CMOS High efficiency PFM step-up DC/DC converter
ELM93xxxB
■Electrical characteristics
L=330μH, Cin=Cout=22μF, D=MA721, Vss=0V, Top=25°C
Condition Min. Typ. Max. Unit
Vout=2.7V (ELM9327xB)
Parameter
Symbol
Vst RL=30kΩ
Vhold Iout=1mA
Starting voltage
Holding voltage
0.9
0.7
V
V
Current consumption
Output voltage
Output current of LX pin
Leakage current of LX pin
Oscillating frequency
Duty ratio
Iss Iout=100μA, Vin=1.5V
Vout Iout=1mA, Vin=1.5V
Ilx Vout=2.6V, Vlx=0.4V
Ilxl Vout=3.5V, Vlx=3.5V
Fosc Vout=2.6V
8.0
16.0
μA
V
mA
μA
kHz
%
2.63 2.70 2.77
60
1.0
120
85
80
65
100
75
Duty Vout=2.6V, Switch"ON"
L=330μH, Cin=Cout=22μF, D=MA721, Vss=0V, Top=25°C
Condition Min. Typ. Max. Unit
Vout=3.0V (ELM9330xB)
Parameter
Starting voltage
Symbol
Vst RL=30kΩ
Vhold Iout=1mA
0.9
0.7
V
V
Holding voltage
Current consumption
Output voltage
Output current of LX pin
Leakage current of LX pin
Oscillating frequency
Duty ratio
Iss Iout=100μA, Vin=1.5V
Vout Iout=1mA, Vin=1.5V
Ilx Vout=2.9V, Vlx=0.4V
Ilxl Vout=3.5V, Vlx=3.5V
Fosc Vout=2.9V
8.0
16.0
μA
V
mA
μA
kHz
%
2.92 3.00 3.08
70
1.0
120
85
80
65
100
75
Duty Vout=2.9V, Switch"ON"
L=330μH, Cin=Cout=22μF, D=MA721, Vss=0V, Top=25°C
Condition Min. Typ. Max. Unit
Vout=3.3V (ELM9333xB)
Parameter
Starting voltage
Symbol
Vst RL=30kΩ
Vhold Iout=1mA
0.9
0.7
V
V
Holding voltage
Current consumption
Output voltage
Output current of LX pin
Leakage current of LX pin
Oscillating frequency
Duty ratio
Iss Iout=100μA, Vin=1.5V
Vout Iout=1mA, Vin=1.5V
Ilx Vout=3.2V, Vlx=0.4V
Ilxl Vout=3.5V, Vlx=3.5V
Fosc Vout=3.2V
8.0
16.0
μA
V
mA
μA
kHz
%
3.21 3.30 3.39
80
1.0
120
85
80
65
100
75
Duty Vout=3.2V, Switch"ON"
8 - 3
ELM-TECH [ ELM Technology Corporation ]
