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| '2001.5.7 SC82 120mA LDO REGULATOR R1141Q SERIES s OUTLINE The R1141Q Series are voltage regulator ICs with high output voltage accuracy, low supply current, low ON-resistance, and high ripple rejection by CMOS process. Each of these voltage regulator ICs consists of a voltage reference unit, an error amplifier, resistors for setting Output Voltage, a current limit circuit, and a chip enable circuit. Output Current Limit circuit is embedded in the R1141Q Series to prevent the break down of the IC caused by excess current. Chip enable circuit realizes standby mode and makes consumption current extremely small. These ICs perform with low dropout voltage and a chip enable function. The line transient response and load transient response of the R1141Q Series are excellent, thus these ICs are very suitable for the power supply for hand-held communication equipment. The output voltage of these ICs is internally fixed with high accuracy. Since the package for these ICs is SC-82AB (Super Mini-mold) package, high density mounting of the ICs on boards is possible. s FEATURES Ultra-Low Supply Current......................................... TYP. 90A Standby Mode ........................................................... TYP. 0.1A Low Dropout Voltage ................................................ TYP. 0.15V(IOUT=100mA Output Voltage=3.0V Type) High Ripple Rejection ............................................... TYP. 75dB(VOUT2.4V),70dB(VOUT2.5V) (f=1kHz) Low Temperature-Drift Coefficient of Output Voltage TYP. 100ppm/C Excellent Line Regulation ......................................... TYP. 0.05%/V High Output Voltage Accuracy.................................. 1.5% or 30mV(VOUT2.0V) Excellent Dynamic Response Small Package ..........................................................SC-82AB(Super Mini-mold) Output Voltage...........................................................Stepwise setting with a step of 0.1V in the range of 1.5V to 4.0V is possible Built-in chip enable circuit (B/D: active high) Built-in fold-back protection circuit ..........................TYP. 40mA (Current at short mode) Ceramic capacitor can be used for Output pin..........Recommended value is 2.2F or more. s APPLICATIONS Power source for cellular phones such as GSM, CDMA and various kinds of PCS. Power source for electrical appliances such as cameras, VCRs, camcorders, and hand-held communication equipment. Power source for battery-powered equipment. Very stable Voltage Reference Rev. 1.10 -1- s BLOCK DIAGRAM R1141QXX1B R1141QXX1D VOUT 4 VDD Vref Current Limit 1 + GND 4 VDD Vref Current Limit 1 + GND VOUT CE 3 2 CE 3 2 s SELECTION GUIDE The output voltage, mask option, and the taping type for the ICs can be selected at the user's request. The selection can be made with designating the part number as shown below; R1141QXX1X-XX Part Number abcd Code a b c d Contents Designation of Package Type : Q:SC82-AB (Super Mini-mold) Setting Output Voltage (VOUT) : Stepwise setting with a step of 0.1V in the range of 1.5V to 4.0V is possible. Designation of Mask Option : B: Without auto discharge function at OFF state. D: With auto discharge function at OFF state. Designation of Taping Type : Ex. TR, TL (refer to Taping Specifications; TR type is the standard direction.) Rev. 1.10 -2- s PIN CONFIGURATION SC-82AB 4 3 Mark side 1 2 s PIN DESCRIPTION Pin No. 1 2 3 4 Symbol VOUT GND CE