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KA278R12CYDTU

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KA278R12CYDTU

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Part Number KA278R12CYDTU
Manufacturer Fairchild/ON Semiconductor
Description IC REG LINEAR 12V 2A TO220F-4L
Datasheet KA278R12CYDTU Datasheet
Package TO-220-4 Full Pack (Formed Leads)
In Stock 1,273 piece(s)
Unit Price $ 1.3100 *
Lead Time Can Ship Immediately
Estimated Delivery Time Dec 1 - Dec 6 (Choose Expedited Shipping)
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Part Number # KA278R12CYDTU (PMIC - Voltage Regulators - Linear) is manufactured by Fairchild/ON Semiconductor and distributed by Heisener. Being one of the leading electronics distributors, we carry many kinds of electronic components from some of the world’s top class manufacturers. Their quality is guaranteed by its stringent quality control to meet all required standards.

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KA278R12CYDTU Specifications

ManufacturerFairchild/ON Semiconductor
CategoryIntegrated Circuits (ICs) - PMIC - Voltage Regulators - Linear
Datasheet KA278R12CYDTUDatasheet
PackageTO-220-4 Full Pack (Formed Leads)
Series-
Output ConfigurationPositive
Output TypeFixed
Number of Regulators1
Voltage - Input (Max)35V
Voltage - Output (Min/Fixed)12V
Voltage - Output (Max)-
Voltage Dropout (Max)0.5V @ 2A
Current - Output2A
Current - Quiescent (Iq)-
Current - Supply (Max)10mA
PSRR-
Control Features-
Protection FeaturesOver Current, Over Temperature, Over Voltage, Short Circuit
Operating Temperature-20°C ~ 80°C
Mounting TypeThrough Hole
Package / CaseTO-220-4 Full Pack (Formed Leads)
Supplier Device PackageTO-220F-4L (Forming)

KA278R12CYDTU Datasheet

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To learn more about ON Semiconductor, please visit our website at www.onsemi.com Please note: As part of the Fairchild Semiconductor integration, some of the Fairchild orderable part numbers will need to change in order to meet ON Semiconductor’s system requirements. Since the ON Semiconductor product management systems do not have the ability to manage part nomenclature that utilizes an underscore (_), the underscore (_) in the Fairchild part numbers will be changed to a dash (-). This document may contain device numbers with an underscore (_). Please check the ON Semiconductor website to verify the updated device numbers. The most current and up-to-date ordering information can be found at www.onsemi.com. Please email any questions regarding the system integration to Fairchild_questions@onsemi.com. Is Now Part of ON Semiconductor and the ON Semiconductor logo are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.

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K A 278R X X C -S eries — 2 A O u tp u t L o w D ro p o u t V o ltag e R eg u lato rs © 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com KA278RXXC-Series Rev. 1.1.0 1 July 2013 KA278RXXC-Series 2 A Output Low Dropout Voltage Regulators Features KA278RXXC-Series (33 / 05 / 12) • 3.3 V, 5 V, 12 V Output Low-Dropout Voltage Regulator • TO-220 Full-Mold Package (4 Pin) • Over-Current Protection, Thermal Shutdown • Over-Voltage Protection, Short-Circuit Protection • Output Disable Function KA278RA05C • Nominal 5 V Output without Adjusting • Output Adjustable between 1.27 V and 32 V • 2 A Output Low-Dropout Voltage Regulator • TO-220 Full-Mold Package (4 Pin) • Over-Current Protection, Thermal Shutdown • Over-Voltage Protection, Short-Circuit Protection Ordering Information Part Number Operating Temperature Range Top Mark Package Packing Method KA278R33CTU -20 to 80°C 278R33 TO-220F 4L Rail KA278R05CTU 278R05 KA278R12CTU 278R12 KA278RA05CTU 278RA05 KA278R12CYDTU 278R12 TO-220F 4L (Forming) Description The KA278RXXC is a low-dropout voltage regulator suit- able for various electronic equipment. It provides a con- stant voltage power source in a TO-220 4-lead full-mold package. The dropout voltage is below 0.5 V in full-rated current (2 A). This regulator has peak current protection, thermal shutdown, and over-voltage protection. TO-220F 4L 1. VIN 2. VO 3. GND 4. Vdis - KA278RXXC (33 / 05 / 12) 1 1.VIN 2. VO 3. GND 4. Vadj - KA278RA05C

