ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter
L=2.2μH, Cout=47μF, D=MA735, Vss=0V, Top=25°C
Condition Min. Typ. Max. Unit Note
Vout=5.0V (ELM92501x)
Parameter
Input voltage
Starting voltage
Output voltage1
Symbol
Vin
Vst No-load
7
0.9
V
V
V
1
1
Vout1 Iout=60mA, Vin=3V
4.875 5.000 5.125
Vout1 Vout1 Vout1
×1.005 ×1.010 ×1.020
Output voltage2
Vout2 Iout=0.1mA, Vin=3V
V
1
Current consumption1
Current consumption2
Oscillating frequency
Duty ratio
Iss1 Vout=Vout(T)×0.95
Iss2 Vout=Vout(T)+0.5V
Fosc Vout=Vout(T)×0.95
Duty Vout=Vout(T)×0.95
550
90
600
88
880
145
690
95
μA
μA
kHz
%
2
2
3
3
510
80
Frequency of
Fimt
12
17
300
1
kHz
mΩ
μA
3
4
5
intermittent control
On-resistance of LX switch
Leakage current of
LX switch
Ron Vout=Vout(T)×0.95
Ilxl Vout=Vlx=7V
220
Vout
: input voltage to VOUT pin
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Vout(T) : typical value of Vout1
Remarks : test circuit No
■Electrical characteristics (ELM92xx2x)
Vce=Vout, L=2.2μH, Cout=47μF, D=MA735, Vss=0V, Top=25°C
Condition Min. Typ. Max. Unit Note
Vout=2.7V (ELM92272x)
Parameter
Symbol
Vin
Input voltage
Starting voltage
Output voltage1
7
0.9
V
V
V
Vst No-load
Vout1 Iout=60mA, Vin=1.5V
1
1
2.633 2.700 2.767
Vout1 Vout1 Vout1
×1.005 ×1.010 ×1.020
Output voltage2
Vout2 Iout=0.1mA, Vin=1.5V
V
1
Current consumption1
Current consumption2
Current consumption
in Shutdown
Oscillating frequency
Duty ratio
Iss1 Vout=Vout(T)×0.95
Iss2 Vout=Vout(T)+0.5V
280
70
450
110
μA
μA
2
2
Isd Vout=Vout(T)×0.95, Vce=0
0.5
μA
2
Fosc Vout=Vout(T)×0.95
Duty Vout=Vout(T)×0.95
510
80
600
88
690
95
kHz
%
3
3
Frequency of
Fimt
12
17
kHz
3
Intermittent control
On-resistance of LX switch
Leakage current of LX switch
CE Input voltage "H"
CE Input voltage "L"
Ron Vout=Vout(T)×0.95
Ilxl Vout=Vlx=7V
Vceh
Vcel
270
370
1
mΩ
μA
V
4
5
6
6
0.8
0.25
0.1
V
Vout=Vout(T)×0.95,
CE Input current "H"
Iceh
μA
μA
6
6
Vce=Vout(T)×0.95
CE Input current "L"
Icel Vout=Vout(T)×0.95, Vce=0
-0.1
Vout : input voltage to VOUT pin
Vce : input voltage to CE pin
Vout(T) : typical value of Vout1
Remarks : test circuit No
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15 - 5
ELM-TECH [ ELM Technology Corporation ]
