ELM91xxxxA
CMOS PFM Step-up DC/DC converter and controller
ELM91501xA
Parameter
Output voltage
Input voltage
Starting voltage
Holding voltage
Current consumption 1
Current consumption 2
On-resistance of LX switch
Leakage current of LX pin
Oscillating frequency
Voltage limit of LX pin
(LX switch ON)
Duty ratio
L=100μH, Cin=Cout=47μF, D=MA2Z748, Vss=0V, Top=25°C
Symbol
Condition
Min.
Typ. Max. Unit
Vout Iout=1mA, Vin=3V
4.875 5.000 5.125
V
Vin
0.9
6.0
V
Vst Iout=1mA
0.9
V
Vhold Iout=1mA
0.7
V
Iss1 Vout=Vout(T)×0.95
20
45
μA
Iss2 Vout=Vout(T)+0.5V
2
5
μA
Ron Vout=Vout(T)×0.95
0.7
1.5
Ω
Ilxl Vout=Vlx=6V
1
μA
Fosc Vout=Vout(T)×0.95
80
100
120
kHz
Vlxlim Vout=Vout(T)×0.95
Vout(T): Typ. value of Vout.
0.5
67
0.7
75
0.9
83
V
%
* Vout: Input voltage to out pin;
Duty Vout=Vout(T)×0.95
■Electrical characteristics (ELM91xx3xA)
ELM91183xA
FET=ELM37400FA, L=33μH, Cin=Cout=100μF, D=MA735, Vss=0V, Top=25°C
Parameter
Symbol
Condition
Min. Typ. Max. Unit
Output voltage
Vout Iout=1mA, Vin=1.5V
1.755 1.800 1.845 V
Input voltage
Vin
0.9
6.0
V
Starting voltage
Vst Iout=1mA
1.1
V
Holding voltage
Vhold Iout=1mA
0.7
V
Current consumption 1
Iss1 Vout=Vout(T)×0.95, EXT: No-Load
10
25
μA
Current consumption 2
Iss2 Vout=Vout(T)+0.5V
2
5
μA
On-resistance of EXT “High”
Rexth Vout=Vout(T)×0.95, Vext=Vout-0.4V
90
170
Ω
On-resistance of EXT “Low”
Rextl Vout=Vout(T)×0.95, Vext=0.4V
70
120
Ω
Oscillating frequency
Fosc Vout=Vout(T)×0.95
80
100
120 kHz
Duty ratio
Duty Vout=Vout(T)×0.95
67
75
83
%
Vout(T): Typ. value of Vout.
* Vout: Input voltage to out pin;
ELM91303xA
FET=ELM37400FA, L=33μH, Cin=Cout=100μF, D=MA735, Vss=0V, Top=25°C
Parameter
Symbol
Condition
Min. Typ. Max. Unit
Output voltage
Vout Iout=1mA, Vin=1.5V
2.925 3.000 3.075 V
Input voltage
Vin
0.9
6.0
V
Starting voltage
Vst Iout=1mA
1.1
V
Holding voltage
Vhold Iout=1mA
0.7
V
Current consumption 1
Iss1 Vout=Vout(T)×0.95, EXT: No-Load
14
35
μA
Current consumption 2
Iss2 Vout=Vout(T)+0.5V
2
5
μA
On-resistance of EXT “High”
Rexth Vout=Vout(T)×0.95, Vext=Vout-0.4V
50
86
Ω
On-resistance of EXT “Low"
Rextl Vout=Vout(T)×0.95, Vext=0.4V
36
60
Ω
Oscillating frequency
Fosc Vout=Vout(T)×0.95
80
100
120 kHz
Duty ratio
Duty Vout=Vout(T)×0.95
67
75
83
%
Vout(T): Typ. value of Vout.
* Vout: Input voltage to out pin;
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