VDD Description Output pin Ground Pin Chip Enable Pin Input Pin s ABSOLUTE MAXIMUM RATINGS Item Input Voltage Input Voltage(CE Pin) Output Voltage Output Current Power Dissipation Operating Temperature Range Storage Temperature Range Symbol VIN VCE VOUT IOUT PD Topt Tstg Rating 6.5 -0.3 ~ VIN+0.3 -0.3 ~ VIN+0.3 140 150 -40 ~ 85 -55 ~ 125 Unit V V V mA mW C C Rev. 1.10 -3- s ELECTRICAL CHARACTERISTICS q R1141QXX1B/R1141QXX1D Symbol Item VOUT IOUT VOUT/IOUT VDIF ISS Istandby VOUT/VIN Output Voltage Output Current Load Regulation Dropout Voltage Supply Current Supply Current (Standby) Line Regulation Conditions VIN = Set VOUT+1V 1mA IOUT 30mA(Note 1) MIN. VOUT x0.985 (-30mV) 120 TYP. MAX. VOUT x1.015 (+30mV) Topt=25C Unit V RR Ripple Rejection Input Voltage Output Voltage VOUT/T Temperature Coefficient Ilim Short Current Limit RPU CE Pull-up Resistance VCEH CE Input Voltage "H" VCEL CE Input Voltage "L" en Output Noise Low Output Nch Tr. ON VCE=0V RLOW Resistance (of D version) Note 1: 30mV Tolerance at VOUT2.0V Note 2:70dB at VOUT2.5V q ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE VIN VIN - VOUT = 1.0V mA VIN = Set VOUT+1V 12 40 mV 1mA IOUT 120mA Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE VIN = Set VOUT+1V 90 160 A VIN = VCE = Set VOUT+1V 0.1 1.0 A Set VOUT+0.5V VIN 6V IOUT = 30mA 0.05 0.10 %/V (In case that VOUT1.6V, 2.2V VIN 6V) f = 1kHz, Ripple 0.5Vp-p VIN = Set VOUT+1V, 75 IOUT = 30mA dB (70) (Note 2) (In case that VOUT1.7V, VIN -VOUT =1.2V) 2.2 6.0 V ppm IOUT = 30mA 100 /C -40C Topt 85C VOUT = 0V 40 mA 0.7 2.0 8.0 M 1.5 VIN V 0.0 0.3 V BW=10Hz to 100kHz 30 Vrms 60 Topt = 25C Output Voltage VOUT (V) VOUT = 1.5 VOUT = 1.6 VOUT = 1.7 1.8 VOUT 2.0 2.1 VOUT 2.7 2.8 VOUT 4.0 Dropout Voltage VDIF (V) Condition TYP. 0.36 0.32 0.30 IOUT = 120mA 0.28 0.24 0.18 MAX. 0.70 0.60 0.50 0.40 0.35 0.28 Rev. 1.10 -4- s TECHNICAL NOTES When using these ICs, consider the following points: Phase Compensation In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this purpose, be sure to use a 2.2F or more capacitor COUT with good frequency characteristics and ESR (Equivalent Series Resistance). (Note: When the additional ceramic capacitors are connected to the Output Pin with Output capacitor for phase compensation, the operation might be unstable. Because of this, test these ICs with as same external components as ones to be used on the PCB.) PCB Layout Make VDD and GND line sufficient. When the impedance of these is high, it would be a cause of picking up the noise or unstable operation. Connect a capacitor with as much as 1.0F capacitor between VDD and GND pin as close as possible. Set external components, especially output capacitor as close as possible to the ICs and make wiring shortest. s TEST CIRCUITS 1 V OUT I OUT V OUT V C2 V DD R1141Q SERIES 4 2 GND CE 3 C1 * C1 = Ceramic 1.0F C2 = Ceramic 2.2F Fig.1 Standard test Circuit 1 VOUT C2 V DD R1141Q SERIES CE 4 A 3 C1 I SS 2 GND * C1 = Ceramic1.0F C2 = Ceramic 2.2F Fig.2 Supply Current Test Circuit Rev. 1.10 -5- 1 V OUT I OUT C2 V DD 4 Pulse CE 3 Generator R1141Q SERIES 2 GND PG Fig.3 Ripple Rejection, Line Transient Response Test Circuit 1 I I OUTa OUTb V DD V OUT R1141Q SERIES CE 4 C2 2 GND 3 C1 * C1 = Ceramic 1.0F C2 = Ceramic 2.2F Fig.4 Load Transient Response Test Circuit s TYPICAL APPLICATION OUT C2 1 VOUT VDD R1141Q SERIES 4 IN 2 GND CE 3 C1 (External Components) Output Capacitor; Ceramic Type C1=1F C2=2.2F Rev. 1.10 -6- s TYPICAL