R1171x SERIES 2.0A/1.5A LDO REGULATOR NO. EA-125-090202 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 (R1171Sxx1A/B) 1.8V to 5.0V (R1171Jxx1C/D) * 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 VDD R1171xxx1B/D VOUT VDD GND Vref GND Vref Current Limit Thermal Shutdown CE VOUT Current Limit Thermal Shutdown GND CE SELECTION GUIDE The output voltage, the chip-enable polarity, the taping type can be selected at the user's request. The selection can be made with the part number as follows; R1171xxx1x-xx-x Part Number a b Code a b c d e 2 c d e Contents Package Type; S: HSOP-6J J: TO-252-5-P1 Designation of Output Voltage (VOUT) Stepwise setting with 0.1V increment in the range from 1.5V to 5.0V (A/B version), from 1.8V to 5.0V (C/D version). Exception; 1.85V Type: R1171x181x5, 2.85V type: R1171x281x5-xx Designation of option; A: Built-in Chip Enable Circuit, Active at "L" (Output Current :Min.1.5A) B: Built-in Chip Enable Circuit, Active at "H" (Output Current :Min.1.5A) C: Built-in Chip Enable Circuit, Active at "L" (Output Current :Min.2.0A) D: Built-in Chip Enable Circuit, Active at "H" (Output Current :Min.2.0A) Designation of Taping Type; E2: HSOP-6J T1: TO-252-5-P1 (Refer to Taping Specifications) Designation of composition of pin plating: -F: Lead free solder plating (HSOP-6J, TO-252-5-P1) GND R1171x PIN CONFIGURATIONS HSOP-6J 6 5 4 2 3 TO-252-5-P1 R 1 1 2 3 4 5 PIN DESCRIPTIONS * * HSOP-6J Pin No. Symbol 1 VOUT 2 GND 3 Description TO-252-5-P1 Pin No. Symbol Output Pin 1 VOUT Ground Pin 2 CE or CE CE or CE Chip Enable Pin 3 GND Ground Pin 4 NC No Connection 4 GND Ground Pin 5 GND Ground Pin 5 VDD 6 VDD Input Pin Description Output Pin Chip Enable Pin Input Pin *) No.3 and No.4 pins must be wired short each other and connected to the GND plane when it is mounted on board. 3 R1171x ABSOLUTE MAXIMUM RATINGS Symbol Item Rating Unit 7.0 V VIN Input Voltage VCE Input Voltage ( CE or CE Input Pin) -0.3 to VIN+0.3 V VOUT Output Voltage -0.3 to VIN+0.3 V IOUT Output Current 3.5 A 1 PD 1700 Power Dissipation (HSOP-6J) 1 Power Dissipation (TO-252-5-P1) mW 1900 Topt Operating Temperature -40 to 85 C Tstg Storage Temperature -55 to 125 C 1) For Power Dissipation, please refer to PACKAGE INFORMATION to be described. ABSOLUTE MAXIMUM RATINGS Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the permanent damages and may degrade the life time and safety for both device and system using the device in the field. The functional operation at or over these absolute maximum ratings is not assured. RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS) All of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating conditions. The semiconductor devices cannot operate normally over the recommended operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. And the semiconductor devices may receive serious damage when they continue to operate over the recommended operating conditions. 