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K A 278R X X C -S eries — 2 A O u tp u t L o w D ro p o u t V o ltag e R eg u lato rs © 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com KA278RXXC-Series Rev. 1.1.0 2 Block Diagram Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera- ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi- tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Values are at TA = 25°C unless otherwise noted. Note: 1. Junction-to-case thermal resistance test environments: - Pneumatic heat sink fixture; - Clamping pressure 60 psi through 12 mm diameter cylinder; - Thermal grease applied between PKG and heat sink fixture. Figure 1. KA278R33 / 05 / 12C Figure 2. KA278RA05C Symbol Parameter Value Unit VIN Input Voltage 35 V Vdis Disable Voltage KA278RXXC 35 V IO Output Current 2.0 A PD1 Power Dissipation 1 No Heat-Sink 1.5 W PD2 Power Dissipation 2 With Heat-Sink 15 W Tj Junction Temperature 150 °C Topr Operating Temperature -20 to 80 °C Rθjc Thermal Resistance, Junction-to Case (1) 2.9 °C/W Rθja Thermal Resistance, Junction-to-Air 48.51 °C/W THERMAL SHUTDOWN BANDGAP REFERENCE OVERVOLTAGE PROTECTION SOA PROTECTION SHORTCIRCUIT PROTECTION 1 4 3 2Vin Vdis Vo GND HIGH / LOW OUTPUT ON / OFF Q1 R1 R2 - + - + 1.4V THERMAL SHUTDOWN BANDGAP REFERENCE OVERVOLTAGE PROTECTION SOA PROTECTION SHORTCIRCUIT PROTECTION 1 4 3 2Vin Vadj Vo GND Q1 Rin Rref + -

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K A 278R X X C -S eries — 2 A O u tp u t L o w D ro p o u t V o ltag e R eg u lato rs © 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com KA278RXXC-Series Rev. 1.1.0 3 Electrical Characteristics VIN = Note 3, IO = 1.0 A, TA = 25°C, unless otherwise specified. Notes: 2. These parameters, although guaranteed, are not 100% tested in production. 3. KA278R33C: VIN = 5 V; KA278R05C: VIN = 7 V; KA278R12C: VIN = 15 V. 4. KA278R33C: VIN =4 V to 10 V; KA278R05C: VIN = 6 V to 12 V; KA278R12C: VIN = 13 V to 29 V. Symbol Parameter Test Conditions Min. Typ. Max. Unit VO Output Voltage KA278R33C 3.22 3.30 3.38 VKA278R05C 4.88 5.00 5.12 KA278R12C 11.70 12.00 12.30 Rload Load Regulation 5 mA < IO < 2 A 0.1 2.0 % Rline Line Regulation (4) 0.5 2.5 % RR Ripple Rejection Ratio(2) 45 55 dB Vdrop Dropout Voltage IO = 2 A 0.5 V VdisH Disable Voltage High KA278RXXC Output Active 2.0 V VdisL Disable Voltage Low KA278RXXC Output Disabled 0.8 V IdisH Disable Bias Current High KA278RXXC Vdis = 2.7 V 20 μA IdisL Disable Bias Current Low KA278RXXC Vdis = 0.4 V -0.4 mA Iq Quiescent Current IO = 0 A 10 mA Vref Reference Voltage KA278RA05C 1.24 1.27 1.30 V

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K A 278R X X C -S eries — 2 A O u tp u t L o w D ro p o u t V o ltag e R eg u lato rs © 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com KA278RXXC-Series Rev. 1.1.0 4 Typical Performance Characteristics (KA278R33C) Figure 3. Output Voltage vs. Input Voltage Figure 4. Quiescent Current vs. Input Voltage Figure 5. Output Voltage vs. Disable Voltage Figure 6. Output Voltage vs. Temperature (Tj) Figure 7. Quiescent Current vs. Temperature (Tj) Figure 8. Dropout Voltage vs. Junction Temperature Input voltage Vin (V) 4.50 3.75 3.00 2.25 1.50 0.75 5.25 0 0 2 4 6 8 10 O ut p ut v ol ta ge V o( V ) RL= RL=3.3Ω 8 0 5 10 15 20 0 20 40 60 80 100 ∞RL= Q ui es ce nt c ur re nt Iq (m A ) Input voltage Vin(V) 0 O ut pu t vo lta ge V o( V ) 3 Disable voltage Vdis (V) 0.5 1.51 2 2.5 4.50 3.75 3.00 2.25 1.50 0.75 5.25 0 3.34 3.32 3.30 3.36 -25 O ut pu t vo lta ge V o( V ) TEMPERATURE Tj(oC) 75 1250 25 50 100 3.26 3.24 3.22 3.28 10 8 6 4 2 0 Q ui es ce nt c ur re nt I q( m A ) Junction temperature Tj(oC) 75 1250 25 50 100-25 -25 0 25 50 75 100 125 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 2.0A D ro p ou t v ol ta ge V dr op [V ] Junction Temp Tj [℃]

