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PDF LM317 Data sheet ( Hoja de datos )
| Número de pieza | LM317 | |
| Descripción | 3-Terminal Positive Adjustable Regulator | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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 1. Positive Adjustable Regulator - Linear  Hay una vista previa y un enlace de descarga de LM317 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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KA317 / LM317
3-Terminal Positive Adjustable Regulator
September 2014
Features
• Output-Current In Excess of 1.5 A
• Output-Adjustable Between 1.2 V and 37 V
• Internal Thermal Overload Protection
• Internal Short-Circuit Current Limiting
• Output-Transistor Safe Operating Area Compensation
• TO-220 Package
Description
This monolithic integrated circuit is an adjustable 3-termi-
nal positive-voltage regulator designed to supply more
than 1.5 A of load current with an output voltage adjust-
able over a 1.2 V to 37 V range. It employs internal cur-
rent limiting, thermal shutdown, and safe area
compensation.
TO-220
Output
1
1. Adj 2. Output 3. Input
Ordering Information
Product Number
LM317T
KA317TU
Package
TO-220 (Single Gauge)
TO-220 (Dual Gauge)
Block Diagram
Vin 3
Input
Packing Method
Rail
Rail
Operating Temperature
0°C to +125°C
0°C to +125°C
Voltage
Reference
Protection
Circuitry
1
VVAaADdJjj
© 2002 Fairchild Semiconductor Corporation
KA317 / LM317 Rev. 1.2.2
Figure 1. Block Diagram
RRlLimIMiItT
2 Vo
Output
www.fairchildsemi.com
1 page  
Typical Application(3)
Input
Ci
0.1 μF
VI KA317 / LM317 VO
VADJ
IADJ
R2
adj
R1
240 Ω
Output
Co
1 μF
VO = 1.25 V (1 + R2 / R1) + IADJR2
Figure 7. Typical Application
Note:
3. CI is required when the regulator is located an appreciable distance from power supply filter. CO is not needed for
stability; however, it does improve transient response. Since IADJ is controlled to less than 100 μA, the error
associated with this term is negligible in most applications.
© 2002 Fairchild Semiconductor Corporation
KA317 / LM317 Rev. 1.2.2
5
www.fairchildsemi.com
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet LM317.PDF ] | |
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