4 R1171x ELECTRICAL CHARACTERISTICS * R1171Sxx1A Topt=25C Symbol Item Conditions Min. x0.98 VOUT Output Voltage VIN-VOUT=1.0V, IOUT=200mA IOUT Output Current VIN-VOUT=1.0V Load Regulation VIN-VOUT=1.0V 1mA < = IOUT < = 300mA VOUT/ IOUT VDIF IOUT=300mA Dropout Voltage Typ. Max. Unit x1.02 V 1.5 A 10 60 1.5 < = VOUT<1.6 0.16 0.35 1.6 < = VOUT<1.7 0.14 0.32 1.7 < = VOUT<1.8 0.13 0.28 1.8 < = VOUT<2.0 0.12 0.24 2.0 < = VOUT<2.5 0.10 0.21 2.5 < = VOUT 0.09 0.18 < = 5.0 mV V Supply Current VIN-VOUT =1.0V, VCE=0V 130 320 A Istandby Standby Current VIN-VOUT=1.0V, VIN=VCE 0.1 2.0 A VOUT/VIN Line Regulation IOUT=200mA RR Ripple Rejection f=1kHz, Ripple 0.5Vp-p VIN Input Voltage ISS VOUT/ Topt Ilim 2.1 Output Voltage Temperature Coefficient IOUT=10mA -40C < = Topt Short Current Limit VOUT=0V 85C Pull-up resistance for CE pin 2.5 VCEH CE Input Voltage "H" CE Input Voltage "L" Thermal Shutdown Junction Temperature Detector Threshold Temperature Thermal Shutdown Junction Temperature Released Temperature TTSD TTSR 6.0 1.5 < = VOUT < 1.6 1.6 < = VOUT < = 5.0 ppm/C 200 mA 5.0 10.0 M 1.2 VIN V 0 0.25 V 150 C 120 C Topt=25C Line Regulation VOUT/VIN (%/V) Condition VIN < = 6.0V IOUT=200mA, VOUT+0.5V < = VIN IOUT=200mA, 2.1V < = < = Typ. Max. 0.05 0.30 6.0V Ripple Rejection by Output Voltage Output Voltage VOUT (V) 1.5 < = VOUT < 4.7 4.7 < = VOUT < = 5.0 V 100 Line Regulation by Output Voltage Output Voltage VOUT (V) * < = RPU VCEL * Refer to the following table Topt=25C Ripple Rejection RR (dB) Condition f=1kHz, Ripple 0.5Vp-p, VIN-VOUT=1.0V f=1kHz, Ripple 0.5Vp-p, VIN=5.75V Typ. 50 5 R1171x * R1171Sxx1B Topt=25C Symbol Item Conditions VOUT Reference Voltage for Adjustable Voltage Regulator VIN-VOUT=1.0V IOUT=200mA x0.98 IOUT Output Current VIN-VOUT=1.0V 1.5 Load Regulation VIN-VOUT=1.0V 1mA < = IOUT < = 300mA VOUT/ IOUT VDIF IOUT=300mA Dropout Voltage ISS Istandby TTSR 60 < = VOUT<1.6 0.16 0.35 1.6 < = VOUT<1.7 0.14 0.32 1.7 < = VOUT<1.8 0.13 0.28 1.8 < = VOUT<2.0 0.12 0.24 2.0 < = VOUT<2.5 0.10 0.21 2.5 < = VOUT 0.09 0.18 < = 5.0 mV V VIN-VOUT=1.0V, VCE=0V 0.1 2.0 A IOUT=200mA f=1kHz, Ripple 0.5Vp-p Refer to the following table 2.1 Output Voltage Temperature Coefficient IOUT=10mA -40C < = Topt Short Current Limit Pull-down resistance for CE pin CE Input Voltage "H" VOUT=0V < = 85C 2.5 6.0 1.5 < = VOUT < 1.6 1.6 < = VOUT < = 5.0 ppm/C 200 mA 5.0 