FAN5308_07 FAIRCHILD [Fairchild Semiconductor], FAN5308_07 Datasheet - Page 5

• Manufacturer Part Number: FAN5308_07
• Description: 800mA High-Efficiency Step-Down DC-DC Converter
• Manufacturer: FAIRCHILD [Fairchild Semiconductor]

© 2005 Fairchild Semiconductor Corporation
FAN5308 Rev. 1.0.2
Typical Performance Characteristics
T
A
= 25°C, C
100
Figure 7. Quiescent Current vs. Input Voltage
100
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
95
90
85
80
75
70
65
60
0
2.5
0.1
1
R
Figure 3. Efficiency vs. Load Current
Figure 5. Efficiency vs. Load Current
2
V
R
V
= 10kΩ
OUT
V
2
OUT
V
V
IN
= 100kΩ
OUT
IN
IN
= 3.6V
= 1.2V
3.0
= 1. 2V
= 3. 6V
= 3V
= 10µF, C
1
V
3.5
IN
10
Load Current (mA)
Load Current (mA)
= 2.5V
Input Voltage (V)
OUT
V
V
IN
OUT
= 5V
4.0
10
= 3.3V
= 20µF, L = 3.3µH, R
V
100
IN
4.5
= 5.5V
R
V
100
V
IN
OUT
2
= 100kΩ
= 3.6V
= 1.2V
5.0
1000
1000
2
5.5
= 10kΩ, unless otherwise noted.
5
1.214
1.212
1.210
1.208
1.206
1.204
1.202
1.200
1.198
1.196
1.194
1.192
100
1400
1380
1360
1340
1320
1300
1280
1260
1240
1220
1200
95
90
85
80
75
70
65
60
55
50
45
40
35
0.1
Figure 6. Output Voltage vs. Load Current
-40
0
V
Figure 4. Efficiency vs. Load Current
Figure 8. Frequency vs. Temperature
IN
= 5.5V
V
-20
IN
200
= 5V
1
V
0
IN
V
Load Current (mA)
IN
Load Current (mA)
Temperature (°C)
= 3.6V
= 3.9V
400
20
V
IN
10
= 5.5V
V
40
IN
600
= 2.5V
V
R
60
OUT
100
2
= 100kΩ
= 3.3V
800
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80
1000
1000
100