TA8050AK TOSHIBA | Alldatasheet
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TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC The TA8050AK is a 1.5A bi-directional DC motor driver and it can switch forward, reverse, stop and brake mode 2 with input DI1 and DI2. Protective functions are built in Py to protect IC and load from destruction caused of over stress. > FEATURES | l j l | l © Bi-directional DC Motor Driver e@ 1.5A Current Capacity @ Low standby current : 100/A (Max.) HSIP7-P-2.54A, @ 4 Operation mode of forward, Reverse, Stop and Brake Weight : 2.2g (Typ.) © Built-in Protective Functions : Thermal-Shutdown Short-Circuit Protection Over-Voltage Protection @ Built-in Counter Electromotive Force Absorption Diodes @ HSIP 7 Pin Bushless Package BLOCK DIAGRAM AND PIN LAYOUT THERMAL- SHUTDOWN AND OVER-VOLTAGE PROTECTION - H SHORT- {| protection A 4 on pr M+) GND M(-) Nc Vee 961001EBA2 © TOSHIBA is continually working to improve the quality and the reliability of its products, Nevertheless, semiconductor devices in general can malfunction gr fal due to their inherent electrical senstvity and vulnerability to physical stress. tis the responsibility 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. @ The information contained herein is presented only as a guide for the applications ‘of our products. No responsibility 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 1998-02-10 1/8
| PIN No. | SYMBOL DESCRIPTION 1 oN . . igs This terminal controls output condition.
2 DI2
M(+) DC motor is connected to this terminal. The output current capacity is 1.5A. Diodes for counter electromotive force absorption are built in. [4 | GND Ground Terminal M(-) Motor is connected between 3 pin and this terminal. This terminal has the same function as 3 pin and is controlled by 1 pin and 2 pin. [e[ Wa [Non connection, SSCS 7 v Power supply terminal. When the voltage higher than 30.0V is supplied, the cc output becomes OFF to protect the IC and load. TRUTH TABLE a ce a ee ee OFF (High impedance) (Note) (Note) Brake mode comes into effect when both M(+) and M(-) go low. Stop mode comes into effect when both M(+)and M(-) turn OFF. 1998-02-10 2/8
DESCRIPTION OF MULTI-PROTECTIVE OPERATION The TA8050AK has 3 protective functions of over voltage (Vsp), over current (Isp), and thermal shut down (Tsp). The purpose of these functions is to protect IC (including motor load) from destruction caused of over stress. These functions operate independently. Description of these functions is shown below. Ce => ! | i i t i ono ' i 1. Over-Voltage Protection (Vsp) + Basic Operation When the supplied voltage to Vcc terminal is lower than the Vsp detection voltage, the output is controlled by the input signal and when this voltage is higher than the detection voltage, the output becomes high impedance unrelated to the input signal. + Detail Description Vsp voltage detection is performed by comparing the voltage of zener and Vcc. When the Vcc voltage is higher than the zener voltage, a transistor-off instruction is issued to the control logic. When it is lower than the Zener voltage, the logic is controlled by the input signals from DI1 and Di2. 2. Thermal-Shutdown (Tsp) + Basic Operation When the junction temperature (chip temperature) is lower than the Tsp detection temperature, the output is controlled by the input signal and when it is higher, the output becomes high impedance unrelated to the input signal. + Detail Description Temperature detection is performed by watching Vr of an element (diode) on the chip. When the Vr of the diode is lower than the inside reference voltage, the output is ordered to be OFF and when it is higher, the output is controlled by the input signal of 1 pin and 2 pin. 1998-02-10 3/8
- Over-Current Protection (Isp) + Basic Operation When the output current (3 pin or 5 pin, Isink or Isource) is lower than the Isp detection current, the output is controlled by the input signal and when it is higher, the output current flows intermittently as shown in Fig.1. ON ON ON ON 3.3A OR MORE OFF oFF oFF Le 20ysTyp. Fig.1 Basic Operation The short protective circuit operates when the current, higher than the Isp detection current, flows. + Detail Description Output current detection is performed by watching the Vge of the output transistors. An element for the detection is connected to each output Transistor and then connected to the short protective circuit operates. This circuit has a timer and when the over current condition is continued for 20ys (Typ.), the output becomes high impedance mode and after 80s (Typ.) it becomes ON again. At this time, if the over current condition is still continued, this switching mode is repeated until the over current condition is disappeared. 1998-02-10 4/8
MAXIMUM RATINGS (Ta =25°C) Supply Voltage 60 (1s) Vv Input Voltage -0.3~Vcc | Power Dissipation | Pp | 125 |W | Operation Temperature | Topr | -40~110 | °C _| Storage Temperature Lead Temperature Time 260 (10s) ELECTRICAL CHARACTERISTICS (Vcc =8~16V, Tc= -40~110°C) TEST CHARACTERISTIC SYMBOL jew | | TEST CONDITION fn. |r. |x UNIT CUIT lec! STOP(STANDBY) [| — [| — | 0.1] Power Supply Current —[Ic¢c2 Vec FORWARD/REVERSE| — | 40] 60] mA icc BRAKE b= [7 a0] input Volt [Yun Joi po = = T= Tay nut Voltage pe | [ap Dit Vin=0.4V [= | 10] 20] Input Current Fon | — fey [so] 170] 350] 8 Vest MC) io= tsa, Tense | — | 22] 29) Output Saturation Voltage (total) 1M (~) Io =1.5A, Te= 110°C | — | 22) 28] Vv Output Leakage Current LEEAK-U_|M (+) [Vour=ov_ | = | = [= 10] wtpur egakcage Surren® [iteak-t_| /M(-) Vout = VCC |= | = [10] # eu IMCs) C= 2s} — | Diodes Forward Voltage 7M(-) IF=1.5A [— | 15] — | v |Over-Current Detection [Isp | — | — | — 243.3] a2] A | Over-Voltage Detection [Vsp | — [| — | — T2730] 33] vv Thermal Resistance [Rye | — [— fo — | = Jat — [ecw Transfer Delay Time S a tow to * TOO 9998-02-10
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(e) Q Yop vec ouTPUT ports [ Gon Mi) ) TA8050AK oc za | 9 moor Port 2) Qo MC) 3) Vss GND oO (2) MICROPROCESSOR * Cautions for Wiring C1 is for absorbing disturbance, noise, etc. Connect it as close to IC as possible.
6 Pp MAX - Ta
@ 35cm?x2mmaL @ 1em2x2mmat lo | | @ No radiation pane 5 board 2 fT Th S : \\ PLN TT B 8 PENI ALL e LN Pb NIA 5 TS aN 0 50 700 150 200 AMBIENT TEMPERATURE Ta (°C) 1998-02-10 7/8
HSIP7-P-2.54A, Unit : mm 16,040.2 o 04 3 3.240.2 3. = 2 ——— TF ae a 3 SC) By a 3 iy xq g a ay & S \\ 3 | 40.4 O.88TYP | 0610.1 ESTE Jostie 1240.4 — 17.040.2 fm__f1im mm _mm_ 1 7 Weight : 2.2g (Typ.) mms ss B-02-10 8B