TA7089P

TA7089P TOSHIBA | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 20

Technical content

TOSHIBA. ELECTRONIC O2 DEM 909724? 00193979 & ae woes :: Te58-=23 TA7 089P BIPOLAR LINEAR INTEGRATED CIRCUIT ——— SILICON MONOLITHIC GENERAL PURPOSE VOLTAGE REGULATOR. Unit in mm « Low Output Impedance : 29 =40m0 (Typ.) sis 2 10 9 8 . High Ripple Rejection : RR=48dB(Typ.) en aa 1° « Low Drop Out Voltage : |Vry-Voyr|=1-8V Pee TS . High Output Current : Iovr=200mA (Max. ) : ieowar, 182402 «Output Current Up to 5A Can be Supplied by 3 ; amg connecting External Transistor. todo 3 Exe . The TA7089P is Easily Mounted on a Printed TAY i : Circuit Board, and is Provided with 14 Pin x — | il \\ eon, Output, 7 Pin GND and 1 Pin Input for = I oe as czas Application as a Power Supply for Digital IC. Sl postazs . Load pitch ie 254 and tolorance ie £025 against thooretical center of each load that ie obteined on the baoiv of No,1 and No,14 lends, MANTIME RETINS [seos0 CHARACTERISTIC rare [unr |[roowrea ena | [rerminat oirape @ [we | 7 |W | [output current | tour | -200 | an _| [rower Dissipation [rp | 600 | | BF st PIN CONNECTION B ae ae oe ba TOP VIEW 8 88 2 2 58 £8 38a “ois 12 11 10 9 8 ; ae as os os T 2 3 © 8 6 7 E 2 2 £2 2 B Es : —540— ; _ www.chipdocs.com Be sure to visit ChipDocs web site for more information.

TOSHIBA. ELECTRONIC O2 DE 9097247 00193860 2 ° : T- $8-Hl-23 TA7089P ELECTRICAL CHARACTERISTICS (Ta=25°C) TEST CHARACTERISTIC SYMBOL CcIR- TEST CONDITION MIN. | TYP. | MAX. | UNIT Cur’ [input Wiese ft | = fs 7<Vin <35V Output Voltage Vour 1 | oure0ma 3.3 33] Vv Trop Ouzpor Voltage Tmo 2 [agon0, oumtoma [zo] uel - |v | Reference, Voltage Vref y | 7<Vin<35V 2.7 3.3| Vv Tour? OmA . Bias Current 1. [7 <VIn<3¥ 15| 3 VouT= Om Ripple Rejection 2 | Vinrldv, f=1kHa 4o] 48] - Your=10V, Tour=50ma} Output Voltage Temperature . Py Coefficient Tevo 1 40.0 ue bantpor exceene | toe |) VINe14V, f=1kHz Output Impedance Zo veyrei0V, Tovr~5OmA 4o| 150] mo Tour50mA I : Load Regulation Reg-load | 1 Vin=15v - nV 50 <Iour <200mA —541— i www.chipdocs.com Be sure to visit ChipDocs web site for more information.

/ TOSHIBA, ELECTRONIC 02 DE 9097247 0019381 4 : oe T- S84 I-23 TA7089P ee EQUIVALENT CIRCUIT input (2) a (() ourrut (3) ounrent urwrr(+) [A g 0) current irr (-) FREQUEN . & & @ ourzr sexse @) on STANDARD APPLICATION CIRCUIT (10V, -100mA) Dy ° o OUTPUT s tarossr > |e P ao BE 3 18

3 OmOneS al Te Te

¥ 4 ° 3 & 2 oo} I GNDo “ OGND Ps Note : IC Protecting Diode ; When the surge voltage is applied to the IC output or when Vzy* becomes more - than Vour*(Crn Voyr) at times of power ON or OFF. m It is required to cannot high speed diodes between input and output terminals, S| Z | —542— SE A A A RR A A www.chipdocs.com Be sure to visit ChipDocs web site for more information.

TOSHIBAy ELECTRONIC 02 ra | 097247 0019382 & TA7089P T*S8-/)- STANDARD PRINT BOARD 1-33 PATTERN Hg Or ) Ne Vey QO ON oursur a Jj IHL &G0004 $| ll ale FS Lo . “ ©O@O pe © O 1000p OE haa O- O comm [ow] TEST CIRCUIT 1. Vin, Vour, 1Vrn-Vourl, Zour, 1B, Vref» Reg-line, Reg-+load, TCyo Rep Tour ee] im _G > 4 y : nA7089F Cam al ds CQ) tour : Vin ¢ é Vout = ase x Vref : Tp = I1n-lour Fs rroyo = YLaun.Z5°C)Hours=20°C) x 00 (x/*e) 4 | —543— : og | i | . ‘www.chipdocs.com Be sure to visit ChipDocs web site for more information.

