5-Volt Regulator

The LM109 series are complete 5V Regulators fabricated on a single silicon chip. They are designed for local regulation on digital Logic cards, eliminating the distribution problems association with single-point regulation. The devices are available in two standard Transistor packages. In the solid-kovar TO-5 header, it CAN deliver output currents in excess of 200 mA, if adequate heat sinking is provided. With the TO-3 power package, the available output current is greater than 1A.
The Regulators are essentially blowout proof. Current limiting is included to limit the peak output current to a safe value. In addition, thermal shutdown is provided to keep the IC from overheating. If internal dissipation becomes too great, the Regulator will shut down to prevent excessive heating.
Considerable effort was expended to make these devices easy to use and to minimize the number of external components. It is not necessary to bypass the output, although this does improve transient response somewhat. Input bypassing is needed, however, if the Regulator is located very far from the Filter capacitor of the power supply. Stability is also achieved by methods that provide very good rejection of load or line transients as are usually seen with TTL Logic
Although designed primarily as a fixed-voltage Regulator the output of the LM109 series CAN be set to voltages above 5V, as shown. It is also possible to use the circuits as the control element in precision Regulators taking advantage of the good current-handling capability and the thermal overload protection.
By National Semiconductor Corporation
Part Manufacturer Description Datasheet Samples
LM109H/883 Texas Instruments Military Grade 1A 5V Output Linear Regulator / LDO 3-TO -55 to 150
LM109H Texas Instruments Extended Temperature 1A 5V Output Linear Regulator / LDO 3-TO -55 to 150
LM109H/NOPB Texas Instruments Extended Temperature 1A 5V Output Linear Regulator / LDO 3-TO -55 to 150
LM109KSTEEL Texas Instruments 5.05V FIXED POSITIVE REGULATOR, MBFM2, METAL CAN, TO-3, 2 PIN
LM109K/883 Texas Instruments Military Grade 1A 5V Output Linear Regulator / LDO 2-TO -55 to 150
LM109K Texas Instruments Extended Temperature 1A 5V Output Linear Regulator / LDO 2-TO-3 -55 to 150
LM109K STEEL Texas Instruments Extended Temperature 1A 5V Output Linear Regulator / LDO 2-TO-3 -55 to 150
LM109K STEEL/NOPB Texas Instruments Extended Temperature 1A 5V Output Linear Regulator / LDO 2-TO-3 -55 to 150
LM109 's PackagesLM109 's pdf datasheet
LM109H TO-39
LM109K-STEEL TO-3
LM109H-883 TO-39
LM109K-883 TO-3
LM109K-MD8
LM109K-MW8




LM109 Pinout, Pinouts
LM109 pinout,Pin out
This is one package pinout of LM109,If you need more pinouts please download LM109's pdf datasheet.

LM109 Application circuits
LM109 circuits
This is one application circuit of LM109,If you need more circuits,please download LM109's pdf datasheet.


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