TDA4700 datasheet(11/21 Pages) SIEMENS

Part #	TDA4700

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

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Manufacturer	SIEMENS [Siemens Semiconductor Group]

Direct Link	http://www.siemens.com/

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11 / 21 page

TDA 4700

TDA 4718

Semiconductor Group

11

Absolute Maximum Ratings

Parameter

Symbol

Limit Values

Unit

Test

Condition

min.

max.

Supply voltage

Voltage at Q1, Q2

V

S

V

Q

– 0.3

33

V

Q1, Q2 high

Current at Q1, Q2

I

Q

70

mA

Q1, Q2 low

Symmetry 1, 2 TDA 4700; A

V

SYM

– 0.3

33

V

Sync output

V

SYNC Q

I

SYNC Q

– 0.3

0

7

10

V

mA

SYNC Q high

SYNC Q low

Sync input

Input

C

filter

Input

R

T

Input

C

T

Input

R

Input

C

R

Input comparator

K2, K5, K6, K7

V

SYNC I

V

I Cf

V

IRT

V

ICT

V

IRR

I

ICR

V

I K

– 0.3

–10

– 0.3

33

7

10

33

V

mA

V

Output K5

V

Q K5

– 0.3

33

V

Input op amp

TDA 4700; A

V

I Op Amp

– 0.3

33

V

Output op amp TDA 4700; A

V

Q Op Amp

– 0.3

V

S –1

max. 7

V

Reference voltage

V

REF

– 0.3

V

REF

V

Input

C

soft start

V

I soft start

– 0.3

7

V

Junction temperature

Storage temperature

T

j

T

stg

–55

150

125

°C

Thermal resistance

system - air

TDA 4700; A

TDA 4718

TDA 4718 A

R

th SA

R

th SA

R

th SA

65

70

60

K/W

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TDA4700 Datasheet(PDF) 11 Page - Siemens Semiconductor Group

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