TDA3681 Ver la hoja de datos (PDF) - Philips Electronics

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TDA3681

Multiple voltage regulator with switch and ignition buffer

Philips Electronics 

Philips Semiconductors

Multiple voltage regulator with switch and

ignition buffer

TEST AND APPLICATION INFORMATION

Test information

Product specification

TDA3681

handbook, full pagewidth

VP1

VENSW

VEN1/3

VEN4

VP2

VBU

VIGNIN

supply voltage 1

17

C1 (1)

220 nF

enable input power switch

11

enable input regulator 1/3

10

enable input regulator 4

9

power switch output

16

C2

10 µF

regulator 2

output

15

5V

C3

10 µF

regulator 1

output

1

8.5 V

C4

10 µF

regulator 3

output

2

5V

C5

10 µF

supply voltage 2

3

C7 (1)

220 nF

regulator 4

TDA3681J

output

TDA3681JR 4

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

8

C8

47 nF

(2)

R6

10 kΩ

backup

14

C10

100 µF

ignition input

5

C11

1 nF

reset

output

7

hold output

12

ignition output

6

13

ground

(3)

R3

10 kΩ

(3)

C9

50 pF

C12

50 pF

MGL911

(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.10 Test circuit of TDA3681J and TDA3681JR.

2002 Apr 10

19

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