R1122N SERIES LOW NOISE 150mA LDO REGULATOR NO.EA-060-111027 OUTLINE The R1122N Series are CMOS-based voltage regulator ICs with high output voltage accuracy, extremely low supply current, low ON-resistance, and high Ripple Rejection. Each of these voltage regulator ICs consists of a voltage reference unit, an error amplifier, resistors, a current limit circuit, and a chip enable circuit. These ICs perform with low dropout voltage and a chip enable function. The line transient response and load transient response of the R1122N 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 fixed with high accuracy. Since the package for these ICs is SOT-23-5 (Mini-mold) package , high density mounting of the ICs on boards is possible. FEATURES * * * * * * * * * * * * * Supply Current ................................................................ Typ. 100A Standby Mode Current .................................................. Typ. 0.1A Dropout Voltage .............................................................. Typ. 0.19V (IOUT=100mA 3.0V Output type) Ripple Rejection.............................................................. Typ. 80dB(f=1kHz) Temperature-Drift Coefficient of Output Voltage ............. Typ. 100ppm/C Line Regulation ............................................................... Typ. 0.05%/V Output Voltage Accuracy................................................. 2.0% Output Voltage Range..................................................... 1.5V to 5.0V (0.1V steps) (For other voltages, please refer to MARK INFORMATIONS.) Package ........................................................................ SOT-23-5 (Mini-mold) Built-in chip enable circuit ( 2 types; A: active "Low", B: active "High") Built-in fold-back protection circuit .................................. Short Current Typ.30mA Pin-out............................................................................. Similar to the TK112,TK111 Ceramic Capacitors Recommended to be used with this IC APPLICATIONS * Power source for cellular phones such as GSM, CDMA, PCS and so forth. * Power source for domestic appliances such as cameras, VCRs and camcorders. * Power source for battery-powered equipment. 1 R1122N BLOCK DIAGRAM R1122Nxx1A R1122Nxx1B 3 3 1 VOUT VDD VOUT _ _ + + Vref Vref GND Current Limit CE 1 VDD 2 4 GND Current Limit CE 2 4 SELECTION GUIDE The output voltage, the active type for the ICs can be selected at the user's request. Product Name R1122Nxx1-TR-FE Package Quantity per Reel Pb Free Halogen Free SOT-23-5 3,000 pcs Yes Yes 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.) : Designation of Active Type. (A) "L" active (B) "H" active 2 R1122N PIN CONFIGURATION SOT-23-5 5 4 (mark side) 1 2 3 PIN DESCRIPTION Pin No Symbol Description 1 VOUT Output pin 2 GND Ground Pin 3 VDD 4 CE or CE Chip Enable Pin 5 NC No Connection Input Pin ABSOLUTE MAXIMUM RATINGS Symbol Item Rating Unit 7.0 V VIN Input Voltage VCE Input Voltage( CE or CE Pin) -0.3 ~ VIN+0.3 V VOUT Output Voltage -0.3 ~ VIN+0.3 V IOUT Output Current 200 mA PD Power Dissipation (SOT-23-5) 420 mW Topt Operating Temperature Range -40 ~ 85 C Tstg Storage Temperature Range -55 ~ 125 C ) For Power Dissipation, please refer to PACKAGE INFORMATION. 