NCP1280_05 datasheet(2/18 Pages) ONSEMI

부품명	NCP1280

상세설명	Active Clamp Voltage Mode PWM Controller for Off-Line Applications

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Figure 2. NCP1280 Functional Block Diagram

+

−

+

5.0 V Reference

Vin

GND

VEA

Delay

Logic

OUT1

−

+

−

+

−

+

CS

S

R

Q

CSS

10

5

14

16

1

11

12

RD

STOP

Vin

Disable

CCSKIP

Clock

Disable_ss

S

R

Q

Monotonic

Start

(250 ns)

Disable_ss

CAUX

DIS

VAUX

OUT2

VAUX

15

13

VAUX

10 pF

FF Ramp

(Adjustable)

* Trimmed during

manufacturing to obtain

1.3 V with RT = 101 kW

Vin

RFF

FF

4

+

CURRENT MIRROR

−

+

RT

2 V

10 pF

I1

+

−

2 V

7

Oscillator Ramp

2 V

+

−

DIS

8

+ −

2 V

Max DC

Comparator

PWM

Comparator

+

−

Soft Start

Comparator

0.5 V

+

−

0.6 V

+

−

SS

9

One Shot

Pulse

−

+

6

CSKIP

3.6 V

1.49 V

3

UV/OV

−

+

2 V

+

−

One Shot

Pulse

+

−

+

−

I1

2

+

−

1.3 V*

VREF

tD

−

20 k

W

40 k

W

VREF

DCMAX

2 k

W

32 k

W

27 k

W

5.3 k

W

6.7 k

W

+

VDC(inv)

−

RMDP

RP

CFF

Disable_VREF

IFF

Disable

11

mA

+

V

−

+

I

+

V

125 k

W

RT

(600 ns)

One Shot

Pulse

Clock

VREF

Output

Latch

(Reset

Dominant)

Latch

(Reset

Dominant)

ISTART

VAUX(ON)/VAUX(OFF)

6

mA

유사한 부품 번호 - NCP1280_05

제조업체	부품명	데이터시트	상세설명
ON Semiconductor	NCP1280DR2	129Kb / 18P	Active Clamp Voltage Mode PWM Controller for Off-Line Applications April, 2004 ??Rev. 1

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유사한 설명 - NCP1280_05

제조업체	부품명	데이터시트	상세설명
ON Semiconductor	NCP1280	129Kb / 18P	Active Clamp Voltage Mode PWM Controller for Off-Line Applications April, 2004 ??Rev. 1
Texas Instruments	LM5025	1Mb / 32P	[Old version datasheet] Active Clamp Voltage Mode PWM Controller
	LM5025A	1Mb / 23P	[Old version datasheet] Active Clamp Voltage Mode PWM Controller
	LM5025D	709Kb / 31P	[Old version datasheet] Active Clamp Voltage Mode PWM Controller
	LM5025B	1Mb / 24P	[Old version datasheet] Active Clamp Voltage Mode PWM Controller
National Semiconductor ...	LM5025C	378Kb / 16P	Active Clamp Voltage Mode PWM Controller
Texas Instruments	LM5025A	1Mb / 23P	[Old version datasheet] Active Clamp Voltage Mode PWM Controller
National Semiconductor ...	LM5025B	708Kb / 16P	Active Clamp Voltage Mode PWM Controller
	LM5025A	698Kb / 16P	Active Clamp Voltage Mode PWM Controller
	LM5025	316Kb / 16P	Active Clamp Voltage Mode PWM Controller

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NCP1280 데이터시트(PDF) 2 Page - ON Semiconductor

NCP1280 데이터시트(HTML) 2 Page - ON Semiconductor

유사한 부품 번호 - NCP1280_05

유사한 설명 - NCP1280_05

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