View L5955_5352152.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

august 2007 rev 1 1/17 17 L5955 multiple multifunction volt age regulator for car radio features 2 stand-by regulators: 3.3v (125ma) 1.5v (300ma) 6 regulators: 10v (40ma) 8.5v (200ma) 3.3v (850ma) 8/10v (1a) 5/3.3/1.8v (200ma) 1.8/2.5v(200ma) all regulators are low dropout outputs the different outputs voltage are controlled by i 2 c bus. reg3 on/off controlled by enable reg1, reg2, reg4, reg5, reg6 on/off controlled by i 2 cbus. 3 high side drivers: 2a (hsd1) 0.45a (hsd2 & hsd3) no external charge pump capacitors are required stand-by mode controlled by en pin for i 2 c bus and reg1, reg2, reg3, reg4, reg5, reg6, hsd1, hsd2, hsd3 lvw function externally selectable individual thermal shutdown independent current limiting short circuit protection load dump protection and overvoltage shutdown description the L5955 is an integration of three high side drivers, six regulators and two stand-by regulators with reset function developed to provide the power to a complete audio system. the outputs of the ic are controlled by i 2 c bus and enable pin. the device is equipped with sequencing and slew rate controls for the st-by regulators. flexiwatt27 table 1. device summary order code package packing L5955 flexiwatt27 tube www.st.com
contents L5955 2/17 contents 1 block and pin connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 electrical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.3 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.1 write mode: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.2 chip address byte: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.3 data byte: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 5 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
L5955 block and pin connection diagrams 3/17 1 block and pin connection diagrams figure 1. block diagram figure 2. pin connection (top view) st-by reg 3.3v st_by reg 1.5v 10v linear regulator 8.5v linear regulator 3.3v linear regulator 8v linear regulator 10v selectable 5v linear regulator 1.8-3.3v selectable 1.8v linear regulator 2.5v selectable high side driver high side driver high side driver high side driver high side driver low voltage warning i2c interface standby regulators por logic bandgap cslew and sequencing vstby1 vstby2 bg1 vbat1 vbat1 vbat2 mrst* mrstdly en scl sda lvwin lvw* hsd1 hsd2 hsd3 gnd reg6 reg5 reg4 reg3 reg2 reg1 vstby2 vstby1 bg2 vstby1 vstby2 vbg vbat3_1/2 cslew vbg vbg pgnd d04au154 8 tab1 sda pgnd hsd1 v bat3_1 hsd2 en hsd3 cslew reg2 lvw_in reg1 lvw gnd mrstdly reg5 mrst stby1 v bat1 stby2 scl v bat2 reg3 reg6 v bat3_2 reg4 tab2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 25 26 22 21 23 24 27
electrical specification L5955 4/17 2 electrical specification 2.1 absolute maximum ratings 2.2 thermal data table 2. absolute maximum ratings symbol parameter value unit vs1, vs2, vs3_1, vs3_2 dc operating supply voltage 0.6 to 26.5 v vs1, vs2, vs3_1, vs3_2 transient supply over voltages, rise time = 10ms delay time = 115ms 34 v v s1,2,3_1,3 _2,ovs overvoltage shutdown 27 v v in input voltages (en, sda, scl, lvw, mrst, mrstdly, cslew) -0.6 to 5.5 v v out output control voltage -0.6 to 18 v t op operating temperature range -40 to 85 c t stg storage temperature range -40 to 150 c table 3. thermal data symbol parameter value unit r th j-case thermal resistance ju nction to case 1 c/w
