TDA3681 View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

TDA3681

Multiple voltage regulator with switch and ignition buffer

Philips Electronics 

Philips Semiconductors

Multiple voltage regulator with switch and

ignition buffer

Product specification

TDA3681

handbook, full pagewidth

VP1

VENSW

VEN1/3

VEN4

VP2

VBU

VIGNIN

supply voltage 1

14

C1 (1)

220 nF

enable input power switch

8

enable input regulator 1/3

7

enable input regulator 4

6

power switch output

16

C2

10 µF

regulator 2

output

12

5V

C3

10 µF

regulator 1

output

17

8.5 V

C4

10 µF

regulator 3

output

19

5V

C5

10 µF

TDA3681TH

supply voltage 2

20

C7

220 nF

(1)

regulator 4

output

1

3.3 V

C6

10 µF

RL(SW)

12 kΩ

RL(REG2)

5 kΩ

RL(REG1)

10 kΩ

RL(REG3)

5 kΩ

RL(REG4)

5 kΩ

reset delay

capacitor

5

C8

47 nF

(2)

R6

10 kΩ

backup

13

C10

100 µF

ignition input

2

C11

1 nF

11

heat tab

reset

output

4

hold output

9

ignition output

3

10

ground

(3)

R3

10 kΩ

C9

50 pF

(3) C12

50 pF

MGU355

(1) A minimum capacitor of 220 nF on the supply lines VP1 and VP2 is required for stability.

(2) A minimum capacitor of 1 µF for backup supply is required for stability.

(3) Capacitor represents the typical input capacitance of CMOS logic connected to the reset and hold outputs.

Fig.11 Test circuit of TDA3681TH.

2002 Apr 10

20

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