KA78R12CTU Fairchild Semiconductor, KA78R12CTU Datasheet
KA78R12CTU
Specifications of KA78R12CTU
Available stocks
Related parts for KA78R12CTU
KA78R12CTU Summary of contents
Page 1
... THERMAL SHUTDOWN BANDGAP REFERENCE HIGH / LOW Vdis 4 1.4V ©2003 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
Electrical Characteristics (Vin = Note3 0.5A unless otherwise specified) Parameter KA78R33C KA78R05C KA78R08C Output voltage KA78R09C KA78R12C KA78R15C Load regulation Line regulation Ripple rejection ratio Dropout voltage Disable voltage high Disable voltage low Disable ...
Page 4
KA78RXXC-SERIES Typical Performance Characteristics KA78R33 5.25 4.50 3.75 RL= 3.00 2.25 RL=3.3 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 Input voltage Vin (V) Figure 1. Output Voltage vs. Input Voltage 0.5 1 1.5 ...
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 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 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=12 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=15 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 > Vin 1 4 Vdis Figure 1. Application Circuit Vo 2 ...
Page 17
Mechanical Dimensions Package Dimensions in millimeters TO-220F-4L KA78RXXC-SERIES 17 ...
Page 18
KA78RXXC-SERIES Mechanical Dimensions Package TO-220F-4L (Forming) 18 (Continued) Dimensions in millimeters ...
Page 19
Mechanical Dimensions Package TO-220F-4L (Short Lead) (Continued) KA78RXXC-SERIES Dimensions in millimeters NOTE 1. THESE DIMENSIONS DO NOT INCLUDE MOLD PROTRUSION REFERENCE ASS'Y OUT QUALITY TITLE PKG OUTLINE TO-220F-4L , SHORT LEAD TOLERANCE ...
Page 20
... KA78RXXC-SERIES Ordering Information Product Number KA78R33CTU KA78R05CTU KA78R08CTU KA78R09CTU KA78R12CTU KA78R15CTU KA78R33CYDTU KA78R05CYDTU TO-220F-4L(Forming) KA78R09CYDTU KA78R33CTSTU KA78R05CTSTU KA78R08CTSTU TO-220F-4L(Short Lead) KA78R09CTSTU KA78R12CTSTU 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 ...