NCP1560(2003) 데이터 시트보기 (PDF) - ON Semiconductor

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NCP1560
(Rev.:2003)

Full Featured Voltage Mode PWM Controller

ON Semiconductor 

NCP1560

1

Vin

13.8 mA

Disable

VAUX

16

VAUX

CAUX

14

GND

+

11 V/7 V

-

Vin

+

+

1.49 V

-

-

2

Disable_VREF

One Shot

Pulse

(250 ns)

S

Q

Monotonic

Start

Latch

(Reset

Dominant)

R

5.0 V Reference

DIS

VREF

11

Disable_VREF

RD

UV/OV

+

-

+

3.6 V-

VREF

CSKIP 11 mA

Disable -

+

6

CCSKIP

5

CS

-

+

+

One Shot

2V

-

Pulse

(600 ns)

+

-

+

0.6 V

-

Clock

STOP

Disable_ss

S

Q

Output

Latch

(Reset

Dominant)

R

Delay

Logic

12

tD

DIS 15

OUT1

VAUX

DIS

13

OUT2

VAUX

9

SS

CSS

7

RT

RT

Vin

RFF 4

FF

VREF

+

+-

0.5 V

-

Disable_ss

Soft Start

- + Comparator

CURRENT MIRROR

I1

I1

2

Oscillator Ramp

2V

STOP

10 pF

+

1.3 V*

-

* Trimmed during

manufacturing to obtain

1.3 V with RT = 101 kW

+

2V

-

Clock

5.3 kW

+

IFF 6.7 kW V

-

I

+

V

125 kW

+

-

One Shot

Pulse

FF Ramp

(Adjustable)

+

-

+

2V

-

PWM

Comparator

+-

10

VEA

2 kW

20 kW

Max DC

+ - Comparator

2V

40 kW

+

32 kW

VDC(inv)

-

27 kW

VREF

RMDP

8

DCMAX

RP

10 pF CFF

Figure 2. NCP1560 Functional Block Diagram

http://onsemi.com

3

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