R1171x SERIES 2.0A/1.5A LDO REGULATOR NO. EA-125-111027 OUTLINE The R1171x Series are CMOS-based positive voltage regulator ICs. The R1171x Series have features of low dropout voltage, high output voltage accuracy, low consumption current. Each of these ICs consists of a voltage reference unit, an error amplifier, resistor net for setting output voltage, a current limit circuit at short mode, a chip enable circuit, and thermal shutdown circuit. The output voltage of R1171 is fixed in the IC. Low consumption current by the merit of CMOS process and built-in transistors with low ON-resistance make low dropout voltage and chip enable function prolongs the battery life. These regulators are remarkable improvement on the current regulators in terms of input transient response, and load transient response. Thus, the R1171x Series are suitable for various power sources. Since the packages for these ICs are high wattage HSOP-6J package, TO-252-5-P1, high density mounting of the ICs on boards is possible. FEATURES Supply Current ............................................................. Typ. 130A Standby Current ........................................................... Typ. 0.1A Output Current ............................................................. Min. 1.5A (VIN=VOUT+1.0V, R1171Sxx1A/B) Min. 2.0A (VIN=VOUT+1.0V, R1171Jxx1C/D) Input Voltage................................................................ 2.1V to 6.0V Output Voltage.............................................................1.5V to 5.0V (0.1V steps) (R1171Sxx1A/B) 1.8V to 5.0V (0.1V steps) (R1171Jxx1C/D) (For other voltages, please refer to MARK INFORMATIONS.) Output Voltage Accuracy.............................................. 2.0% Dropout Voltage ........................................................... Typ. 0.09V (VOUT=3.0V, IOUT=300mA) Temperature-drift Coefficient of Output Voltage........... Typ. 100ppm/C Line Regulation ............................................................ Typ. 0.05%/V Packages.....................................................................HSOP-6J, TO-252-5-P1 Built-in Current Limit Circuit Built-in Thermal Shutdown Circuit Ceramic capacitor for phase compensation ................ CIN=COUT=Ceramic 10F (VOUT<1.8V) > CIN=COUT=Ceramic 4.7F (VOUT 1.8V) = APPLICATIONS Local Power source for Notebook PC. Local Power source for portable appliances, cameras, and videos. Local Power source for equipment of battery-use. Local Power source for home appliances. 1 R1171x BLOCK DIAGRAMS R1171xxx1A/C R1171xxx1B/D VDD VDD VOUT VOUT GND GND Vref Vref Current Limit Current Limit Thermal Shutdown Thermal Shutdown CE CE GND GND SELECTION GUIDE The output voltage, chip enable polarity, package for the ICs can be selected at the users request. Product Name Package Quantity per Reel Pb Free Halogen Free R1171Sxx1-E2-FE HSOP-6J 1,000 pcs Yes Yes R1171Jyy1 -T1-F TO-252-5-P1 3,000 pcs Yes No xx : The output voltage can be designated in the range from 1.5V(15) to 5.0V(50) in 0.1V steps. (For other voltages, please refer to MARK INFORMATIONS.) yy : The output voltage can be designated in the range from 1.8V(18) to 5.0V(50) in 0.1V steps. (For other voltages, please refer to MARK INFORMATIONS.) : CE pin polarity are options as follows. (A) active (B) active : CE pin polarity are options as follows. (C) active (D) active 2