TA2015FN TOSHIBA | Alldatasheet
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TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC RIPPLE FILTER (1.5V USE) The TA2015FN is a ripple filter IC, which is developed for low voltage operation (1.5V). It is especially suitable for supplying voltage for headphone stereo etc. <> sv Sy FEATURES Neal @ Built-in a power switch ° e Excellent ripple rejection ratio : RR=43dB (Typ.) © Ripple filter output voltage can be controlled by external SSOP10-P-0.65 resistor. Weight : 0.04g (Typ.) © Output voltage is limited to Vpf=1.5V (Typ.) @ Built-in two constant current sources. e@ Excellent low voltage operation. @ Low quiescent supply current (Vcc =1.2V, Ta=25°C) I¢c =0.7mA (Typ.) @ Operating supply voltage range. (Ta = 25°C) Vcc (opr) =0.9~2.2V BLOCK DIAGRAM MARKING out | comp tease | vec gogao & O—® O—O HEHE, Lf | nos lo HAAG Oooo OO) O_O lor loz np +] RF “RN 2610016802 malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to observe standards of safety, and to avoid situations in which a malfunction or failure of a TOSHIBA product could cause loss of human life, bodily injury or damage to property. In ceveloping your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent products specifications. Also, please keep in mind the precautions and conditions set forth in the TOSHIBA Semiconductor Reliability Handbook 1997-07-07 1/7
Terminal voltage : Typical terminal voltage with test circuit (Vcc =1.2V, Ta= 25°C, non Load) Output of constant current source 1
1 Operating condition
( PW SW :H MODE SW _:L Output of constant current Pfs Res — Synchronized to PW SW a a aa Ripple filter terminal g Vee : Ripple filter output voltage . : kK ©) RF IN can be controlled by external Sg : 47kQ. i |e 1.14 resistor. i ® 3 ' (See application note) a> Mode switch tT vec MODE SW Vec : loz, RF OUT on \\, \\, ( eno /oPEN : lot, loz on 6) ‘) Power switch 20k, 20k02.5k: Y PW SW Vec : Power on ( GND/OPEN : Power off A 2 Base biasing terminal for ripple filter transistor. ae Ouro ox MC Output current capacity is 4, NE “ 1.2mA with only built-in PNP ’ i ‘ transistor. eens This capacity can be increased PSO with an external transistor Qx. Pow Pmcrmemre| |B pos a ripple filter circuit [io [RF OUT [Ripple fiter output
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8 The tresncscee omesined here 8 presented erly as a guise for he sopcatons oF ser product. No responsiblity is assumed by TOSHIBA by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. @ The information contained herein is subject to change without notice 4997-07-07 2/7
- Operation mode of constant current source Operation mode is decided by switch condition shown in table.1. Output of constant current source 1 can be used as a eet on fe | reset circuit by changing start up timing of PW SW, MODE SW. i 2. Ripple filter output RF OUT ict | It is necessary to connect an external pull-down resistor with Lot | PW SW (pin®) and MODE SW (pin®) in case that ripple filter Table.1 Operation mode circuit doesn’t operate normally due to external noise etc. 3. Adjustment of ripple filter output voltage an ow i en - . Q : Internal circuit of pin@ is shown in Fig.1. Ripple filter output <2 Vee : voltage is decided by internal resistor Rj, R2 and Q3, and . z kK Q2 (4 limited by Dj~2 and Q3 to Vyf=1.5V (Typ.) oe : ¥ 47K. 3 + Ripple filter output voltage can be controlled by method 4 a? > @ ' below. a (1) | Method to rise the ripple filter output voltage Fig.1 Internal circuit of pin@® External resistor should be connected between Vcc and