3-Terminal Adjustable Regulator

The LM117 series of adjustable 3-terminal positive voltage Regulators is capable of supplying in excess of 1.5A over a 1.2V to 37V output range. They are exceptionally easy to use and require only two external resistors to set the output voltage. Further, both line and load regulation are better than standard fixed Regulators Also, the LM117 is packaged in standard Transistor packages which are easily mounted and handled.
In addition to higher performance than fixed Regulators the LM117 series offers full overload protection available only in IC's. Included on the chip are current limit, thermal overload protection and safe area protection. All overload protection circuitry remains fully functional even if the adjustment terminal is disconnected.
Normally, no capacitors are needed unless the device is situated more than 6 inches from the input Filter capacitors in which case an input bypass is needed. An optional output capacitor CAN be added to improve transient response. The adjustment terminal CAN be bypassed to achieve very high ripple rejection ratios which are difficult to achieve with standard 3-terminal Regulators
Besides replacing fixed Regulators the LM117 is useful in a wide variety of other applications. Since the Regulator is floating and sees only the input-to-output differential voltage, supplies of several hundred volts CAN be regulated as long as the maximum input to output differential is not exceeded, i.e., avoid short-circuiting the output.
Also, it makes an especially simple adjustable Switching Regulator a programmable output Regulator or by connecting a fixed resistor between the adjustment pin and output, the LM117 CAN be used as a precision current Regulator Supplies with electronic shutdown CAN be achieved by clamping the adjustment terminal to ground which programs the output to 1.2V where most loads draw little current.
For applications requiring greater output current, see LM150 series (3A) and LM138 series (5A) data sheets. For the negative complement, see LM137 series data sheet.
By National Semiconductor Corporation
Part Manufacturer Description Datasheet Samples
LM117HRQMLV Texas Instruments Space Grade 1.5A Adjustable Output Linear Regulator / LDO 3-TO -55 to 125
LM117HVK-QML Texas Instruments 1.2 V-57V ADJUSTABLE POSITIVE REGULATOR, MBFM2, METAL CAN, TO-3, 2 PIN
LM117HRLQMLV Texas Instruments Space Grade 1.5A Adjustable Output Linear Regulator / LDO 3-TO -55 to 125
LM117HVHRQMLV Texas Instruments Space Grade 60V input 1.5A Adjustable Output Linear Regulator / LDO 3-TO -55 to 125
LM117HVGW-QML Texas Instruments Military Grade 60V input 1.5A Adjustable Output Linear Regulator / LDO 16-CFP -55 to 125
LM117HVK/883 Texas Instruments Military Grade 60V input 1.5A Adjustable Output Linear Regulator / LDO 2-TO -55 to 125
LM117E/883 Texas Instruments Military Grade 1.5A Adjustable Output Linear Regulator / LDO 20-LCCC -55 to 125
LM117HVGWRQMLV Texas Instruments Space Grade 60V input 1.5A Adjustable Output Linear Regulator / LDO 16-CFP -55 to 125
LM117KRQMLV Texas Instruments Space Grade 1.5A Adjustable Output Linear Regulator / LDO 2-TO -55 to 125
LM117GW/883 Texas Instruments Military Grade 1.5A Adjustable Output Linear Regulator / LDO 16-CFP
LM117 's PackagesLM117 's pdf datasheet
LM117H TO-39
LM117K-STEEL TO-3
LM117E-883 LCC
LM117H-883 TO-39
LM117K-883 TO-3
LM117WG-883
LM117KRQMLV TO-3
LM117K-MDS
LM117H-MD8
LM117H-MDE
LM117H-MDR
LM117H-MDS
LM117KG-MD8
LM117H-MW8
LM117KG-MW8




LM117 Pinout, Pinouts
LM117 pinout,Pin out
This is one package pinout of LM117,If you need more pinouts please download LM117's pdf datasheet.

LM117 Application circuits
LM117 circuits
This is one application circuit of LM117,If you need more circuits,please download LM117's pdf datasheet.


Related Electronics Part Number

Related Keywords:

LM117 Pb-Free LM117 Cross Reference LM117 Schematic LM117 Distributor
LM117 Application Notes LM117 RoHS LM117 Circuits LM117 footprint