Preliminary
Typical Operating Charateristics
Start-up/Hold-on Voltage Vstart/Vhold (V)
1.4
RT9261/A
RT9261(2.7V)
Output Current vs. Ripple Voltage
RT9261(2.7V)
Start-up/Hold-on Voltage vs. Output Current
120
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
10
20
30
100
80
V
start
Ripple Voltage (mV p-p)
V
hold
2.0V
60
1.5V
40
20
0
2.5V
RT9261
V
OUT
= 2.7V
40
50
0.9V
RT9261
V
OUT
= 2.7V
0
20
40
60
80
100
Output Current (mA)
Output Current (mA)
RT9261(2.7V)
Output Voltage vs. Output Current
3.0
2.5
Output Voltage vs. Temperature
2.90
2.85
2.5V
0.9V
1.
0V
1.5V
2.0V
Output Voltage (V)
Output Voltage (V)
2.0
1.5
1.0
0.5
0.0
0
20
40
60
2.80
2.75
2.70
2.65
2.60
-40
-20
0
20
40
RT9261
V
OUT
= 2.7V
80
100
RT9261
V
OUT
= 2.7V
60
80
Output Current (mA)
Temperature (
°
C)
90
80
RT9261(2.7V)
Efficiency vs. Output Current
2.0V
0.9V
1.0V
1.5V
Supply Current vs. Temperature
70
60
Supply Current (
µ
A)
70
2.5V
RT9261
V
OUT
= 2.7V
Efficiency (%)
60
50
40
30
20
10
0
0
50
40
30
20
Input Current 2
RT9261
V
OUT
= 2.7V
20
40
60
80
100
10
0
-40
-20
0
20
40
60
80
Input Current 1
Output Current (mA)
Temperature (
°
C)
DS9261/A-03 January 2002
www.richtek-ic.com.tw
9
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
