tda3681 NXP Semiconductors, tda3681 Datasheet
tda3681
Available stocks
Related parts for tda3681
tda3681 Summary of contents
Page 1
... DATA SHEET TDA3681 Multiple voltage regulator with switch and ignition buffer Product specification Supersedes data of 2002 Apr 10 INTEGRATED CIRCUITS 2004 Mar 31 ...
Page 2
... The regulator outputs and the power switch are DC short-circuit safe to ground and supply (V GENERAL DESCRIPTION The TDA3681 is a multiple output voltage regulator with a power switch and an ignition buffer intended for use in car radios with or without a microcontroller. The TDA3681 contains the following: Four fixed voltage regulators with a foldback current protection (regulators and 4) ...
Page 3
... REG1 300 mA 14.4 V REG2 1400 mA 14.4 V REG3 14.4 V REG4 Product specification TDA3681 MIN. TYP. MAX. UNIT 9 6.5 14 ...
Page 4
... POWER SWITCH & BACKUP SWITCH BACKUP CONTROL REGULATOR 2 REGULATOR 4 & REGULATOR 3 & TDA3681JR REGULATOR 1 & OR & IGNITION BUFFER 13 GND Fig.1 Block diagram of TDA3681J and TDA3681JR TEMPERATURE LOAD DUMP PROTECTION (14 V/ 100 mA 300 mA ...
Page 5
... TEMPERATURE & LOAD DUMP PROTECTION BACKUP SWITCH BACKUP CONTROL REGULATOR 2 REGULATOR 4 & REGULATOR 3 & TDA3681TH REGULATOR 1 & OR & IGNITION BUFFER 10 GND Fig.2 Block diagram of TDA3681TH. 5 Product specification TDA3681 ( (14 V/ 100 mA 300 mA) 12 REG2 (3 ...
Page 6
... Philips Semiconductors Multiple voltage regulator with switch and ignition buffer PINNING Pin description of TDA3681J and TDA3681JR SYMBOL PIN DESCRIPTION REG1 1 regulator 1 output REG3 2 regulator 3 output V 3 second supply voltage P2 REG4 4 regulator 4 output IGN 5 ignition input IN IGN 6 ignition output (active HIGH) OUT ...
Page 7
... Mar 31 handbook, halfpage REG3 19 n.c. 18 REG1 TDA3681TH n. REG2 12 HEATTAB 11 Fig.4 Pin configuration for TDA3681TH. 7 Product specification TDA3681 1 REG4 2 IGN IN 3 IGN OUT 4 RES 5 C RES 6 EN4 7 EN1/3 8 ENSW 9 HOLD 10 GND ...
Page 8
... Multiple voltage regulator with switch and ignition buffer FUNCTIONAL DESCRIPTION The TDA3681 is a multiple output voltage regulator with a power switch, intended for use in car radios with or without a microcontroller. Because of the low voltage operation of the car radio, low voltage drop regulators are used. ...
Page 9
... REGULATOR 1 output stage output of regulation detector OR REGULATOR 3 output stage output of regulation detector TEMPERATURE PROTECTION REGULATOR 4 Fig.5 Block diagram of the hold circuit. 9 Product specification TDA3681 & OR buffer POWER SWITCH LOAD DUMP FOLDBACK MODE MGL904 TDA3681 REG1 REG3 REG4 HOLD ...
Page 10
... C HIGH HOLD LOW Fig.6 Timing diagram of ignition Schmitt triggers and hold circuit. 2004 Mar 31 load dump Back-up Schmitt trigger and reset behaviour load dump Enable Schmitt trigger ignition Hold behaviour 10 Product specification TDA3681 mgl905 ...
Page 11
... V 3.3 V regulator 16 7.0 V 4.0 V enable 1.8 V power 1.3 V switch 16 V power switch output 0 V 2004 Mar 31 load dump V P and enable Schmitt trigger load dump Power switch behaviour Fig.7 Timing diagram of regulators and power switch. 11 Product specification TDA3681 MGL906 ...
Page 12
... Mar 31 CONDITIONS MIN. non-operating t 10 minutes t 50 ms non-operating t 10 minutes t 50 ms non-operating 55 operating 40 operating 40 CONDITIONS VALUE in free air 12 Product specification TDA3681 MAX. UNIT +150 C +85 C +150 C UNIT 1 ...
Page 13
... REG rising mA; 4.43 P1 REG2 note 3 V falling mA; 4.4 P1 REG2 note 3 V rising; note falling; note 3 7. Product specification TDA3681 MIN. TYP. MAX 105 145 110 150 7.0 7.5 4.5 5.0 2.5 1.8 2.4 1.3 1 ...
Page 14
... 2.5 1 nF; note 5 20 RES nF; note 6 8 RES 600 mA 8.0 REG1 9 8 600 mA REG1 14 Product specification TDA3681 MIN. TYP. MAX. V 0.15 V 0.075 V REG3 REG3 V 0.35 REG3 0.2 V 0.15 V 0.075 V REG4 REG4 V 0.3 REG4 0.15 9.7 10.3 9.4 9.8 0.3 0.1 5 400 900 7 50 ...
