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Número de pieza | KA78RxxC | |
Descripción | 1A Fixed 5V Low Dropout Voltage Regulator | |
Fabricantes | Fairchild Semiconductor | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de KA78RxxC (archivo pdf) en la parte inferior de esta página. Total 20 Páginas | ||
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KA78RXXC-Series
1A Output Low Dropout Voltage Regulators
Features
• 1A/3.3V, 5V, 8V, 9V, 12V, 15V output low dropout
www.DataSheet4Uv.coolmtage regulator
• TO-220 full-mold package (4pin)
• Overcurrent protection, thermal shutdown
• Overvoltage protection, short circuit protection
• With output disable function
Description
The KA78RXXC is a low-dropout voltage regulator suitable
for various electronic equipments.
It provides constant voltage power source with TO-220-4
lead full mold package. Dropout voltage of KA78RXXC is
below 0.5V in full rated current(1A).
This regulator has various functions such as peak current
protection, thermal shut down, overvoltage protection and
output disable function.
TO-220F-4L
Internal Block Diagram
Vin 1
THERMAL SHUTDOWN
BANDGAP REFERENCE
HIGH / LOW
Vdis 4
-
+
OUTPUT
ON / OFF
1.4V
1
1. Vin 2. VO 3. GND 4. Vdis
OVERVOLTAGE
PROTECTION
-
+
SOA PROTECTION
Q1
R1
SHSOHORRT-TCCIIRCUUIITT
PROTECTION
R2
2 Vo
©2003 Fairchild Semiconductor Corporation
3
GND
Rev. 1.0.0
1 page Typical Performance Characteristics (Continued)
KA78RXXC-SERIES
20
15
10
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5
0
-25 0 25 50 75 100 125
TEMPERATURE TJ(oC)
Figure 7. Power Dissipation vs. Temperature(Tj)
2.75
2.50
2.25
2.00
1.75
1.50
0
12345
Input-output differential voltage Vin-Vo (V)
6
Figure 9. Output Peak Currenrt vs.
Input-Output Differential Voltage
100
80
60
40
20
0
0 0.5 1.0 1.5 2.0 2.5 3.0
Output Current(A)
Figure 8. Overcurrent Protection Characteristics
(Typical Value)
5
5 Page Typical Performance Characteristics (Continued)
KA78RXXC-SERIES
20
15
10
www.DataSheet4U.com
5
0
-25 0 25 50 75 100 125
TEMPERATURE TJ(oC)
Figure 7. Power Dissipation vs. Temperature(Tj)
2.75
2.50
2.25
2.00
1.75
1.50
0
12345
Input-output differential voltage Vin-Vo (V)
6
Figure 9. Output Peak Currenrt vs.
Input-Output Differential Voltage
100
80
60
40
20
0
0 0.5 1.0 1.5 2.0 2.5
Output Current(A)
Figure 8. Overcurrent Protection Characteristics
(Typical Value)
11
11 Page |
Páginas | Total 20 Páginas | |
PDF Descargar | [ Datasheet KA78RxxC.PDF ] |
Número de pieza | Descripción | Fabricantes |
KA78RxxC | 1A Fixed 5V Low Dropout Voltage Regulator | Fairchild Semiconductor |
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