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. 3 R1122N ELECTRICAL CHARACTERISTICS * R1122Nxx1A Symbol Topt=25C Item Conditions Min. Typ. Max. Unit VOUT x1.02 V VOUT Output Voltage VIN = Set VOUT + 1V 1mA < = IOUT < = 30mA IOUT Output Current VIN = Set VOUT + 1V When VOUT = Set VOUT -0.1V VOUT/IOUT Load Regulation VIN = Set VOUT + 1V 1mA < = IOUT < = 80mA VDIF Dropout Voltage ISS Supply Current VIN = Set VOUT + 1V 100 170 A Supply Current (Standby) VIN = VCE = Set VOUT + 1V 0.1 1.0 A VOUT/VIN Line Regulation Set VOUT+0.5V < = VIN < = 6.0V IOUT = 30mA 0.05 0.20 %/V RR Ripple Rejection f = 1kHz, Ripple 0.5Vp-p VIN = Set VOUT + 1V VIN Input Voltage Istandby VOUT/ Topt VOUT x0.98 150 12 80 2.0 IOUT = 30mA -40C < = Topt < = 85C ISC Short Current Limit VOUT = 0V RPU CE Pull-up Resistance 2.5 VCEH CE Input Voltage "H" VCEL CE Input Voltage "L" Output Noise 40 mV Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE Output Voltage Temperature Coefficient en mA BW=10Hz to 100kHz dB 6.0 V 100 ppm/C 30 mA 5.0 10.0 M 1.5 VIN V 0.00 0.25 V 30 Vrms 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 R1122N * R1122Nxx1B Symbol Topt=25C Item Conditions VOUT Output Voltage VIN = Set VOUT + 1V 1mA < = IOUT < = 30mA IOUT Output Current VIN = Set VOUT + 1V When VOUT = Set VOUT -0.1V VOUT/IOUT Load Regulation VIN = Set VOUT + 1V 1mA < = IOUT < = 80mA VDIF Dropout Voltage ISS Supply Current Istandby Supply Current (Standby) VOUT/VIN Line Regulation RR Ripple Rejection VIN Input Voltage VOUT/ Topt Min. Unit VOUT x1.02 V mA 12 40 mV Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE VIN = Set VOUT + 1V VIN = Set VOUT + 1V VCE =GND Set VOUT + 0.5V < = VIN < = 6.0V IOUT = 30mA f = 1kHz, Ripple 0.5Vp-p VIN = Set VOUT + 1V 100 170 A 0.1 1.0 A 0.05 0.20 %/V 80 2.0 IOUT = 30mA -40C < = Topt < = 85C ISC Short Current Limit VOUT = 0V RPD CE Pull-down Resistance 2.5 VCEH CE Input Voltage "H" VCEL CE Input Voltage "L" Output Noise Max. 150 Output Voltage Temperature Coefficient en Typ. VOUT x0.98 BW=10Hz to 100kHz dB 6.0 V 100 ppm/C 30 mA 10.0 M 1.5 VIN V 0.00 0.25 V 5.0 30 Vrms 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. 5 R1122N ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE Topt = 25C Output Voltage VOUT (V) 1.5 1.7 1.9 2.4 2.8 < = < = < = < = < = VOUT VOUT VOUT VOUT VOUT < = < = < = < = < = 1.6 1.8 2.3 2.7 5.0 Dropout Voltage VDIF (V) Condition Typ. 0.32 0.28 IOUT = 100mA 0.25 0.20 0.19 Max. 0.55 0.47 0.35 0.29 0.26 OPERATION R1122Nxx1A 3 R1122Nxx1B 1 VDD 3 VOUT 1 VDD VOUT _ _ + + R1 Vref Vref Current Limit CE 4 R1 R2 2 GND Current Limit CE 4 R2 GND 2 In these ICs, fluctuation of the output voltage, VOUT is detected by feed-back registers R1, R2, and the result is compared with a reference voltage by the error amplifier, so that a constant voltage is output. A current limit circuit for protection at short mode, and a chip enable circuit, are included. 