CHARACTERISTICS 1) Output Voltage vs. Output Current R1141Q151X 1.6 1.4 Output VoltageVout[V] 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 50 100 150 200 Output Current Iout[mA] 250 300 0.0 0 50 100 150 200 Output Current Iout[mA] 250 300 R1141Q201X 3.5V 2.5 2.0V 2.5V Output Voltage Vout[V] 3.0V 2.0 VIN=1.8V 2.5V VIN=2.3V 1.5 1.0 4.0V 0.5 R1141Q281X 3.0 2.5 Output VoltageVout[V] 2.0 1.5 1.0 0.5 0.5 0.0 0 50 100 150 200 Output Current Iout[mA] 250 300 0.0 0 50 R1141Q401X 3.3V 3.8V Output Voltage Vout[V] 4.5 4.0 4.5V VIN=4.3V 6.0V 5.0V VIN=3.1V 4.8V 3.5 3.0 2.5 2.0 1.5 1.0 100 150 200 Output Current Iout[mA] 250 300 2) Output Voltage vs. Input Voltage R1141Q151X 1.6 1.5 2.2 2.0 Output Voltage Vout[V] 1.8 1.6 1.4 1.2 1.0 1 2 3 4 Input Voltage Vin[V] 5 6 1 2 R1141Q201X Output Voltage Vout[V] 1.4 1.3 1.2 1.1 1.0 Iout=-1mA Iout=-30mA Iout=-50mA Iout=-1mA Iout=-30mA Iout=-50mA 3 4 5 6 Input Voltage Vin[V] Rev. 1.10 -7- R1141Q281X 2.9 2.8 4.0 Output Voltage Vout[V] 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1 2 3 4 5 6 Input Voltage Vin[V] Iout=-1mA Iout=-30mA Iout=-50mA Output Voltage Vout[V] 3.8 3.6 3.4 3.2 3.0 1 2 4.2 R1141Q401X Iout=-1mA Iout=-30mA Iout=-50mA 3 4 Input Voltage Vin[V] 5 6 3) Dropout Voltage vs. Output Current R1141Q151X 1.2 0.4 R1141Q201X 1.0 Dropout Voltage Vdif.[V] 85 Dropout Voltage Vdif.[V] 25 0.3 -40 85 25 -40 0.8 0.6 0.2 0.4 0.1 0.2 0.0 0 20 40 60 80 Output Current Iout[mA] 100 120 0 20 40 60 80 Output Current Iout[mA] 100 120 0.0 R1141Q281X 0.25 85 25 -40 0.15 Dropout Voltage Vdif.[V] 0.20 0.18 Dropout Voltage Vdif.[V] 0.20 0.16 0.14 0.12 0.10 0.08 0.06 0.04 0.02 0.00 0 20 40 60 80 Output Current Iout[mA] 100 120 0.00 0 20 R1141Q401X 85 25 -40 0.10 0.05 40 60 80 Output Current Iout[mA] 100 120 Rev. 1.10 -8- 4) Output Voltage vs. Temperature R1141Q151X VIN=2.5V, IOUT=30mA 1.54 1.53 2.02 2.04 R1141Q201X VIN=3.0V, IOUT=30mA Output Voltage VOUT[V] 1.51 1.50 1.49 1.48 1.47 1.46 -50 -25 0 25 50 Temperature Topt (C) 75 100 Output Voltage VOUT[V] 1.52 2.00 1.98 1.96 1.94 -50 -25 0 25 50 Temperature Topt (C) 75 100 R1141Q281X VIN=3.8V, IOUT=30mA 2.86 4.08 4.06 2.84 Output Voltage VOUT[V] Output Voltage VOUT[V] 4.04 4.02 4.00 3.98 3.96 3.94 3.92 -50 -25 0 25 50 Temperature Topt (C) 75 100 -50 -25 R1141Q401X VIN=5.0V, IOUT=30mA 2.82 2.80 2.78 2.76 2.74 0 25 50 75 100 Temperature Topt (C) 5) Supply Current vs. Input Voltage (Topt=25C) R1141Q151X 100 90 80 100 90 80 Supply Current ISS[uA] 70 60 50 40 30 20 10 0 0 1 2 3 4 Input Voltage Vin[V] 5 6 0 1 R1141Q201X Supply Current ISS[uA] 70 60 50 40 30 20 10 0 2 3 4 Input Voltage Vin[V] 5 6 Rev. 1.10 -9- R1141Q281X 100 90 80 Supply Current ISS[uA] Supply Current ISS[uA] 70 60 50 40 30 20 10 0 0 1 2 3 4 Input Voltage Vin[V] 5 6 100 90 80 70 60 50 40 30 20 10 0 0 1 R1141Q401X 2 3 4 Input Voltage Vin[V] 5 6 6) Supply Current vs. Temperature R1141Q151X VIN=2.5V 120 120 110 Supply Current ISS[uA] 100 90 80 70 60 -50 0 50 Temperature Topt (C) 100 -50 R1141Q201X VIN=3.0V 110 Supply Current ISS[uA] 100 90 80 70 60 0 50 100 Temperature Topt (C) R1141Q281X VIN=3.8V 120 110 Supply Current ISS[uA] 100 90 80 70 60 -50 0 50 Temperature Topt(C) 100 Supply Current ISS[uA] 120 110 100 90 80 70 60 -50 R1141Q401X VIN=5.0V 0 50 Temperature Topt (C) 100 Rev. 1.10 - 10 - 7) Dropout Voltage vs. Set Output Voltage 1.0 0.9 0.8 Dropout Voltage Vdif[V] 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 1.0 2.0 3.0 Set Output Voltage Vreg[V] 4.0 10mA 