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LM317L_11 Datasheet, PDF (1/12 Pages) ON Semiconductor – 100 mA Adjustable Output, Positive Voltage Regulator | |||
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LM317L, NCV317LB
100 mA Adjustable Output,
Positive Voltage Regulator
The LM317L is an adjustable 3-terminal positive voltage regulator
capable of supplying in excess of 100 mA over an output voltage range
of 1.2ÄV to 37 V. This voltage regulator is exceptionally easy to use
and requires only two external resistors to set the output voltage.
Further, it employs internal current limiting, thermal shutdown and
safe area compensation, making them essentially blow-out proof.
The LM317L serves a wide variety of applications including local,
on card regulation. This device can also be used to make a
programmable output regulator, or by connecting a fixed resistor
between the adjustment and output, the LM317L can be used as a
precision current regulator.
Features
â¢ÄOutput Current in Excess of 100 mA
â¢ÄOutput Adjustable Between 1.2 V and 37 V
â¢ÄInternal Thermal Overload Protection
â¢ÄInternal Short Circuit Current Limiting
â¢ÄOutput Transistor Safe-Area Compensation
â¢ÄFloating Operation for High Voltage Applications
â¢ÄStandard 3-Lead Transistor Package
â¢ÄEliminates Stocking Many Fixed Voltages
â¢ÄPb-Free Packages are Available
â¢ÄNCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
Simplified Application
Vin
Cin*
0.1mF
LM317L
IAdj
Adjust
R2
Vout
R1
240
+ CO**
1.0mF
http://onsemi.com
LOW CURRENT
THREE-TERMINAL
ADJUSTABLE POSITIVE
VOLTAGE REGULATOR
8
1
SOIC-8
D SUFFIX
CASE 751
Pin 1. Vin
2. Vout
3. Vout
4. Adjust
5. N.C.
6. Vout
7. Vout
8. N.C.
123
STRAIGHT LEAD
BULK PACK
TO-92
Z SUFFIX
CASE 29
1
2
3
BENT LEAD
TAPE & REEL
AMMO PACK
Pin 1. Adjust
2. Vout
3. Vin
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
Ä* Cin is required if regulator is located an appreciable
** distance from power supply filter.
** CO is not needed for stability, however,
** it does improve transient response.
Ç Ç Vout + 1.25ÄÄÄVÄÄ
1
)
R2
R1
) IAdjÄÄR2
Since IAdj is controlled to less than 100 mA, the error
associated with this term is negligible in most applications.
婀 Semiconductor Components Industries, LLC, 2008
1
March, 2008 - Rev. 11
Publication Order Number:
LM317L/D
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