TDA16846 datasheet(6/28 Pages) INFINEON

No de pièce	TDA16846

Description	ICs for Consumer Electronics

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Fabricant	INFINEON [Infineon Technologies AG]

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TDA 16846

TDA 16847

Data Sheet

6

2000-01-14

1.5

Block Diagrams

Figure 2

TDA 16846

AEB02648

-

+

4

R

D4

R7

5 V

30 k

Ω

R8

75 k

Ω

R3

15 k

Ω

Control Voltage

KSY

PVA

1.5 V

6

R

6

R

D5

Fold Back Point Correction

1 V

Voltage

Check

-

+

CC

V

1.2 V

1

&

Off Time

Comparator

2 V

Limit

G1

3.5 V

-

+

D2

Error

Amplifier

R2

5 V

D3

Control Voltage

-

+

Buffer for

5 V

-

+

Comparator

Overvoltage

1

R

20 k

Ω

< 25 mV

1.5 V

I

ED1

16 V

Comparator

On Time

D1

Startup

G4

1

Q

S

R

ED2

Error-

Flipflop

On Time

Flipflop

R

S

Q

G2

Voltage

Comparator

-

+

15/8 V

Zero Crossing

Signal

&

Output

Driver

Primary

FC1

1 V

7

1

SYN

OTC

RZI

3

4

SRC

5

OCI

PCS

2

14

GND

12

CC

V

10

FC1

13

OUT

6

FC2

REF

9

N.C.

8

11

PVC

x 1/3

1

Diode

Supply

The input with the lower voltage becomes operative

1)

FC2

+

G3

CS1

RSTC/RSTF

3.5 V

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