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PDF LM377 Data sheet ( Hoja de datos )
| Número de pieza | LM377 | |
| Descripción | Adjustable Output / Negative Voltage Regulator | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LM377 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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LM337
1.5 A, Adjustable Output,
Negative Voltage Regulator
The LM337 is an adjustable 3−terminal negative voltage regulator
capable of supplying in excess of 1.5 A 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 it essentially blow−out proof.
The LM337 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 LM337 can be used as a precision current
regulator.
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 Constant with Temperature
• Output Transistor Safe−Area Compensation
• Floating Operation for High Voltage Applications
• Eliminates Stocking many Fixed Voltages
• Available in Surface Mount D2PAK and Standard 3−Lead Transistor
Package
• These Devices are Pb−Free and are RoHS Compliant
IPROG
Cin* +
1.0 mF
IAdj
R2
R1
120
CO** +
1.0 mF
Vin Vout
-Vin LM337
-Vout
* Cin is required if regulator is located more than 4 inches from power supply filter.
* A 1.0 mF solid tantalum or 10 mF aluminum electrolytic is recommended.
** CO is necessary for stability. A 1.0 mF solid tantalum or 10 mF aluminum electrolytic
** is recommended.
ǒ ǓVout + –1.25 V
1
)
R2
R1
Figure 1. Standard Application
www.onsemi.com
THREE−TERMINAL
ADJUSTABLE NEGATIVE
VOLTAGE REGULATOR
MARKING
DIAGRAMS
D2PAK
D2T SUFFIX
CASE 936
LM
337yyyy
AWLYWWG
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
Pin 1. Adjust
2. Vin
3. Vout
TO−220AB
T SUFFIX
CASE 221AB
Heatsink surface
connected to Pin 2.
LM
337xx
AWLYWWG
1
xx
yyyy
A
WL
Y
WW
G
= BT, T
= BD2T, D2T
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
© Semiconductor Components Industries, LLC, 2015
January, 2015 − Rev. 10
1
Publication Order Number:
LM337/D
1 page  
LM337
0.2
0
IL = 0.5 A
-0.2
-0.4
-0.6
-0.8
-1.0
Vin = -15 V
Vout = -10 V
-1.2
IL = 1.5 A
-1.4
-50 -25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 5. Load Regulation
4.0
3.0
2.0
TJ = 25°C
1.0
0
0 10 20 30 40
Vin-Vout , INPUT-OUTPUT VOLTAGE DIFFERENTIAL (Vdc)
Figure 6. Current Limit
80
75
70
65
60
55
50
45
40
-50 -25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 7. Adjustment Pin Current
3.0
Vout = -5.0 V
DVO = 100 mV
2.5
IL = 1.5 A
2.0
1.0 A
1.5 500 mA
200 mA
20 mA
1.0
-50 -25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 8. Dropout Voltage
1.27
1.26
1.25
1.24
1.23
-50 -25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 9. Temperature Stability
1.8
1.6
1.4
1.2
1.0 TJ = 25°C
0.8
0.6
0.4
0.2
0
0 10 20 30 40
Vin-Vout , INPUT-OUTPUT VOLTAGE DIFFERENTIAL (Vdc)
Figure 10. Minimum Operating Current
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5
5 Page 
LM337
PACKAGE DIMENSIONS
BF
Q
H
Z
4
1 23
A
K
L
V
G
N
D
TO−220, SINGLE GAUGE
CASE 221AB
ISSUE A
−T−
SEATING
PLANE
C
TS
U
R
J
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCHES.
3. DIMENSION Z DEFINES A ZONE WHERE ALL BODY AND
LEAD IRREGULARITIES ARE ALLOWED.
4. PRODUCT SHIPPED PRIOR TO 2008 HAD DIMENSIONS
S = 0.045 - 0.055 INCHES (1.143 - 1.397 MM)
INCHES
DIM MIN MAX
A 0.570 0.620
B 0.380 0.405
C 0.160 0.190
D 0.025 0.035
F 0.142 0.147
G 0.095 0.105
H 0.110 0.155
J 0.018 0.025
K 0.500 0.562
L 0.045 0.060
N 0.190 0.210
Q 0.100 0.120
R 0.080 0.110
S 0.020 0.024
T 0.235 0.255
U 0.000 0.050
V 0.045 ---
Z --- 0.080
MILLIMETERS
MIN MAX
14.48 15.75
9.66 10.28
4.07 4.82
0.64 0.88
3.61 3.73
2.42 2.66
2.80 3.93
0.46 0.64
12.70 14.27
1.15 1.52
4.83 5.33
2.54 3.04
2.04 2.79
0.508 0.61
5.97 6.47
0.00 1.27
1.15 ---
--- 2.04
ON Semiconductor and the are registered trademarks of Semiconductor Components Industries, LLC (SCILLC) or its subsidiaries in the United States and/or other countries.
SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed
at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation
or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets
and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each
customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended,
or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which
the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or
unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and
expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim
alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable
copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
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P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: [email protected]
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USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
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Phone: 81−3−5817−1050
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative
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11
LM337/D
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet LM377.PDF ] | |
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