ELM601BA 1.5A 2.5MHz
high efficiency synchronous PWM step-down DC/DC converter
• Vout=3.3V : Cin=10µF, Cout=10µF, L=1.2µH, R1=69kΩ, R2=30kΩ,Top=25°C
Vout-Vin
EFFICIENCY-Iout
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
100
80
60
40
20
0
Vin=5V
Iout=1mA
100mA
0.1
1
10
100
1000
0
1
0
1.5
3
4.5
5.5
Iout (mA)
Vin (V)
Start Response
Vout-Iout
Ven=Vin=5V, No load
3.5
3.5
3.4
3.3
3.2
3.1
3
2
1
0
5
4
3
2
1
0
Vin=5V
0
0.5
1
1.5
2
10
100
1000
Time (ms)
Iout (mA)
Load Transient Response
Load Transient Response
Vin=5V, Iout=10mA�1.3A
Vin=5V, Iout=200mA�1.3A
4
3.5
3
4
3.5
3
2
2
1.3
1
1.3
1
0
0
0
0.5
1
1.5
2
2.5
3
3.5
4
0.5
1
1.5
2
2.5
3
3.5
4
Time (ms)
Time (ms)
Rev.1.0
7 - 7