6 R1122N TEST CIRCUITS CE CE 4 IN VDD 3 4 VOUT R1122Nxx1B Series IN OUT VDD 3 1 IOUT VOUT R1122Nxx1B Series ISS 2 2 GND 2.2F GND 2.2F Fig.1 Standard test Circuit Fig.2 Supply Current Test Circuit CE CE 4 4 IN VDD 3 VOUT R1122Nxx1B Series OUT 1 IN VDD 3 VOUT R1122Nxx1B Series OUT 1 IOUT IOUT P.G OUT 1 2 2 GND Fig.3 Ripple Rejection, Line Transient Response Test Circuit 2.2F GND I1 I2 Fig.4 Load Transient Response Test Circuit 7 R1122N 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 capacitor COUT with good frequency characteristics and ESR (Equivalent Series Resistance). (Note: When the additional ceramic capacitors are connected to the output pin with the output capacitor for phase compensation, the operation might be unstable. Because of this, test these ICs with the same external components as the ones to be used on the PCB.) Recommended Capacitors ; GRM40X5R225K6.3 (Murata) GRM40-034X5R335K6.3 (Murata) GRM40-034X5R475K6.3 (Murata) PCB Layout Make VDD and GND lines sufficient. If their impedance is high, picking up the noise or unstable operation may result. Connect a capacitor with a capacitance of 2.2F or more 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 as short as possible. TYPICAL APPLICATION CE CE IN VDD R1122Nxx1A Series + Cap. VOUT OUT + GND Cap. IN VDD R1122Nxx1B Series VOUT + Cap. + GND (External Components) Output Capacitor ; Ceramic 2.2F (Set output voltage in the range from 2.5 to 5.0V) Ceramic 4.7F (Set output voltage in the range from 1.5 to 2.5V) Input Capacitor ; Ceramic 2.2F 8 OUT Cap. R1122N TYPICAL CHARACTERISTICS 1) Output Voltage vs. Output Current R1122N151B R1122N201B 2.5 1.8 Output Voltage VOUT(V) Output Voltage VOUT(V) 1.6 1.4 VIN=2.0V VIN=2.5V VIN=3.5V 1.2 1 0.8 0.6 0.4 2 VIN=2.3V 1.5 VIN=2.5V VIN=3.0V VIN=4.0V 1 0.5 0.2 0 0 0 100 200 300 400 0 500 R1122N301B 200 300 400 500 R1122N401B 3.5 5 3 Output Voltage VOUT(V) Output Voltage VOUT(V) 100 Output Current IOUT(mA) Output Current IOUT(mA) 2.5 VIN=3.3V 2 VIN=3.5V VIN=4.0V 1.5 VIN=5.0V 1 0.5 0 4 VIN=4.3V 3 VIN=4.5V VIN=5.0V VIN=6.0V 2 1 0 0 100 200 300 400 500 Output Current IOUT(mA) 0 100 200 300 400 500 Output Current IOUT(mA) R1122N501B Output Voltage VOUT(V) 6 5 4 VIN=5.3V VIN=5.5V 3 VIN=6.0V VIN=7.0V 2 1 0 0 100 200 300 400 500 Output Current IOUT(mA) 9 R1122N 2) Output Voltage vs. Input Voltage R1122N201B 2.100 1.500 2.000 Output Voltage VOUT(V) Output Voltage VOUT(V) R1122N151B 1.600 1.400 1.300 1.200 IOUT=1mA IOUT=30mA IOUT=50mA 1.100 1.000 1.900 1.800 1.700 IOUT=1mA IOUT=30mA IOUT=50mA 1.600 1.500 1 2 3 4 5 6 7 1 2 3 Input Voltage VIN(V) R1122N301B 3.000 Output Voltage VOUT(V) Output Voltage VOUT(V) 6 7 4.500 2.900 2.800 2.700 IOUT=1mA IOUT=30mA IOUT=50mA 2.600 2.500 4.000 3.500 3.000 IOUT=1mA IOUT=30mA IOUT=50mA 2.500 2 3 4 5 6 7 Input Voltage VIN(V) R1122N501B 5.000 4.500 4.000 3.500 IOUT=1mA IOUT=30mA IOUT=50mA 3.000 2.500 2 3 4 5 Input Voltage VIN(V) 2 3 4 5 Input Voltage VIN(V) 5.500 Output Voltage VOUT(V) 5 R1122N401B 3.100 10 4 Input Voltage VIN(V) 6 7 6 7 R1122N 3) Dropout Voltage vs. Output Current R1122N151B R1122N201B 0.600 0.500 Topt=-40C Topt=25C Topt=85C 0.400 Dropout Voltage VDIF(V) Dropout Voltage VDIF(V) 0.600 0.300 0.200 0.100 0.000 0.500 Topt=-40C Topt=25C Topt=85C 0.400 0.300 0.200 0.100 0.000 0 50 100 150 0 Output Current IOUT(mA) R1122N301B 100 150 R1122N401B 0.600 0.600 0.500 Topt=-40C Topt=25C Topt=85C 0.400 Dropout Voltage VDIF(V) Dropout Voltage VDIF(V) 50 Output Current