ELM92xxxx CMOS 600kHz High output current PWM step-up DC/DC converter
■Typical characteristics
• Vout=2.7V (ELM9227xx) (L=2.2μH, Cout=47μF, D=MA735, Top=25°C)
Vout - Vin
Vout - Iout
3.5
3
3
2.9
2.8
2.7
2.6
2.5
2.4
1.1V 1.5V 1.8V
2.5
2
Vin=0.9V
Iout=150mA
60mA
10mA
1.5
1
0
1
2
0.1
1
10
100
1000
Vin (V)
Iout (mA)
Vout1 - Top
EFFICIENCY - Iout
Vin=0.9V
2.8
2.75
2.7
100
90
80
70
60
50
40
30
20
10
0
Vin=1.5V, Iout=60mA
1.8V
1.5V
1.1V
2.65
2.6
-20 -10
0
10 20 30 40 50 60 70
Top(°C)
0.1
1
10
100
1000
Iout (mA)
Vst - Iout
Load-Transient Response
2
200 ˩s /div
1.5
1
-20°C
+25°C
Vout, 50mV/div
Iout
+70°C
0.5
0
100mA
100 ˩A
0.1
1
10
100
Iout (mA)
15 - 11