TA7612AP TOSHIBA | Alldatasheet

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TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC The TA7612AP is designed for 10 LED level meter diriver.

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© 10 LED'S Bar Display Driver. we art © Linear Scale Display. Nees \\ t f © Continuous 10 LED Display. \\ @ By Choosing a Series Connection of IC, Can Display more than 10 LED. DIP16-P-300-2.54A Weight : 1.00g (Typ.) BLOCK DIAGRAM a eno () <q @®) vin Vref Min. ion (5) Vret Max. ° iE ZS ° ° eta aml ” : PHEPY ° voa ©) at | Be €) vos Vos patie} Vor 961001EBA2 © TOSHIBA is continually working to improve the quality and the reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fall due to thei inherent electrical sensitivity and, vulnerability to physical stres. itis the responsibilty of the buyer, when utlizing 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 developing. 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. @ The products described in this document are subject to foreign exchange and foreign trade control laws. © ‘he information contained herein 's presented only as a guide for the applications of our products. No_ responsibilty is assumed by, TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted 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. 1997-07-07 1/6

(Note) (Vref Max. (= PIN) = 3.6V) Terminated Ground [Lighted All LED With Ligh’ No.1 Terminated 1kQ Between Ground Pp CALCULATION AT 10LEDs Pp=Vccx!cc1+VOLx!ox10 (W) ec BEOLOKOLONO) 5 ® gi s eT 37 re? O-~O-O-~O-O-® 5 2 (Note) VoL is : VoL=Vcc- VF (LED) -RLxI9 (When each output is “ON”.) Pp - Ta

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ge “ETT TPMT TPT ry ty

2 CECE SSH

3 TTT TTT ttt

= opti tt ti ttt rw | 0 20-40 ~ 60 BO «0D «20«a]~ 160 AMBIENT TEMPERATURE Ta (°C) TTT TT 1997-07-07 2/6

Fan © sata © aan © dates © cates © fas © sata, © dates © saan © satan © sates © teen © ehcicaieenenmenmanaane i 14 3 H ' comparator! A AAAAALAAAA | Coo ' TO kD EDD KD KKK KD 1 i i i 1 Hl 2 1 8 16 ! ne @ anne @ Senn: @ Sennen @ iE} w Ss (*) Va=Vref Min. Voltage vA 32 S Vg=Vref Max. Voltage VIN The above simplified TA7612AP Block Diagram is to give the general idea of the circuit's operation. 1. General Operation If Vin Voltage greater than the first threshold but less than the second threshold is applied “No.1” LED is lighted, if the input voltage is between the second and the third threshold, then ‘No.1 and No.2’ LED are in operation and so on. 2. Adding R1 and R2 Operation These resistors are to give the reference voltage of 10 comparators. And then above Vg - Va is to give the Input Voltage sensitivity of this device. Ry and R2 will be calculated as follows. Ry, +R2+90. XNCCENA R2+90 Ry +R2+90 Nec =VB 2) From (1) and (2) 9 (Vec-V Rye SCC=VB) (KO). eee 8) VB-VA NV, VB-VA 1997-07-07 3/6

MAXIMUM RATINGS (Ta = 25°C) CHARACTERISTIC SYMBOL RATING UNIT Supply Voltage Power Dissipation (Note) | Pp | 750 mW | Operating Temperature -30~75 (Note) Derated above Ta =25°C in the proportion of 6mW/°C. ELECTRICAL CHARACTERISTICS (Ta = 25°C, Vcc = 12V) TEST CHARACTERISTIC SYMBOL TEST CONDITION jan ve. |x UNIT CUIT Suppy voltage | vee | — | =~ 6] ep Supply Current (1) | Icer | = |Vret=4V, Viv=0V = [5-20 | ma Vref =4V, Vin=4.1V Supply Current (2) lec2 | - | Io = 10mA x 10 150 Taput Bias Current or f=] [internal Resistance | in | — |Win=GND | | 05) 1 | aa input Voltage Range | Vn [=| = —*+dY of} — | | v_| Output Voltage Vref =4V, Vin=GND (High Level) Vou RE =1.5k0 11.9 | 11.93 v Output Voltage Vref =4V, Vin =4.10V (Low Level) VoL RL =1.5kO v [output Current | 1p | = |Vret= av, Vin=atov | | feoccurere | [= Wiiritaeov veraneo | = | = | | «4 | Leak Current I | - | uA It Vref Max =0V, Vref Min =0V é 1997-07-07 4/6

@ 10 LEDs Applications = Light in the direction S me CHK MHD OD} 7iits be Guo ° @ 20 LEDs Applications = Light in the direction

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DIP16-P-300-2.54A Unit : mm rs) 16 9 3 Cy) od) OP) | ag | | aa o pu 19.75MAX 0.9 LU a7—2 yr ot og MIE EE eS z 2 Weight : 1.00g (Typ.) 1997-07-07 610