SEMICONDUCTOR KIA278R000P5 TECHNICAL DATA BIPOLAR LINEAR INTEGRATED CIRCUIT 2.0A Adjustable Output Low Drop Voltage Regulator with Output ON/OFF control Function. G A C H P FEATURES N O B 2.0A Output Low Dropout Voltage Regulator. Very Low Dropout Voltage : 0.5V/Max (IOUT=2.0A) G H I I Built-in ON/OFF Control Terminal. : Active High L Built-in Over Current, Over Heat Protection Function, J K L D ASO Protection Functions. F Low Quiescent Current (Output OFF mode) : 0.5 A(Typ.) MILLIMETERS _ 0.2 10 + _ 0.2 24.6 + _ 0.1 3.5 + _ 0.1 0.8 + _ 0.2 Φ3.2 + 1.7 _ 0.2 4.5 + _ 0.2 2.8 + 0.5 _ 0.5 3.2 + _ 0.7 8.2 + 1.5 5.0 2.0 _ 0.5 5.0 + _ 0.5 16.5 + DIM A B C D E F E M J M N O K Adjustable Output Voltage Type : VOUT=Vref~7V P Low Voltage Operation : Vopr(min.)=2.35V. MAXIMUM RATINGS (Ta=25 ) 1 2 3 4 5 1 2 3 4 5 CHARACTERISTIC SYMBOL RATING UNIT Input Voltage VIN 10 V ON/OFF Control Voltage VC 10 V Adjustable Terminal Voltage VADJ 7 V Output Current IOUT 2.0 A Power Dissipation 1 (No heatsink) PD1 1.5 W Power Dissipation 2 (Infinite Heatsink) PD2 15 W Tj 150 Operating Temperature Topr -40 85 Storage Temperature Tstg -40 150 Junction Temperature TO-220IS-5 ELECTRICAL CHARACTERISTICS (Unless otherwise specified, VIN=5V, VO=3.3V, R1=1 CHARACTERISTIC DC INPUT (VIN) ON/OFF CONTROL (VC) DC OUTPUT ADJUSTABLE TERMINAL(VADJ) GND , Tj=25 ) SYMBOL CONDITIONS MIN. TYP. MAX. UNIT VIN - 2.35 - 10 V Output Voltage VOUT - Vref - 7 V Reference Voltage Vref - 1.22 1.25 1.28 V Input Voltage Load Regulation Reg Load IO=5mA~2A - 0.2 2 % Line Regulation Reg Line VIN=4V~10V, IO=5mA - 0.2 1 % - % dB Temperature Coefficient of Output Votage TCVO Tj=0 , IO=5mA - Ripple Rejection R R IOUT=0.3A, f=120Hz, Vripple=0.5Vrms, VIN=5V, VOUT=3V 45 60 - Dropout Voltage VD - - - 0.5 Output ON state for control Voltage VC(ON) - 2.0 - - V Output ON state for control Current IC(ON) - - 200 A Output OFF state for control Voltage VC(OFF) - - 0.8 V Output OFF state for control Current IC(OFF) VC=0.4V - - -0.4 A IO=0 - 1 2 mA VC=0.4V - 0.5 5 A IQ Quiescent Current Quiescent Current (OFF Mode) 2007. 9. 