ELM91xxxxA CMOS PFM Step-up DC/DC converter and controller
• ELM91501xA(L=100μH, Cin=Cout=47μF, D=MA2Z748, Top=25°C)
Vout-Vin
Vout-Iout
5.5
5
5.5
5
1.1V
3.0V
1.8V
4.5
4
Iout=1mA
Iout=10mA
Vin=0.9V
1.5V
3.5
3
4.5
4
Iout=40mA
2.5
2
1.5
1
3.5
3
0.5
0
0.5
1
1.5
2
2.5
3
0.1
1
10
100
1000
Vin (V)
Iout (mA)
EFFICIENCY-Iout
RIPPLE VOLTAGE-Iout
100
90
80
70
60
50
40
160
140
120
100
80
3.0V
1.8V
1.5V
Vin=0.9V
1.8V
1.1V
60
3.0V
40
1.5V
1.1V
20
Vin=0.9V
0
0.1
1
10
100
1000
0
20 40 60 80 100 120 140 160 180 200
Iout (mA)
Iout (mA)
22 - 13