ELM620BA_17 Datasheet, PDF (7/10 Pages) ELM Technology Corporation – 1.4MHz high efficiency synchronous PWM step up DC/DC converter

ELM620BA 1.4MHz
high efficiency synchronous PWM step up DC/DC converter
http://www.elm-tech.com
■Typical characteristics
• V=3.3V
• Vout=3.3V : Cin=22µF, Cout=22µF, L=2.2µH, R1=46.6kΩ, R2=26.7kΩ, Top=25°C
Vout-Vin
4.0
3.5 Iout=1mA
3.0
100mA
2.5
10mA
2.0
1.5
1.0
0.5
0 0.5 1 1.5 2 2.5 3
Vin (V)
100
80
60
40
20
0
0.1
EFFICIENCY-Iout
Vin=3V
Vin=2.4V
Vin=1.8V
Vin=1.5V
1
10
100 1000
Iout (mA)
Vout-Iout
4
3
Vin=3V
Vin=2.4V
Vin=1.8V
2
Vin=1.5V
1
1
10
100
1000
Iout (mA)
Vhold-Iout
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
10 20 30 40 50
Iout (mA)
10 - 7
Rev.1.0