ncp1578 ON Semiconductor, ncp1578 Datasheet - Page 10

• Manufacturer Part Number: ncp1578
• Description: Synchronous Step Down Controller With 50ma Linear Regulator
• Manufacturer: ON Semiconductor

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