TOSHIBA, ELECTRONIC O2 DE Bsosze4? 0019383 8 a | TA7089P TSEM-3S A 2, RR COAXIAL CABLE i “4 = ~) oy 8Vp_p (f=2kHs) ®) en ee we va G) 3 . Ripple Rejection - ei RR = 20 og 10 (2) (aB) 3. Ze Vour=10¥ a

5 Toor

oO : vin raroosr | EEE Oa vee ‘ @) “ (f=1 kHz) Zo Calculation Method ; a fo = Rstz * 20 Rs>Zo ; 0" RE * 20 ; : Therefore, Zo = Pra + Rg (a) : —544— www.chipdocs.com Be sure to visit ChipDocs web site for more information.

i ; "TOSHIBA. ELECTRONIC G2 DEJ 9097247 o0193484 o rT TA7OR9P a - TSB 3 DECISION CHART OF RESISTOR Rj Iout MAX -— Vin 89 3 HH -sse | TT TT TTT to near sinc ao LEE TT sod | [I] tree g°CT TT TTT TT TTT eT TT TT] voor ov sod TET TT TT a FT EET ET PELE TTY Su i LI yr St eA | ef PET ET gC ate LTT RT TTT Tet one oe E ett IN TTT TT [Ter TT rt eg SENET ; LLAOITTITT TTT gs LTT TT Pee a eC a IG 16 Bo as B08 OUTPUT VOLTAGE IVourl (Vv) INPUT VOLTAGE Vyn (VY Pp MAX — Ta Your — Ta €™ TTT a z sot |_| Tt TT TTT tt Sf PPT TE TT | tourmaes e- LET TTT TTT Ty 5 {perry rT 5 sof ttt Tt yt tt © UT Perry ryt ETE N ETT TTT TT g LLP Pritt e oo LEAT ETT TT ett Tt iit tte. BUTTE NTT TTT FCEETTTT TT ryt Ty or eee Eft TTT rT er BUTTE TTT TTT] 8 CLIT TTT TT Try 2 {LTT it ttt ty etl TT TTT tt tt t | % 25 50 7 100 125 160 —60 -25 oO 25 60 C7 100 AMBIENT TEMPERATURE Te (C) AMBIENT TEMPERATURE Ta (C) ‘www.chipdocs.com Be sure to visit ChipDocs web site for more information.

TOSHTBAs ELECTRONIC Oa pegaosen? 0019385 1 | | - a TSB (1-33 TA70B9P Zo- ft Vout — lout es ee TT TTL] Fool LO wet 5 ue Seer see" | Esl LET LT TT vouron * LLL eB LETT Ty Th i TTT TTT TTT) ost - ET Per Tt CoCCOVCe ese ES CEES EEC E*FEEEECEE COE “EERE ° errerereirtre = * aL TT PT %q0 aol a ~— 10> a0 —108 0 30 i100 ~160~ «ROOD FREQUENCY f (kis) OUTPUT CURRENT Ioyq (ma) RR - > Tour MAX — Ta . COT ——— of te ae vau=i07 Po ee © 160 Your=¥ * COC : ese i vol EEE NTT : PCY Poe e Cerro im | og of PY FREQUENCY f (Hz) AMBIENT TEMPERATURE Ta (C) - —546— . ee ‘www.chipdocs.com Be sure to visit ChipDocs web site for more information.

TOSHIBA, ELECTRONIC Oe DEM 909724? 0019386 43 : : FSR I-33 BLOCK DIAGRAM . . CONTROL 7 g CIROUIT ° Ep ais Input fe aes Loan :

3 ERROR Baa

58 AoLivte PO] FBS

METHOD OF USE AND GENERAL PRECAUTIONS 1. Input Voltage Range The TA7089P can be used at 7~35V. 2. Output Voltage Setting Your . Vino—-Qy ‘ "4 at . FLO & (o ei 3 G) . onp Output voltage is set by resistor R1 (See resistor-output voltage characteristic diagram.) » Yref_(R1+R2) Ig Your R2 Where, Vref=3V R2=3.3ka Output voltage is { VouT=0.9 x 10-3 x R1+3(V) Vin>VouTt2 Output voltage setting range is 3.3~33V. -547- . ee SR SSR MSMR RRR REE RERL www.chipdocs.com Be sure to visit ChipDocs web site for more information.

