TDA3681ATH datasheet(7/22 Pages) NXP

номер детали	TDA3681ATH

подробное описание детали	Multiple voltage regulator with switch and ignition buffer

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производитель	NXP [NXP Semiconductors]

домашняя страница	http://www.nxp.com

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7 / 22 page

2003 Aug 29

7

Philips Semiconductors

Product speciﬁcation

Multiple voltage regulator with

switch and ignition buffer

TDA3681A

During an overload condition or a short circuit

(VSW <VP − 3.7 V), the voltage on the reset delay

capacitor rises 0.6 V above the voltage of regulator 2. This

rise time depends on the capacitor connected to

pin CCRES. During this time, the power switch can deliver

more than 3 A. When regulator 2 is out of regulation and

generates a reset, the power switch can only deliver 2 A

and will immediately go into foldback protection.

At supply voltages > 17 V, the power switch is clamped at

16 V maximum (to avoid externally connected circuits

being damaged by an overvoltage) and the power switch

will switch off at load dump.

Interfacing with the microcontroller (simple full or semi

on/off logic applications) can be realized with an

independent ignition Schmitt trigger and ignition output

buffer (push-pull output).

The timing diagrams are illustrated in Figs 4 and 5.

The second supply voltage VP2 is used for the switchable

regulators 3 and 4. This input can be connected to a lower

supply voltage of

≥ 6 V to reduce the power dissipation of

the TDA3681A. A DC-to-DC converter could be used for

this purpose.

handbook, full pagewidth

VP1 = VP2

enable

regulator 1/3

regulator 1

enable

regulator 4

regulator 3

VP

enable

power

switch

power

switch

output

18 V

8.9 V

7.0 V

4.0 V

≥1.8 V

>1.8 V

<1.3 V

>1.8 V

<1.3 V

8.5 V

0 V

load dump

regulator 4

3.3 V

0 V

5.0 V

0 V

16.9 V

7.0 V

4.0 V

16 V

0 V

1.3 V

load dump

MGL906

Power switch behaviour

VP and enable Schmitt trigger

Fig.4 Timing diagram of regulators and power switch.

Аналогичный номер детали - TDA3681ATH

производитель	номер детали	датащи	подробное описание детали
NXP Semiconductors	TDA3681	162Kb / 28P	Multiple voltage regulator with switch and ignition buffer 2002 Apr 10
	TDA3681J	162Kb / 28P	Multiple voltage regulator with switch and ignition buffer 2002 Apr 10
	TDA3681JR	162Kb / 28P	Multiple voltage regulator with switch and ignition buffer 2002 Apr 10
	TDA3681TH	162Kb / 28P	Multiple voltage regulator with switch and ignition buffer 2002 Apr 10

More results

Аналогичное описание - TDA3681ATH

производитель	номер детали	датащи	подробное описание детали
NXP Semiconductors	TDA3681	162Kb / 28P	Multiple voltage regulator with switch and ignition buffer 2002 Apr 10
	TDA3618AJR	121Kb / 24P	Multiple voltage regulator with switch and ignition buffers 2001 May 02
	TDA3618JR	110Kb / 24P	Multiple voltage regulator with switch and ignition buffers 1999 Sep 01
	TDA3609JR	136Kb / 20P	Multiple voltage regulator with switch and ignition buffers 1997 Aug 15
	TDA3607	85Kb / 16P	Multiple voltage regulator with switch 1997 May 05
	TDA3608Q	123Kb / 20P	Multiple voltage regulator with switch 1997 Aug 14
	TDA3603	121Kb / 20P	Multiple voltage regulator with switch 1997 Aug 15
	TDA3605Q	122Kb / 16P	Multiple voltage regulator with switch 1997 Jul 09
	TDA3608THQ	122Kb / 22P	Multiple voltage regulators with switch 2003 Nov 28
	TDA3615J	113Kb / 18P	Multiple voltage regulator 2004 Jan 12

More results

TDA3681ATH датащи(PDF) 7 Page - NXP Semiconductors

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Аналогичный номер детали - TDA3681ATH

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