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K A 278R X X C -S eries — 2 A O u tp u t L o w D ro p o u t V o ltag e R eg u lato rs © 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com KA278RXXC-Series Rev. 1.1.0 5 Typical Performance Characteristics (Continued) Figure 9. Power Dissipation vs. Temperature (Tj) Figure 10. Over-Current Protection Characteristics (Typical Value) Figure 11. Output Peak Current vs. Input-Output Differential Voltage -25 P ow er d is si pa tio n P D (W ) TEMPERATURE Tj(oC) 75 1250 25 50 100 15 10 5 20 0 Output Current(A) R el at iv e ou tp ut v ol ta ge (% ) 3.0 5.00 1.0 2.0 4.0 80 60 20 100 0 40 6.0 R el at iv e ou tp ut v ol ta ge (% ) R el at iv e ou tp ut v ol ta ge (% ) 0 1 2 3 4 5 6 3.50 3.75 4.00 4.25 4.50 4.75 O ut pu t p ea k cu rr en t I op ( A ) Input-output differential voltage Vin-Vo (V)

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K A 278R X X C -S eries — 2 A O u tp u t L o w D ro p o u t V o ltag e R eg u lato rs © 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com KA278RXXC-Series Rev. 1.1.0 6 Typical Performance Characteristics (KA278R05C) Figure 12. Output Voltage vs. Input Voltage Figure 13. Quiescent Current vs. Input Voltage Figure 14. Output Voltage vs. Disable Voltage Figure 15. Output Voltage vs. Temperature (Tj) figure 16. Quiescent Current vs. Temperature (Tj) Figure 17. Dropout Voltage vs. Junction Temperature 5 10 15 Input voltage Vin (V) 6 5 4 3 2 1 7 0 0 O u tp u t vo lta g e V o( V ) RL= RL=2.5Ω 8 0 5 10 15 20 0 20 40 60 80 100 120 ∞RL= Q ui es ce nt c ur re nt Iq (m A ) Input voltage Vin(V) 7 6 5 4 3 0 0 O ut pu t vo lta ge V o( V ) 3 Disable voltage Vdis (V) 0.5 1.5 2 1 1 2 2.5 5.04 5.02 5.00 5.06 -25 O ut pu t vo lta ge V o (V ) TEMPERATURE Tj(oC) 75 1250 25 50 100 4.96 4.94 4.92 4.98 8 6 4 2 0 Q ui es ce n t cu rr e nt I q( m A ) Junction temperature Tj(oC) 75 1250 25 50 100-25 -25 0 25 50 75 100 125 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 2.0A D ro p ou t v ol ta ge V dr op [V ] Junction Temp Tj [℃]

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K A 278R X X C -S eries — 2 A O u tp u t L o w D ro p o u t V o ltag e R eg u lato rs © 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com KA278RXXC-Series Rev. 1.1.0 7 Typical Performance Characteristics (Continued) Figure 18. Power Dissipation vs. Temperature (Tj) Figure 19. Over-Current Protection Characteristics (Typical Value) Figure 20. Output Peak Current vs. Input-Output Differential Voltage -25 P ow e r di ss ip a tio n P D (W ) TEMPERATURE Tj(oC) 75 1250 25 50 100 15 10 5 20 0 Output Current(A) R el at iv e ou tp ut v ol ta ge (% ) 3.0 5.00 1.0 2.0 4.0 80 60 20 0 40 6.0 R el at iv e ou tp ut v ol ta ge (% ) 0 1 2 3 4 5 6 3.50 3.75 4.00 4.25 4.50 4.75 O ut pu t p ea k cu rr en t I op ( A ) Input-output differential voltage Vin-Vo (V)

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K A 278R X X C -S eries — 2 A O u tp u t L o w D ro p o u t V o ltag e R eg u lato rs © 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com KA278RXXC-Series Rev. 1.1.0 8 Typical Performance Characteristics (KA278R12C) Figure 21. Output Voltage vs. Input Voltage Figure 22. Quiescent Current vs. Input Voltage Figure 23. Output Voltage vs. Disable Voltage Figure 24. Output Voltage vs. Temperature (Tj) 25. Quiescent Current vs. Temperature (Tj) Figure 26. Dropout Voltage vs. Junction Temperature 5 10 15 Input voltage Vin (V) 15.0 12.5 10.0 7.5 5.0 2.5 0 0 O ut pu t vo lta ge V o( V ) RL= RL= 6Ω 20 25 8 0 5 10 15 20 0 20 40 60 80 100 120 ∞RL= Q ui es ce nt c ur re nt Iq (m A ) Input voltage Vin(V) 0 O ut pu t vo lta ge V o( V ) 3 Disable voltage Vdis (V) 0.5 1.51 2 2.5 15.0 12.5 10.0 7.5 5.0 2.5 0 12.04 12.02 12.00 -25 O u tp u t vo lta ge V o (V ) TEMPERATURE Tj(oC) 75 1250 25 50 100 11.96 11.94 11.92 11.98 10 8 6 4 2 0 Q ui e sc en t cu rr e nt I q( m A ) Junction temperature Tj(oC) 75 1250 25 50 100-25 -25 0 25 50 75 100 125 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 2.0A D ro p ou t v ol ta ge V dr op [V ] Junction Temp Tj [℃]

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