10.0 M 1.2 VIN V 0 0.25 V 150 C 120 C Topt=25C Line Regulation VOUT/VIN (%/V) Condition VIN < = 6.0V IOUT=200mA, VOUT+0.5V < = VIN IOUT=200mA, 2.1V < = < = Typ. Max. 0.05 0.30 6.0V Ripple Rejection by Output Voltage 1.5 < = VOUT < 4.7 4.7 < = VOUT < = 5.0 V 100 Line Regulation by Output Voltage Output Voltage VOUT (V) 6 10 Standby Current Output Voltage VOUT (V) * A 1.5 CE Input Voltage "L" Thermal Shutdown Junction Temperature Detector Threshold Temperature Thermal Shutdown Junction Temperature Released Temperature TTSD V A Input Voltage VCEL x1.02 320 VIN VCEH Unit 130 Ripple Rejection RPD Max. VIN-VOUT=1.0V, VCE=VIN RR VOUT/ Topt Ilim Typ. Supply Current VOUT/VIN Line Regulation * Min. Topt=25C Ripple Rejection RR (dB) Condition f=1kHz, Ripple 0.5Vp-p, VIN-VOUT=1.0V f=1kHz, Ripple 0.5Vp-p, VIN=5.75V Typ. 50 R1171x * R1171Jxx1C Topt=25C Symbol Item Min. VOUT Output Voltage VIN-VOUT=1.0V IOUT=200mA x0.98 IOUT Output Current VIN-VOUT=1.0V 2.0 Load Regulation VIN-VOUT=1.0V 1mA < = IOUT < = 300mA VOUT/ IOUT VDIF IOUT=300mA Dropout Voltage ISS Istandby VOUT/ VIN RR VIN Unit x1.02 V A 10 60 mV VOUT<2.0 0.12 0.24 2.0 < = VOUT<2.5 0.10 0.21 2.5 < = 0.09 0.18 VOUT < = 5.0 V Supply Current VIN-VOUT=1.0V, VCE=0V 130 320 A Standby Current VIN-VOUT =1.0V, VIN=VCE 0.1 2.0 A Line Regulation IOUT=200mA VOUT+0.5V < = VIN 0.05 0.30 %/V Ripple Rejection f=1kHz, Ripple 0.5Vp-p < = 6V Refer to the following table 2.1 Output Voltage Temperature Coefficient IOUT=10mA -40C < = Topt Short Current Limit VOUT=0V < = 85C Pull-up resistance for CE pin 2.5 VCEH CE Input Voltage "H" VCEL CE Input Voltage "L" Thermal Shutdown Detector Threshold Temperature Thermal Shutdown Released Temperature TTSR Max. < = RPU TTSD Typ. 1.8 Input Voltage VOUT/ Topt Ilim * Conditions 6.0 100 ppm/C 200 mA 5.0 10.0 M 1.2 VIN V 0 0.25 V Junction Temperature 150 C Junction Temperature 120 C Ripple Rejection by Output Voltage Output Voltage VOUT (V) 1.8 < = 4.7 < = VOUT < 4.7 VOUT < = 5.0 V Topt=25C Ripple Rejection RR (dB) Condition f=1kHz, Ripple 0.5Vp-p, VIN-VOUT=1.0V f=1kHz, Ripple 0.5Vp-p, VIN=5.75V Typ. 50 7 R1171x * R1171Jxx1D Topt=25C Symbol Item VOUT Reference Voltage for Adjustable Voltage Regulator VIN-VOUT=1.0V IOUT=200mA x0.98 IOUT Output Current VIN-VOUT=1.0V 2.0 Load Regulation VIN-VOUT=1.0V 1mA < = IOUT < = 300mA VOUT/ IOUT VDIF ISS Istandby VOUT/ VIN RR VIN VOUT/ Topt Ilim RPD VCEH VCEL TTSD TTSR * Dropout Voltage Min. Typ. Max. Unit x1.02 V A 10 60 mV 1.8 < = VOUT<2.0 0.12 0.24 IOUT=300mA 2.0 < = VOUT<2.5 0.10 0.21 2.5 < = 0.09 0.18 VOUT < = 5.0 V Supply Current VIN-VOUT=1.0V, VCE=VIN 130 320 A Standby Current VIN-VOUT=1.0V, VCE=0V 0.1 2.0 A