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LM317LBD Scheda tecnica(PDF) 1 Page - ON Semiconductor

Il numero della parte LM317LBD
Spiegazioni elettronici  LOW CURRENT THREE-TERMINAL ADJUSTABLE POSITIVE VOLTAGE REGULATOR
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LM317L
SEMICONDUCTOR
TECHNICAL DATA
LOW CURRENT
THREE–TERMINAL
ADJUSTABLE POSITIVE
VOLTAGE REGULATOR
ORDERING INFORMATION
Order this document by LM317L/D
Z SUFFIX
PLASTIC PACKAGE
CASE 29
Pin 1. Adjust
2. Vout
3. Vin
3
1
2
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SOP–8*)
1
8
Pin 1. Vin
2. Vout
3. Vout
4. Adjust
5. N.C.
6. Vout
7. Vout
8. N.C.
* SOP–8 is an internally modified SO–8 pack-
age. Pins 2, 3, 6 and 7 are electrically common
to the die attach flag. This internal lead frame
modification decreases package thermal resis-
tance and increases power dissipation capabili-
ty when appropriately mounted on a printed cir-
cuit board. SOP–8 conforms to all external di-
mensions of the standard SO–8 package.
Operating
Temperature Range
Device
Package
LM317LD
LM317LZ
LM317LBZ
SOP–8
Plastic
Plastic
TJ = –40° to +125°C
TJ = 0° to +125°C
LM317LBD
SOP–8
LM317L
SEMICONDUCTOR
TECHNICAL DATA
LOW CURRENT
THREE–TERMINAL
ADJUSTABLE POSITIVE
VOLTAGE REGULATOR
ORDERING INFORMATION
Order this document by LM317L/D
Z SUFFIX
PLASTIC PACKAGE
CASE 29
Pin 1. Adjust
2. Vout
3. Vin
3
1
2
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SOP–8*)
1
8
Pin 1. Vin
2. Vout
3. Vout
4. Adjust
5. N.C.
6. Vout
7. Vout
8. N.C.
* SOP–8 is an internally modified SO–8 pack-
age. Pins 2, 3, 6 and 7 are electrically common
to the die attach flag. This internal lead frame
modification decreases package thermal resis-
tance and increases power dissipation capabili-
ty when appropriately mounted on a printed cir-
cuit board. SOP–8 conforms to all external di-
mensions of the standard SO–8 package.
Operating
Temperature Range
Device
Package
LM317LD
LM317LZ
LM317LBZ
SOP–8
Plastic
Plastic
TJ = –40° to +125°C
TJ = 0° to +125°C
LM317LBD
SOP–8
1
MOTOROLA ANALOG IC DEVICE DATA
Three-Terminal 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
1.2 V 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.
Output Current in Excess of 100 mA
Output Adjustable Between 1.2 V and 37 V
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting
Output Transistor Safe–Area Compensation
Floating Operation for High Voltage Applications
Standard 3–Lead Transistor Package
Eliminates Stocking Many Fixed Voltages
Simplified Application
* 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.
Since IAdj is controlled to less than 100 µA, the error
associated with this term is negligible in most applications.
LM317L
Vin
Vout
R1
240
R2
Adjust
IAdj
Cin*
0.1
µF
+ CO**
1.0
µF
Vout + 1.25 V 1 )
R2
R1
) IAdj R2
© Motorola, Inc. 1996
Rev 1


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