ncp1578 ON Semiconductor, ncp1578 Datasheet - Page 8

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

0.90
0.85
0.80
0.75
0.70
43.5
42.5
41.5
20
15
10
44
43
42
41
-40
-40
5
0
-40
Figure 8. IOC Current vs Ambient Temperature
Figure 4. V
Figure 6. V
-15
-15
-15
T
T
T
A
A
A
, AMBIENT TEMPERATURE (°C)
, AMBIENT TEMPERATURE (°C)
, AMBIENT TEMPERATURE (°C)
BAT
FB
Feed Back Voltage vs. Ambient
Shutdown Current vs. Ambient
V
V
Temperature
Temperature
in
10
10
10
in
= 6.0 V
= 24 V
TYPICAL OPERATING CHARACTERISTICS
35
35
35
60
60
60
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NCP1578
85
85
85
8
5.06
5.04
5.02
5.00
4.98
4.96
4.5
4.4
4.3
4.2
4.1
4.0
320
310
300
290
280
-40
-40
-40
Figure 7. Switching Frequency vs. Ambient
Figure 5. LDO5 Output Voltage vs. Ambient
Figure 9. Soft-Start Current vs. Ambient
V
in
-15
-15
-15
T
T
T
V
= 6 V, 0 mA
A
A
A
in
, AMBIENT TEMPERATURE (°C)
, AMBIENT TEMPERATURE (°C)
, AMBIENT TEMPERATURE (°C)
= 24 V, 0 mA
Temperature
Temperature
Temperature
10
10
10
V
in
35
35
35
V
= 6 V, 50 mA
in
= 24 V, 50 mA
60
60
60
85
85
85