Line Regulation IOUT=200mA VOUT+0.5V < = VIN 0.05 0.30 %/V Ripple Rejection f=1kHz, Ripple 0.5Vp-p < = 6V Input Voltage Refer to the following table 2.1 Output Voltage Temperature Coefficient IOUT=10mA -40C < = Topt Short Current Limit Pull-down resistance for CE pin CE Input Voltage "H" VOUT=0V < = 85C 2.5 CE Input Voltage "L" Thermal Shutdown Detector Threshold Temperature Thermal Shutdown Released Temperature 6.0 1.8 < = VOUT < 4.7 4.7 < = VOUT < = 5.0 V 100 ppm/C 200 mA 5.0 10.0 M 1.2 VIN V 0 0.25 V Junction Temperature 150 C Junction Temperature 120 C Ripple Rejection by Output Voltage Output Voltage VOUT (V) 8 Conditions Topt=25C Ripple Rejection RR (dB) Condition f=1kHz, Ripple 0.5Vp-p, VIN-VOUT=1.0V f=1kHz, Ripple 0.5Vp-p, VIN=5.75V Typ. 50 R1171x TEST CIRCUITS CE VDD IN CE VOUT R1171xxx1B Series VDD IN OUT IOUT OUT ISS CIN CIN COUT GND Supply Current Test Circuit CE VDD CE VOUT R1171xxx1B Series COUT GND Standard Test Circuit IN VOUT R1171xxx1B Series OUT VDD IN VOUT OUT R1171xxx1B Series IOUT COUT CIN P.G. GND COUT Test Circuit for Ripple Rejection, Input Transient Response GND I1 I2 Test Circuit for Load Transient Response 9 R1171x TYPICAL CHARACTERISTICS 1) Output Voltage vs. Output Current (Topt=25C) R1171S151x R1171S201x 2.5 VIN=2.5V 1.6 1.4 1.2 1.0 VIN=2.0V 0.8 0.6 0.4 VIN=3.5V 0.2 VIN=3.0V Output Voltage VOUT(V) Output Voltage VOUT(V) 1.8 2.0 1.5 VIN=2.5V 1.0 0.5 VIN=4.0V 0 0 0 500 1000 1500 2000 2500 3000 3500 Output Current IOUT(mA) 0 R1171S301x R1171S501x 6 VIN=4.0V 3.0 2.5 2.0 VIN=3.5V 1.5 1.0 0.5 VIN=5.0V VIN=6.0V Output Voltage VOUT(V) Output Voltage VOUT(V) 3.5 0 5 4 VIN=5.5V 3 2 1 0 0 500 1000 1500 2000 2500 3000 3500 Output Current IOUT(mA) 0 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 500 1000 1500 2000 2500 3000 3500 Output Current IOUT(mA) R1171J501x 6 VIN=2.8V VIN=2.3V VIN=3.8V VIN=6.0V Output Voltage VOUT(V) Output Voltage VOUT(V) R1171J181x 5 4 VIN=5.5V 3 2 1 0 0 10 500 1000 1500 2000 2500 3000 3500 Output Current IOUT(mA) 500 1000 1500 2000 2500 3000 3500 Output Current IOUT(mA) 0 500 1000 1500 2000 2500 3000 3500 Output Current IOUT(mA) R1171x 2) Output Voltage vs. Input Voltage (Topt=25C) R1171x151B R1171x201B 2.3 IOUT=1mA IOUT=10mA IOUT=100mA IOUT=300mA IOUT=500mA 1.7 1.6 Output Voltage VOUT(V) Output Voltage VOUT(V) 1.8 1.5 1.4 1.3 1.2 2.2 2.1 2.0 1.9 IOUT=1mA IOUT=10mA IOUT=100mA IOUT=300mA IOUT=500mA 1.8 1.7 1.6 1.5 1 2 3 4 5 Input Voltage VIN(V) 6 1 5.3 3.2 5.2 3.1 3.0 2.9 IOUT=1mA IOUT=10mA IOUT=100mA IOUT=300mA IOUT=500mA 2.8 2.7 2.6 2.5 2 3 4 5 Input Voltage VIN(V) 6 R1171x501B 3.3 Output Voltage VOUT(V) Output Voltage VOUT(V) R1171x301B 2 3 4 5 Input