IOUT(mA) 0.300 0.200 0.100 0.000 0.500 Topt=-40C Topt=25C Topt=85C 0.400 0.300 0.200 0.100 0.000 0 50 100 150 Output Current IOUT(mA) 0 50 100 150 Output Current IOUT(mA) R1122N501B Dropout Voltage VDIF(V) 0.600 0.500 Topt=-40C Topt=25C Topt=85C 0.400 0.300 0.200 0.100 0.000 0 50 100 150 Output Current IOUT(mA) 11 R1122N 4) Output Voltage vs. Temperature R1122N151A/B R1122N201A/B VIN=2.5V CIN=1F COUT=2.2F IOUT=30mA VIN=3.0V CIN=1F COUT=2.2F IOUT=30mA 1.53 2.10 Output VoltageVOUT(V) Output VoltageVOUT(V) 2.08 1.52 1.51 1.50 1.49 1.48 2.06 2.04 2.02 2.00 1.98 1.96 1.94 1.92 1.47 1.90 -50 -25 0 25 50 Temperature Topt (C) 75 100 -50 R1122N301A/B 100 4.08 4.06 3.04 Output VoltageVOUT(V) Output VoltageVOUT(V) 75 VIN=5.0V CIN=1F COUT=2.2F IOUT=30mA 3.06 3.02 3.00 2.98 2.96 4.04 4.02 4.00 3.98 3.96 3.94 3.92 2.94 -50 -25 0 25 50 Temperature Topt (C) 75 100 R1122N501A/B VIN=6.0V CIN=1F COUT=2.2F IOUT=30mA 5.10 5.08 Output VoltageVOUT(V) 0 25 50 Temperature Topt (C) R1122N401A/B VIN=4.0V CIN=1F COUT=2.2F IOUT=30mA 5.06 5.04 5.02 5.00 4.98 4.96 4.94 4.92 4.90 -50 12 -25 -25 0 25 50 Temperature Topt (C) 75 100 -50 -25 0 25 50 Temperature Topt (C) 75 100 R1122N 5) Supply Current vs. Input Voltage R1122N151B R1122N201B 120 Supply Current ISS (A) Supply Current ISS (A) 120 100 80 60 40 20 100 80 60 40 20 0 0 1 2 3 4 5 Input Voltage VIN (V) 6 1 7 2 R1122N301B 6 7 6 7 R1122N401B 120 Supply Current ISS (A) 120 Supply Current ISS (A) 3 4 5 Input Voltage VIN (V) 100 80 60 40 20 100 80 60 40 20 0 0 1 2 3 4 5 Input Voltage VIN (V) 6 7 6 7 1 2 3 4 5 Input Voltage VIN (V) R1122N501B Supply Current ISS (A) 120 100 80 60 40 20 0 1 2 3 4 5 Input Voltage VIN (V) 13 R1122N 6) Supply Current vs. Temperature R1122N151A/B 150 100 50 0 -50 -25 50 75 0 25 Temperature Topt (C) VIN=3.0V CIN=1F COUT=2.2F 200 Supply Current ISS (A) 200 Supply Current ISS (A) R1122N201A/B VIN=2.5V CIN=1F COUT=2.2F 150 100 50 0 -50 100 -25 R1122N301A/B 100 50 -25 50 75 0 25 Temperature Topt (C) 100 R1122N501A/B VIN=6.0V CIN=1F COUT=2.2F Supply Current ISS (A) 200 150 100 50 0 -50 14 -25 0 25 50 75 Temperature Topt (C) 100 VIN=5.0V CIN=1F COUT=2.2F 200 Supply Current ISS (A) Supply Current ISS (A) 150 0 -50 100 R1122N401A/B VIN=4.0V CIN=1F COUT=2.2F 200 50 75 0 25 Temperature Topt (C) 150 100 50 0 -50 -25 50 75 0 25 Temperature Topt (C) 100 R1122N 7) Ripple Rejection vs. Frequency R1122N151A/B 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 0.1 90.00 Ripple Rejection RR (dB) Ripple Rejection RR (dB) 90.00 R1122N201A/B VIN=2.5V+0.5Vp-p COUT=2.2F IOUT=30mA 10 1 Frequency Freq (kHz) 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 0.1 100 R1122N301A/B 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 0.1 10 1 Frequency Freq (kHz) 10 1 Frequency Freq (kHz) 100 R1122N401A/B VIN=4.0V+0.5Vp-p COUT=2.2F IOUT=30mA 90.00 Ripple Rejection RR (dB) Ripple Rejection RR (dB) 90.00 VIN=3.0V+0.5Vp-p COUT=2.2F IOUT=30mA 100 VIN=5.0V+0.5Vp-p COUT=2.2F IOUT=30mA 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 0.1 10 1 Frequency Freq (kHz) 100 R1122N501A/B Ripple Rejection RR (dB) 90.00 VIN=6.0V+0.5Vp-p COUT=2.2F IOUT=30mA 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 0.1 10 1 Frequency Freq (kHz) 