NCP1217, NCP1217A

www.onsemi.com

5

Characteristic

Pin

Symbol

Min

Typ

Max

Unit

Internal Pull−Up Resistor

2

Rup

−

19

−

kW

Pin 2 (FB) to Internal Current Setpoint Division Ratio

−

Iratio

−

3.3

−

−

SKIP CYCLE GENERATION

Default Skip Mode Level

1

Vskip

0.93

1.1

1.26

V

Pin 1 Internal Output Impedance

1

Zout

−

27

−

kW

INTERNAL RAMP COMPENSATION

Internal Ramp Level @ 25°C (Note 3)

3

Vramp

2.6

2.9

3.2

V

Internal Ramp Resistance to CS Pin

3

Rramp

−

19

−

kW

ADJUSTMENT LATCHOFF LEVEL

Latching Level

1

Vlatch

2.69

3.10

3.42

V

Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product

performance may not be indicated by the Electrical Characteristics if operated under different conditions.

3. A 1.0 MW resistor is connected to the ground for the measurement.

TYPICAL CHARACTERISTICS

−50

60

50

20

0

0

TEMPERATURE (°C)

80

TEMPERATURE (°C)

10

40

50

150

1.8

Figure 3. High Voltage Pin Leakage Current vs.

Temperature

Figure 6. ICC 1.0 nF Load vs. Temperature

TEMPERATURE (°C)

2.2

1.0

2.4

100

−50

13.5

50

12.0

0

11.0

14.0

11.5

12.5

13.0

150

100

−50

50

0

7.0

9.0

TEMPERATURE (°C)

7.5

8.0

8.5

150

100

−50

50

0

150

100

1.4

1.6

2.0

1.2

70

30

65 kHz

100 kHz

133 kHz

2.8

3.0

2.6