Voltage VIN(V) 5.1 5.0 4.9 4.8 IOUT=1mA IOUT=10mA IOUT=300mA IOUT=500mA 4.7 4.6 4.5 4.0 6 4.5 5.0 5.5 Input Voltage VIN(V) 6.0 3) Dropout Voltage vs. Output Current 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 R1171S201x 25C 85C -40C 0 250 500 750 1000 1250 1500 Output Current IOUT(mA) Dropout Voltage VDIF(V) Dropout Voltage VDIF(V) R1171S151x 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 25C 85C -40C 0 250 500 750 1000 1250 1500 Output Current IOUT(mA) 11 R1171x R1171S501x 25C 85C Dropout Voltage VDIF(V) Dropout Voltage VDIF(V) R1171S301x 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -40C 0 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 250 500 750 1000 1250 1500 Output Current IOUT(mA) 25C 85C -40C 0 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 R1171J201x 25C 85C -40C 0 Dropout Voltage VDIF(V) Dropout Voltage VDIF(V) R1171J181x 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 250 500 750 1000 1250 1500 1750 2000 Output Current IOUT (mA) 25C 85C -40C 0 25C 85C -40C 0 12 250 500 750 1000 1250 1500 1750 2000 Output Current IOUT (mA) R1171J501x 250 500 750 1000 1250 1500 1750 2000 Output Current IOUT (mA) Dropout Voltage VDIF(V) Dropout Voltage VDIF(V) R1171J301x 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 250 500 750 1000 1250 1500 Output Current IOUT(mA) 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 25C 85C -40C 0 250 500 750 1000 1250 1500 1750 2000 Output Current IOUT (mA) R1171x 4) Output Voltage vs. Temperature R1171x151B R1171x201B VIN=2.5V, IOUT=200mA VIN=3.0V, IOUT=200mA 2.10 Output Voltage VOUT(V) Output Voltage VOUT(V) 1.60 1.55 1.50 1.45 1.40 -50 -25 0 25 50 75 Temperature Topt(C) 2.05 2.00 1.95 1.90 -50 100 -25 R1171x301B 5.20 3.15 5.15 Output Voltage VOUT(V) Output Voltage VOUT(V) VIN=5.0V, IOUT=200mA 3.20 3.10 3.05 3.00 2.95 2.90 2.85 -25 100 R1171x501B VIN=4.0V, IOUT=200mA 2.80 -50 0 25 50 75 Temperature Topt(C) 0 25 50 75 Temperature Topt(C) 5.10 5.05 5.00 4.95 4.90 4.85 4.80 -50 100 -25 0 25 50 75 Temperature Topt(C) 100 5) Supply Current vs. Input Voltage (Topt=25C) R1171x201B 350 350 300 300 Supply Current ISS(A) Supply Current ISS(A) R1171x151B 250 200 150 100 50 0 250 200 150 100 50 0 0 1 2 3 4 Input Voltage VIN(V) 5 6 0 1 2 3 4 Input Voltage VIN(V) 5 6 13 R1171x R1171x501B 350 300 300 Supply Current ISS(A) Supply Current ISS(A) R1171x301B 350 250 200 150 100 50 0 250 200 150 100 50 0 0 1 2 3 4 Input Voltage VIN(V) 5 6 0 1 2 3 4 Input Voltage VIN(V) 5 6 6) Supply Current vs. Temperature R1171x151B R1171x201B VIN=3.0V 350 350 300 300 Supply Current ISS(A) Supply Current ISS(A) VIN=2.5V 250 200 150 100 50 0 -50 -25 0 25 50 75 