NCP1205P2G datasheet(7/17 Pages) ONSEMI

Part #	NCP1205P2G

Description	Single Ended PWM Controller Featuring QR Operation and Soft Frequency Foldback

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Manufacturer	ONSEMI [ON Semiconductor]

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NCP1205

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7

ELECTRICAL CHARACTERISTICS (continued) (For typical values TA = 25°C, for min/max values TJ = 25°C to +125°C,

Max TJ = 150°C, VCC = 12 V unless otherwise noted.)

Characteristics

Pin No.

Symbol

Min

Typ

Max

Unit

PDIP−8 PDIP−14 SOIC−16

Current Sense Comparator (continued)

Propagation Delay from Current Detection to Gate OFF

State

6

11

12

Tdel

−

200

250

ns

Leading Edge Blanking (LEB)

6

11

12

Tleb

−

200

−

ns

Frequency Modulator

Minimum Frequency Operation @ Ct = 1.0 ηF and

VCC = 30 V

4

5

6

Fmin

−

0

−

kHz

Maximum Frequency Operation @ Ct = 1.0 ηF and

VCC = 30 V

4

5

6

Fmax

90

110

125

kHz

Minimum Ct Charging Current (Note 4)

4

5

6

ICtmin

−

0

−

mA

Maximum Ct Charging Current (Note 4)

4

5

6

ICtmax

280

350

420

mA

Discharge Time @ Ct = 1.0 ηF

4

5

6

−

500

−

ns

Drive Output

Output Voltage Rise Time @ CL = 1.0 ηF (DV = 10 V)

7

12

13

tr

−

30

50

ns

Output Voltage Fall Time @ CL = 1.0 ηF (DV = 10 V)

7

12

13

tf

−

30

50

ns

Clamped Output Voltage @ VCC = 30 V (Note 5)

7

12

13

VDRV

11

13

16

V

Voltage Drop on the Stage @ VCC = 10 V (Note 5)

12

VDRV

−

0.5

V

Undervoltage Lockout

Startup Threshold (VCC Increasing)

8

13

14

UVLOH

13.5

15

16.5

V

Minimum Operating Voltage (VCC Decreasing)

8

13

14

UVLOL

6.5

7.2

8.0

V

Startup Current Source

Maximum Voltage, Pin 1 Grounded

1

−

450

−

V

Maximum Voltage, Pin 1 Decoupled (470 mF)

1

−

500

−

V

Startup Current Source Flowing through Pin 1

1

−

2.3

3.0

4.8

mA

Leakage Current in Offstate @ Vpin 1 = 500 V

1

−

32

70

mA

Device Current Consumption

VCC less than UVLOH

8

13

14

−

1.5

1.8

mA

VCC = 30 V and Fsw = 2.0 kHz, CL = 1.0 ηF

8

13

14

−

1.2

3.0

mA

VCC = 30 V and Fsw = 125 kHz, CL = 1.0 ηF

8

13

14

−

3.0

4.0

mA

Startup Current to VCC Capacitor

8

13

14

−

1.4

−

mA

4. Typical capacitor swing is between 0.5 V and 3.5 V.

5. Guaranteed by design, TJ = 25°C.

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