TA8051 | DigiCamel IC Datasheet

Online Datasheet

Read TA8051 online.

TA8051P TOSHIBA | Alldatasheet

Document overview

Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
PDF pages: 9

Technical content

TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC The TA8051P is a bidirectional DC motor driver with a current capacity of 3A. Inputs DI1 and DI2 are combined = to select one of forward, reverse, stop, and brake modes. ———- \\2 The inputs are TTL-compatible, and separate power (0) y _ supplies are provided for the logic and output sections. vy / - The IC also incorporates standby and various protective K - functions. 1} ae! iy | < } wi i | i FEATURES ] i i] yr @ Output current capacity : 3A (max.) i : @ Smal) standby current consumption : 100A (max.) HZIP12-P-1.78B © Separate Vcc supplies for output and logic control sections Weight : 4.09 (Typ.) @ Four modes : Forward, reverse, stop, and brake @ Multiple protective functions : Short-circuit protection, thermal shutdown, and overvoltage shutdown © Built-in diode for counteracting counter electromotive force @ Plastic package HZIP-12 pin BLOCK DIAGRAM AND PIN LAYOUT (o) oureur \\o) Losic < Fo E Se OOM OM OM OM OM OM OMOM OOM) DI DIZ ADJ M(+) N.C GND NC M(-) Vsp Vcc Vs ST 961001EBA2 @ TOSHIBA is continually working to improve the quality and the reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerablity to physical stress. itis the responsiblity of the buyer, when utilizing TOSHIBA products, to observe standards of safety, and to avoid situations in which a malfunction or failure of @ 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 ranger a: tet forth in the most racont products epecificatione. Alto, pleate keep in mind the precautions and conditione sot 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 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. 1998-02-10 1/9

1 Output status control pin. 2 | be Jesmeas toe moe wage computer, | | 2 | ast fre nes brates een PT Searle OS | Adj fei A value is increased by 1A (typically). Connects to the DC motor. Both the sink and the source have a current Dn Sereeceeeemeee” contained on the Vcc and GND sides. [S| We [Not connected SSCS [6 | Gno [Grounded SSS | ® | m-) [omthsnineontotedy the nove tom psd 2 | pin 4. This pin is controlled by the inputs from pins 1 and 2. Overvoltage detection pin. When a voltage higher than 27.5V (typically) is Vsp applied to this pin, the output turns off (enters stop mode) - Generally, the pin is directly connected to the Vcc pin (pin 10). If overvoltage protection is not needed, the pin is opened or grounded. [70 | Vec [Power supply pin for the output section SCC*S a s from the Vcc pin. When this pin is opened or grounded, the output turns off to reduce the > ae If standby mode is not needed, the pin connected to Vcc. DESCRIPTION OF MULTI-PROTECTIVE OPERATION The TA8051P has functions for protection from overvoltage (Vsp), overcurrent (Isp), and overheat (Tsp) . These functions protect the IC (and the motor load in some cases) from deterioration or destruction due to power-related overstress. The three functions work independently. Each function is explained below. piven [iso } i> imc ani) i i on op) telnet Li TOT 9-02-10

Overvoltage protection (VSD) @ Basic operation When the voltage supplied to the Vcc pin is up to the Vsp detection voltage, the output is controlled by the input signals. However, when the Vcc voltage exceeds the detection voltage, the output enters high-impedance state regardless of the input signals. @ Detailed explanation The Vsp voltage is detected by comparing the Zener voltage with the voltage obtained by dividing Vcc with a resistor. When the center voltage of the resistor 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 pins 1 and 2. 2. Overheat protection (Tsp) @ Basic operation When the junction (chip) temperature is up to the Tsp detection temperature, the output is controlled by the input signals. When it exceeds the Tsp detection temperature, the output enters high-impedance state regardless of the input signals. @ Detailed explanation The temperature is detected by monitoring Vf of a diode on the chip. When the diode Vr is lower than the internal reference voltage, an output transistor-off instruction is issued to the control logic. When it is higher than the internal reference voltage, the logic is controlled by the input signals from pins 1 and 2. 3. Overcurrent protections (Isp) @ Basic operation When the output current (pin 4 or 8, Isink OF Isource) is up to the Isp detection current, the output is controlled by the input signals. When it exceeds the detection current, the output assumes a switching waveform as shown in Fig.1. ON ON ON ON SA or more —> im lL] te tou typ. +f 20ys Typ. Fig.1 Basic Operation 1998-02-10 3/9