Temperature Topt(C) 250 200 150 100 50 0 -50 100 -25 R1171x301B 350 300 300 Supply Current ISS(A) Supply Current ISS(A) 14 VIN=6.0V 350 250 200 150 100 50 -25 100 R1171x501B VIN=4.0V 0 -50 0 25 50 75 Temperature Topt(C) 0 25 50 75 Temperature Topt(C) 100 250 200 150 100 50 0 -50 -25 0 25 50 75 Temperature Topt(C) 100 R1171x 7) Dropout Voltage vs. Set Output Voltage (Topt=25C) R1171Sxx1x 0.8 IOUT=1500mA IOUT=1000mA IOUT=600mA IOUT=200mA 0.7 0.6 0.5 Dropout Voltage VDIF(V) Dropout Voltage VDIF(V) 0.8 R1171Jxx1x 0.4 0.3 0.2 0.1 0 IOUT=2000mA IOUT=1000mA IOUT=400mA IOUT=200mA 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 1 2 3 4 Set Output Voltage VSET(V) 5 1 2 3 4 Set Output Voltage VSET(V) 5 8) Ripple Rejection vs. Frequency R1171x151B R1171x201B VIN=3.0V+0.5Vp-p 80 80 70 70 Ripple Rejection RR(dB) Ripple Rejection RR(dB) VIN=2.5V+0.5Vp-p 60 50 40 30 20 10 0 0.1 IOUT=1mA IOUT=10mA IOUT=100mA IOUT=200mA IOUT=500mA 1.0 10.0 Ripple Frequency f(kHz) 60 50 40 30 20 10 0 0.1 100.0 R1171x301B 70 70 Ripple Rejection RR(dB) Ripple Rejection RR(dB) 80 60 50 20 10 0 0.1 IOUT=1mA IOUT=10mA IOUT=100mA IOUT=200mA IOUT=500mA 1.0 10.0 Ripple Frequency f(kHz) 100.0 VIN=5.75V+0.5Vp-p 80 30 1.0 10.0 Ripple Frequency f(kHz) R1171x501B VIN=4.0V+0.5Vp-p 40 IOUT=1mA IOUT=10mA IOUT=100mA IOUT=200mA IOUT=500mA 100.0 60 50 40 30 20 10 0 0.1 IOUT=1mA IOUT=10mA IOUT=100mA IOUT=200mA IOUT=500mA 1.0 10.0 Ripple Frequency f(kHz) 100.0 15 R1171x 9) Ripple Rejection vs. Input Voltage R1171x301x R1171x301x IOUT=1mA,COUT=4.7F IOUT=10mA,COUT=4.7F 70 80 f=400Hz Ripple Rejection RR(dB) Ripple Rejection RR(dB) 80 60 50 f=1kHz 40 30 f=10kHz 20 10 0 3.1 3.2 3.3 3.4 Input Voltage VIN(V) 70 60 50 40 30 f=1kHz 40 f=10kHz 20 10 0 3.1 3.2 3.3 3.4 Input Voltage VIN(V) 3.5 R1171x301x IOUT=500mA,COUT=4.7F Ripple Rejection RR(dB) 80 70 60 50 f=1kHz 30 20 0 3.1 16 f=400Hz 40 10 IOUT=300mA,COUT=4.7F f=10kHz 3.2 3.3 3.4 Input Voltage VIN(V) 3.5 Ripple Rejection RR(dB) Ripple Rejection RR(dB) 60 30 3.5 80 f=400Hz 50 3.2 3.3 3.4 Input Voltage VIN(V) R1171x301x IOUT=100mA,COUT=4.7F 70 f=10kHz 10 R1171x301x 80 f=1kHz 20 0 3.1 3.5 f=400Hz 70 60 50 f=400Hz f=1kHz 40 30 f=10kHz 20 10 0 3.1 3.2 3.3 3.4 Input Voltage VIN(V) 3.5 R1171x 10) Input Transient Response (Topt=25C) R1171x151B 4.0 1.75 3.5 1.70 3.0 Input Voltage 1.65 2.5 1.60 2.0 1.55 1.5 Output Voltage 1.50 1.0 1.45 0.5 1.40 Input Voltage VIN(V) Output Voltage VOUT(V) tr=tf=5s, IOUT=1000mA, COUT=Ceramic 10F 1.80 0 0 20 40 60 80 100 120 Time t(s) 140 160 180 200 R1171x201B 4.5 2.25 4.0 2.20 3.5 Input Voltage 2.15 3.0 2.10 2.5 2.05 2.0 Output Voltage 2.00 1.5 1.95 1.0 1.90 0 20 40 60 80 100 120 Time t(s) 