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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) : Vin0.9V : Typ.600kHz : 250mA (When Vin=1.5V, Vout=3.0V) : Max. 0.5A (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
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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)
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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=2.2H, Cout=47F, D=MA735, Vss=0V, Top=25C 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 x1.005 x1.010 x1.020 Iss1 Vout=Vout(T)x0.95 280 450 A 2 Iss2 Vout=Vout(T)+ 0.5V 70 110 A 2 Fosc Vout=Vout(T)x0.95 510 600 690 kHz 3 Duty Vout=Vout(T)x0.95 80 88 95 % 3 Fimt Ron Ilxl Vout=Vout(T)x0.95 Vout=Vlx=7V 12 270 17 370 1 kHz m A 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=2.2H, Cout=47F, D=MA735, Vss=0V, Top=25C 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 x1.005 x1.010 x1.020 Iss1 Vout=Vout(T)x0.95 300 480 A 2 Iss2 Vout=Vout(T)+0.5V 75 120 A 2 Fosc Vout=Vout(T)x0.95 510 600 690 kHz 3 Duty Vout=Vout(T)x0.95 80 88 95 % 3 Fimt Ron Ilxl Vout=Vout(T)x0.95 Vout=Vlx=7V 12 250 17 340 1 kHz m A 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=2.2H, Cout=47F, D=MA735, Vss=0V, Top=25C 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 x1.005 x1.010 x1.020 Iss1 Vout=Vout(T)x0.95 320 510 A 2 Iss2 Vout=Vout(T)+0.5V 80 130 A 2 Fosc Vout=Vout(T)x0.95 510 600 690 kHz 3 Duty Vout=Vout(T)x0.95 80 88 95 % 3 Fimt Ron Ilxl Vout=Vout(T)x0.95 Vout=Vlx=7V 12 245 17 330 1 kHz m A 3 4 5
: input voltage to VOUT pin * Vout * Vout(T) : typical value of Vout1 * Remarks : test circuit No
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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=2.2H, Cout=47F, D=MA735, Vss=0V, Top=25C 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 x1.005 x1.010 x1.020 Iss1 Vout=Vout(T)x0.95 550 880 A 2 Iss2 Vout=Vout(T)+0.5V 90 145 A 2 Fosc Vout=Vout(T)x0.95 510 600 690 kHz 3 Duty Vout=Vout(T)x0.95 80 88 95 % 3 Fimt Ron Ilxl Vout=Vout(T)x0.95 Vout=Vlx=7V 12 220 17 300 1 kHz m A 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=2.2H, Cout=47F, D=MA735, Vss=0V, Top=25C 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 x1.005 x1.010 x1.020 Iss1 Vout=Vout(T)x0.95 280 450 A 2 Iss2 Vout=Vout(T)+0.5V 70 110 A 2 Isd Vout=Vout(T)x0.95, Vce=0 510 80 600 88 12 270 0.8 0.25 0.1 -0.1 0.5 690 95 17 370 1 A kHz % kHz m A V V A A 2 3 3 3 4 5 6 6 6 6
Fosc Vout=Vout(T)x0.95 Duty Vout=Vout(T)x0.95 Fimt Ron Vout=Vout(T)x0.95 Ilxl Vout=Vlx=7V Vceh Vcel Vout=Vout(T)x0.95, Iceh Vce=Vout(T)x0.95 Icel Vout=Vout(T)x0.95, Vce=0
* Vout(T) : typical value of Vout1 * Remarks : test circuit No
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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=2.2H, Cout=47F, D=MA735, Vss=0V, Top=25C 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 x1.005 x1.010 x1.020 Iss1 Vout=Vout(T)x0.95 300 480 A 2 Iss2 Vout=Vout(T)+0.5V 75 120 A 2 Isd Vout=Vout(T)x0.95, Vce=0 510 80 600 88 12 250 0.8 0.25 0.1 -0.1 0.5 690 95 17 340 1 A kHz % kHz m A V V A A 2 3 3 3 4 5 6 6 6 6
