FAN5353 Fairchild Semiconductor, FAN5353 Datasheet - Page 5

• Manufacturer Part Number: FAN5353
• Description: The FAN5353 is a step-down switching voltage regulator that delivers an adjustable output from an input voltage supply of 2
• Manufacturer: Fairchild Semiconductor

© 2009 Fairchild Semiconductor Corporation
FAN5353 • Rev. 1.0.2
Typical Characteristics
Unless otherwise specified, V
Figure 7. Shutdown Supply Current vs. V
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
100%
0%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0%
1
0
Figure 3. Efficiency vs. I
1
Figure 5. Efficiency vs. I
2.7
1
3.2
10
10
I
LOAD
I
LOAD
3.7
Output Current (mA)
Input Voltage(V)
Output Current (mA)
IN
100
= 5V, V
100
4.2
LOAD
LOAD
VIN = 3.3V
VIN = 5V
OUT
at V
at V
4.7
1000
= 1.2V, circuit of Figure 1, and components per Table 1.
VIN = 3.3V
VIN = 5V
OUT
OUT
1000
= 1.2V
= 2.5V
IN
, EN to 0V
5.2
85°C
25°C
‐40°C
10000
10000
5
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
100%
0%
90%
80%
70%
60%
50%
40%
30%
20%
10%
16
15
14
13
12
11
10
0%
Figure 8. Quiescent Current vs. V
9
8
Figure 4. Efficiency vs. I
1
Figure 6. Efficiency vs. I
2.7
1
3.2
10
10
I
LOAD
I
LOAD
3.7
VIN Input Voltage (V)
Output Current (mA)
Output Current (mA)
100
100
LOAD
LOAD
4.2
VIN = 4.2V
VIN = 5V
VIN = 3.3V
at V
at V
1000
85°C
25°C
–40°C
4.7
IN
OUT
OUT
1000
, No Load
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= 1.8V
= 3.3V
VIN = 5V
5.2
10000
10000