TA8068F TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC TA8068F Intelligent Stepping Motor Driver The TA8068F is a stepping motor driver with a current capacity of 1.5A. Inputs INA and INB are combined to control the four outputs. Since the inputs are TTL-compatible, this IC can be controlled directly from a CPU or other control system. The IC also incorporates various protective functions as well as a self-diagnostic function for diagnostic function for diagnostic output. FEATURES · Output current capacity : 1.5 A (max) · Low standby current : 0.1 mA (max) · Built−in Protective Functions : Over-Voltage Protection/ Short-Circuit Protection(latch) / Thermal-Shutdown · Self−diagnostic Output · Recommended operating supply voltage range : VCC = 8~16 V · Separate GND for output and logic control sections · HSOP20-Pin Power Flat Pakage Weight: 0.79 g (typ.) : On Short-Circuit Detection BLOCK DIAGRAM AND PIN LAYOUT R LATCH S R CONTROL LOGIC MULT PROTECTION R 1 4 5 6 7 10 14 15 16 17 20 VCC ST INA OA OA P-GND OB OB INB L-GND DG 1 2002-02-27 TA8068F PIN DESCRIPTION PIN No. SYMBOL DESCRIPTION 1 VCC Power supply pin. This pin has a function to turn off the output when the applied voltage exceeds 30V (Typ.), thus protecting the IC and the motor load. 4 ST When this pin is opened or grounded, the output turns off, thus reducing the current consumption to 100µA or less. If standby mode is not needed, the pin is connected to VCC. 5 INA This is input terminal which controls output condition of pin 6 and pin 7. PNP-type voltage comparator is built in. 6 OA PNP-type complementary output pin with a current capacity of 1.5A. This pin is controlled by the input from pin 5. When the output is supplied with a current exceeding the detection current (4A Typ.) because of load short-circuit, the output is latched to the OFF state after a 50µs (Typ.) delay in order to protect the IC. 7 OA Output pin of the inversion of pin 6. This terminal has the same function as pin 6 and is controlled by pin 5. 10 P-GND 14 OB Output pin of the inversion of pin 15. This terminal has the same function as pin 6 and is controlled by pin 16. 15 OB This terminal has the same function as pin 6 and is controlled by pin 16. 16 INB This is input terminal which controls output condition of pin 14 and pin 15. PNP-type voltage comparator is built in. 17 L-GND 20 DG Self-diagnostic output pin. This signal goes low when the output is short-circuited while the input is on (high). The output will be latched after a 50µs (Typ.) delay when the load is short-circuited.This pin supplies an NPN open-collector output. 2, 3, 8, 9, 11, 12, 13, 18, 19 N.C Not connected. (Electrically, this pin is completely open.) Ground terminal of output section which is usually connected with pin 17. Ground terminal of logic control section which is usually connected with pin 10. TIMING CHART INA INB OA OB OA OB 4 A (typ.) IO (OA) DG 50 µs Delay ST Normal Short -Circuit 2 Normal 2002-02-27 TA8068F TRUTH TABLE INPUT / OUTPUT INPUT OUTPUT INA INB ST OA OA OB OB DG L L H OFF ON OFF ON OFF L H H OFF ON ON OFF OFF H L H ON OFF OFF ON OFF H H H ON OFF ON OFF OFF ― ― L OFF OFF OFF OFF OFF ― ― OPEN OFF OFF OFF OFF OFF MAXIMUM RATINGS (Ta = 25°C) CHARACTERISTIC SYMBOL RATING VCC 30 VCC 60 (1s) VIN −0.3~7 V Output Voltage VOUT −0.3~VCC V Output Current IO·AVE 1.5 (*1) A Power Dissipation PD 2.0 (*2) W Operation Temperature Topr Storage Temperature Lead Temperature−Time Supply Voltage Input Voltage UNIT V −40~110 °C Tstg −55~150 °C Tsol 260 (10s) °C Note *1: Maximum current value when an infinite heat sink is used. Please refer to the table “MAXIMUM OUTPUT CURRENT (RECOMMENDED VALUES FOR APPLICATION)” when designing an application circuit. Note *2: 50 × 50 × 1.6 mm 50% Cu mounted HSOP20-P-450-1.00 THERMAL RESISTANCE DATA (Ta = 25°C) CHARACTERISTIC TEST CONDITION RATING UNIT Rθ j-a ― 125 °C/W Rθ j-c ― 13 °C/W PD1 Without radiation board 9.6 W PD2 50 × 50 × 1.0 mm Iron board mounted 3.2 W PD3 50 × 50 × 1.6 mm 50% Cu mounted 2.0 W PD4 Without radiation board 1.0 W 3 2002-02-27 TA8068F MAXIMUM OUTPUT CURRENT (RECOMMENDED VALUES FOR APPLICATION) Ambient Temperature Ta (°C) 25 85 105 Heat Radiation Condition Allowable Rating (DC) Power dissipation Output current (W) (mA) Allowable Power Dissipation (pulse: 10 sec) Power dissipation Output current (W) (mA) IC itself 1.0 330 2.9 1000 Using a board (PD3) 2.0 720 3.9 1040 IC itself 0.52 50 1.5 550 Using a board (PD3) 1.04 350 2.0 720 IC itself 0.36 0 1.0 330 Using a board (PD3) 0.72 150 1.4 500 VCC = 16 V. Output current is defined by the maximum current in one channel. ELECTRICAL CHARACTERISTICS (VCC = 8~16 V, Tc = −40~110°C,unless otherwise specified) CHARACTERISTIC Current Consumption Input Voltage Input Current Input Voltage SYMBOL PIN TEST CIRCUIT TEST CONDITION MIN TYP. MAX UNIT ICC VCC ― ― 12 25 40 mA ― ― ― ― 0.8 ― ― 2.4 ― ― VIL VIH IIL IIH VIL VIH INA/INB INA/INB ST ― VIN = 0.4 V ― VIN = 5 V −50 ― ― ― ― 10 ― ― ― ― 0.8 ― ― 3.0 ― ― V µA V Output Saturation Voltage VSAT OA, OA OB, OB ― IO = 1.5 A/Ta = 25°C ― 1.25 1.5 V Output Leakage Current ILEAK OA, OA OB, OB ― VO = VCC ― ― 10 µA ― IOL = 3 mA ― ― 0.3 V ― VO = VCC ― ― 10 µA A Output Voltage Output Leakage Current Over-current Detection VOL ILEAK DG ISD ― ― 1.8 4 6 TSD-H ― ― OUT = ON → OFF ― 160 ― TSD-L ― ― OUT = OFF → ON ― 130 ― Over-voltage Detection VSD ― ― 27.5 30 33 V Standby Current IST VCC ― ― ― 100 µA tpLH ― ― ― ― 1 10 tpHL ― ― ― ― 1 10 Shutdown Temperature Transfer Delay Time ― ― ST = GND °C µs Note: The parameter values above are guaranteed in the operating voltage rage of 8 V to 16 V. If the guaranteed range is exceeded in practical use, make sure that the IC operates normally in application. 4 2002-02-27 VOL – IOUT PD max – Ta 10 2.0 PD1 (W) 9.6 1.5 MAXIMUM POWER DISSIPATION PD max OUTPUT SATURATION VOLTAGE VOL (V) TA8068F Tc = −40°C 1.0 110°C 25°C 0.5 0 0 0.5 1.0 1.5 OUTPUT CURRENT IOUT (A) 8 6 4 3.2 2 1 PD2 PD3 PD4 0 0 50 100 150 200 AMBIENT TEMPERATURE Ta (°C) VSD – Tc ISD – Tc 5 ISD 35 DETECTION CURRENT DETECTION VOLTAGE VSD (V) (A) 40 30 25 20 −40 0 40 80 CASE TEMPERATURE Tc 4 3 2 1 0 −40 120 (°C) 0 40 80 CASE TEMPERATURE Tc 5 120 (°C) 2002-02-27 TA8068F EQUIVALENT CIRCUIT OA 7 OA 6 OB 14 OB 15 P-GND 10 THERMALSHUTDOWN OVER-VOLTAGE PROTECTION CONTROL LOGIC SHORTCIRCUIT PROTECTION DG 20 CONSTANT VCC 1 VOLTAGE INA 5 INB 16 ST 4 L-GND 17 APPLICATION CIRCUIT V 5V RS CPU PO1 SYSTEM PO2 VSS PO3 10 µF* 10 kΩ VDD 10 Ω VCC DG ST OA OA TA8068F SM OB INA INB L-GND P-GND OB *: Connect this capacitor as close to the IC as possible 6 2002-02-27 TA8068F PACKAGE DIMENSIONS Weight: 0.79 g (Typ.) 7 2002-02-27 TA8068F RESTRICTIONS ON PRODUCT USE 000707EAA_S · TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can 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 comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products 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 TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability Handbook” etc.. · 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. 8 2002-02-27