Protection
  • Internal Short Circuit Current Limit
  • Available in TO-92 and SOIC-8 Low Profile
  • No External Components
  • Output Voltages of 5.0V, 6.2V, 8.2V, 9.0V, 12V,
  • See AN-1112 (SNVA009) for DSBGA Considerations


Iout (Max) (A) 0.1    
Output Options Fixed Output    
Vin (Min) (V) 6.7    
Vin (Max) (V) 35    
Fixed Output Options (V) 5    
Vout (Min) (V) 5    
Vout (Max) (V) 5    
Vdo (Typ) (mV) 1600    
Additional Features Overcurrent Protection^Thermal Shutdown    
Rating Catalog    
Operating Temperature Range (C) -40 to 125^-40 to 85^0 to 125    
Pin/Package 8DSBGA^8SOIC^3TO-92    
Approx. Price (US$) 0.20 | 1ku    

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