ncp1400a ON Semiconductor, ncp1400a Datasheet - Page 7

• Manufacturer Part Number: ncp1400a
• Description: 100ma, Fixed Frequency Pwm Step-up Micropower Switching Regulator
• Manufacturer: ON Semiconductor

300
250
200
150
100
100
3.2
3.1
3.0
2.9
2.8
2.7
50
90
80
70
60
50
40
−50
0
−50
−50
Figure 18. NCP1400ASN30T1 Maximum Duty
Figure 14. NCP1400ASN30T1 Output Voltage
NCP1400ASN30T1
L = 10 mH
I
V
O
IN
NCP1400ASN30T1
V
Open−loop Test
NCP1400ASN30T1
V
Open−loop Test
Figure 16. NCP1400ASN30T1 Oscillator
= 4.0 mA
OUT
OUT
= 1.2 V
−25
−25
−25
= 3.0 V x 0.96
T
= 3.0 V x 0.96
T
T
A
A
A
Frequency vs. Temperature
, AMBIENT TEMPERATURE (°C)
, AMBIENT TEMPERATURE (°C)
, AMBIENT TEMPERATURE (°C)
Cycle vs. Temperature
0
0
0
vs. Temperature
25
25
25
50
50
50
75
75
75
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NCP1400A
100
100
100
7
300
250
200
150
100
100
5.1
5.0
4.9
4.8
4.7
4.6
50
90
80
70
60
50
40
−50
0
−50
−50
Figure 19. NCP1400ASN50T1 Maximum Duty
NCP1400ASN50T1
L = 10 mH
I
V
O
Figure 15. NCP1400ASN50T1 Output Voltage
IN
NCP1400ASN50T1
V
Open−loop Test
NCP1400ASN50T1
V
Open−loop Test
= 4.0 mA
Figure 17. NCP1400ASN50T1 Oscillator
OUT
OUT
= 1.2 V
−25
−25
−25
= 5.0 V x 0.96
= 5.0 V x 0.96
T
T
T
A
Frequency vs. Temperature
A
A
, AMBIENT TEMPERATURE (°C)
, AMBIENT TEMPERATURE (°C)
, AMBIENT TEMPERATURE (°C)
Cycle vs. Temperature
0
0
0
vs. Temperature
25
25
25
50
50
50
75
75
75
100
100
100