140 160 180 Input Voltage VIN(V) Output Voltage VOUT(V) tr=tf=5s, IOUT=1000mA, COUT=Ceramic 4.7F 2.30 0.5 200 R1171x301B tr=tf=5s, IOUT=1000mA, COUT=Ceramic 4.7F 5.5 5.0 3.15 Input Voltage 3.10 4.5 4.0 3.5 3.05 Output Voltage 3.00 3.0 2.5 2.0 2.95 Input Voltage VIN(V) Output Voltage VOUT(V) 3.20 1.5 2.90 0 20 40 60 80 100 120 Time t(s) 140 160 180 1.0 200 17 R1171x R1171x501B 7.5 5.25 7.0 5.20 6.5 Input Voltage 5.15 6.0 5.10 5.5 5.05 5.0 Output Voltage 5.00 4.5 4.95 4.0 4.90 0 20 40 60 80 100 120 Time t(s) 140 160 180 Input Voltage VIN(V) Output Voltage VOUT(V) tr=tf=5s, IOUT=1000mA, COUT=Ceramic 4.7F 5.30 3.5 200 11) Load Transient Response (Topt=25C) R1171x151B 2000 1500 1000 500 0 Output Current Output Voltage 0 20 40 60 80 100 120 Time t(s) 140 160 180 Output Current IOUT(mA) Output Voltage VOUT(V) tr=tf=10s, VIN=2.5V, COUT=Ceramic 10F 1.85 1.80 1.75 1.70 1.65 1.60 1.55 1.50 1.45 1.40 1.35 200 R1171x201B Output Current Output Voltage 0 18 2000 1500 1000 500 0 20 40 60 80 100 120 Time t(s) 140 160 180 200 Output Current IOUT(mA) Output Voltage VOUT(V) tr=tf=10s, VIN=3.0V, COUT=Ceramic 4.7F 2.35 2.30 2.25 2.20 2.15 2.10 2.05 2.00 1.95 1.90 1.85 R1171x R1171x301B 2000 1500 1000 500 0 Output Current Output Voltage 0 20 40 60 80 100 120 Time t(s) 140 160 180 Output Current IOUT(mA) Output Voltage VOUT(V) tr=tf=10s, VIN=4.0V, COUT=Ceramic 4.7F 3.35 3.30 3.25 3.20 3.15 3.10 3.05 3.00 2.95 2.90 2.85 200 R1171x501B Output Current 2000 1500 1000 500 0 Output Voltage 0 20 40 60 80 100 120 Time t(s) 140 160 180 Output Current IOUT(mA) Output Voltage VOUT(V) tr=tf=10s, VIN=6.0V, COUT=Ceramic 4.7F 5.35 5.30 5.25 5.20 5.15 5.10 5.05 5.00 4.95 4.90 4.85 200 19 R1171x Technical Notes on External Components and Typical Application 1. Phase Compensation In these ICs, phase compensation is made with the output capacitor for securing stable operation even if the load current is varied. For this purpose, use a capacitor with the capacitance range from 4.7F to 10.0F, as CL. In case that using a tantalum capacitor and the ESR of the tantalum capacitor is too large, unstable operation may result. Fully evaluation is necessary for the whole circuit with considering the frequency characteristic. 2. Mounting on PCB Make VDD and GND lines sufficient. If their impedance is high, large current may flow and the pick-up noise or unstable operation may result. Therefore use a capacitor with a capacitance range from 4.7F to 10.0F between VDD pin and GND pin as close as possible. Further, set an output capacitor between VOUT pin and GND pin for phase compensation as close as possible. (Refer to the example of typical application) CE VDD IN