L5955 electrical specification 5/17 2.3 electrical characteristics table 4. electrical characteristics (refer to the application circuit, v bat =v bat1 +v bat2 +v bat3 = 14v, i st-by1 = 0.5ma, i st-by2 = 0.5ma, i reg1 = i reg2 = i reg3 = i reg4 = i reg5 = i reg6 = 5ma, r hsd1 = r hsd2 = r hsd3 = 16 ) symbol parameter test condition min. typ. max. unit i qst-by stand-by quiescent current v bat = 14v, en = 0. i st-by1 = istby2=100ua, iq(vbat)=ivbat1+ivabt2+ivbat3 170 a i q maximum quiescent current v bat = 14v, en=vstby1 istby1=125ma istby2=300ma i reg1 = 40ma i reg2 = 200ma, i reg3 = 850ma i reg4 = 1a, i reg5 = 250ma i reg6 = 200ma, i hsd1 = 2a i hsd2,3 = 450ma 100 ma i en enable input current v bat = 14v; 5v electrical specification L5955 6/17 v ol lvw output voltage i ol = 100a 0 0.2 v t s thermal shutdown for hsds, r egs, v st-by1 , v st-by2 hsds, regs, v st-by1 , v st-by2 min. load. increase t amb until hsds, regs, v st-by1,2 disabled 170 c t s hys thermal shutdown hysteresis for hsds, regs, v st-by1 , v st-by2 hsds, regs, v st-by1 , v st-by2 min. load. decrease t amb until hsds, regs, v st-by1,2 disabled 10 c i o cslew output current 7 14 a t on st-by1, st-by2. minimum turn on time c slew =7nf; see figure 5 1.6 ms 3.3v/125ma v st-by1 v st-by1 output voltage i st-by1 = 125ma 3.14 3.46 v v line line regulation 7v v bat 18v (measure vreg1 across v bat range) 10 mv v load load regulation 0.5ma i st-by1 125ma (measure vreg1 across v bat range) 50 mv i q1 quiescent current (measure i bat ) i st-by1 = 2ma, v bat = 14v, i st-by1 = 125ma, v bat = 14v 150 10 a ma v dropout dropout voltage (measure v bat - v st-by1 when v st-by1 drops 0.1v) i st-by1 = 125ma i st-by1 = 5ma 2.6 1.2 v v i lim1 current limit 160 350 ma v lead v st-by1 absolute differential output voltage force v st-by2 low; measure v st-by1 - v st-by2 2.5 v v lag force v st-by1 low; measure v st-by1 - v st-by2 0.25 v svr1 supply voltage rejection st-by1 f o = 120-10khz, v bat = 14v with 1.0vp-p ac, f o = 20-20khz, v bat = 14v with 1.0vp-p ac 50 45 db db 1.5v/300ma v st-by2 v st-by2 output voltage i st-by2 = 300ma 1.425 1.575 v v line line regulation 7v v bat 18v (measure v st-by2 across v bat range) 50 mv table 4. electrical characteristics (continued) (refer to the application circuit, v bat =v bat1 +v bat2 +v bat3 = 14v, i st-by1 = 0.5ma, i st-by2 = 0.5ma, i reg1 = i reg2 = i reg3 = i reg4 = i reg5 = i reg6 = 5ma, r hsd1 = r hsd2 = r hsd3 = 16 ) symbol parameter test condition min. typ. max. unit
L5955 electrical specification 7/17 v load load regulation 0.5ma i st-by2 300ma 100 mv v dropout dropout voltage (measure v bat - v st-by2 when v st-by2 drops0.1v) i st-by2 = 300ma i st-by2 = 5ma 4.1 3 v v i lim2 current limit 360 700 ma svr3 supply voltage rejection st-by2 f o = 120-10khz, v bat = 14v with 1.0vp-p ac, f o = 20-20khz, v bat = 14v with 1.0vp-p ac 50 45 db db 10v/40ma reg1 output v reg1 output voltage i reg1 = 40ma 9.50 10 10.5 v v line line regulation 11.4v v bat 18v (measure v reg1 across v bat range) 55 mv v load load regulation 5ma i reg1 40ma 55 mv v dropout dropout voltage (measure v bat - v reg1 when v reg1 drops 0.1v) i reg1 = 40ma i reg1 = 5ma 1200 300 mv mv i lim1 current limit 60 200 ma svr supply voltage rejection (guaranteed by characterization- test at 1khz with 50db limit) 50 db 8.5v/200ma reg2 output v reg2 output voltage i reg2 = 200ma 8.3 8.5 8.7 v v line line regulation 9.6v v bat 18v (measure v reg2 across v bat range) 50 mv v load load regulation 5ma i reg2 200ma 50 mv v dropout dropout voltage (measure v bat - v reg2 when v reg2 drops 0.1v) i reg2 = 200ma i reg2 = 5ma 1100 600 mv mv i lim2 current limit 225 525 ma svr ripple rejection (guaranteed by characterization-test at 1khz with 50db limit) 50 db 3.3v/850ma reg3 output v reg3 output voltage i reg3 = 850ma 3.14 3.46 v v line line regulation 7v v bat 18v (measure v reg2 across v bat range) 40 mv v load load regulation 5ma i reg3 850ma 100 mv v dropout dropout voltage (measure v bat - v reg3 when v reg3 drops 0.1v) i reg3 = 850ma i reg3 = 5ma 3.46 2.86 v v table 4. electrical characteristics (continued) (refer to the application circuit, v bat =v bat1 +v bat2 +v bat3 = 14v, i st-by1 = 0.5ma, i st-by2 = 0.5ma, i reg1 = i reg2 = i reg3 = i reg4 = i reg5 = i reg6 = 5ma, r hsd1 = r hsd2 = r hsd3 = 16 ) symbol parameter test condition min. typ. max. unit
electrical specification L5955 8/17 i lim4 current limit 1.25 2.5 a svr ripple rejection (guaranteed by characterization-test at 1khz with 50db limit) 50 db 8v/10v/1a reg4 output v reg4 output voltage i reg4 = 1a 7.6 9.50 8.4 10.5 v v v line line regulation 11.4v v bat 18v, for v reg4 =10v 9.3v18v for v reg5 =5v (measure v reg5 across v bat range) 40 mv v load load regulation 5ma i reg5 250ma 100 mv v dropout dropout voltage (measure v bat - v reg5 when v reg5 drops 0.1v) i reg5 = 250ma @ v reg5 =1.8v i reg5 = 5ma @ v reg5 =1.8v i reg5 = 250ma @ v reg5 =3.3v i reg5 = 5ma @ v reg5 =3.3v i reg5 = 250ma @ v reg5 =5v i reg5 = 5ma @ v reg5 =5v 4.89 4.29 3.46 2.86 1.85 1.25 v v v v v v i lim5 current limit 300 700 ma svr ripple rejection (guaranteed by characterization-test at 1khz with 50db limit) 50 db table 4. electrical characteristics (continued) (refer to the application circuit, v bat =v bat1 +v bat2 +v bat3 = 14v, i st-by1 = 0.5ma, i st-by2 = 0.5ma, i reg1 = i reg2 = i reg3 = i reg4 = i reg5 = i reg6 = 5ma, r hsd1 = r hsd2 = r hsd3 = 16 ) symbol parameter test condition min. typ. max. unit
L5955 electrical specification 9/17 1.8-2.5v/200ma reg6 output v reg6 output voltage i reg6 = 200ma 1.71 2.38 1.89 2.62 v v v line line regulation 7v v bat 18v (measure v reg6 across v bat range) 40 mv v load load regulation 5ma i reg6 200ma 50 mv v dropout dropout voltage (measure v bat - v reg6 when v reg6 drops 0.1v) i reg6 = 200ma @ v reg6 =1.8v i reg6 = 5ma @ v reg6 =1.8v i reg6 = 200ma @ v reg6 =2.5v i reg6 = 5ma @ v reg6 =2.5v 4.89 4.29 4.22 3.62 v v v v i lim6 current limit 240 600 ma svr ripple rejection (guaranteed by characterization-test at 1khz with 50db limit) 50 db 2a hsd1 v sat output saturation voltage ihsd1 = 1a continuous time operation ihsd1=2a t=5seconds 0.6 1.2 v v i leak1 output leakage current all driver outputs are off 50 a i lim current limiting r hsd1 = 0.5 2.4 4 a 0.45a hsd2 & hsd3 v sat output saturation voltage ihsd2,3 = 300ma continuous time operation ihsd2,3=450ma t=5 seconds 0.6 1.2 v v i leak2,3 output leakage current all driver outputs are off 50 a i lim current limiting r hsd2,3 = 0.5 0.550 1 a characteristics for i 2 c v il low level input voltage 1.5 v v ih high level input voltage 3 v v hys input hysteresis 0.2 v v ol1 v ol1 low level output sink current = 3ma sink current = 6ma 0.4 0.6 v v i 1 input current 0.5v v i 4.5v 10 a f scl scl clock frequency 400 khz table 4. electrical characteristics (continued) (refer to the application circuit, v bat =v bat1 +v bat2 +v bat3 = 14v, i st-by1 = 0.5ma, i st-by2 = 0.5ma, i reg1 = i reg2 = i reg3 = i reg4 = i reg5 = i reg6 = 5ma, r hsd1 = r hsd2 = r hsd3 = 16 ) symbol parameter test condition min. typ. max. unit
