ST L4954 handbook
Contents
1. 0016036 J Doc ID 17719 Rev 1 11 13 Revision history L4954 5 12 13 Revision history Table 5 Document revision history Date Revision Changes 12 Jul 2010 1 Initial release Doc ID 17719 Rev 1 L4954 Please Read Carefully Information in this document is provided solely in connection with ST products STMicroelectronics NV and its subsidiaries ST reserve the right to make changes corrections modifications or improvements to this document and the products and services described herein at any time without notice All ST products are sold pursuant to ST s terms and conditions of sale Purchasers are solely responsible for the choice selection and use of the ST products and services described herein and ST assumes no liability whatsoever relating to the choice selection or use of the ST products and services described herein No license express or implied by estoppel or otherwise to any intellectual property rights is granted under this document If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein UNLESS OTHERWISE SET FO2. Vouts s 1 V T V louts 5 175mA i y Doc ID 17719 Rev 1 7 13 Electrical specifications L4954 Table 4 Electrical characteristics continued Symbol Parameter Test condition Min Typ Max Unit louts 5 5mA 7 mA lao Reg 2 quiescent current louts 5 175mA 7 mA lime Current limit 300 mA 5 V 650 mA reg 3 output Vouts Output voltage louts 650 mA 5 V AVline Line regulation Vs 7 to 26 V 2 mV AVigag Load regulation lours 5 to 650mA 9 mV Ve V 3V s Vours 0 3 300 400 mv lours 5 mA VpRoPOUT Dropout voltage Vs Vours 1V 1 14 V louts 650mA i louts 5mA 7 mA las Reg 3 quiescent current louTs 650 mA 7 mA liim Current limit 1 25 A f 2 0 12 to 10 kHz SVR3 Reg3 supply voltage rejection j 55 dB 9 PPly 9 louts 325 mA Vnip 1 Vpp 5V 100 mA standby reg 4 output VouTSSTBY Output voltage loUTSSTBY 100 mA 5 V AV line Line regulation Vs 7 to 26 V 0 8 mV AVioad Load regulation lout 0 5 to 100 mA 3 5 mV n M 0 1 V loutsstBY p 100 200 mV Vpropout Dropout voltage Vs Vngassrav 9 5 V loutsstBY g 500 600 mV 100 mA lOUTSSTBY 2mA 0 25 mA laa Reg 4 quiescent current louTssTBY 100 mA 0 35 mA lima Current limit 190 mA s f 2 0 12 to 10 kHz SVR4 Reg 4 supply voltage rejection 55 dB i 356g loutssTBY 50 mA Vgip 1 Vpp 2 A HSD1 Maximum output
3. ky L4954 Quad multifunction voltage regulator for car radio Features 4 regulators 10V 40 mA low dropout 8 5 V 175 mA 5V 650 mA 5 V 100 mA standby 3 high side drivers 2A HSD1 0 3 A HSD2 amp HSD3 No external charge pump capacitors are required Standby mode controlled by 3 input pins EN1 for REG1 REG2 REG3 and HSD1 EN2 for HSD2 ENG for HSD3 Individual thermal shutdown Multiwatt15 Description L4954 is a quad output voltage regulator and a three output high side driver m Logic outputs for supply undervoltage The IC includes monitoring circuitry to warn the LVWARN microprocessor of a low voltage condition the Reset LVWarn output sensing the slow dropping of m Independent current limiting STCAP pins voltage gives the microprocessor time to store data m Overvoltage shutdown P A reset output is generated at REG4 s decay m Shortcircuit protection m Load dump protection and overvoltage External protection must be provided for reverse battery protection m Shutdown Table 1 Device summary Order code Package Packing L4954 Multiwatt15 Tube July 2010 Doc ID 17719 Rev 1 1 13 www st com Contents L4954 Contents 1 Block and pins connection diagrams eens 5 2 Electrical specifications llllleseeeeeeee 6 2 1 Absolute maximum ratings llle eee 6 2 2 The
