ELM91181AA-S Datasheet, PDF (11/22 Pages) ELM Technology Corporation – CMOS PFM Step-up DC/DC converter and controller

ELM91xxxxA CMOS PFM Step-up DC/DC converter and controller
• ELM91331xA(L=100μH, Cin=Cout=47μF, D=MA2Z748, Top=25°C)
Vout-Vin
4
3.5
3
Iout=1mA
2.5
2
Iout=10mA
1.5
Iout=40mA
1
0.5
0 0.5 1 1.5 2 2.5 3
Vin (V)
4
3.5
3
2.5
2
1.5
0.1
Vout-Iout
1.1V
2.4V
Vin=0.9V
1.8V
1.5V
1
10
100
1000
Iout (mA)
100
90
80
70
60
50
40
0.1
EFFICIENCY-Iout
2.4V
Vin=0.9V
1.8V
1.5V
1.1V
1
10
100
1000
Iout (mA)
RIPPLE VOLTAGE-Iout
200
180
160
140
1.8V
2.4V
120
100
80
1.5V
60
40
1.1V
20
Vin=0.9V
0
0 20 40 60 80 100 120 140 160 180 200
Iout (mA)
22 - 11