A278R33PIC KODENSHI | Alldatasheet

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Technical content

Description

The A278Rxx Series is a low dropout voltage regulator suitable for various electronic equipments. It provides constant voltage power source with TO-220F-4SL lead fu ll-mold package. Dropout voltage of A278Rxx Series is below Max.0.5V in full rated current (2.0A). This regulat or has various functions such as current limit protection, over voltage protection and output on/off control. F e a t u r e s P i n C o n n e c t i o n

  • 2.0A output low dropout regulator
  • TO-220F-4SL full-mold package (4pin)
  • Current limit protection
  • Over voltage protection
  • Thermal shutdown protection
  • With output on/off control (At typical 1.5V)
  • Control pin open or high signal, output on Device Selection Guide Device Output Voltage A278R33PIC 3.3V A278R35PIC 3.5V A278R05PIC 5.0V A278R06PIC 6.0V A278R08PIC 8.0V A278R09PIC 9.0V A278R12PIC 12.0V Product Marking Package A278RxxPIC A278RxxPI TO-220F-4SL 1. INPUT 2. OUTPUT 3. GROUND 4. ON/OFF CONTROL 2 3 4 A278RxxPI(①) YYWW(②)

Ordering Information

① Device Code ② Year & Week Code

A b s o l u t e M a x i m u m R a t i n g s [Ta=25℃] Characteristic Symbol Rating Unit 18(All Others) V Input V oltage V I 25(A278R12PIC) V Control Input V oltage V CT 18 V PD1(No Heatsink) 2.0 W Power Dissipation PD2(With Heatsink) 20 W Junction Temperature T J 150 °C Operating Temperature Range T opr -20 ~ 80 °C Storage Temperature Range T stg -55 ~ 150 °C

Electrical Characteristics

(VI = VO+2V , Io = 1.0A, VCT(High)=2.7V , Ta = 25°C, unless otherwise specified) Electric Characteristic Symbol Conditions Min. Typ. Max. Unit A278R33PIC - 3.22 3.3 3.38 V A278R35PIC - 3.41 3.5 3.59 V A278R05PIC - 4.88 5.0 5.12 V A278R06PIC - 5.85 6.0 6.15 V A278R08PIC - 7.80 8.0 8.20 V A278R09PIC - 8.78 9.0 9.22 V Output V oltage V O A278R12PIC - 11.7 12.0 12.3 V Line Regulation V △ O( VI)△ Note1, I O=1.0A - 0.5 2.5 % Load Regulation V △ O(△IL) 5mA ≤IO≤2.0A - 0.1 2.0 % Quiescent Current I QC I O=0mA - - 10 mA Ripple Rejection Ratio RR (VO+2V)≤VI≤12V , IO=50mA f=120Hz 45 55 - dB IO=1.0A - - 0.3 V Dropout V oltage V DROP IO=2.0A - - 0.5 V Control V oltage High V CT(High) I O=0mA, Output ON 2.0 - - V Control V oltage Low V CT(Low) I O=0mA, Output OFF - - 0.8 V Control Bias Current High I CT(High) V CT(High) = 2.7V - - 20 μA Control Bias Current Low I CT(Low) V CT(Low) = 0.4V - - -0.4 mA Note 1. A278R33: VI= 4 . 3 V ~ 1 2 V A 2 7 8 R 3 5 : VI= 4 . 5 V ~ 1 2 V A278R05: VI= 6 V ~ 1 2 V A 2 7 8 R 0 6 : V I = 7 V ~ 1 5 V A278R08: VI= 9 V ~ 1 6 V A 2 7 8 R 0 9 : VI=10V~16V A278R12: VI=12V~16V ㎌ ㎌ ◈ Test Circuit of A278RxxPIC

Electrical Characteristic Curves Fig.2 Ta vs. PD Ambient Temperature Ta [˚C] 100 50 12575 150 Power dissipation PD [W] Without Heat Sink Relative Output V oltage [%] Output Current IO [A] 100 A278RxxPIC Fig.1 IO vs. VO Fig.3 VI vs. IQC Quiescent Current IQC [mA] 4 2 60 1210 8 Input V oltage VI [V] A278R33PIC VI=0V~12V IO=0.0A Fig.6 VI vs. IQC Quiescent Current IQC [mA] Input V oltage VI [V] A278R08PIC VI=0V~15V IO=0.0A Fig.7 VI vs. IQC Quiescent Current IQC [mA] Input V oltage VI [V] A278R09PIC VI=0V~15V IO=0.0A Fig.4 VI vs. IQC Quiescent Current IQC [mA] 4 2 6 0 12108 Input V oltage VI [V] IO=1.0A IO=2.0A A278R05PIC VI=0V~12V IO=0.0A

Electrical Characteristic Curves Relative Output V oltage [%] Control V oltage VCT [V] 125 100 A278RxxPIC Fig.10 VCT vs. VO Fig.11 Tj vs. VO Output V oltage VO [V] 5.2 5.0 5.1 4.9 4.8 4.7 25 0 50 -25 12510075 Junction Temperature Tj [℃] A278R05PIC IO=1.0A Fig.9 Tj vs. IQC Quiescent Current IQC [mA] 25 0 50 -25 12510075 Junction Temperature Tj [℃] A278RxxPIC IO=0.0A Fig.8 VI vs. IQC Quiescent Current IQC [mA] 8 4 12 0 242016 Input V oltage VI [V] A278R12PIC VI=0V~20V IO=0.0A

The AUK Corp. products are intended for the use as components in general electronic equipment (Office and co mmunication equipment, m easuring equipment, home appliance, etc.). Please make sure that you consult with us before you use these AUK Corp. products in equipments which require high quality and / or reliability, and in equipments which could have major impact to th e welfare of human life(atomi c energy control, airplane, spaceship, transportation, co mbustion control, all types of safety device, etc.). AUK Corp. cannot accept liability to any damage which may occur in case these AUK Corp. products were used in the mentioned equi pments without prior consultation with AUK Corp.. Specifications mentioned in this publication are subject to change without notice.