PAM2305
1A Step-Down DC-DC Converters
Typical Performance Characteristics
T
A
=25 °C , C
IN
=10 μ F, C
O
=10uF, L=4.7 μ H, unless otherwise noted.
Efficiency VS Input Voltage ( Vo=1.2V )
100
90
Efficiency(%)
Efficiency(%)
100
90
80
70
60
50
Io=10mA
Efficiency vs Input Voltage ( Vo=1.5V )
80
70
60
50
40
30
3
3.5
4
4.5
5
5.5
Input Voltage(V)
Io=100mA
Io=800mA
10mA
40
30
2.5
3
100mA
800mA
3.5
4
4.5
5
5.5
Input Voltage(V)
Efficiency vs Input Voltage ( Vo=1.8V )
100
90
100
90
Efficiency vs Input Voltage ( Vo=2.5V )
Efficiency(%)
Efficiency(%)
80
70
60
50
10mA
80
70
60
50
10mA
40
30
2.5
3
100mA
800mA
40
30
100mA
800mA
3.5
4
4.5
5
5.5
3
3.5
4
4.5
5
5.5
Input Voltage(V)
Input Voltage(V)
100
90
Efficiency vs Input Voltage ( Vo=2.8V )
Eifficiency VS Input Voltage (Vo=3.3V)
100
90
80
70
60
50
40
30
20
10
0
Io=10mA
Io=100mA
Io=800mA
Efficiency(%)
70
60
50
10mA
40
30
3
100mA
800mA
Eifficiency(%)
80
3.5
4
4.5
5
5.5
3.5
3.75
4
4.25
4.5
4.75
5
5.25
5.5
Input Voltage(V)
Input Voltage(V)
Power Analog Microelectronics
,
Inc
www.poweranalog.com
09/2008 Rev 1.2
6
PAM [ POWER ANALOG MICOELECTRONICS ]
