LM317L

Manufacturer Part NumberLM317L
DescriptionThe LM317L is a 3-terminal adjustable positive voltage regulator capable of supplying in excess of 100mA over an output voltage range of 1
ManufacturerFairchild Semiconductor
LM317L datasheet
 


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LM317L
3-Terminal 0.1A Positive Adjustable Regulator
Features
• Output Current in Excess of 100mA
• Output Adjustable Between 1.2V and 37V
• Internal Thermal Overload Protection
• Internal Short Circuit Current Limiting
• Output Transistor Safe Area Compensation
• Floating Operation For High Voltage Applications
Internal Block Diagram
Vin
3
Input
Reference
©2011 Fairchild Semiconductor Corporation
Description
The LM317L is a 3-terminal adjustable positive voltage
regulator capable of supplying in excess of 100mA over an
output voltage range of 1 .2V to 37V. This voltage regulator
is exceptionally easy to use and requires only two external
resistors to set the output voltage.
TO-92
1. Adj 2. Output 3. Input
1. Input 2.3.6.7. Output
4. Adj 5.8. NC
+
-
Protection
Voltage
Circuitry
1
Vadj
www.fairchildsemi.com
1
8-SOP
1
Rlimit
2
Vo
Output
Rev. 1.0.3

LM317L Summary of contents

  • Page 1

    ... Input Reference ©2011 Fairchild Semiconductor Corporation Description The LM317L is a 3-terminal adjustable positive voltage regulator capable of supplying in excess of 100mA over an output voltage range of 1 .2V to 37V. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. ...

  • Page 2

    ... LM317L Absolute Maximum Ratings Parameter Input-Output Voltage Differential Power Dissipation Operating Junction Temperature Range Storage Temperature Range Electrical Characteristics = 40mA, 0°C ≤ 5V Parameter Line Regulation (Note1) Load Regulation (Note1) Adjustment Pin Current Adjustment Pin Current Change Reference Voltage ...

  • Page 3

    ... Figure 3. Current Regulator V ⎛ ⎞ REF ---------------- - ⎝ ⎠ OMAX ADJ R1 V ⎛ ⎞ REF I --------------------- - ⎝ ⎠ OMIN ADJ < < 5mA I 500mA O OUTPUT + 1.0uF 120 1k TTL CONTROL OUTPUT 240 1N4001 50k + 10uF Io R2 OUTPUT 1.25V ≅ --------------- - R1 1.25V ≅ --------------------- - LM317L 3 ...

  • Page 4

    ... LM317L Mechanical Dimensions Package +0.25 4.58 –0.15 0.46 ±0.10 1.27TYP ±0.20 [1.27 ] ±0.20 3.60 4 TO-92 1.27TYP ±0.20 [1.27 ] (R2.29) +0.10 0.38 –0.05 ...

  • Page 5

    ... Mechanical Dimensions Package #1 #4 0.156 0.50 ±0.20 0.020 ±0.008 (Continued) 8-SOP ±0.20 1.55 ±0.008 0.061 #8 #5 ±0.30 6.00 1.80 MAX ±0.012 0.236 0.071 3.95 ±0.20 ±0.008 5.72 0.225 LM317L 0.1~0.25 MIN 0.004~0.001 5 ...

  • Page 6

    ... LM317L Ordering Information Product Number LM317LZ LM317LM DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS ...