NCP1271 datasheet(9/19 Pages) ONSEMI

Part #	NCP1271

Description	Soft?뭆kip Mode Standby PWM Controller with Adjustable Skip Level and External Latch

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Manufacturer	ONSEMI [ON Semiconductor]

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NCP1271

http://onsemi.com

9

TYPICAL CHARACTERISTICS

Figure 17. High Voltage Startup Current vs.

Temperature

Figure 18. Startup Current vs. VCC Voltage

TEMPERATURE (°C)

VCC, SUPPLY VOLTAGE (V)

125

100

75

50

25

0

−50

3.5

3.6

3.7

3.8

3.9

4.0

4.1

12

10

8

6

4

0

1

2

3

4

5

6

Figure 19. Startup Leakage Current vs.

Temperature

Figure 20. Minimum Startup Voltage vs.

Temperature

TEMPERATURE (°C)

125

100

75

50

25

0

−50

15

17

19

21

23

25

125

100

75

50

25

0

−50

0

2

4

6

8

Figure 21. Supply Voltage Thresholds vs.

Temperature

TEMPERATURE (°C)

125

100

75

50

25

0

−50

0

0.5

1.0

1.5

2.0

2.5

−25

2

−25

VCC(reset)

VCC(on)

4.2

4.3

4.4

4.5

16

18

20

22

24

10

12

14

VCC(off)

VCC(latch)

VCC = VCC(on) − 0.2 V

3.0

3.5

Figure 22. Supply Currents vs. Temperature

TEMPERATURE (°C)

125

100

75

50

25

0

−50

0

5

10

15

20

25

30

−25

35

40

125°C

−40°C

25°C

ICC1 (100 kHz)

ICC2

ICC3

ICC1 (65 kHz)

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