30mA 50mA 120mA 8) Ripple Rejection vs. Frequency R1141Q151X VIN=2.5V+0.5Vp-p, CIN = none, COUT = Ceramic 2.2F 90 80 Ripple Rejection RR [dB] 70 60 50 40 30 20 10 0 0.1 1 10 Frequency f (kHz) 100 R1141Q281X VIN=3.8V+0.5Vp-p, CIN = none, COUT = Ceramic 2.2F 90 80 Ripple Rejection RR [dB] 70 60 50 40 30 20 10 0 0.1 1 10 Frequency f (kHz) 100 R1141Q401X VIN=5.0V+0.5Vp-p, CIN = none, COUT = Ceramic 2.2F 90 80 70 Ripple Rejection RR [dB] 60 50 40 30 20 10 0 0.1 1 10 Frequency f (kHz) 100 Rev. 1.10 - 11 - 9) Ripple Rejection vs. Input Bias R1141Q281X IOUT=1mA, CIN = none, COUT = Ceramic 2.2F 100 90 Ripple Rejection RR [dB] Ripple Rejection RR [dB] 80 70 60 50 40 30 20 10 0 2.8 2.9 3 3.1 Input Voltage VIN(V) 3.2 3.3 1kHz 10kHz 100kHz R1141Q281X IOUT=30mA, CIN = none, COUT = Ceramic 2.2F 100 90 80 70 60 50 40 30 20 10 0 2.8 2.9 3 3.1 Input Voltage VIN(V) 3.2 3.3 1kHz 10kHz 100kHz R1141Q281X IOUT=50mA, CIN = none, COUT = Ceramic 2.2F 100 90 Ripple Rejection RR [dB] 80 70 60 50 40 30 20 10 0 2.8 2.9 3 3.1 Input Voltage VIN(V) 3.2 3.3 1kHz 10kHz 100kHz 10) Input Transient Response R1141Q281X VIN=3.8V to 4.8V, IOUT=30mA, COUT = Ceramic 1.0F, Tr=Tf=5.0s 2.83 6 Input Voltage 2.82 Output Voltage Vout[V] 2.81 2.80 5 Input Voltage Vin[V] 4 3 Output Voltage 2.79 2.78 2.77 -20 -10 0 10 20 30 Time t[us] 40 50 60 70 80 2 1 0 Rev. 1.10 - 12 - R1141Q281X VIN=3.8V to 4.8V, IOUT=30mA, COUT = Ceramic 2.2F, Tr=Tf=5.0s 2.83 2.82 Output Voltage Vout[V] 2.81 2.80 2.79 2.78 2.77 -20 -10 0 10 20 30 Time t[us] 40 50 60 70 80 6 5 Input Voltage Vin[V] Input Voltage 4 3 2 Output Voltage 1 0 R1141Q281X VIN=3.8V to 4.8V, IOUT=30mA, COUT = Ceramic 4.7F, Tr=Tf=5.0s 2.83 2.82 Output Voltage Vout[V] 2.81 2.80 2.79 2.78 2.77 -20 -10 0 10 20 30 Time t[us] 40 50 60 70 80 6 5 Input Voltage Vin[V] Input Voltage 4 3 2 Output Voltage 1 0 11) Load Transient Response R1141Q281X VIN=3.8V, IOUT=50mA 100mA, CIN = Ceramic 1.0F COUT = Ceramic 1.0F, Tr=Tf=5.0s 3.00 2.95 Output Voltage Vout[V] 2.90 2.85 2.80 2.75 2.70 14 16 18 20 22 24 Time t[us] 26 28 30 32 34 150 100 Output Current Iout[mA] Output Current 50 0 -50 -100 -150 Output Voltage Rev. 1.10 - 13 - R1141Q281X VIN=3.8V, IOUT=50mA100mA, CIN = Ceramic 1.0F COUT = Ceramic 2.2F, Tr=Tf=5.0s 3.00 2.95 Output Voltage Vout[V] 150 100 Output Current Iout[mA] Output Current 2.90 2.85 50 0 Output Voltage 2.80 2.75 2.70 14 16 18 20 22 24 Time t[us] 26 28 30 32 34 -50 -100 -150 R1141Q281X VIN=3.8V, IOUT=50mA100mA, CIN = Ceramic 1.0F COUT = Ceramic 4.7F, Tr=Tf=5.0s 3.00 2.95 Output Voltage Vout[V] 2.90 150 100 Output Current Iout[mA] Output Current 50 2.85 0 Output Voltage 2.80 2.75 -50 -100 2.70 14 16 18 20 22 24 Time t[us] 26 28 30 32 34 -150 Rev. 1.10 - 14 - s TECHNICAL NOTES When using these ICs, consider the following points: In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this purpose, be sure to use a capacitor COUT with good frequency characteristics and ESR (Equivalent Series Resistance) of which is in the range described as follows: The relations between IOUT (Output Current) and ESR of Output Capacitor are shown below. The conditions when the white noise level is under 40V(Avg.) are marked as the hatched area in the graph. 100 100 R1141Q281X f=10Hz to 2MHz,CIN = Ceramic1.0F, COUT = Ceramic2.2F 10 ESR (Ohm) ESR (Ohm) 10 1 1 0.1 0.1 0.01 0 30 60 Output Current IOUT(mA) 90 120 0.01 0 30 60 Output Current IOUT(mA) 90 120 Rev. 1.10 - 15 - |
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