Conceptual
Typical Operating Characteristics
RT9293
Efficiency vs. Input Voltage
Efficiency vs. Output Current
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
VIN = 4.5V
ILOAD = 30mA
VIN = 4V
ILOAD = 10mA
ILOAD = 20mA
VOUT = 10V
VOUT = 34V
0
0.05
0.1
0.15
0.2
0.25
0.3
2.5
3
3.5
4
4.5
5
5.5
Output Current (A)
Input Voltage (V)
Output Voltage vs. Output Current
Quiescent Current vs. Input Voltage
40
35
30
25
20
15
10
500
450
400
350
300
250
200
VFB = 1.5V
VIN = 3.7V, VOUT = 34V
2.5
3
3.5
4
4.5
5
5.5
5
15
25
35
45
55
65
75
85
Input Voltage (V)
Output Current (mA)
Frequency vs. Input Voltage
Frequency vs. Temperature
1100
1050
1000
950
1100
1050
1000
950
900
900
850
850
VIN = 3.7V, ILED = 20mA
20 35 50 65 80 95 110 125
ILED = 20mA
5.5
800
800
-40 -25 -10
5
2.5
3
3.5
4
4.5
5
Temperature
(°C)
Input Voltage (V)
DS9293-03C April 2008
www.richtek.com
5
ETC [ ETC ]