4. Application circuit Vg 14 4 V Tamb 25 C loyr49 5 mA Iouts s 5 mA louTs 5 mA louts ST BY 0 5 mA Rusp1 1690 Rusp2 3 107 O unless otherwise specified Table 4 Electrical characteristics Symbol Parameter Test condition Min Typ Max Unit Vs Operating supply voltage 11 16 V lourto 40 mA loyrg s 175 mA ly Maximum quiescent current lours 650 mA 10 mA loutsst By 100mA Rugp 8 9 Rusp23 53 Q EN1 EN2 EN3 0 p 420 mA lours sr gv 50 mA lasrpv Standby quiescent current EN1 EN2 EN3 0 300 mA louts sT BY 2 mA EN1 EN2 EN3 input low VENL voltage 0 0 8 V EN1 EN2 ENS input high VENH voltage outputs active d 10 V 40 mA reg 1 output Voutio Output voltage loutio 40 mA 10 V AV line Line regulation Vs 11 to 26 V 2 x mV AVioad Load regulation lour10 5 to 40 mA 2 mV Vs Vourio 0 1 V 100 200 mv lourio 5 mA VpnoPour Dropout voltage vem MAY S VouTio 9 E lourio 40 mA 500 600 mV louT10 5 mA i 7 mA lei Reg 1 quiescent current louT10 40 mA 7 mA llim1 Current limit 100 mA f 2 0 12 to 10 kHz loutio 25 E T SVR1 Reg 1 supply voltage rejection mA Vgip 1 Vpp 55 dB 8 5V 175 mA reg 2 output Vouts 5 Output voltage louts 5 175 mA 8 5 V AV line Line regulation Vg 11 to 26 V 2 mV AVioaa Load regulation louts 5 5 to 175 mA 10 mV Vs Vourss s Ud V 300 400 mV louts 5 5 mA VpROPOUT Dropout voltage Vs
5. current Vsatpeak saturation voltage Puspr e 99 699 my la Quiescent current 9 mA lim Current limit Rusp1 0 5 Q 3 5 A lieaki Output leakage current All driver outputs are off 20 mA 8 13 Doc ID 17719 Rev 1 q L4954 Electrical specifications Table 4 Electrical characteristics continued Symbol Parameter Test condition Min Typ Max Unit 0 3 A HSD2 amp HSD3 Maximum output current _ i Vsat saturation voltage Rrsp2 s 530 150 my lg Quiescent current 1 5 mA llim Current limit Ruspa3 0 5 Q 500 mA lieak2 3 Output leakage current All driver outputs are off 10 pA A f 2 0 12 to 10 kHz SVR2 Reg 1supply voltage rejection 55 dB Fe ee loura s 100 mA Vgip 1Vpp LVWARN OUTPUT THiyw _ LVW threshold on STCAP 7 5 V STCAP lt 7 5 V Vy z 0 0 0 4 V Vivw LVW output voltage STCAP gt 7 5V Vp 1 2 75 5 trise LVW output rise time 3 9 ms Clyw 0 1 UF trai LVW output fall time 12 6 us Reset output Tures Reset threshold on reg 4 4 5 V Set YS 90 that VOUT5STBY lt 4 5 V 0 0 4 V Vip 7 0 VnEs Reset output voltage Set Vg so that Voytsetpy is not less than normal reg 4 output 2 75 5 V voltage Vii 1 trise Reset output rise time 4 5 ms Cneser 0 1 UF trai Reset output fall time 37 us ky Doc ID 17719 Rev 1 9 13 Func
6. All rights reserved STMicroelectronics group of companies Australia Belgium Brazil Canada China Czech Republic Finland France Germany Hong Kong India Israel Italy Japan Malaysia Malta Morocco Philippines Singapore Spain Sweden Switzerland United Kingdom United States of America www st com ki Doc ID 17719 Rev 1 13 13
7. HUTDOWN HSD2 EN3 GND HSD3 D95AU346 Figure 2 Pins connection diagram top view 10V REG1 8 5V REG2 5V REG3 EN3 EN2 EN1 RESET 8 GND 7 LVWarn 6 5V REG4 STBY 5 ST CAP 4 HSD3 0 3A 3 HSD2 0 3A 2 Vs 1 HSD1 2A A TAB CONNECTED TO PIN 8 D95AU347 Doc ID 17719 Rev 1 5 13 Electrical specifications L4954 2 2 1 2 2 2 3 6 13 Electrical specifications Absolute maximum ratings Table 2 Absolute maximum ratings Symbol Parameter Value Unit Vs DC operating supply voltage 0 6 to 26 5 V Vs Transient supply overvoltages rise time 10 ms delay 34 v time 115 ms Vs ovs Overvoltage shutdown 27 V Vin Input voltages EN1 EN2 EN3 0 6 to 6 0 V Vout Output voltages LVWarn RESET 0 6 to 6 0 V Top Operating temperature range 40 to 85 C Tstg Storage temperature range 40 to 150 C Thermal data Table 3 Thermal data Symbol Parameter Value Unit Rthj case Thermal resistance junction to case 2 C W Application circuit Figure 3 Application circuit 10V REG1 EN1 EN2 8 5V REG2 EN3 HSD1 5V REG3 HSD2 5V REG4 STBY HSD3 LVWarn STCAP RESET 4704F zz D95AU348C ESR of output capacitors should be between 0 29 to 5 09 4 Doc ID 17719 Rev 1 L4954 Electrical specifications 2 4 Electrical characteristics Refer to the Figure 3