Page 15
... V V and/ 1400 mA REG3 I = 1400 mA REG3 kHz (p- 1400 REG3 P2 note 7 V > 4.5 V; note 8 1.5 REG3 R 0.5 ; note 9 430 L 15 Product specification TDA3681 MIN. TYP. MAX 0.4 0.7 1.2 800 5.0 5.25 5.0 5.25 5.0 5. 100 55 0.4 0.6 0.8 1.2 0.2 0.5 0.8 1.0 0.37 120 ...
Page 16
... P1 SW note 13 V & 100 mA P1 REG2 12 > 3 > 3 > 3 IGNIN IGNIN V V 100 V IGNIN 16 Product specification TDA3681 MIN. TYP. MAX. 1 400 3.3 3.46 3.3 3. 1.7 2.4 1.5 750 0.45 0.65 1.0 1.8 2.0 15.0 16 1.7 0.35 16 900 2.2 2.5 2.0 2.3 0.2 ...
Page 17
... V IGNIN V falling from 2.5 to 1.7 V IGNIN has exceeded 6 see Figs 10 and 11. L(REG2) drop for regulators 1 and 2. Regulators 3 and 4 drop as a result P1 t d(RES) t d(SW) and REGn Product specification TDA3681 MIN. TYP. MAX. 0 0.2 0.8 4.5 5.0 5.25 0.45 0.8 0.45 2.0 500 500 150 160 170 150 ...
Page 18
... I m(REG3) I REG3 Fig.8 Foldback current protection of the regulators 3.3 V delayed generates hold Fig.9 Current protection of the power switch. 18 Product specification 5 sc(REG2) b. Regulator 2. 3 sc(REG4) d. Regulator 4. MGR931 not delayed 1 TDA3681 MGL908 I m(REG2) I REG2 MGL910 I m(REG4) I REG4 ...
Page 19
... C10 100 F ignition input ignition output 5 6 C11 ground and V is required for stability Fig.10 Test circuit of TDA3681J and TDA3681JR. 19 Product specification TDA3681 C15 C2 100 C16 C3 100 8.5 V C17 C4 100 ...
Page 20
... C10 100 F ignition input ignition output 2 3 C11 heat tab ground and V is required for stability Fig.11 Test circuit of TDA3681TH. 20 Product specification TDA3681 C15 C2 100 C16 C3 100 8.5 V C17 C4 100 ...
Page 21
... Fig.13 Curve for selecting the value of the output the capacitor value is decreased to amb = 30 C; see Fig.12. amb = 30 C, the capacitor value is amb = 30 C. amb 14 ESR maximum ESR ( ) stable region minimum ESR capacitor for regulator 2. Product specification TDA3681 MGL913 100 ...
Page 22
... 24.0 20.0 12.2 10 2.54 1.27 5.08 23.6 19.6 11.8 REFERENCES JEDEC JEITA 22 non-concave view B: mounting base side 3.4 8.4 2.4 2.1 6 0.6 4.3 3.1 7.0 1.6 1.8 EUROPEAN PROJECTION Product specification TDA3681 SOT243 2.00 0.25 0.03 1.45 ISSUE DATE 99-12-17 03-03-12 ...
Page 23
... 20.0 12.2 10 2.54 1.27 5.08 19.6 11.8 REFERENCES JEDEC JEITA 23 non-concave view B: mounting base side 3.4 12.4 2.4 2.1 6 0.8 4.3 3.1 11.0 1.6 1.8 EUROPEAN PROJECTION Product specification TDA3681 SOT475 ( 2.00 0.4 0.03 1.45 ISSUE DATE 99-12-17 03-03-12 ...
Page 24
... scale (2) ( 0.32 16.0 13.0 1.1 11.1 6.2 2.9 0.23 15.8 12.6 0.9 10.9 5.8 2.5 REFERENCES JEDEC JEITA 24 Product specification detail 14.5 1.1 1.7 1.27 0.25 0.25 0.03 13.9 0.8 1.5 EUROPEAN PROJECTION TDA3681 SOT418 2.5 0.07 0 2.0 ISSUE DATE 02-02-12 03-07-23 ...
Page 25
... To overcome these problems the double-wave soldering method was specifically developed. 25 Product specification TDA3681 2 350 mm so called thick/large packages called small/thin packages. ...
Page 26
... Use a low voltage ( less) soldering iron applied to the flat part of the lead. Contact time must be limited to 10 seconds 300 C. When using a dedicated tool, all other leads can be soldered in one operation within seconds between 270 and 320 C. 26 Product specification TDA3681 ...
Page 27
... The appropriate soldering profile can be provided on request. 2004 Mar 31 (1) PACKAGE (5) , LBGA, LFBGA, SQFP, , TFBGA, USON, VFBGA (11) (10) (11) , PMFP , WQCCN32L 27 Product specification TDA3681 SOLDERING METHOD WAVE REFLOW suitable (3) suitable not suitable not suitable not suitable suitable (6) not suitable suitable ...
Page 28
... Product specification TDA3681 DEFINITION These products are not Philips Semiconductors ...
Page 29
Philips Semiconductors – a worldwide company Contact information For additional information please visit http://www.semiconductors.philips.com. For sales offices addresses send e-mail to: sales.addresses@www.semiconductors.philips.com. © Koninklijke Philips Electronics N.V. 2004 All rights are reserved. Reproduction in whole or in part is prohibited ...