KIA278R000P5

SEMICONDUCTOR TECHNICAL DATA 2.0A Adjustable Output Low Drop Voltage Regulator with Output ON/OFF control Function. E KIA278R000P5 BIPOLAR LINEAR INTEGRATED CIRCUIT A C G H DIM A B C D E F G H I J K L FEATURES B 2.0A Output Low Dropout Voltage Regulator. Very Low Dropout Voltage : 0.5V/Max (IOUT=2.0A) Built-in ON/OFF Control Terminal. : Active High Built-in Over Current, Over Heat Protection Function, ASO Protection Functions. Low Quiescent Current (Output OFF mode) : 0.5 A(Typ.) Adjustable Output Voltage Type : VOUT=Vref~7V Low Voltage Operation : Vopr(min.)=2.35V. I L D F M K J M N O P MILLIMETERS _ 10 + 0.2 _ 24.6 + 0.2 _ 3.5 + 0.1 _ 0.8 + 0.1 _ Φ3.2 + 0.2 1.7 _ 4.5 + 0.2 _ 2.8 + 0.2 0.5 _ 3.2 + 0.5 _ 8.2 + 0.7 1.5 5.0 2.0 _ 5.0 + 0.5 _ 16.5 + 0.5 MAXIMUM RATINGS (Ta=25 CHARACTERISTIC Input Voltage ON/OFF Control Voltage Adjustable Terminal Voltage Output Current Power Dissipation 1 (No heatsink) ) 12345 SYMBOL VIN VC VADJ IOUT PD1 PD2 Tj Topr Tstg RATING 10 10 7 2.0 1.5 15 150 -40 85 -40 150 UNIT V V V A W W 1 2 3 4 5 DC INPUT (VIN) ON/OFF CONTROL (VC) DC OUTPUT ADJUSTABLE TERMINAL(VADJ) GND TO-220IS-5 Power Dissipation 2 (Infinite Heatsink) Junction Temperature Operating Temperature Storage Temperature ELECTRICAL CHARACTERISTICS (Unless otherwise specified, VIN=5V, VO=3.3V, R1=1 CHARACTERISTIC Input Voltage Output Voltage Reference Voltage Load Regulation Line Regulation Temperature Coefficient of Output Votage Ripple Rejection Dropout Voltage Output ON state for control Voltage Output ON state for control Current Output OFF state for control Voltage Output OFF state for control Current Quiescent Current Quiescent Current (OFF Mode) SYMBOL VIN VOUT Vref Reg Load Reg Line TCVO RR VD VC(ON) IC(ON) VC(OFF) IC(OFF) IQ IQ(OFF) VC=0.4V IO=0 VC=0.4V VC=2.7V IO=5mA~2A VIN=4V~10V, IO=5mA Tj=0 125 , IO=5mA CONDITIONS MIN. 2.35 Vref 1.22 45 2.0 - , Tj=25 TYP. 1.25 0.2 0.2 1.0 60 1 0.5 N O P ) MAX. 10 7 1.28 2 1 0.5 200 0.8 -0.4 2 5 V A V A mA A UNIT V V V % % % dB IOUT=0.3A, f=120Hz, Vripple=0.5Vrms, VIN=5V, VOUT=3V - 2007. 9. 18 Revision No : 1 1/4 KIA278R000P5 Fig. 1 Test Circuit VIN 1 3 VO R2 A IO V CIN 0.33µF A 2 5 4 COUT 47µF 1kΩ R1 RL V A VC IQ Vo=Vrefx ( 1 R2 ) R1 Fig. 2 Ripple Rejection Circuit VO 1 3 R2 ei CIN VIN A 2 4 5 IO COUT 47µF 0.33µF V eo 2.7V IQ R1 1kΩ RL 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 3 VO R2 2 4 5 VIN COUT R1 1kΩ CIN Load ON/OFF Signal High : Output ON Low or Open : Output OFF [R1=1kΩ, Vref Nearly = 1.25V] ( ) 2/4 2007. 9. 18 Revision No : 1 KIA278R000P5 Fig. 4 IO - VO 5.0 Vref (mV) Fig. 5 Ta - Vref 50 40 30 20 10 0 -10 -20 -30 -40 -50 -50 -25 0 25 50 75 100 125 VIN=5V, VC=2.7V, IO=1A R1=1kΩ, R2=1.4kΩ CIN=100µF, CO=100µF OUTPUT VOLTAGE VO (V) 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 0 0.5 1.0 1.5 2.0 5.5V 2.5 3.0 3.5 4.0 OUTPUT CURRENT IO (A) REFERENCE VOLTAGE DEVIATION 4.5 VC=2.7V, Ta=25 C R1=1kΩ, R2=1.4kΩ CIN=0.33µF, CO=47µF JUNCTION TEMPERATURE Tj ( C) 5.0 CIRCUIT OPERATING CURRENT IBIAS (mA) Fig. 6 VIN- VO VC=2.7V, Ta=25 C R1=1kΩ, R2=1.4kΩ CIN=0.33µF, CO=47µF Fig. 7 VIN - IBIAS 60 50 40 30 20 10 0 0 1 2 3 4 5 6 7 8 9 10 RL=1.5Ω (Io=2A) RL=3Ω (Io=1A) RL= Ω (Io=0A) VC=2.7V Ta=25 C CIN=0.33µF, CO=47µF OUTPUT VOLTAGE VO (V) 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 0 1 2 3 4 5 RL=1.5Ω (Io=2A) RL=3Ω (Io=1A) RL= Ω (Io=0A) 6 7 8 9 10 INPUT VOLTAGE VIN (V) INPUT VOLTAGE VIN (V) Fig. 8 Tj - VD QUIESCENT CURRENT IQ (mA) DROPOUT VOLTAGE VD (V) 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 -50 -25 0 25 50 75 100 125 Io=1A Io=2A VIN=2.85V, VC=2.7V R1=1kΩ, R2=1.4kΩ CIN=100µF, CO=100µF Fig. 9 Tj - IQ 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) JUNCTION TEMPERATURE Tj ( C) 2007. 9. 18 Revision No : 1 3/4 KIA278R000P5 Fig.10 fRIP - R.R 80 Fig. 11 IOUT - R.R RIPPLE REJECTION RATION R.R. (dB) 80 75 70 65 60 55 50 45 40 35 30 0.0 0.2 0.4 0.6 0.8 ei(rms)=0.5V, f=120Hz VIN=VO(Typ.)+2V, VC=2.7V CO=47µF, Ta=25 C, R1=1kΩ, R2=1.4kΩ RIPPLE REJECTION R.R (dB) 75 70 65 60 55 50 45 40 35 30 0.0 0.2 0.4 0.6 0.8 ei(rms)=0.5V, f=120Hz, VC=2.7V VIN=VO(Typ.)+2V, CO=47µF, Ta=25 C, R1=1kΩ, R2=1.4kΩ 1.0 1.2 1.4 1.6 1.8 2.0 1.0 1.2 1.4 1.6 1.8 2.0 INPUT RIPPLE FREQUENCY fIN (kHz) OUTPUT CURRENT IO (A) Fig. 12 PD - Ta POWER DISSIPATION PD (W) 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