TOSHIBA, ELECTRONIC Oe DE— 909724? 0019387 5 A T-S8-(1-a3 TA7089P 3. Power Dissipation Internal power dissipation Pp in IC at normal operation is Pp=Vin * Lp+(Vrn-Vour) * lour Where, {Ig : Bias Current Vin : Input Voltage VouT : Output Voltage Iour : Output Current Power dissipation at output shorted condition. Pp=(IsctIp) VIN Max. Power dissipation Pp MAX. must be as follows + Ty MAX - Ta Pp Max.< iS = "8 : D Reh ) Where, Tj MAX. ; Junction Temperature Ta ; Ambient Temperature Rth } Thermal Resistance Ty MAX. and Reh of the TA7089P are 5 Tj MAX. = 125°C f Reh=165°C/W (Free Air) 4. Rang of Output Current , Rang of output current is 0~200mA. When output current ie above 200mA, use external transistors. (See Application circuits.) 3 5. Control of Output Current = The TA7089P has a build-in output current limitting transistor and is therefore capable of constant current and fold back current limitting. ‘The constant current is Limited as shown in the following diagrams. Reo OVER CURRENT PROTECTIVE CHARACTERISTICS 6a” | o—@) kD © TATOSOP } Z iaoot 9) | core @ § : § é i tour MAX. 3 Tour —548— eI CESS SR RS www.chipdocs.com Be sure to visit ChipDocs web site for more information.

TOSHIBA, ELECTRONIC Oe DEMIoI?e4? OOLI38S 7% | TA7089P | SS SS LES | T-S$-l-as : Output current is limited at a point where voltage in RSC drops to voltage between the transistor base and emitter Vpg (about 0.65V at Tj=25°C) Rsc = [ogq"HAK Where, Vpg+VBE(Tj=25°C) - 2% 10-3 (15-25) 6. Phase Compensating Capacitor : oo Select a capacitor having capacity 0.1#F-1000pF according to the external wiring conditions. Normally, use a capacitor at 1000pF. 7. Output Capacitors Output capacitors of 10sF and 0.14F shall be mounted parallelly. —549— 3 _ sac Ts Ne ee nn sae se en hh www.chipdocs.com Be sure to visit ChipDocs web site for more information.

“-TOSHIBAs ELECTRONIC Oc DEP 3097247 0019389 5 TA7089P TsStiras DECISION CHART OF RESISTOR Ry JA ; 7 ALY g : et | GF . 20 Als I PLL | 4 | a aod . | | f Up Z| th fo | yy, AI : OUTPUT VOLTAGE Vour (Vv) A —550— d ca www.chipdocs.com Be sure to visit ChipDocs web site for more information.

TOSHIBAs ELECTRONIC Oe DEM 9097247? 0019390 & TA7089P i man SES BASIC EXAMPLE OF 10sF MOUNTING OF TA7089P ON PRINTED CIRCUIT BOARD (LOCAL REGULATOR APPLICATION) PRINTED CIRCUIT BOARD Po ae mg tt FILTER CAPACITOR 1 | tae tym ty \\ i i ps] oa | | \\ | \\ 1 . = 4 — , t ' 5 pr? | \\ | Ps} fh I I | tipo] py I 1 ‘TA7OB9P. TATOSOP TATOBOP. | EXTERNAL EXTERNAL Exrenway | | f OrROUIT erreur? orneurt I H | tavosoP rav089F ‘ra7o8or! 1A7089P ! = ! | a p | pd) ee SF POWER | | | en rs | 8 OND, # ) ADVANTAGES 4 . Mutual effect between raws can be ignored. . ) « Adjustment is simple as malfunction due to noise is reduced. : ) . Pattern design is simple as the pin arrangement is 14 pins for output, 7 pins a for GND and 1 pin for input. os . THL. IC, TTL. IC and other supply voltages can be incorporated into a same printed is > circuit board. ae —551- www.chipdocs.com Be sure to visit ChipDocs web site for more information.

TOSHIBA, ELECTRONIC O2 DEM 909724? 0019391 7 | | TA7089P TSE IOS AL APPLICATION (1) 1. Circuit Diagram . Reo vm 8 i al de 3 ie) ez Si és Cr) @) ® | ya a 2, Decision of Circuit Constant Circuit specification - « Output Voltage Vour=6V + Max. Output Current Igyp MAX.=50mA « Output Limitting Current Igc=70mA Decision of voltage dividing resistors Rj and R2 A resistor of 3.3k9 is used as R2 by considering current balance of a differential amplifier. Ri is obtained from the following expression or the resistor Rj set-up table. Ri tk: Vour “nO Vref Vref is in the range of 2,7~3.3V from the specification. When Rj is obtained through calculation according to the above, it is 2.7k2 SR1S4.4k0 Further, 3~4kq is obtained from the R] set up table. Therefore, Resistor R] would be 3k (fixed) + 1k (variable resistor). Decision of Rgc- Current limitting resistor RSC value is obtained from the following expression : VBE = Bsc Isc Vpp i? Base to emitter voltage of an internal current limitting . transistor. —552— RR www.chipdocs.com Be sure to visit ChipDocs web site for more information.