18 Revision No : 1 IQ(OFF) 125 VC=2.7V - 1.0 1/4 KIA278R000P5 Fig. 1 Test Circuit VIN 1 VO 3 R2 2 CIN 0.33µF A IO COUT 47µF 4 5 V A A VC Vo=Vrefx ( 1 1kΩ R1 IQ RL V R2 ) R1 Fig. 2 Ripple Rejection Circuit VO 1 3 R2 2 ei CIN 4 COUT 47µF 5 0.33µF 2.7V V IQ eo RL R1 1kΩ VIN A IO f=120Hz(sine wave) ei(rms)=0.5V IO=0.3A RR=20log(ei(rms) / eo(rms)) VIN=5V VO=3.0V(R1=1kΩ) Fig. 3 Typical Application Circuit 1 VO 3 R2 2 VIN 4 COUT 5 CIN Load R1 1kΩ ( ON/OFF Signal High : Output ON Low or Open : Output OFF ) [R1=1kΩ, Vref Nearly = 1.25V] 2007. 9. 18 Revision No : 1 2/4 OUTPUT VOLTAGE VO (V) 5.0 VC=2.7V, Ta=25 C R1=1kΩ, R2=1.4kΩ CIN=0.33µF, CO=47µF 4.5 4.0 3.5 3.0 2.5 2.0 5.5V 1.5 1.0 0.5 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 OUTPUT CURRENT IO (A) Fig. 6 VIN- VO OUTPUT VOLTAGE VO (V) 5.0 VC=2.7V, Ta=25 C R1=1kΩ, R2=1.4kΩ CIN=0.33µF, CO=47µF 4.5 4.0 3.5 3.0 2.5 2.0 RL=1.5Ω (Io=2A) RL=3Ω (Io=1A) RL= Ω (Io=0A) 1.5 1.0 0.5 0 0 1 2 3 4 5 6 7 8 9 10 INPUT VOLTAGE VIN (V) CIRCUIT OPERATING CURRENT IBIAS (mA) Fig. 4 IO - VO REFERENCE VOLTAGE DEVIATION Vref (mV) KIA278R000P5 Fig. 5 Ta - Vref 50 VIN=5V, VC=2.7V, IO=1A R1=1kΩ, R2=1.4kΩ CIN=100µF, CO=100µF 40 30 20 10 0 -10 -20 -30 -40 -50 -50 -25 0 QUIESCENT CURRENT IQ (mA) DROPOUT VOLTAGE VD (V) 0.35 Io=2A 0.25 0.2 Io=1A 0.15 0.1 0.05 0 -50 -25 0 25 50 75 100 JUNCTION TEMPERATURE Tj ( C) 2007. 9. 18 100 125 Fig. 7 VIN - IBIAS 60 VC=2.7V Ta=25 C CIN=0.33µF, CO=47µF 50 40 30 RL=1.5Ω (Io=2A) 20 RL=3Ω (Io=1A) 10 RL= Ω (Io=0A) 0 0 1 2 3 4 5 6 7 8 9 10 Fig. 9 Tj - IQ VIN=2.85V, VC=2.7V R1=1kΩ, R2=1.4kΩ CIN=100µF, CO=100µF 0.3 75 INPUT VOLTAGE VIN (V) 0.5 0.4 50 JUNCTION TEMPERATURE Tj ( C) Fig. 8 Tj - VD 0.45 25 Revision No : 1 125 2 VIN=5V, R1=1kΩ, R2=1.4kΩ, VC=2.7V, IO=0A, CIN=100µF CO=100µF 1.5 1 0.5 0 -50 -25 0 25 50 75 100 125 JUNCTION TEMPERATURE Tj ( C) 3/4 KIA278R000P5 Fig. 11 IOUT - R.R RIPPLE REJECTION R.R (dB) 80 75 70 65 60 55 50 45 40 ei(rms)=0.5V, f=120Hz, VC=2.7V VIN=VO(Typ.)+2V, CO=47µF, Ta=25 C, R1=1kΩ, R2=1.4kΩ 35 30 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 INPUT RIPPLE FREQUENCY fIN (kHz) RIPPLE REJECTION RATION R.R. (dB) Fig.10 fRIP - R.R 80 75 70 65 60 55 50 45 ei(rms)=0.5V, f=120Hz VIN=VO(Typ.)+2V, VC=2.7V CO=47µF, Ta=25 C, R1=1kΩ, R2=1.4kΩ 40 35 30 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 OUTPUT CURRENT IO (A) POWER DISSIPATION PD (W) Fig. 12 PD - Ta 20 THERMAL RESISTANCE J-A J-C C/W 8.33 83.3 15 10 5 0 -25 0 50 100 150 AMBIENT TEMPERATURE Ta ( C ) 2007. 9. 18 Revision No : 1 4/4