Preliminary
RT9261B
Start-up/Hold-on Voltage vs. Output Current
Output Voltage vs. Output Current
2.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
3.0V
2.5V
2
1.5V
2.0V
1.0V
1.5
1
Vstart
Vhold
0.5
0
VOUT
3.3V
=
VOUT
3.3V
=
0
20
40
60
80
100
120
0
50
100
150
200
Output Current (mA)
Output Current (mA)
Output Current vs. Ripple Voltage
Output Current vs. Ripple Voltage
300
250
200
150
100
50
90
80
70
60
50
40
30
20
10
0
2.0V
3.0V
2.5V
2.5V
3.0V
2.0V
VOUT = 3.3V
VOUT = 3.3V
1.0V
COUT = 20uF
L = 100uH
COUT = 68uF
L = 100uH
1.5V
1.5V
50
1.0V
50
0
0
100
150
200
0
100
150
200
Output Current (mA)
Output Current (mA)
Output Current vs. Ripple Voltage
Efficiency vs. output Current
100
90
80
70
60
50
40
30
20
10
0
18
16
14
12
10
8
2.5V
3.0V
2.5V
3.0V
2.0V
1.0V
2.0V
1.5V
1.0V
6
4
VOUT = 3.3V
COUT = 170uF
L = 100uH
VOUT
3.3V
=
2
1.5V
0
0
50
100
150
200
0
50
100
150
200
Output Current (mA)
Output Current (mA)
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6
DS9261B-12 March 2007
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
