ELM92301B-N

ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter ■General description ELM92xxxx is CMOS PWM step-up DC/DC converter which consists of reference voltage source, error amplifier, oscillation circuit, start-up circuit, output voltage setting resistor, LX transistor and switching current limiter. For external parts, coil, diode and capacitor are possible choices; with external parts, ELM92 series is able to acquire constant output voltage higher than input voltage. The standard output voltages are 2.7V, 3.0V, 3.3V, and 5.0V; ELM92 series can also be designed as semi-custom IC within the range of 2.5V to 5.5V by 0.1V step. Meanwhile, 600kHz high frequency PWM control scheme makes it easy to design DC/DC converter which can generate large output current with high stability and small ripples by only using small external inductor. With newly developed intermittent operation control scheme, ELM92 series is able to work with high efficiency under wide range of load conditions. ■Features • • • • • • • • Output voltage range Low voltage operation Oscillating frequency Output current(e.g.) CE(Chip-enable pin) available High efficiency Switching current limiter Package : 2.5V to 5.5V (by 0.1V) : Vin≥0.9V : Typ.600kHz : 250mA (When Vin=1.5V, Vout=3.0V) : Max. 0.5μA (ELM92xx2x Iss at Shutdown) : Typ. 85% : SOT-89, SOT-89-5, SON-6 ■Application • Constant voltage source for battery-operated devices • Constant voltage source for PDAs, cameras, portable communications equipments and videos • Local regulator ■Maximum absolute ratings Parameter Apply voltage to LX pin Apply voltage to VOUT pin Apply voltage to CE pin Power dissipation Operating temperature Storage temperature Symbol Vlx Vout Vce Pd Top Tstg Limit Vss-0.3 to 8.0 Vss-0.3 to 8.0 Vss-0.3 to 8.0 300 (SOT-89) 500 (SOT-89-5) 500 (SON-6) -40 to +85 -55 to +125 Unit V V V mW °C °C 15 - 1 ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter ■Selection guide ELM92xxxx-x Symbol e.g. : 27: Vout=2.7V 30: Vout=3.0V 33: Vout=3.3V 50: Vout=5.0V 1: No CE type (SOT-89, SON-6) 2: CE type (SOT-89-5, SON-6) B: SOT-89, SOT-89-5 C: SON-6 S : Refer to PKG file N : Refer to PKG file a, b Output voltage c CE selection ELM92 x x x x - x ↑↑↑↑ ↑ abcd e d e Package Taping direction ■Pin configuration SOT-89 (TOP VIEW) SOT-89-5 (TOP VIEW) SON-6 (TOP VIEW) Pin No. 1 2 3 Pin name VOUT VSS LX Pin No. 1 2 3 4 5 Pin name VOUT VSS LX NC CE ("H"=active, "L"=shutdown) Pin No. 1 2 3 4 5 6 Pin name VOUT VSS LX NC NC ELM92xx1C:NC ELM92xx2C:CE ("H"=active, "L"=shutdown) 15 - 2 ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter ■Standard circuit • ELM92xx1x • ELM92xx2x ■Block diagram ■Electrical characteristics (ELM92xx1x) Vout=2.7V (ELM92271x) Parameter Input voltage Starting voltage Output voltage1 Output voltage2 Current consumption1 Current consumption2 Oscillating frequency Duty ratio Frequency of intermittent control On-resistance of LX switch Leakage current of LX switch L=2.2μH, Cout=47μF, D=MA735, Vss=0V, Top=25°C