100 15 R1122N 8) Ripple Rejection vs. Input Voltage (DC bias) R1122N301B 80.00 70.00 60.00 50.00 40.00 30.00 f=400Hz f=1kHz f=10kHz 20.00 10.00 0.00 3.10 3.50 3.20 3.30 3.40 Input Voltage VIN (V) 90.00 Ripple Rejection RR (dB) 90.00 Ripple Rejection RR (dB) R1122N301B COUT=Ceramic 2.2F IOUT=1mA COUT=Ceramic 2.2F IOUT=10mA 80.00 70.00 60.00 50.00 40.00 30.00 20.00 10.00 0.00 3.10 f=400Hz f=1kHz f=10kHz 3.20 3.30 3.40 Input Voltage VIN (V) 3.50 R1122N301B COUT=Ceramic 2.2F IOUT=50mA Ripple Rejection RR (dB) 90.00 80.00 70.00 60.00 50.00 40.00 30.00 f=400Hz f=1kHz f=10kHz 20.00 10.00 0.00 3.10 3.20 3.30 3.40 Input Voltage VIN (V) 3.50 9) Input Transient Response R1122N501B Topt=25C Tek Run : 2.50MS/s Average VIN 1 2 VOUT Ch1 Ch1 16 VIN=2.5V3.5V IOUT=30mA CIN=none COUT=2.2F tr/tf=5s 1.00V Ch2 20.0mV M20.0s R1122N R1122N201B Topt=25C Tek Run : 2.50MS/s Average VIN 1 2 VIN=3.0V4.0V IOUT=30mA CIN=none COUT=2.2F tr/tf=5s VOUT Ch1 1.00V Ch2 20.0mV M20.0s R1122N301B Topt=25C Tek Run : 2.50MS/s Average VIN 1 2 VIN=4.0V5.0V IOUT=30mA CIN=none COUT=2.2F tr/tf=5s VOUT Ch1 1.00V Ch2 20.0mV M20.0s R1122N401B Topt=25C Tek Run : 2.50MS/s Average VIN 1 2 VIN=5.0V6.0V IOUT=30mA CIN=none COUT=2.2F tr/tf=5s VOUT Ch1 1.00V Ch2 20.0mV M20.0s 17 R1122N R1122N501B Topt=25C Tek Run : 2.50MS/s Average VIN 1 2 VIN=6.0V7.0V IOUT=30mA CIN=none COUT=2.2F tr/tf=5s VOUT Ch1 1.00V Ch2 20.0mV M20.0s 10) Load Transient Response R1122N151B Topt=25C Tek Run : 2.50MS/s Average 1 IOUT IOUT=50mA100mA VIN=2.5V CIN=2.2F COUT=2.2F tr/tf=5s VOUT 2 Ch1 500mV Ch2 50.0mV M20.0s R1122N201B Topt=25C Tek Run : 2.50MS/s Average 1 IOUT IOUT=50mA100mA VIN=3.0V CIN=2.2F COUT=2.2F tr/tf=5s VOUT 2 Ch1 500mV 18 Ch2 50.0mV M20.0s R1122N R1122N301B Topt=25C Tek Run : 2.50MS/s Average 1 IOUT IOUT=50mA100mA VIN=4.0V CIN=2.2F COUT=2.2F tr/tf=5s VOUT 2 Ch1 500mV Ch2 50.0mV M20.0s R1122N401B Topt=25C Tek Run : 2.50MS/s Average 1 IOUT IOUT=50mA100mA VIN=5.0V CIN=2.2F COUT=2.2F tr/tf=5s VOUT 2 Ch1 500mV Ch2 50.0mV M20.0s R1122N501B Topt=25C Tek Run : 2.50MS/s Average 1 IOUT IOUT=50mA100mA VIN=6.0V CIN=2.2F COUT=2.2F tr/tf=5s VOUT 2 Ch1 500mV Ch2 50.0mV M20.0s 19 R1122N TECHNICAL NOTES 4 CE VOUT1 1 R1122Nxx1B VIN Ceramic Cap. Spectrum Analyzer 3 VDD GND Ceramic Cap. S.A ESR 2 IOUT Measuring Circuit for white noise; R1122N301B The relationship between IOUT (output current) and ESR of the output capacitor is shown in the graphs below. The conditions when the white noise level is under 40V (Avg.) are indicated by the hatched area in the graph. (Note: When additional ceramic capacitors are connected to the output pin with the output capacitor for phase compensation, operation might be unstable. Because of this, test these ICs with the same external components as the ones to be used on the PCB.) (1)VIN=VOUT+1V (2)Frequency band: 10Hz to 1MHz (3)Temperature: 25C 20 1. The products and the product specifications described in this document are subject to change or discontinuation of production without notice for reasons such as improvement. Therefore, before deciding to use the products, please refer to Ricoh sales representatives for the latest information thereon. 2. 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