TOSHIBA, ELECTRONIC Oe pe 909724? 0019392 9 C FS8-11-33 _1a7089P A value at T=Tj is applied. . Assuming that a value of Vpg (at Tj=125°C) ds 0.45V, Rsc is 6.4Qwhen Igc=70mA . is substituted. Decision of Min. Input Voltage Min, input voltage Vyy MIN. which is required to operate this circuit is Vin MIN.=Vourtl Vin-Voutl +VR : Vg : Voltage between Rsc Where, VouT=6V IVin-Vourl=2V (from the Electrical characteristic table) : Vp=0.65V Therfore, Vy MIN.=8.65V Decision of Rp Rp is dummy resistor used to flow current constantly in order to operate the circuit stability. Required current is approximately 3mA. = Your = Rp Sur 1. 8k0 Calculation of Pp At the normal condition, max. power dissipation of IC is obtained from the following expression : Pp2VinxIpt+(Vin-Vour) * our . Power dissipation at load shorted condition is obtained from the following expression : ; Pp=Vin*Ipt (Vin-VR) * Isc Designing should be made carefully by calculating power dissipation at time of load shorted, input voltage and transformers so that Pp MAX. is not exceeded. —553— www.chipdocs.com Be sure to visit ChipDocs web site for more information.

TOSHIBA. ELECTRONIC Oe vey 909724? 0019393 0 I —— T-S811- as eS _APPLICATION (2) CURRENT BOOST CIRCUIT EXAMPLE 1. CIRCUIT Rso © Your a _ [4 vaipe @) ko) ul ak 3 tia & is) iw 3 () G) . 2 2, Decision of Circuit Constants Circuit Specification + Output Voltage Vour 5V « Max. Output Current Ioyr MAX. 1A « Current Limitting Protection Circuit + Decision of Voltage Dividing Resistors R] and R2 , Aresistor of 3.3k is used as Rp by considering current balance of a : differential amplifier. Rj is obtained from the following expression : RL: Vout oe ae x Vref : When the resistor Rj setting table (2) is used, RL = 1.5k0~3K0 + Therefore, R would be 1.5kn (fixed) + 2k@ (variable). + Decision of Rc Vag = Rsc XIsc Assuming that + Tgo=l. 2A VpE=0.65V _ VBE _ 0-45V (Ty=125°C) | : Rsc Tse Saas OY ae 0.4 (a) z —554— www.chipdocs.com Be sure to visit ChipDocs web site for more information.

“TOSHIBA. ELECTRONIC Oe DeEMq09724? 0019394 2 TESSA-AS _saroggp Rated capacity is Rgc=0.4a (1W) + Decision of Min. Input Voltage Obtaind Min. input voltage of the circuit. Vin MIN = Vour + 1Vrn ~ Your] + Vag + VR Vg : Voltage between Rg¢ when, VouT,|ViIn - Vour!, Vpe» YR . expression, Vy MIN = 5.0 + 2.0 + 0.7 + 0.6 . = 8.3 (¥) Further, as the catalog standard is 7V or above, Vin MIN = 8.3 (V) « Decision of R3 Resistor Rj is to be inserted for stabilizing the circuit and several mA would be sufficient. | When the circuit is designed by assuming that current is 5mA. ) =-¥BE.. 0-70 | Rg =-gBE = S:2h +150 (a) | « Decision of Rp , Resistor Rp is used to apply dummy current and functions to stabilize the circuit together with R3. 1~10mA is generally accepted. The design is made here at SmA. = Your. _5V Rp Tp Sma > 1 ka) Summary R2 3.3k0 Ri 1.5k (Fixed) + 2k@ (variable) Rsc¢ 0.49 (1W) R3 1500 Rp 1ka Vy MIN. 8.3V ~555~ www.chipdocs.com Be sure to visit ChipDocs web site for more information.