functional description L5955 10/17 3 functional description the three high side drivers are one 2a output (hsd1) and two 450ma outputs (hsd2 & 3). the six regulator outputs are 10v at 40ma (reg1), 8.5v at 200ma (reg2), 3.3v at 850ma (reg3), 8/10v at 1a (reg4), 1.8v/3.3v/5v at 250ma (reg5) and 1.8v/2.5v at 200ma (reg6). the two stand-by regulators are 3.3v at 125ma (st-by1) and 1.5v at 300ma (st-by2). st-by1 and st-by2 are equipped with reset function. st-by1 and st-by2 share one reset output (mrst). a slew rate limiter and a sequencing function control st-by1 and st-by2 turn on/off. the 8.5v regulator output (reg2) has a tighter tolerance output than the other regulator outputs. the 8.5v output is a 2.5% (5% total range) output over temperature to improve performance and reduce cost on the 8.5v output. the other outputs are 5% over temperature. the two stand-by regulators are switched on/off from battery line. the reg3 is switched on/off by enable pin which also activate the i 2 c bus. the other regulators and hsd?s are turned on/off independently by i 2 c bus, which also controls the regulators' output voltages. with enable pin set to 0 the total current sunk from the battery line minimized. figure 3. reset and power-on reset schematic ma 5.6pf i vcp (1fault) rst* reset driver latch pull down latch window comparator crstdly rst* 1 a 5v mb 1 a 0.22 f 5v vstby1 for mrst reg6 for rstr6 vstby2 r sq q r sq q ff1 ff2 d02au1401
L5955 functional description 11/17 figure 4. reset timing figure 5. slew function figure 6. sequencing function vreg6 vstby1 or 2 mrst* rstr6

functional description L5955 12/17 figure 7. definition of timing on the i 2 c bus. figure 8. typical application circuit 3.1 write mode: s = start condition - sda goes from high to low while scl is high a = acknowledge - the device being written to, pulls down on data line (sda) during the acknowledge clock pulse. p = stop condition - sda goes from low to high while scl is high. t bup ps p sda scl sr t low t r t f t hd;dat t hd;dat t su;dat t su;sta t hd;sta t su;sto d99au1007 t sp t high stby1 stby2 reg1 reg2 reg3 reg4 reg5 reg6 hsd1 hsd2 hsd3 gnd pgnd tab1 tab2 v bat1 v bat2 v bat3_1 v bat3_2 en scl sda mrstdly cslew 0.1 f t.b.d. lvw stby1 mrst lvw_in 10k v bat1 t.b.d. t.b.d. 11 17 13 15 9 2 21 7 25 5 23 19 18 20 12 10 24 26 16 22 4 6 8 14 3 1 27 8 x 10 f chip address data byte s 0 a a .. .. p msb lsb msb lsb
L5955 functional description 13/17 3.2 chip address byte: 3.3 data byte: default mode is 0000 0000 which corresponds to all outputs being off, low power mode. table 5. chip address byte chip address read/write a7 a6 a5 a4 a3 a2 a1 a0 0 001000 0 table 6. data byte b7 b6 b5 b4 b3 b2 b1 b0 data byte 0 reg6 set reg5 set2 reg5 set1 re g4 set hsd3en hsd2en0 hsd1en0 data byte 1 reg6en reg5en reg4en reg2en reg1en table 7. data byte 0 description name description state definition bit reg6 set reg6 output voltage configuration 01.8vb7 12.5vb7 reg5 set1 reg5 set2 reg5 output voltage configuration 00 5.0v b5, b6 01 3.3v b5, b6 10 1.8v b5, b6 11 x b5, b6 reg4 set reg4 output voltage configuration 08.0vb4 1 10.0v b4 hsd3en hsd3 enable 0offb2 1onb2 hsd2en hsd2 enable 0offb1 1onb1 hsd1en hsd1 enable 0offb0 1onb0
functional description L5955 14/17 table 8. data byte 1 description name description state definition bit reg6 en reg6 enable 0off b6 1on reg5 en reg5 enable 0off b5 1on reg4 en reg4 enable 0off b4 1on reg2 en reg2 enable 0off b2 1on reg1 en reg1 enable 0off b1 1on
