ka278r09c Fairchild Semiconductor, ka278r09c Datasheet
ka278r09c
Available stocks
Related parts for ka278r09c
ka278r09c Summary of contents
Page 1
... SHORTCIRCUIT 1.4V PROTECTION 3 GND (KA278R33/05/51/09/12C) ©2005 Fairchild Semiconductor Corporation Description The KA278RXXC is a low-dropout voltage regulator suit- able for various electronic equipments. It provides constant voltage power source with TO-220-4 lead full mold package. The dropout voltage of KA278RXXC is below 0.5V in full rated current(2A). This regulator has various functions such as a peak current protection, a thermal shut down, an overvoltage protection ...
Page 2
KA278RXXC-SERIES Absolute Maximum Ratings KA278RXXC, KA278RA05C 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 Vin 35 KA278RXXC Vdis 35 ...
Page 3
... Clamping pressure 60psi through 12mm diameter cylinder. -. Thermal grease applied between PKG and heat sink fixture. 3. KA278R33C : Vin = 5V KA278R05C : Vin = 7V KA278R09C : Vin = 11V KA278R12C : Vin = 15V 4. KA278R33C : Vin =4 to 10V KA278R05C, KA278R51C : Vin=6 to 12V KA278R09C : Vin=10 to 25V KA278R12C : Vin = 13V to 29V Symbol Conditions - - Vo - ...
Page 4
KA278RXXC-SERIES Typical Performance Characteristics KA278R33C 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 ...
Page 5
Typical Performance Characteristics - TEMPERATURE Tj( Figure 7. Power Dissipation vs. Temperature(Tj) 4.75 4.50 4.25 4.00 3.75 3. Input-output differential voltage Vin-Vo (V) Figure 9. Output ...
Page 6
KA278RXXC-SERIES Typical Performance Characteristics KA278R05C RL= 4 RL=2 Input voltage Vin (V) Figure 1. Output Voltage vs. Input Voltage 0.5 1 ...
Page 7
Typical Performance Characteristics - TEMPERATURE Tj( C) Figure 7. Power Dissipation vs. Temperature(Tj) 4.75 4.50 4.25 4.00 3.75 3. Input-output differential voltage Vin-Vo (V) Figure ...
Page 8
KA278RXXC-SERIES Typical Performance Characteristics KA278R51C RL= 4 RL=2 Input voltage Vin (V) Figure 1. Output Voltage vs. Input Voltage 0.5 1 1.5 ...
Page 9
Typical Performance Characteristics -25 TEMPERATURE Tj( Figure 7. Power Dissipation vs. Temperature(Tj = 0.5V ...
Page 10
... Typical Performance Characteristics KA278R09C RL=4 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) (Continued) ...
Page 11
Typical Performance Characteristics - TEMPERATURE Tj( C) Figure 7. Power Dissipation vs. Temperature(Tj) 4.75 4.50 4.25 4.00 3.75 3. Input-output differential voltage Vin-Vo (V) Figure 9. ...
Page 12
KA278RXXC-SERIES Typical Performance Characteristics KA278R12C 15.0 12.5 RL= 10.0 RL= 6 7.5 5.0 2 Input voltage Vin (V) Figure 1. Output Voltage vs. Input Voltage 15.0 12.5 10.0 7.5 5.0 2 0.5 1 ...
Page 13
Typical Performance Characteristics - TEMPERATURE Tj( Figure 7. Power Dissipation vs. Temperature(Tj) 4.75 4.75 4.50 4.50 4.25 4.25 4.00 4.00 3.75 3.75 3.50 3. ...
Page 14
KA278RXXC-SERIES Typical Performance Characteristics KA278RA05C RL= 4 RL=2 Input voltage Vin (V) Figure 1. Output Voltage vs. Input Voltage 5.06 5.04 5.02 5.00 4.98 4.96 4.94 4.92 - ...
Page 15
Typical Performance Characteristics 100 100 3.0 3 1.0 1.0 2.0 2.0 Output Current(A) Output Current(A) Figure 7. Overcurrent Protection Characteristics(Typical value) (Continued) 4.75 4.50 4.25 4.00 3.75 3.50 ...
Page 16
KA278RXXC-SERIES Typical Application KA278R33/05/51/09/12C • required if regulator is located at an appreciable distance from power supply filter. • Co improves stability and transient response.(Co > KA278RA05 Input Input Input ...
Page 17
Mechanical Dimensions Package Dimensions in millimeters TO-220F-4L KA278RXXC-SERIES 17 ...
Page 18
KA278RXXC-SERIES Mechanical Dimensions Package TO-220F-4L (Forming) 18 (Continued) Dimensions in millimeters ...
Page 19
Mechanical Dimensions Package TO-220F-4L (Short Lead) (Continued) Dimensions in millimeters NOTE 1. THESE DIMENSIONS DO NOT INCLUDE MOLD PROTRUSION REFERENCE ASS'Y OUT QUALITY KA278RXXC-SERIES TITLE PKG OUTLINE D TO-220F-4L , SHORT LEAD ...
Page 20
... Product Number KA278R33CTU KA278R05CTU KA278R51CTU TO-220F-4L KA278R09CTU KA278R12CTU KA278RA05CTU KA278R33CYDTU KA278R05CYDTU KA278R09CYDTU TO-220F-4L(Forming) KA278R12CYDTU KA278RA05CYDTU KA278R33CTSTU KA278R05CTSTU TO-220F-4L (Short Lead) KA278R12CTSTU 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 ...