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SEMICONDUCTOR TECHNICAL DATA 2A ADJUSTABLE LOW DROP VOLTAGE REGULATOR The KIA278R00PI is a Low Drop Voltage Regulator suitable for various electronic equipments. It provides constant voltage power source with TO-220-4 terminal lead full molded PKG. The Regulator has multi function such as over current protection, overheat protection. A KIA278R00PI BIPOLAR LINEAR INTEGRATED CIRCUIT C O E L V V T S L K H R FEATURES Adjustable Output Voltage (Range : 1.5~30V) 1.0A Output Low Drop Voltage Regulator. Built in Over Current Protection, Over Heat Protection Function. J U D M N DIM MILLIMETERS _ A 10.00 + 0.20 _ B 15.00 + 0.20 _ C 2.70 + 0.20 _ D 0.60 + 0.10 _ 3.20 + 0.20 E _ F 3.50 + 0.10 _ G 15.70 + 0.20 _ H 0.40 + 0.10 14.3+0.2/-0.1 J _ 1.45+ 0.10 K _ 1.00 + 0.10 L 2.54 M _ N 4.50 + 0.20 _ O 7.5 + 0.1 _ P 1.50 + 0.10 R 5 S 8 _ T 1.30 + 0.1 _ U 3-1.00 + 0.1 _ V 1.30 + 0.1 1 2 3 4 DC INPUT (V IN ) DC OUTPUT (VO ) GND ADJUSTABLE TERMINAL (VADJ ) B P 1 2 3 4 MAXIMUM RATINGS (Ta=25 CHARACTERISTIC Input Voltage Output Current Power Dissipation 1 Power Dissipation 2 Junction Temperature Operating Temperature Storage Temperature Soldering Temperature (10sec) ) SYMBOL VIN IOUT PD1 PD2 Tj Topr Tstg Tsol RATING 35 2 1.5 15 125 -20 80 -30 125 260 UNIT V A W W Remark No heatsink with heatsink - 2004. 3. 9 Revision No : 0 G F TO-220IS-4 1/5 KIA278R00PI ELECTRICAL CHARACTERISTICS (Unless otherwise specified, VIN=15V, VO=10V, IO=1A, R1=470 CHARACTERISTIC Input Voltage Output Voltage Load Regulation Line Regulation Ripple Rejection Reference Voltage Temperature cofficient of reference Voltage DropOut Voltage Quiescent Current SYMBOL VIN VO Reg Load Reg Line R R R2=76 (Note1 : VIN=0.95Vout )) CONDITIONS to 10.5k MIN. 4.5 1.5 Refer to Fig.2 45 55 1.26 (Note1) TYP. 55 65 1.29 1.0 MAX. 35 30 2.0 2.5 1.32 0.5 10 UNIT V V % % dB V % V mA IO=5mA 2A VIN=11V~28V Cref=0 Cref=3.3 F Vref TC Vref VD IQ Tj=0~125 IO=2A IO=0A BLOCK DIAGRAM VIN 1 2 VOUT + 4 VADJ BANDGAP REFERENCE ASO PROTECTION OVER HEAT PROTECTION 3 GND 2004. 3. 9 Revision No : 0 2/5 KIA278R00PI Fig. 1 Standard Test Circuit 1 2 R2 A 4 3 Io VIN 0.33F A Iq R1 470 47F RL V VOUT = Vref x ( 1 + R1 ) = 1.29 x ( 1 + R1 ) R2 R2 Fig. 2 Ripple Rejection Circuit 1 + _ 2 R2 Cref 3.3F ein 4 3 A Io + _ VIN 0.33F A IQ R1 470 47F RL V f=120Hz(sine wave) ei=0.5Vrms RR=20log(ei/eo) 2004. 3. 9 Revision No : 0 3/5 KIA278R00PI Fig. 3 Ta - PD P D1 : No heat sink p D 2 : With infinite heat sink Fig. 4 RELATIVE OUTPUT VOLTAGE (%) 100 80 60 40 20 0 0 1.0 I O - VO 20 POWER DISSIPATION (W) PD 2 15 10 5 PD1 0 -25 0 50 100 150 2.0 3.0 4.0 AMBIENT TEMPERATURE Ta ( C) Note) Oblique line portion : Overheat protection may operate in this area. OUTPUT CURRENT I O (A) Fig. 5 T j REFERENCE VOLTAGE DEVIATION Vref (mV) 10 R1=470, R2=3.2K V IN =15V I O =1.0A VO 15 OUTPUT VOLTAGE Vo (V) Fig. 6 VIN - VO R1=470, R2=3.2K T j =25 C 5 10 RL= 0 5 R L=5 -5 -10 -25 0 25 50 75 100 125 0 0 5 10 15 JUNCTION TEMPERATURE T j ( C) INPUT VOLTAGE VIN (V) Fig. 7 T j - VD 0.5 0.4 0.3 0.2 I O=1A I O =2A I O=1.5A Fig. 8 T j - I q 10 QUIESCENT CURRENT I q (mA) 8 6 4 2 V IN =35V I O =0 DROPOUT VOLTAGE VD (V) 0.1 0 -25 0 25 50 I O =0.5A 0 75 100 125 -25 0 25 50 75 100 125 JUNCTION TEMPERATURE T j ( C) JUNCTION TEMPERATURE Tj ( C) 2004. 3. 9 Revision No : 0 4/5 KIA278R00PI Fig. 9 f - RR 80 RIPPLE REJECTION RR (dB) Cref=3.3F Cref=0 Fig. 10 I O - RR 80 RIPPLE REJECTION RR (dB) 70 Cref=3.3F 70 60 50 40 30 20 10 0 0.1 60 Cref=0 R1=470, R2=3.2K I O =1A T j =25 C ei=0.5Vrms RR=20 log (ei/eo) 50 40 30 R1=470, R2=3.2K T j =25 C ei=0.5Vrms f=120Hz (sine wave) RR=20 log (ei/eo) 1 10 100 0.1 0.5 OUTPUT CURRENT I O (A) 1.0 INPUT RIPPLE FREQUENCY f (kHz) 2004. 3. 9 Revision No : 0 5/5 |
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