ELM91xxxxA
CMOS PFM Step-up DC/DC converter and controller
ELM91333xA
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
3.218 3.300 3.382 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
15
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
46
83
Ω
On-resistance of EXT “Low”
Rextl Vout=Vout(T)×0.95, Vext=0.4V
33
55
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;
ELM91503xA
* Vout: Input voltage to out pin;
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=3V
4.875 5.000 5.125 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
20
45
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
33
59
Ω
On-resistance of EXT "Low"
Rextl Vout=Vout(T)×0.95, Vext=0.4V
24
45
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.
■Marking
• SOT-89, SOT-23 package : ELM91xx1xA
ELM91xx3xA
SOT-89
SOT-23
• SC-70 package : ELM91xx1CA
ELM91xx3CA
SC-70
a
c
b
a
b
c d
a
b
c
d
a to c : Assembly lot No.
A to Z (I, O, X excepted) and 0 to 9
a to d : Assembly lot No.
A to Z (I, O, X excepted) and 0 to 9
22 - 5
ELM-TECH [ ELM Technology Corporation ]
