SICORE CX1085 3A Low dropout voltage regulator FEATURES Three Terminal Adjustable or Fixed Voltages 1.5V, 1.8V, 2.5V, 2.85V, 3.3V and 5.0V Output Current of 3A Operates Down to 1V Dropout Line Regulation: 0.2% Max. Load Regulation: 0.4% Max. TO-263-2,TO-263-3,TO252-2 and TO-220 package available TO-263-2 TO-263-3 APPLICATIONS High Efficiency Linear Regulators Post Regulators for Switching Supplies Microprocessor Supply Constant Current Regulators Power Management for Notebook Battery Chargers Notebook/Personal Computer Supplies Portable Instrumentation TO-252-2 TO-220 ORDERING INFORMATION PACKAGE TYPE TO-263-2&3 CX1085-ADJ CX1085-1.5 CX1085-1.8 CX1085-2.5 CX1085-2.85 CX1085-3.3 CX1085--5.0 TO-252-2 CX1085-ADJ CX1085-1.5 CX1085-1.8 CX1085-2.5 CX1085-2.85 CX1085-3.3 CX1085-5.0 OPERATING JUNCTION TEMPERATURE RANGE TO-220 CX1085-ADJ CX1085-1.5 CX1085-1.8 CX1085-2.5 CX1085-2.85 CX1085-3.3 CX1085-5.0 0 to 125° C 0 to 125° C 0 to 125° C 0 to 125° C 0 to 125° C 0 to 125° C 0 to 125° C CX1085 SICORE 3A Low dropout voltage regulator ELECTRICAL CHARACTERISTICS Electrical Characteristics at IOUT = 0 mA, and TJ = +25°C unless otherwise specified. Parameter Device Conditions Min Typ Load Regulation CX1085 (Notes 2, 3) Dropout CX1085 Voltage(VIN - VOUT) IOUT = 10 mA 10mA ≤IOUT ≤3A, 1.5V≤ (VIN - VOUT) ≤12V IOUT = 10 mA , 1.5V≤ (VIN - VOUT) ≤12V (VIN - VOUT) =3V, 10mA≤IOUT ≤5A ∆VOUT , ∆VREF = 1%, IOUT = 3A Current Limit (VIN - VOUT) = 5V Output Voltage CX1085 Line Regulation CX1085 CX1085 Minimum Load CX1085 Current Quiescent Current CX1085 Ripple Rejection CX1085 Thermal Regulation CX1085 Adjust Pin Current CX1085 Adjust Pin Current CX1085 Change Thermal Resistance CX1085 Junction-to-Case 5.0 (VIN - VOUT) = 12V VIN ≤12V f =120Hz , COUT = 22µF Tantalum, IOUT = 3A, (VIN-VOUT ) = 3V, CADJ =10µF TA = 25°C, 30ms pulse 10mA ≤IOUT ≤3A, 1.5V≤ (VIN - VOUT) ≤12V 10mA ≤IOUT ≤3A, 1.5V≤ (VIN- VOUT) ≤12V 60 Max Units 1.0 2.0 % % 0.3 0.6 0.1 0.2 6.0 10.0 0.3 0.4 mV mV 1.3 1.5 V 6.0 7.0 A 5 10 mA 5 10 mA 75 0.008 dB 0.04 %W 120 µA µA 5.0 µA 55 0.2 TO-220:Control Circuitry/Power Transistor TO-263:Control Circuitry/Power Transistor % 1.5/4.0 °C/W 1.5/4.0 APPLICATION CIRCUITS VIN Cin 10uF CX1085 IN OUT ADJ VREF VOUT R1 120 Cout 100uF VIN > 9.0V Cin 10uF CX1085 VOUT=7.5V OUT IN 5.0 2.5V Cout 100uF R2 1k Vout =7.5V VOUT = VRE F (1+ R2/R1)+IADJR2 Application 1:1.25V to 10V Adjustable Regulator Application2: Regulator with reference