Symbol Condition Min. Typ. Max. Unit Note Vin 7 V Vst No-load 0.9 V 1 Vout1 Iout=60mA, Vin=1.5V 2.633 2.700 2.767 V 1 Vout1 Vout1 Vout1 Vout2 Iout=0.1mA, Vin=1.5V V 1 ×1.005 ×1.010 ×1.020 Iss1 Vout=Vout(T)×0.95 280 450 μA 2 Iss2 Vout=Vout(T)+ 0.5V 70 110 μA 2 Fosc Vout=Vout(T)×0.95 510 600 690 kHz 3 Duty Vout=Vout(T)×0.95 80 88 95 % 3 Fimt Ron Ilxl Vout=Vout(T)×0.95 Vout=Vlx=7V 12 270 17 370 1 kHz mΩ μA 3 4 5 : input voltage to VOUT pin * Vout * Vout(T) : typical value of Vout1 * Remarks : test circuit No 15 - 3 ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter Vout=3.0V (ELM92301x) Parameter Input voltage Starting voltage Output voltage1 Output voltage2 Current consumption1 Current consumption2 Oscillating frequency Duty ratio Frequency of intermittent control On-resistance of LX switch Leakage current of LX switch L=2.2μH, Cout=47μF, D=MA735, Vss=0V, Top=25°C Symbol Condition Min. Typ. Max. Unit Note Vin 7 V Vst No-load 0.9 V 1 Vout1 Iout=60mA, Vin=1.5V 2.925 3.000 3.075 V 1 Vout1 Vout1 Vout1 Vout2 Iout=0.1mA, Vin=1.5V V 1 ×1.005 ×1.010 ×1.020 Iss1 Vout=Vout(T)×0.95 300 480 μA 2 Iss2 Vout=Vout(T)+0.5V 75 120 μA 2 Fosc Vout=Vout(T)×0.95 510 600 690 kHz 3 Duty Vout=Vout(T)×0.95 80 88 95 % 3 Fimt Ron Ilxl Vout=Vout(T)×0.95 Vout=Vlx=7V 12 250 17 340 1 kHz mΩ μA 3 4 5 : input voltage to VOUT pin * Vout * Vout(T) : typical value of Vout1 * Remarks : test circuit No Vout=3.3V (ELM92331x) Parameter Input voltage Starting voltage Output voltage1 Output voltage2 Current consumption1 Current consumption2 Oscillating frequency Duty ratio Frequency of intermittent control On-resistance of LX switch Leakage current of LX switch L=2.2μH, Cout=47μF, D=MA735, Vss=0V, Top=25°C Symbol Condition Min. Typ. Max. Unit Note Vin 7 V Vst No-load 0.9 V 1 Vout1 Iout=60mA, Vin=1.5V 3.218 3.300 3.382 V 1 Vout1 Vout1 Vout1 Vout2 Iout=0.1mA, Vin=1.5V V 1 ×1.005 ×1.010 ×1.020 Iss1 Vout=Vout(T)×0.95 320 510 μA 2 Iss2 Vout=Vout(T)+0.5V 80 130 μA 2 Fosc Vout=Vout(T)×0.95 510 600 690 kHz 3 Duty Vout=Vout(T)×0.95 80 88 95 % 3 Fimt Ron Ilxl Vout=Vout(T)×0.95 Vout=Vlx=7V 12 245 17 330 1 kHz mΩ μA 3 4 5 : input voltage to VOUT pin * Vout * Vout(T) : typical value of Vout1 * Remarks : test circuit No 15 - 4 ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter Vout=5.0V (ELM92501x) Parameter Input voltage Starting voltage Output voltage1 Output voltage2 Current consumption1 Current consumption2 Oscillating frequency Duty ratio Frequency of intermittent control On-resistance of LX switch Leakage current of LX switch L=2.2μH, Cout=47μF, D=MA735, Vss=0V, Top=25°C Symbol Condition Min. Typ. Max. Unit Note Vin 7 V Vst No-load 0.9 V 1 Vout1 Iout=60mA, Vin=3V 4.875 5.000 5.125 V 1 Vout1 Vout1 Vout1 Vout2 Iout=0.1mA, Vin=3V V 1 ×1.005 ×1.010 ×1.020 Iss1 Vout=Vout(T)×0.95 550 880 μA 2 Iss2 Vout=Vout(T)+0.5V 90 145 μA 2 Fosc Vout=Vout(T)×0.95 510 600 690 kHz 3 Duty Vout=Vout(T)×0.95 80 88 95 % 3 Fimt Ron Ilxl Vout=Vout(T)×0.95 Vout=Vlx=7V 12 220 17 300 1 kHz mΩ μA 3 4 5 : input voltage to VOUT pin * Vout * Vout(T) : typical value of Vout1 * Remarks : test circuit No ■Electrical characteristics (ELM92xx2x) Vout=2.7V (ELM92272x) Parameter Input voltage Starting voltage Output voltage1 Output voltage2 Current consumption1 Current consumption2 Current consumption in Shutdown Oscillating frequency Duty ratio Frequency of Intermittent control On-resistance of LX switch Leakage current of LX switch CE Input voltage "H" CE Input voltage "L" CE Input current "H" CE Input current "L" * Vout : input voltage to VOUT pin * Vce : input voltage to CE pin Vce=Vout, L=2.2μH, Cout=47μF, D=MA735, Vss=0V, Top=25°C Symbol Condition Min. Typ. Max. Unit Note Vin 7 V Vst No-load 0.9 V 1 Vout1 Iout=60mA, Vin=1.5V 2.633 2.700 2.767 V 1 Vout1 Vout1 Vout1 Vout2 Iout=0.1mA, Vin=1.5V V 1 ×1.005 ×1.010 ×1.020 Iss1 Vout=Vout(T)×0.95 280 450 μA 2 Iss2 Vout=Vout(T)+0.5V 70 110 μA 2 Isd Vout=Vout(T)×0.95, Vce=0 510 80 600 88 12 270 0.8 0.25 0.1 -0.1 0.5 690 95 17 370 1 μA kHz % kHz mΩ μA V V μA μA 2 3 3 3 4 5 6 6 6 6 Fosc Vout=Vout(T)×0.95 Duty Vout=Vout(T)×0.95 Fimt Ron Vout=Vout(T)×0.95 Ilxl Vout=Vlx=7V Vceh Vcel Vout=Vout(T)×0.95, Iceh Vce=Vout(T)×0.95 Icel Vout=Vout(T)×0.95, Vce=0 * Vout(T) : typical value of Vout1 * Remarks : test circuit No 15 - 5 ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter Vout=3.0V (ELM92302x) Parameter Input voltage Starting voltage Output voltage1 Output voltage2 Current consumption1 Current consumption2 Current consumption in Shutdown Oscillating frequency Duty ratio Frequency of Intermittent control On-resistance of LX switch Leakage current of LX switch CE Input voltage "H" CE Input voltage "L" CE Input current "H" CE Input current "L" * Vout : input voltage to VOUT pin * Vce : input voltage to CE pin Vce=Vout, L=2.2μH, Cout=47μF, D=MA735, Vss=0V, Top=25°C Symbol Condition Min. Typ. Max. Unit Note Vin 7 V Vst No-load 0.9 V 1 Vout1 Iout=60mA, Vin=1.5V 2.925 3.000 3.075 V 1 Vout1 Vout1 Vout1 Vout2 Iout=0.1mA, Vin=1.5V V 1 ×1.005 ×1.010 ×1.020 Iss1 Vout=Vout(T)×0.95 300 480 μA 2 Iss2 Vout=Vout(T)+0.5V 75 120 μA 2 Isd Vout=Vout(T)×0.95, Vce=0 510 80 600 88 12 250 0.8 0.25 0.1 -0.1 0.5 690 95 17 340 1 μA kHz % kHz mΩ μA V V μA μA 2 3 3 3 4 5 6 6 6 6 Fosc Vout=Vout(T)×0.95 Duty Vout=Vout(T)×0.95 Fimt Ron Vout=Vout(T)×0.95 Ilxl Vout=Vlx=7V Vceh Vcel Vout=Vout(T)×0.95, Iceh Vce=Vout(T)×0.95 Icel Vout=Vout(T)×0.95, Vce=0 * Vout(T) : typical value of Vout1 * Remarks : test circuit No Vout=3.3V (ELM92332x) Parameter Input voltage Starting voltage Output voltage1 Output voltage2 Current consumption1 Current consumption2 Current consumption in Shutdown Oscillating frequency Duty ratio Frequency of Intermittent control On-resistance of LX switch Leakage current of LX switch CE Input voltage "H" CE Input voltage "L" CE Input current "H" CE Input current "L" * Vout : input voltage to VOUT pin * Vce : input voltage to CE pin Vce=Vout, L=2.2μH, Cout=47μF, D=MA735, Vss=0V, Top=25°C Symbol Condition Min. Typ. Max. Unit Note