TDA4700 데이터 시트보기 (PDF) - Siemens AG

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TDA4700

Control IC for Single-Ended and Push-Pull Switched-Mode Power Supplies SMPS

Siemens AG 

Pin Definitions and Functions (TDA 4700)

Pin

Symbol

Function

1

GND

Ground 0 V

2

+ VREF

3

+ VS

4

Q2

5

Q1

Reference voltage

Supply voltage

Output Q2

Output Q1

6

I SYM Q2

Symmetry Q2

7

Q SYNC

Sync. output

8

Csoft start

Soft start

9

RT

10

Cfilter

11

CT

VCO RT

Capacitance

VCO CT

12

RR

13

CR

Ramp generator RR

Ramp generator CR

14

I COMP

Comparator input

15

Q Op Amp

Operational amplifier output

16

– I Op Amp

Operational amplifier input (–)

17

+ I Op Amp

Operational amplifier input (+)

18

I SYNC

Sync. input

19

ON/OFF/IUV

ON/OFF, undervoltage

20

QOV

21

IOV

Overvoltage output

Overvoltage input

22

– IDYN

Dynamic current limitation (–)

23

+ IDYN

Dynamic current limitation (+)

24

I SYM Q1

Symmetry

TDA 4700

TDA 4718

Semiconductor Group

3

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