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Número de pieza | KA78R15CTU | |
Descripción | 1A Output Low Dropout Voltage Regulators | |
Fabricantes | Fairchild | |
Logotipo | ||
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KA78RXXC-Series
1A Output Low Dropout Voltage Regulators
Features
• 1A/3.3V, 5V, 8V, 9V, 12V, 15V output low dropout
voltage 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
Vdis
HIGH / LOW
4
-
+
OUTPUT
ON / OFF
1.4V
1
1. Vin 2. VO 3. GND 4. Vdis
OVERVOLTAGE
PROTECTION
-
+
SOA PROTECTION
Q1
R1
SHSOHORRT-TCCIIRCCUUIITT
PROTECTION
R2
2 Vo
©2011 Fairchild Semiconductor Corporation
3
GND
Rev. 1.0.1
1 page Typical Performance Characteristics (Continued)
KA78RXXC-SERIES
20
15
10
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
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 18 Páginas | |
PDF Descargar | [ Datasheet KA78R15CTU.PDF ] |
Número de pieza | Descripción | Fabricantes |
KA78R15CTU | 1A Output Low Dropout Voltage Regulators | Fairchild |
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