RF IN terminal (pin®). In this case, output current capacity of ripple filter circuit is down. Because at ripple filter output stage, collector-emitter voltage of PNP transistor will small, and drive capacity of transistor is down. (2) | Method to drop the ripple filter output voltage External resistor should be connected between GND and RF IN terminal (pin@). Current flows through external resistor and internal resistor Ry, R3 (2.4kQ, 47k). In case that output voltage dropped too much, ripple rejection ratio and other characteristics will be worse, because constant current source of differential amplifier is saturated especially at low voltage. 4997-07-07 87
MAXIMUM RATINGS (Ta = 25°C) CHARACTERISTIC SYMBOL RATING UNIT Supply voriage 7 Constant Current Source Output Voltage Constant Current Source Output Current [ Is | 10S Ripple Filter Output Current (Built-in transistor) IRF 20 Pp (ote) | 300 | maw | Operating Temperature = 25~75 °c Storage Temperature =55~150 (Note) Derated above Ta=25°C in the proportion of 2.4mW/°C. ELECTRICAL CHARACTERISTICS (Unless otherwise specified, Vcc =1.2V, Ta =25°C, SW, : ON, SW2 : ON) TEST CHARACTERISTIC SYMBOL TEST CONDITION wn. | ve. max UNIT CUIT PW OFF, SW, : OPEN en eS Ae eT vest sipoy Coren egg [igo ormton= | — [os aT] ices | = TIne=loa=0 b= por] Ripple Fiker Output Vortage | Var | — |Vee=V, Ingo lost [ose] — |v] - a : Vr= —320BV ree ee Output Curren es f=] of = P| Power Switch On Current | Ip | — | vg=oev|s[ = [= [a [Power Switch Off Voltage | V6 | | o3 | v | Power Switch Off Voltage V6 [| — | Vec=o.9v |¥1050:3V [ of — | 03 [ v Mode Switch On Current | “Is | — | Lvozov [5s] = | — 12a Mode Switch OFF Voliage | Vs [= Loz] op = fos |v TEST CIRCUIT RF 2SA1362-Y “I ice 2 ” < % b Ee em : Xa RF COMP «BASE. Vcc PW our sw TA2015FN RE MODE lot tgp GNDIN SW Sh } fe) fe} aa if lon loz 1997-07-07 4/7
CHARACTERISTIC CURVES (Unless otherwise specified, Vcc = 1.2V, IRF =0, |o1 =!02 =0, Ta=25°C) lec - Vee VRE - Vcc 15 2 a{ [|i] ii Pt | ttt £ w g z ce ee ee PLL tert) oe |] TT
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5 wn =f = - L— | lece 5 1 L| 2 os = z 7 eit l ttt] |} ¢ P47 tty >it | i | pt TT a is : 3s Ro 15 7 ts SUPPLY VOLTAGE Vcc (V) SUPPLY VOLTAGE Vcc (V) VrF ~ IRF RR - IRF 15 ° f;=100H2 » berL ET TT] , fest TT TT 8 3 g Lt Tt tt = Lt | tt 5 é se 8 Z os 3 40 tt d 0 10 20 30 a 10 20 30 RIPPLE FILTER OUTPUT CURRENT Ie (mA) RIPPLE FILTER OUTPUT CURRENT Ig (mA) RR - Vcc lo - Vee : fT Ty yf .” rt ty ey = f,=100H2 Es s Vp= =32dev 3 [tf | | fem ce PE & ~ = PLN oe PE 5 we 3 I™N. 33 ea LENE 5 Be 3 60 DS 2 50) peti TEs | = EET | = 5 SERRE eee 80, 8 ol 074 75 2 25 ° oo 1 15 2 25 SUPPLY VOLTAGE Vcc (V) SUPPLY VOLTAGE Vcc (V) 1997-07-07 5/7
TA2015—N TOSHIBA “Sooo a 4 [Trt : EA aan PP) y Get y* HHH 3 Cee 8 EEE EE-EEEE g a2. gM eo =, “LLL! = ‘6 08) _ Pee CBS ee 3 ze - Se aa g oe Co a ==" : EEE eee ee ee =“ 2 04 : EEEEEEH i i P EEEEEEE EEE Peer g | @ EEEEEEEEEEH 5 ‘ ” . ° . : ° AMBIENT TEMPERATURE Ta (°C) AMBIENT TEMPERATURE Ta (°C) lo - Ta “cr 3 [T1114 Tex Fst CES wee | 5s Lorre e | wome EE i i eee EE e Pr 2 aoa = 2 “OEE & Fe
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@ JOCOCCCCCee 2 = - EERE aa i 8 re 2 “4 =F EEE a S| g COE eee ry y- dod 3 be “4 BCE » FERRER 4 * FARRER EEF 2 “ae el EE EEE EEE @ “OO “ : ‘. . AMBIENT TEMPERATURE Ta (°C) AMBIENT TEMPERATURE Ta (°C) 1997-07-07 6/7
SSOP10-P-0.65 Unit : mm 10 6 yan Ny 2 aE Jyrjy _|) Oy, i WOO 4 5 O.55TYP. .22+0.1 STE Sides 22801 SOD 4.0MAX 3.7+0.1 + = se fy AN o tomo | = a Sc 0.1) -8 2 a 0.45+0.2 i=} Weight : 0.04g (Typ.) OTT