Fosc Vout=Vout(T)x0.95 Duty Vout=Vout(T)x0.95 Fimt Ron Vout=Vout(T)x0.95 Ilxl Vout=Vlx=7V Vceh Vcel Vout=Vout(T)x0.95, Iceh Vce=Vout(T)x0.95 Icel Vout=Vout(T)x0.95, 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=2.2H, Cout=47F, D=MA735, Vss=0V, Top=25C 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 x1.005 x1.010 x1.020 Iss1 Vout=Vout(T)x0.95 320 510 A 2 Iss2 Vout=Vout(T)+0.5V 80 130 A 2 Isd Vout=Vout(T)x0.95, Vce=0 510 80 600 88 12 245 0.8 0.25 0.1 -0.1 0.5 690 95 17 330 1 A kHz % kHz m A V V A A 2 3 3 3 4 5 6 6 6 6
Fosc Vout=Vout(T)x0.95 Duty Vout=Vout(T)x0.95 Fimt Ron Vout=Vout(T)x0.95 Ilxl Vout=Vlx=7V Vceh Vcel Vout=Vout(T)x0.95, Iceh Vce=Vout(T)x0.95 Icel Vout=Vout(T)x0.95, Vce=0
* Vout(T) : typical value of Vout1 * Remarks : test circuit No
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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=2.2H, Cout=47F, D=MA735, Vss=0V, Top=25C 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 x1.005 x1.010 x1.020 Iss1 Vout=Vout(T)x0.95 550 880 A 2 Iss2 Vout=Vout(T)+0.5V 90 145 A 2 Isd Vout=Vout(T)x0.95, Vce=0 510 80 600 88 12 220 0.8 0.25 0.1 -0.1 0.5 690 95 17 300 1 A kHz % kHz m A V V A A 2 3 3 3 4 5 6 6 6 6
Fosc Vout=Vout(T)x0.95 Duty Vout=Vout(T)x0.95 Fimt Ron Vout=Vout(T)x0.95 Ilxl Vout=Vlx=7V Vceh Vcel Vout=Vout(T)x0.95, Iceh Vce=Vout(T)x0.95 Icel Vout=Vout(T)x0.95, 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)x0.95 * Fimt : Vin=Vout1(1.005 to 1.020)
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ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter
4. RON
* Vlx=3V, R=30 R * Von * Ron= Vlx-Von
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 2.2H. 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 4.7H 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 47F to 220F. When Vin is high (Vin>Voutx0.7), 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 47F to 220F 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.
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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)
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ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter
Typical characteristics
* Vout=2.7V (ELM9227xx) (L=2.2H, Cout=47F, D=MA735, Top=25C)
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
-20C +70C
Vout, 50mV/div Iout 100mA 100 A
0.5
+25C
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=2.2H, Cout=47F, D=MA735, Top=25C)
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)
-20C
1
Vout, 50mV/div
+70C
0.5
Iout
100mA 100 A
+25C
0 0.1
1
10
100
Iout (mA)
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ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter
* Vout=3.3V (ELM9233xx) (L=2.2H, Cout=47F, D=MA735, Top=25C)
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)
-20C
1
Vout, 50mV/div
+70C
0.5
Iout
100mA 100 A
+25C
0 0.1
1
10
100
Iout (mA)
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ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter
* Vout=5.0V (ELM9250xx) (L=2.2H, Cout=47F, D=MA735, Top=25C)
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)
-20C
1
Vout, 50mV/div
+70C
0.5
Iout
100mA 100 A
+25C
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=2.2H, Cout=47F, D=MA735, Top=25C)
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=2.2H, Cout=47F, D=MA735, Top=25C)
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= -20C 0.6 0.6 0.8 0.7
Vcel - Vout
Top= -20C +25C +70C
Vceh(V)
0.5 0.4 0.3 0.2 2
Vcel(V)
6
+25C +70C
0.5 0.4 0.3 0.2 2
3
4
5
3
4
5
6
Vout(V)
Vout(V)
15 - 15

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