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9. d HSD3 are controlled by EN2 and ENG respectively a low on the control input turns the corresponding high side driver off Figure 4 Timing diagram TIME TIME TIME D95AU349A Doc ID 17719 Rev 1 ky L4954 Package information Package information In order to meet environmental requirements ST offers these devices in different grades of ECOPACK packages depending on their level of environmental compliance ECOPACK specifications grade definitions and product status are available at www st com ECOPACK is an ST trademark Figure 5 Multiwatt15 mechanical data and package dimensions mm inch DIM MIN TYP MAX MIN TYP MAX 0 197 2 65 0 104 1 6 0 063 1 0 039 0 49 0 55 0 019 0 022 0 66 0 75 0 026 0 030 1 02 1 27 1 52 0 040 0 050 0 060 17 58 17 78 18 03 0 690 0 700 0 710 19 6 0 772 20 2 0 795 21 9 22 2 22 5 0 862 0 874 0 886 21 7 22 1 22 5 0 854 0 87 0 886 17 65 18 1 0 695 0 713 17 25 17 5 17 75 0 679 0 689 0 699 L4 10 3 10 7 10 9 0 406 0 421 0 429 L7 2 65 2 9 0 104 0 114 M 4 25 4 55 4 85 0 167 0 179 0 191 M1 4 73 5 08 5 43 0 186 0 200 0 214 S 1 9 2 6 0 075 0 102 1 1 9 2 6 0 075 0 102 Dia1 3 65 3 85 0 144 0 152 OUTLINE AND MECHANICAL DATA Multiwatt15 vertical
10. rmal data lees 6 2 3 Application circuit anaana eR RES cn io Er dE EG e ERR news 6 2 4 Electrical characteristics 2 2 2 0 00 cece ees 7 3 Functional description 000 cee ee eee 10 4 Package information ccccc cece eee eed cede ee ee eee eee ee 11 5 Revision history ues saw WR OS OSRCRCRCA CR COP CN wee tea ede wes 12 2 13 Doc ID 17719 Rev 1 ky L4954 List of tables List of tables Table 1 Device SUMMANw 2 iussi nane xdi aspe ea Draco ma Rehd ee don ade E edd eae de vos 1 Table 2 Absolute maximum ratings 6 2 0 ec nh 6 Table 3 Thermal data uus sa esee par HR aae a REPRE GE a Roe tle doe MEER eol RO GN 6 Table 4 Electrical characteristics llle 7 Table 5 Document revision history Ly Doc ID 17719 Rev 1 3 13 List of figures L4954 List of figures Figure 1 Block diagram uses emm Rum n emde d bench aded e unen ex ea 5 Figure 2 Pins connection diagram top view liliis 5 Figure 3 X Application circuit 2 A Itn 6 Figure4 Timing diagram lsslelseeeee RR IRI I Hr 10 Figure 5 Multiwatt15 mechanical data and package dimensions lllsl eile 11 4 13 Doc ID 17719 Rev 1 ky L4954 Block and pins connection diagrams q Block and pins connection diagrams Figure 1 Block diagram V S 10V REG1 STCAP 8 5V REG2 5V REG3 RESET 5V REG4 STBY LVWarn OUTPUT HSD1 EN1 CONTROL THERMAL EN2 S
11. tional description L4954 3 10 13 Functional description The L4954 includes a monitoring circuit to warn the microprocessor if a low voltage or no voltage condition is occurring When the voltage on the STCAP pin drops below 7 5 V typ the LVW output goes low This tells the microprocessor to stop executing code and save vital information The reset output goes low when REG4 5 V standby drops below Vggg4 250 mV or 4 75 V is minimum value The RESET output doesn t go above 0 4V until REG4 has gone back above 4 75 V min Any spike tells the microprocessor to start operating Once the STCAP line passes 7 5 V typ the LVWarn output also returns to high state The STCAP pin acts like a delay circuit Due to the large capacitor 470 uF the STCAP pin allows the battery voltage to decay slowly giving the microprocessor time to store data Also during short low voltage or negative voltage conditions the STCAP pin protects the 5 V standby output from dropping below the RESET and LVW trip points The four outputs are expected to follow the battery voltage down to 11 V for REG1 9 V for REG2 6 V for REGS3 and REG4 The L4954 has a standby mode to keep the microprocessor and memories alive during ignition off conditions The EN1 input pin is controlled by the microprocessor A high on the EN1 input turns on REG1 REG2 REG3 and HSD1 A Low on EN1 places the part in stand by mode with REG4 on The high side driver outputs HSD2 an
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ST L4954 handbook