VOUT OUT R1171xxx1B CL CI GND R1171Sxx1B Typical Application 1.5V 1.8V < = < = VOUT<1.8V : CI=10F (Ceramic),CL=10F (Ceramic) VOUT < = 5.0V : CI=4.7F (Ceramic),CL=4.7F (Ceramic) 3. Output Short Protection Function In the R1171x Series, the output short protection function is built in, further, if the output is short to the GND or other voltage line, the chip inside is heating, as a result, in case that the junction temperature becomes equal or more than 150C (Typ.), the built-in thermal shutdown circuit works. If the junction temperature becomes equal or more than 150C (Typ.), the IC is protected by the output short protection circuit and the thermal shutdown circuit. 20 R1171x ESR vs. Output Current (Topt=25C, V =Set Output Voltage+1V, CIN=Ceramic 10F) IN CE VOUT R1171xxx1B COUT S.A Spectrum Analyzer VIN GND VIN CIN ESR IOUT As an output capacitor for this IC, Ceramic capacitor is recommendable. However, other low ESR type capacitor can be used with this IC. For your reference, noise level is tested with the circuit as shown above, and if the noise level is 40V or less than 40V, the ESR values are plotted as stable area. Upper limit is described in the next four graphs, or ESR vs. Output Current. (Hatched area is the stable area.) R1171S151x R1171S151x CIN=COUT=Ceramic 4.7F 100 100 10 10 ESR() ESR() CIN=COUT=Ceramic 10F 1 0.1 1 0.1 0.01 0.01 0 250 500 750 1000 1250 1500 Output Current IOUT(mA) 0 250 500 750 1000 1250 1500 Output Current IOUT(mA) 21 R1171x R1171S301x R1171S301x CIN=COUT=Ceramic 2.2F 100 100 10 10 ESR() ESR() CIN=COUT=Ceramic 4.7F 1 0.1 1 0.1 0.01 0.01 0 250 500 750 1000 1250 1500 Output Current IOUT(mA) 0 R1171S501x R1171S501x CIN=COUT=Ceramic 2.2F 100 100 10 10 ESR() ESR() CIN=COUT=Ceramic 4.7F 1 1 0.1 0.1 0.01 0.01 0 0 250 500 750 1000 1250 1500 Output Current IOUT(mA) R1171J181x 100 10 10 ESR() ESR() CIN=COUT=Ceramic 2.2F 100 1 0.1 250 500 750 1000 1250 1500 Output Current IOUT(mA) R1171J181x CIN=COUT=Ceramic 4.7F 1 0.1 0.01 0.01 0 22 250 500 750 1000 1250 1500 Output Current IOUT(mA) 250 500 750 1000 1250 1500 1750 2000 Output Current IOUT(mA) 0 250 500 750 1000 1250 1500 1750 2000 Output Current IOUT(mA) R1171x R1171J301x R1171J301x CIN=COUT=Ceramic 2.2F 100 10 10 ESR() ESR() CIN=COUT=Ceramic 4.7F 100 1 0.1 1 0.1 0.01 0.01 0 250 500 750 1000 1250 1500 1750 2000 Output Current IOUT(mA) 0 R1171J501x R1171J501x CIN=COUT=Ceramic 2.2F 100 10 10 ESR() ESR() CIN=COUT=Ceramic 4.7F 100 1 0.1 250 500 750 1000 1250 1500 1750 2000 Output Current IOUT(mA) 1 0.1 0.01 0.01 0 250 500 750 1000 1250 1500 1750 2000 Output Current IOUT(mA) 0 250 500 750 1000 1250 1500 1750 2000 Output Current IOUT(mA) 23