: TOSHIBA, ELECTRONIC O2 DEfgdod7e4? 0019355 4 I TA7089P FSB11-93 TL 3. Parastic Oscillation Prevention To prevent a parastic oscillation, insert a capacitor of about 0.14F into the input and output sides. It would be effective when the capacitor is insert as close as to IC terminals. 4, Example of Output Voltage Ripple Value Calculation Assuming that input ripple voltage is 3 Vp-p AC, VIN = 10Vp¢ + 3Vp-p AC However, actual mean value of full load input voltage when voltage fluctuation at the transformer primary side is considered is 12V DC. tA RAR “ SyP-P INPUT WAVEFORM Obtain output ripple voltage. As Reg. in is min, 40(d4B) from the standard data table, (Output ripple voltage) = 30mVp-p AC. 5. Selection of Power Transistor s Full Load Input Voltage 12v (AVG) =| Output Voltage Sv : Output Current wv s| When Pp MAX. is obtained from the above data, © . Pp MAX = (12-5) x1 =7 Ww) 5 However, when power dissipation resulted from output short is calculated, $ Pp MAX = 121.2 = 14.4 (W) 2SD867 (or equivalent) is selected this time from TOSHIBA SEMICONDUCTOR Ff HAND BOOK. & —556— ‘www.chipdocs.com Be sure to visit ChipDocs web site for more information.

Pano Hi eile Pipl da CRS rc a AE Peed tid Rea RON cc Sarto a ah Aarts rat TOSHIBA, ELECTRONIC Oe DE i 9097247 OOL439b & TSEU23 6. Design of Heat Sink 1) Design of power transistor radiation . From the 2SD 867 data table (TOSHIBA SEMICONDUCTOR HAND BOOK) 150-25 °, Rth(j-c) “7 gog et 1+25°C/H Therefore, Reh(j-a)=1-25+1.0+Rth(£) (It is assumed that Rth(s)+Rth(c)=1-0°C/W) Pp MAX = 14.4W : Ty MAX = 150°C . ‘ta=60°C (Including temperature rise in device) From the above data, _ Ty MAX ~ Ta | 150-60 . ¢ 90, Ren(j-a) "pp WAX 14,4 * 6-2°C/M . Accordingly, thermal resistance required for a heat sink is, Reh(£) = Ren(j-a) ~ Reh(j-c) ~ Reh(s) ~ Reh(e) = 6.2 = 1.25 - 1.0 = 3.95°C/W When an A@ heat sink is used, size required can be seen as follows from TOSHIBA SEMICONDUCTOR HAND BOOK : 100mm * 170m * 2m Further, in actual designing it is a general practice to derate Tj MAX taking reliability into consideration. 2) Design of IC Heat Sinking Max. power consumed in IC is obtained from the following expression : zi Igco-Vpe(2)/R3 4 VBE(2) MAK = (VEN MAX-V; x(Ascrtne (2) (23 + Ip MAX Pp (Vin MAX-Vpe(1)) RPE CHIN) +R Ip Assuming that Vpg(1) + VBE of current limiting internal transistor = 0.65V Vpr(2) ? Vag of power transistor = 0.65V ‘ hpe MIN : Min. value of hpg of power transistor 2 (at IcTgc) 40 - Ip MAX 1 Max. value of bias current of TA7089P = 6mA Pp MAX is above 504mW. A -587- s a www.chipdocs.com Be sure to visit ChipDocs web site for more information.

~ TOSHIBA, ELECTRONIC O2 DEB corey? 0019397 6 I — ees Isc Vpe(e) very {I Ry pp WT @) Rso Viv ax Lay Veet) Ta7080P 7. Application Specification VIN 12Vp¢ + 3vP-Pac Vour 5¥pc + 30mvP-Pac Ty MAX 1.24 Current limitting protection circuit Example 1. Current Boost Circuit 28D110¥ a4n(1w) oY | ~—», [ . g HT | ae 3 w® 9 ai8s ask a ny an Lape ui © 32 @) @ g 3 3 EI 2SD876 Heat Sink (Ren(f) = 3.95°C/W) 100 170 2mm Ag —558— a EP TS RR www.chipdocs.com Be sure to visit ChipDocs web site for more information.

) TOSHIBA, ELECTRONIC O2 DE sos7ey? 0019398 a A ) a | TAS 1193 | Example 2, Positive and Negative Power Supplied Fg @ 4 9 Wout vmoeor | re) . & | mii YS 3 @) @) g os . Vin 5 3 . 8 {is) Rgo soa BO carooor vain ©) 2 & 'S) Pele jek 3 @) ©@) ¢ 38 vam 8 3 a o~VYour Use diodes having less forward voltage drop for D1 and D2. —569— J www.chipdocs.com Be sure to visit ChipDocs web site for more information.