ncp1578 ON Semiconductor, ncp1578 Datasheet - Page 10
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ncp1578
Manufacturer Part Number
ncp1578
Description
Synchronous Step Down Controller With 50ma Linear Regulator
Manufacturer
ON Semiconductor
Datasheet
1.NCP1578.pdf
(22 pages)
3.350
3.325
3.300
3.275
3.250
100
90
80
70
60
50
0.1
5
Figure 16. V
Figure 18. V
Figure 20. Power Up Sequence
10
I
o
o
V
, OUTPUT CURRENT (A)
Output Voltage vs. Input Voltage
o
in
, INPUT VOLTAGE (V)
Efficiency vs. Output Current
(Single Supply)
I
I
o
o
15
V
F
T
With Power Saving
Without Power Saving
1
= 0 A
= 5 A
A
SW
o
TYPICAL OPERATING CHARACTERISTICS
= 3.3 V
= 25°C
= 300 kHz
20
V
V
V
in
in
in
http://onsemi.com
= 24 V
= 6 V
= 12 V
NCP1578
25
10
10
3.350
3.325
3.300
3.275
3.250
100
90
80
70
60
50
0.5
0.1
Figure 19. V
Figure 17. V
Figure 21. Power Down Sequence
1.5
I
I
o
o
, OUTPUT CURRENT (A)
, OUTPUT CURRENT (A)
o
(Separate Supply)
o
Efficiency vs. Output Current
Output Voltage vs. Output
V
V
o
o
2.5
Current
= 24 V
= 6 V
1
V
V
F
T
A
SW
BAT
o
With Power Saving
Without Power Saving
= 3.3 V
= 25°C
= 300 kHz
= +5.0 V
3.5
V
V
V
in
in
in
= 12 V
= 6 V
= 24 V
4.5
10