Vin 7 V Vst No-load 0.9 V 1 Vout1 Iout=60mA, Vin=1.5V 3.218 3.300 3.382 V 1 Vout1 Vout1 Vout1 Vout2 Iout=0.1mA, Vin=1.5V V 1 ×1.005 ×1.010 ×1.020 Iss1 Vout=Vout(T)×0.95 320 510 μA 2 Iss2 Vout=Vout(T)+0.5V 80 130 μA 2 Isd Vout=Vout(T)×0.95, Vce=0 510 80 600 88 12 245 0.8 0.25 0.1 -0.1 0.5 690 95 17 330 1 μA kHz % kHz mΩ μA V V μA μA 2 3 3 3 4 5 6 6 6 6 Fosc Vout=Vout(T)×0.95 Duty Vout=Vout(T)×0.95 Fimt Ron Vout=Vout(T)×0.95 Ilxl Vout=Vlx=7V Vceh Vcel Vout=Vout(T)×0.95, Iceh Vce=Vout(T)×0.95 Icel Vout=Vout(T)×0.95, Vce=0 * Vout(T) : typical value of Vout1 * Remarks : test circuit No 15 - 6 ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter Vout=5.0V (ELM92502x) Parameter Input voltage Starting voltage Output voltage1 Output voltage2 Current consumption1 Current consumption2 Current consumption in Shutdown Oscillating frequency Duty ratio Frequency of Intermittent control On-resistance of LX switch Leakage current of LX switch CE Input voltage "H" CE Input voltage "L" CE Input current "H" CE Input current "L" * Vout : input voltage to VOUT pin * Vce : input voltage to CE pin Vce=Vout, L=2.2μH, Cout=47μF, D=MA735, Vss=0V, Top=25°C Symbol Condition Min. Typ. Max. Unit Note Vin 7 V Vst No-load 0.9 V 1 Vout1 Iout=60mA, Vin=3V 4.875 5.000 5.125 V 1 Vout1 Vout1 Vout1 Vout2 Iout=0.1mA, Vin=3V V 1 ×1.005 ×1.010 ×1.020 Iss1 Vout=Vout(T)×0.95 550 880 μA 2 Iss2 Vout=Vout(T)+0.5V 90 145 μA 2 Isd Vout=Vout(T)×0.95, Vce=0 510 80 600 88 12 220 0.8 0.25 0.1 -0.1 0.5 690 95 17 300 1 μA kHz % kHz mΩ μA V V μA μA 2 3 3 3 4 5 6 6 6 6 Fosc Vout=Vout(T)×0.95 Duty Vout=Vout(T)×0.95 Fimt Ron Vout=Vout(T)×0.95 Ilxl Vout=Vlx=7V Vceh Vcel Vout=Vout(T)×0.95, Iceh Vce=Vout(T)×0.95 Icel Vout=Vout(T)×0.95, Vce=0 * Vout(T) : typical value of Vout1 * Remarks : test circuit No ■Test circuits 1. Vout1, Vout2, Vst 2. Iss1, Iss2, Isd 3. Fosc, Duty, Fimt (LX pin) * Fosc, Duty : Vin=Vout(T)×0.95 * Fimt : Vin=Vout1(1.005 to 1.020) 15 - 7 ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter 4. RON * Vlx=3V, R=30Ω R • Von * Ron= Vlx-Von Ω 5. Ilxl 6. Vceh, Vcel, Iceh, Icel Remarks) CE pin : ELM92xx2x series ■External parts To design DC/DC converters using ELM92 series, coil, diode, and capacitor are necessary. (Refer to the standard circuit configuration.) 1) Coil When choosing choke coil, please select that whose core is not magnetically saturated, DC resistance is low, and which has sufficient margin for rated current. ELM recommends to use inductance around 2.2μH. It is possible that output voltage ripple form may reach over 10mV when using high industance. If ripple can be ingored, it is possible to acquire high efficiency with high industance. The examples using 4.7μH are shown as follows. 15 - 8 ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter ELM9230xx EFFICIENCY - Iout 100 90 2.4V 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1000 Vin=0.9V 1.8V 1.5V 1.1V 100 90 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1000 Vin=1.8V ELM9250xx EFFICIENCY - Iout 3.6V 3.0V 2.4V Iout (mA) EFFICIENCY (%) EFFICIENCY (%) Iout (mA) * CR43/CD43/CR54/CD54 : Sumida Electric Co., Ltd are recommended. 