ncp1508 ON Semiconductor, ncp1508 Datasheet - Page 7

• Manufacturer Part Number: ncp1508
• Description: Up To 500 Ma, 1 Mhz, High Efficiency Synchronous Stepdown Dcdc Converter In Dfn Package
• Manufacturer: ON Semiconductor

−10
−20
−30
−40
1050
1000
1100
40
30
20
10
20
16
12
950
900
850
0
8
4
0
0
−40
0
Figure 14. Oscillator Frequency vs. Temperature
V
T
V
V
I
PWM
V
V
T
out
1.89 V
A
A
in
in
out
out
in
Figure 12. Load Regulation in PWM Mode
1.5 V
= 25°C
= 25°C
= 3.6 V PWM
= 3.6 V
= 3.6 V
= 100 mA
= 1.5 V
= 1.5 V
−20
Figure 10. Input Current Comparison
5
out
100
out
0
10
TEMPERATURE (°C)
200
I
out
I
out
20
15
(mA)
(mA)
1.3 V
300
40
out
20
PWM
Pulsed Mode
60
1.0 V
400
25
out
80
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30
500
100
7
1100
1050
1000
950
900
850
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
2.0
1.7
1.4
1.1
0.8
0.5
−40
2.7
0
Figure 11. Output Voltage vs. Output Current
V
I
T
PWM
V
T
out
V
I
A
out
out
A
in
in
Figure 13. Output Voltage vs. Temperature
= 25°C
Figure 15. Oscillator Frequency vs. Input
= 25°C
= 100 mA
= 3.6 V PWM
−20
= 3.6 V
= 100 mA PWM
= 1.5 V
3.2
100
0
TEMPERATURE (°C)
1.89 V
1.5 V
1.3 V
3.7
200
1.0 V
20
1.89 V
I
1.5 V
1.3 V
1.0 V
Voltage
out
V
out
out
out
out
in
(mA)
(V)
out
out
out
out
40
4.2
300
60
4.7
400
80
5.2
500
100