rt9275 Richtek Technology Corporation, rt9275 Datasheet - Page 5

• Manufacturer Part Number: rt9275
• Description: Tiny Package, High Efficiency, Step-up Dc/dc Converter
• Manufacturer: Richtek Technology Corporation

Typical Operating Characteristics
DS9275-06 March 2007
500
450
400
350
300
250
200
150
100
100
2.6
2.4
2.2
1.8
1.6
1.4
1.2
0.8
0.6
0.4
0.2
50
95
90
85
80
75
70
65
60
55
50
0
2
1
0
-20 -10
-20 -10
1
V
V
V
IN
IN
OUT
Efficiency vs. Output Current
= 2V, V
= 2V, V
= 5V, T
Current Limit vs. Temperature
Frequency vs. Temperature
0
0
OUT
OUT
A
10
10
= 25°C
Temperature
Output Current (mA)
Temperature
= 3.3V, I
= V
10
20
20
DD
= 3.3V
30
30
LOAD
40
40
= 60mA
(°C)
(°C)
50
50
100
60
60
V
V
V
V
V
V
V
70
70
IN
IN
IN
IN
IN
IN
IN
= 4.5V
= 4.0V
= 3.5V
= 3.0V
= 2.5V
= 2.0V
= 1.5V
Preliminary
80
80
1000
90
90
1.252
1.248
1.246
1.244
1.25
3.32
3.31
3.29
3.28
3.27
3.26
3.25
3.3
95
90
85
80
75
70
65
60
55
50
-20
1
1
V
V
V
IN
OUT
V
V
V
V
V
OUT
Output Voltage vs. Output Current
IN
IN
IN
IN
IN
= 2V, V
= 3.3V, T
= 3.0V
= 2.5V
= 2.0V
= 1.5V
= 1.0V
= 3.3V
Efficiency vs. Output Current
Feedback vs. Temperature
0
OUT
Temperature
A
= 3.3V, I
Output Current (mA)
Output Current (mA)
= 25°C
10
10
20
LOAD
= 60mA
(°C)
40
RT9275
100
100
www.richtek.com
V
V
V
V
V
60
IN
IN
IN
IN
IN
= 3.0V
= 2.5V
= 2.0V
= 1.5V
= 1.0V
1000
1000
5
80