2) Diode When choosing diode, please select that whose forward voltage is small, switching speed is high and which has sufficient margin for rated current. ELM recommends diode which is around 1A class. 3) Capacitor * Cout When choosing capacitor, please select that which is generally used for smoothing power supply circuit, with comparatively large capacity and whose rated voltage is at least three times larger than rated output voltage of used ELM92 series. ELM recommends capacitor which is 47μF to 220μF. When Vin is high (Vin>Vout×0.7), it is possible that large ripple of Iout may happen because of intermittent operation; ELM recommends to use larger capacitor under such circumstance. Cin * Using Cin in the circuit can lower feedback noise to Input; this method is also effective in improving efficiency because input voltage drop during switching can be eased. To gain this effect, please connect tantalum capacitor of 47μF to 220μF to coil as close as possible. 4) Remedies for noise This DC/DC converter may cause electromagnetic noise due to switching of coil under large current. Solution is necessary especially when the IC is used in wireless devices. To reduce noise, this IC is designed in consideration of coil switching characteristics. The following methods are also effective to reduce noise. • Use shield-type, or magnetic shield coil. • Locate coil and diode to the LX terminal of IC as close as possible. • Select ground wire as thick and short as possible. • Connect ground wire of circuit to one point. 15 - 9 ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter ■Marking SOT-89 • SOT-89 package : ELM92xx1B • SOT-89-5 package : ELM92xx2B (with CE) a : Assembly lot No. B to Z (I, O, X excepted) b : Assembly lot No. A to Z (I, O, X excepted) c : the integer digit of the output voltage SOP-89-5 Mark 2 3 Vout 2.*V 3.*V Vout *.0V *.1V *.2V *.3V *.4V Mark 4 5 Vout 4.*V 5.*V Vout *.5V *.6V *.7V *.8V *.9V d : the decimal digit of the output voltage Mark 0 1 2 3 4 Mark 5 6 7 8 9 SON-6 • SON-6 package : ELM92xx1C ELM92xx2C (with CE) a : the integer digit of the output voltage Mark 2 3 Vout 2.*V 3.*V Mark 4 5 Vout 4.*V 5.*V b : the decimal digit of the output voltage Mark 0 1 2 3 4 Vout *.0V *.1V *.2V *.3V *.4V Mark 5 6 7 8 9 Vout *.5V *.6V *.7V *.8V *.9V c : Assembly lot No. A to Z (I, O, X excepted) : ELM92xx1C 0 to 9 : ELM92xx2C (with CE) d : Assembly lot No. 0 to 9 : ELM92xx1C A to Z (I, O, X excepted) : ELM92xx2C (with CE) 15 - 10 ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter ■Typical characteristics • Vout=2.7V (ELM9227xx) (L=2.2μH, Cout=47μF, D=MA735, Top=25°C) Vout - Vin 3.5 3 3 2.9 1.1V 1.5V 1.8V 2.8 Vout - Iout Vout (V) 2.5 2 1.5 1 0 Iout=150mA 60mA 10mA Vout (V) 2 2.7 Vin=0.9V 2.6 2.5 2.4 0.1 1 1 10 100 1000 Vin (V) Iout (mA) EFFICIENCY - Iout 100 90 80 70 60 50 40 30 20 10 0 0.1 1 10 100 1000 2.6 -20 -10 0 1.1V Vin=0.9V 1.8V 1.5V 2.8 Vout1 - Top Vin=1.5V, Iout=60mA EFFICIENCY (%) 2.75 Vout1(V) 2.7 2.65 10 20 30 40 50 60 70 Iout (mA) Top(°C) Vst - Iout 2 Load-Transient Response 200 s /div 1.5 Vst (V) 1 -20°C +70°C Vout, 50mV/div Iout 100mA 100 A 0.5 +25°C 0 0.1 1 10 100 Iout (mA) 15 - 11 ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter • Vout=3.0V (ELM9230xx) (L=2.2μH, Cout=47μF, D=MA735, Top=25°C) Vout - Vin 3.5 3 Vout - Iout 3.3 3.2 1.1V 3.1 1.5V 1.8V 2.4V Vout (V) 2.5 Iout=150mA 2 1.5 1 0 Vout (V) 3 2.9 2.8 2.7 0.1 Vin=0.9V 60mA 10mA 1 2 3 1 10 100 1000 Vin (V) Iout(mA) EFFICIENCY - Iout 100 90 80 Vout1 - Top 3.1 2.4V 1.8V 3.05 Vin=1.5V, Iout=60mA EFFICIENCY (%) 70 60 50 40 30 20 10 0 0.1 1 1.1V Vout1(V) Vin=0.9V 1.5V 3 2.95 10 100 1000 2.9 -20 -10 0 10 20 30 40 50 60 70 Iout (mA) Top(°C) Vst - Iout 2 Load-Transient Response 200 s /div 1.5 Vst (V) -20°C 1 Vout, 50mV/div +70°C 0.5 Iout 100mA 100 A +25°C 0 0.1 1 10 100 Iout (mA) 15 - 12 ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter • Vout=3.3V (ELM9233xx) (L=2.2μH, Cout=47μF, D=MA735, Top=25°C) Vout - Vin 4 3.5 Vout - Iout 3.6 3.5 1.1V 1.5V 1.8V 3.4 Vout (V) 3 Vout (V) 2.4V Iout=150mA 2.5 3.3 Vin=0.9V 3.2 3.1 3 0.1 60mA 2 1.5 0 10mA 1 2 3 1 10 100 1000 Vin (V) Iout (mA) EFFICIENCY - Iout 100 90 3.4 Vout1 - Top Vin=1.5V, Iout=60mA 2.4V 1.8V 1.5V Vin=0.9V 1.1V 3.35 EFFICIENCY (%) 80 70 60 50 40 30 20 10 0 0.1 1 10 100 Vout1(V) 3.3 3.25 1000 3.2 -20 -10 0 10 20 30 40 50 60 70 Iout (mA) Top(°C) Vst - Iout 2 Load-Transient Response 200 s /div 1.5 Vst (V) -20°C 1 Vout, 50mV/div +70°C 0.5 Iout 100mA 100 A +25°C 0 0.1 1 10 100 Iout (mA) 15 - 13 ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter • Vout=5.0V (ELM9250xx) (L=2.2μH, Cout=47μF, D=MA735, Top=25°C) Vout - Vin 5.5 5 Vout - Iout 5.5 5.4 5.3 5.2 5.1 5 4.9 4.8 Vout (V) Iout=150mA 4 3.5 3 0 Vout (V) 4.5 3.0V 1.8V 1.1V Vin=0.9V 1.5V 60mA 10mA 1 2 3 4.7 4.6 4.5 0.1 1 10 100 1000 Vin (V) Iout (mA) EFFICIENCY - Iout 100 90 5.2 Vout1 - Top Vin=3.0V, Iout=60mA 3.0V 1.8V 1.5V Vin=0.9V 1.1V 5.1 EFFICIENCY (%) 80 70 60 50 40 30 20 10 0 0.1 1 10 100 Vout1(V) 5 4.9 1000 4.8 -20 -10 0 10 20 30 40 50 60 70 Iout (mA) Top(°C) Vst - Iout 2 Load-Transient Response 200 s /div 1.5 Vst (V) -20°C 1 Vout, 50mV/div +70°C 0.5 Iout 100mA 100 A +25°C 0 0.1 1 10 100 Iout (mA) 15 - 14 ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter • ELM9227xx, ELM9230xx, ELM9233xx, ELM9250xx (L=2.2μH, Cout=47μF, D=MA735, Top=25°C) Iss1 - Top 600 9250XX 500 Iss1 ( A) 400 9230XX 300 9233XX 9227XX 200 -20 -10 0 10 20 30 40 50 60 70 Top (°C) • ELM92xxxx (L=2.2μH, Cout=47μF, D=MA735, Top=25°C) Fosc - Top 700 680 660 95 Duty - Top Fosc (kHz) 620 600 580 560 540 520 500 -20 -10 0 10 20 30 40 50 60 70 Duty (%) 640 90 85 80 75 -20 -10 0 10 20 30 40 50 60 70 Top (°C) Top (°C) Vceh - Vout 0.8 0.7 Top= -20°C 0.6 0.6 0.8 0.7 Vcel - Vout Top= -20°C +25°C +70°C Vceh(V) 0.5 0.4 0.3 0.2 2 Vcel(V) 6 +25°C +70°C 0.5 0.4 0.3 0.2 2 3 4 5 3 4 5 6 Vout(V) Vout(V) 15 - 15