@ Detailed explanation The output current is detected by monitoring the Vgg from each output transistor. One detection circuit connects to one of the output transistors and leads to the short-circuit protection circuit. When a current exceeding the Isp detection current flows through one of the four output transistors, the short-circuit protection circuit is activated. This circuit contains a timer. When overcurrent condition continues for 20js (typically), the protection circuit places the output in high-impedance mode and, 80s (typically) later, returns the IC to ON mode. The switching-waveform output is repeated until overcurrent condition is no longer present. 1998-02-10 4/9

MAXIMUM RATINGS (Ta = 25°C) CHARACTERISTIC SYMBOL RATING Supply Voltas [Power Dissipation ‘| Pp | 25 w ELECTRICAL CHARACTERISTICS (Vcc =6 to 16V, Tc= -40 to 110°C) TEST [ cremcrenne pao rw [EE] re conomon [sn] | nt | ur CUIT on Pst) = [op (yen Sonsumetion Figg] vs | = [Forward7Reverse [=| 20 | a0 [sg | [= erake 20 | a | ; | = stop anyon consumption Vec [= [Forward /Reverse [=| 16 | 0 [ices | [= [Brake = Ly for | input Volese porf— [eo P| nous cures Fle OH = wens aot | Pig | ore = [iyeVee = 10] Lv | sr | input Voltage SS nous covert fle] or [= fete = aa a A Ae Output Saturation | Vsat [M(+) |= fig=tsa | fan | 2al Voltage total |/M(=)[ = fige30a = 3 [a ligaK-ulM(+) [= [Vozov | =| | =100| Output Leakage Cure Ti eacL|/M(-)[ — [Vo=Vee | — | — | 100] “A [vu [M(+) [= [ipe30a ST — | so = | piece Fonwerd Votes im (—)—Tigpea.9a ts | orerentomeston [0 [== agree = Te] Overcurrent Detection 1 7 A so [=| = [adj= eno [=| 6| = | [shutdown Temperature [Tp | — [= is |e Jovervottage Detection [Vsp [| — [=| 25 ars | a0 Vv pemacirens fs | EL | = | = | el | [Thermal Resistance [Rye | — [=f | er ime Lo — TT

a Pav a < Ho © Infinite radiation ee SS RS a3 2 “TEN EAREE ES Lo yE RS 22 Ls a| ° . \\ Fey Eg ee OUTPUT CURRENT Igut (A) AMBIENT TEMPERATURE Ta (°C) a Vsp - Te 5 Isp - Te ELE T TTT yy Pit tt yy et ae a a ee FTE] | tt eg [ttt | go frre y | | tf efit tt | eS ee se Litt tt tt | BJP ons es i CASE TEMPERATURE Tc (°C) CASE TEMPERATURE Tc (°C) BT OO

EXAMPLE OF APPLICATION CIRCUIT 1. Standard Circuit Vv @_@ Gy Fe Vs Vso Yee O qa mo Yop cu a @ Gon TA8051P &y system —_ 7 Ves PO e Q) viz m(-) [8 © ond 2. Power Supply Separation and Standby Functions v sv G)_ ©) Gy fe O Vs Vsp Voc YoD pot ps 7 m(+) [® cpu 702 {OD @Jon TA8051P @ sysTeM — vss 73 O Q} oi m(-) 1) GND O a) 1998-02-10 8/9

Product Information

TA8051 specifications and overview.

Summary

3A MOTOR DRIVER WITH BRAKE FUNCTION

Description

3A MOTOR DRIVER WITH BRAKE FUNCTION

Source title TA8051 Datasheet(PDF) - Toshiba Semiconductor

Related Parts

More parts from the same family.

Browse manufacturer