KA378R05 Fairchild Semiconductor, KA378R05 Datasheet

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KA378R05

Manufacturer Part Number
KA378R05
Description
The KA378R05 is a low-dropout voltage regulator suitable for various electronic equipments
Manufacturer
Fairchild Semiconductor
Datasheet

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Part Number:
KA378R05
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
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Part Number:
KA378R05CTU
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Features
• 3A / 5V Output low dropout voltage regulator
• TO220 Full-Mold package (4PIN)
• Overcurrent protection, Thermal shutdown
• Overvoltage protection, Short-Circuit protection
• With output disable function
Internal Block Diagram
©2001 Fairchild Semiconductor Corporation
KA378R05
Low Dropout Voltage Regulator
Vin
1
Vdis
4
1.4V
HIGH / LOW
BANDGAP REFERENCE
THERMAL SHUTDOWN
-
+
OUTPUT
ON / OFF
SHORT-CIRCUIT
SOA PROTECTION
SHORTCIRCUIT
PROTECTION
-
+
OVERVOLTAGE
PROTECTION
GND
Description
The KA378R05 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 KA378R05 is below 0.5V in full rated
current(3A). This regulator has various function such as
peak current protection, thermal shut down, overvoltage
protection and output disable function.
3
1.Vin 2. Vo 3. GND 4. Vdis
TO-220F-4L
1
Q1
www.fairchildsemi.com
R1
R2
2
Vo
Rev. 1.0.2

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KA378R05 Summary of contents

Page 1

... The KA378R05 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 KA378R05 is below 0.5V in full rated current(3A). This regulator has various function such as peak current protection, thermal shut down, overvoltage protection and output disable function ...

Page 2

... KA378R05 Absolute Maximum Ratings Parameter Input Voltage Disable Voltage Output Current Power Dissipation 1 Power Dissipation 2 Junction Temperature Operating Temperature Thermal Resistance, Junction-to-Case(Note2) Thermal Shutdown Temperature Storage Temperature Electrical Characteristics (Vin=7V, Io=1.5A, Ta=25 C, unless otherwise specified) Parameter Symbol Output Voltage Load Regulation Line Regulation ...

Page 3

... Figure 2. Quiescent Current vs. Input Voltage 5.06 5.04 5.02 5.00 4.98 4.96 4.94 4. 2.5 Figure 4. Output Voltage vs. Temperature(Tj) 0.6 0.5 0.4 0.3 0.2 0.1 0 100 125 o C) Figure 6. Dropout Voltage vs. Junction Temperature KA378R05 RL Input voltage Vin ( 100 125 o TEMPERATURE Tj( C) Io=3A 2.0A 1.0A 0. 100 125 o Junction temperature Tj( ...

Page 4

... KA378R05 Typical Perfomance Characteristics - TEMPERATURE Tj( Figure 7. Power Dissipation vs. Temperature(Ta) 4 (Continued) 75 100 125 o C) Figure 8. Overcurrent Protection Characteristics 100 100 100 1.0 1.0 1.0 2.0 2.0 2.0 3.0 3.0 3.0 4.0 4.0 4.0 5.0 5.0 5.0 6.0 6.0 6.0 Output Current(A) Output Current(A) (Typical Value) 7.0 7.0 7.0 ...

Page 5

... Typical Application Vin • required if regulator is located an appreciable distance from power supply filter. • Co improves stability and transient response.(Co > Vdis Figure 1. Application Circuit KA378R05 Vo GND Disable Signal 5 ...

Page 6

... KA378R05 Mechanical Dimensions Package 10.00 0.20 (5.00) (1.19) (7.62) 6 Dimensions in millimeters TO-220F-4L ø3.20 0.20 (1.00) 3-1.05MIN 3-1.30MAX 1.25MIN 1.50MAX 0.60 0.10 2.54TYP [2.54 ] 0.25 (1.19) 4.50 0.20 2.80 0.20 (1.00) 1.50 0.20 +0.10 0.50 –0.05 ...

Page 7

... Ordering Information Product Number KA378R05 TO-220F-4L Package Operating Temperature - KA378R05 7 ...

Page 8

... KA378R05 DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. ...

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