KA78R05C Fairchild Semiconductor, KA78R05C Datasheet

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KA78R05C

Manufacturer Part Number
KA78R05C
Description
The KA78RXXC is a low-dropout voltage regulator suitable for various electronic equipments
Manufacturer
Fairchild Semiconductor
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
KA78R05CTU
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
Company:
Part Number:
KA78R05CTU
Quantity:
35 845
Company:
Part Number:
KA78R05CTU
Quantity:
35 845
Features
• 1A/3.3V, 5V, 8V, 9V, 12V, 15V output low dropout
• TO-220 full-mold package (4pin)
• Overcurrent protection, thermal shutdown
• Overvoltage protection, short circuit protection
• With output disable function
Internal Block Diagram
©2011 Fairchild Semiconductor Corporation
KA78RXXC-Series
1A Output Low Dropout Voltage Regulators
voltage regulator
Vin
1
Vdis
4
HIGH / LOW
1.4V
BANDGAP REFERENCE
THERMAL SHUTDOWN
-
+
OUTPUT
ON / OFF
SHORT-CIRCUIT
SOA PROTECTION
SHORTCIRCUIT
PROTECTION
-
+
OVERVOLTAGE
PROTECTION
GND
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.
3
1. Vin 2. V
TO-220F-4L
1
O
3. GND 4. Vdis
Q1
www.fairchildsemi.com
R1
R2
2
Vo
Rev. 1.0.1

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KA78R05C Summary of contents

Page 1

... THERMAL SHUTDOWN BANDGAP REFERENCE HIGH / LOW 4 Vdis 1.4V ©2011 Fairchild Semiconductor Corporation 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). ...

Page 2

KA78RXXC-SERIES Absolute Maximum Ratings KA78RXXC Parameter Input voltage Disable voltage Output current Power dissipation 1 Power dissipation 2 Junction temperature Operating temperature Thermal resistance, junction-to case (Note2) Thermal resistance, junction-to-air (Note2) 2 Symbol Value Unit Vin 35 Vdis 35 Io ...

Page 3

... KA78R33C : Vin = 5V KA78R05C : Vin = 7V KA78R08C : Vin = 10V KA78R09C : Vin = 11V KA78R12C : Vin = 15V KA78R15C : Vin = 20V 4. KA78R33C : Vin = 4V to 10V KA78R05C : Vin = 6V to 12V KA78R08C : Vin = 9V to 25V KA78R09C : Vin = 10V to 25V KA78R12C : Vin = 13V to 29V KA78R15C : Vin = 16V to 30V Symbol Conditions ...

Page 4

KA78RXXC-SERIES Typical Performance Characteristics KA78R33 5.25 4.50 3.75 RL= 3.00 2.25 RL=3.3Ω 1.50 0. Input voltage Vin (V) Figure 1. Output Voltage vs. Input Voltage 5.25 4.50 3.75 3.00 2.25 1.50 0. 0.5 1 ...

Page 5

Typical Performance Characteristics - TEMPERATURE T Figure 7. Power Dissipation vs. Temperature(Tj) 2.75 2.50 2.25 2.00 1.75 1. Input-output differential voltage Vin-Vo (V) Figure 9. Output Peak Currenrt ...

Page 6

... KA78RXXC-SERIES Typical Performance Characteristics KA78R05C RL RL=5Ω Input voltage Vin (V) Figure 1. Output Voltage vs. Input Voltage 0.5 1 1.5 Disable voltage Vdis (V) Figure 3. Output Voltage vs. Disable Voltage - Junction temperature Tj( Figure 5. Quiescent Current vs. Temperature(Tj) ...

Page 7

Typical Performance Characteristics - TEMPERATURE T Figure 7. Power Dissipation vs. Temperature(Tj) 2.75 2.50 2.25 2.00 1.75 1. Input-output differential voltage Vin-Vo (V) Figure 9. Output Peak Currenrt ...

Page 8

KA78RXXC-SERIES Typical Performance Characteristics KA78R08C RL=8Ω Input voltage Vin (V) Figure 1. Output Voltage vs. Input Voltage ...

Page 9

Typical Performance Characteristics - TEMPERATURE T Figure 7. Power Dissipation vs. Temperature(Tj) 2.75 2.50 2.25 2.00 1.75 1. Input-output differential voltage Vin-Vo (V) Figure 9. Output Peak Currenrt vs. Input-Output ...

Page 10

KA78RXXC-SERIES Typical Performance Characteristics KA78R09C RL=9Ω Input voltage Vin (V) Figure 1. Output Voltage vs. Input Voltage ...

Page 11

Typical Performance Characteristics - TEMPERATURE TJ( Figure 7. Power Dissipation vs. Temperature(Tj) 2.75 2.50 2.25 2.00 1.75 1. Input-output differential voltage Vin-Vo (V) Figure 9. Output Peak Currenrt ...

Page 12

KA78RXXC-SERIES Typical Performance Characteristics KA78R12C 17.5 15.0 12.5 RL= 10.0 7.5 RL=12Ω 5.0 2 Input voltage Vin (V) Figure 1. Output Voltage vs. Input Voltage 17.5 15.0 12.5 10.0 7.5 5.0 2 0.5 ...

Page 13

Typical Performance Characteristics - TEMPERATURE TJ( Figure 7. Power Dissipation vs. Temperature(Tj) 2.75 2.50 2.25 2.00 1.75 1. Input-output differential voltage Vin-Vo (V) Figure 9. Output Peak Currenrt ...

Page 14

KA78RXXC-SERIES Typical Performance Characteristics KA78R15C 17.5 15.0 12.5 RL= 10.0 7.5 RL=15Ω 5.0 2 Input voltage Vin (V) Figure 1. Output Voltage vs. Input Voltage 17.5 15.0 12.5 10.0 7.5 5.0 2 0.5 ...

Page 15

Typical Performance Characteristics - TEMPERATURE Tj( Figure 7. Power Dissipation vs. Temperature(Tj) 2.75 2.50 2.25 2.00 1.75 1. Input-output differential voltage Vin-Vo (V) Figure 9. Output Peak Currenrt ...

Page 16

KA78RXXC-SERIES Typical Application • required if regulator is located at an appreciable distance from power supply filter. • Co improves stability and transient response.(Co > 47μF) 16 Vin 1 4 Vdis Figure 1. Application Circuit ...

Page 17

Mechanical Dimensions Package Dimensions in millimeters TO-220F-4L KA78RXXC-SERIES 17 ...

Page 18

... KA78RXXC-SERIES Ordering Information Product Number KA78R33CTU KA78R05CTU KA78R08CTU KA78R09CTU KA78R12CTU KA78R15CTU 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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