L5955 package information 15/17 4 package information in order to meet environmental requirements, st offers these devices in ecopack ? packages. these packages have a lead-free second level interconnect. the category of second level interconnect is marked on the package and on the inner box label, in compliance with jedec standard jesd97. the maximum ratings related to soldering conditions are also marked on the inner box label. ecopack is an st trademark. ecopack specifications are available at: www.st.com. figure 9. flexiwatt27 (vertical) mechanical data and package dimensions outline and mechanical data dim. mm inch min. typ. max. min. typ. max. a 4.45 4.50 4.65 0.175 0.177 0.183 b 1.80 1.90 2.00 0.070 0.074 0.079 c 1.40 0.055 d 0.75 0.90 1.05 0.029 0.035 0.041 e 0.37 0.39 0.42 0.014 0.015 0.016 f (1) 0.57 0.022 g 0.80 1.00 1.20 0.031 0.040 0.047 g1 25.75 26.00 26.25 1.014 1.023 1.033 h (2) 28.90 29.23 29.30 1.139 1.150 1.153 h1 17.00 0.669 h2 12.80 0.503 h3 0.80 0.031 l (2) 22.07 22.47 22.87 0.869 0.884 0.904 l1 18.57 18.97 19.37 0.731 0.747 0.762 l2 (2) 15.50 15.70 15.90 0.610 0.618 0.626 l3 7.70 7.85 7.95 0.303 0.309 0.313 l4 5 0.197 l5 3.5 0.138 m 3.70 4.00 4.30 0.145 0.157 0.169 m1 3.60 4.00 4.40 0.142 0.157 0.173 n 2.20 0.086 o 2 0.079 r 1.70 0.067 r1 0.5 0.02 r2 0.3 0.12 r3 1.25 0.049 r4 0.50 0.019 v5? (typ.) v1 3? (typ.) v2 20? (typ.) v3 45? (typ.) (1): dam-bar protusion not included (2): molding protusion included flexiwatt27 (vertical) h3 r4 g v v g1 l2 h1 h f m1 l flex27me v3 o l3 l4 h2 r3 n v2 r r2 r2 c b l1 m r1 l5 r1 r1 e d a v1 v1 7139011 pin 1
revision history L5955 16/17 5 revision history table 9. document revision history date revision changes 29-aug-2007 1 initial release.
L5955 17/17 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 he rein 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 as sumes 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. i f 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 whatsoev er of such third party products or services or any intellectual property contained therein. unless otherwise set forth in st?s terms and conditions of sale st disclaims any express or implied warranty with respect to the use and/or sale of st products including without limitation implied warranties of merchantability, fitness for a parti cular purpose (and their equivalents under the laws of any jurisdiction), or infringement of any patent, copyright or other intellectual property right. unless expressly approved in writing by an authorized st representative, st products are not recommended, authorized or warranted for use in milita ry, air craft, space, life saving, or life sustaining applications, nor in products or systems where failure or malfunction may result in personal injury, death, or severe property or environmental damage. st products which are not specified as "automotive grade" may only be used in automotive applications at user?s own risk. resale of st products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by st for the st product or service described herein and shall not create or extend in any manner whatsoev er, any liability of st. st and the st logo are trademarks or registered trademarks of st in various countries. information in this document supersedes and replaces all information previously supplied. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. ? 2007 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

▲Up To Search▲

Price & Availability of L5955

	To Download L5955 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .