PAM2308
Dual High-Efficiency PWM Step-Down DC-DC Coverter
Typical Performance Characteristics
TA=25°C, CIN=10μF, CO=10μF, L=4.7μH, unless otherwise noted.
Efficiency VS Input Voltage (Vo=1.2V)
Efficiency vs Input Voltage (Vo=1.5V)
100
90
80
70
60
50
40
30
100
90
80
70
60
50
40
30
10mA
Io=10mA
Io=100mA
Io=800mA
100mA
800mA
2.5
3
3.5
4
4.5
5
5.5
3
3.5
4
4.5
5
5.5
Input Voltage(V)
Input Voltage(V)
Efficiency vs Input Voltage (Vo=1.8V)
Efficiency vs Input Voltage (Vo=2.5V)
100
90
80
70
60
50
40
30
100
90
80
70
60
50
40
30
10mA
10mA
100mA
800mA
100mA
800mA
3
3.5
4
4.5
5
5.5
2.5
3
3.5
4
4.5
5
5.5
Input Voltage(V)
Input Voltage(V)
Eifficiency VS Input Voltage (Vo=3.3V)
Efficiency vs Input Voltage (Vo=2.8V)
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
10mA
Io=10mA
Io=100mA
Io=800mA
100mA
800mA
3.5 3.75
4
4.25 4.5 4.75
Input Voltage(V)
5
5.25 5.5
3
3.5
4
4.5
5
5.5
Input Voltage(V)
Power Analog Microelectronics,Inc
www.poweranalog.com
07/2008 Rev 1.0
7
PAM [ POWER ANALOG MICOELECTRONICS ]
