TEF3718 TEF3718S STEPPER MOTOR DRIVER .. .. .. . .. HALF AND FULL-STEP MODES BIPOLAR DRIVE OF STEPPER MOTOR FOR MAXIMUM MOTOR PERFORMANCE BUILT-IN PROTECTION DIODES WIDE RANGE OF CURRENT CONTROL : 5 TO 1500 mA WIDE VOLTAGE RANGE : 10 TO 50 V DESIGNED FOR UNSTABILIZED MOTOR SUPPLY VOLTAGE CURRENT LEVELS CAN BE SELECTED IN STEPS OR VARIED CONTINUOUSLY THERMAL OVERLOAD PROTECTION ALARM OUTPUT (TEF3718SP) OR PREALARM OUTPUT (TEF3718SSP) DESCRIPTION The TEF3718 and TEF3718S are bipolar monolithic integrated circuits intended to control and drive the current in one widing of a bipolar stepper motor. The circuits consists of an LS-TLL - compatible logic input, a current sensor, a monostable and an output stage with built-in protection diodes. Two TEF3718 or TEF3718S and a few external components form a complete control and drive unit for LS-TTL or microprocessor controlled stepper motor systems. POWERDIP 12 + 2 + 2 ORDER CODE : TEF3718DP TEF3718SDP MULTIWATT 15 ORDER CODE : TEF3718SP TEF3718SSP PIN CONNECTON TEF3718 October 1991 TEF3718S TEF3718 TEF3718S 1/8 TEF3718-TEF3718S BLOCK DIAGRAM (TEF3718) BLOCK DIAGRAM (TEF3718S) 2/8 TEF3718-TEF3718S ABSOLUTE MAXIMUM RATINGS Symbol VCC VMM VI II Parameter Supply Voltage Value Unit 7 50 V V Input Voltage : Logic Inputs Analog Inputs Reference Input 6 VCC 15 Input Current : Logic Inputs Analog Inputs 10 10 mA IO Output Current ± 1.5 A Tj Junction Temperature + 150 C Operating Ambient Temperature Range – 40 to + 85 °C Storage Temperature Range – 55 to 150 °C Value Unit °C/W Toper Tstg THERMAL CHARACTERISTICS Symbol Parameter Rth(j-c) Maximum Junction-case Thermal Resistance POWERDIP MULTIW Rth(j-a) 11 3 °C/W Maximum Junction-ambient Thermal Resistance POWERDIP MULTIW 45 (*) 40 (*) Soldered on a 35 µm thick 20 cm2 PC board cooper area. RECOMMENDED OPERATING CONDITIONS Symbol VCC Supply Voltage VMM Im Output Current Parameter Min. Typ. Max. Unit 4.75 10 5 – 5.25 45 V 0.020 – 1.2 A Tamb tr Ambient Temperature Rise Time Logic Inputs – 40 – – – 85 2 °C µs tf Fall Time Logic Inputs – – 2 µs 3/8 TEF3718-TEF3718S ELECTRICAL CHARACTERISTICS VCC = 5 V ± 5 %. VMM = – 10 V to + 45 V. Tamb = – 40 C to + 25 °C (Unless otherwise specified) Symbol Characteristics Min. Typ. Max. Unit 25 mA ICC Supply Current VIH High Level Input Voltage Logic Input VIL Low Level Input Voltage Input 0.7 V IIH High Level Input Current Logic Input (VI = 2.4 v) 20 µA IIL Low Level Input Current Logic Input (VI = 0.4 v) 440 270 90 mV 2 V µA 0.4 Comparator Treshold Voltage (VR = + 5 V) ICO Comparator Input Current Ioff Output Leakage Current (IO 1, I1 = 1) Vsat Total Saturation Voltage Drop (Im = 1 A,) Ptot Total Power Dissipation (Im = 1 A, fs = 30 kHz) toff Cutt off Time (see figures 1 and 2 Vmm = +10 V, Vton ≤ 5 µs) td Turn off Delay (see figures 1 and 2, Tamb = + 25 °C dVC/dt ≤ 50 mV/µs 1.6 Vsat Alarm Output Saturation Voltage IO = 2 mA 0.8 Iref Reference Input Current, VR = 5 V 0.4 Vsat Source Diode Transistor Pair IO = 0 I1 = 0 IO = 1 I1 = 0 IO = 0 I1 = 1 — 20 POWERDIP MULTIWATT µA µA 2.9 3.3 V 3.1 3.6 W 30 35 µs µs V mA Im = 0.5 A MULTIWATT Im = 1 A 1.35 1.75 mA Im = 0.5 A Im = 1 A 1.25 1.55 Diode Forward Voltage If = 0.5 A If = 1 A 1.5 1.7 Substrate Leakage Current If = 1 A 10 Vf POWERDIP Sink Diode Transistor Pair Vsat 25 20 100 1 Saturation Voltage Isub 390 230 65 420 250 80 VCH VCM VCL Im = 0.5 A MULTIWATT Im = 1 A 1.35 1.55 Im = 0.5 A Im = 1 A 1.25 1.35 If = 0.5 A If = 1 A 1.5 1.8 Saturation Voltage POWERDIP Vf 4/8 Diode Forward Voltage mA TEF3718-TEF3718S Figure 1. Figure 2. RS = 1 Ω inductance free RC = 470 Ω CC = 820 pF ceramic Rt = 56 kΩ Ct = 820 pF ceramic P = 500 Ω R2 = 1 K 5/8 TEF3718-TEF3718S MULTIWATT15 PACKAGE MECHANICAL DATA mm DIM. MIN. TYP. MAX. MIN. TYP. MAX. A 5 0.197 B 2.65 0.104 C 1.6 0.063 D 1 0.039 E 0.49 0.55 0.019 0.022 F 0.66 0.75 0.026 0.030 G 1.02 1.27 1.52 0.040 0.050 0.060 G1 17.53 17.78 18.03 0.690 0.700 0.710 H1 19.6 0.772 H2 6/8 inch 20.2 0.795 L 21.9 22.2 22.5 0.862 0.874 0.886 L1 21.7 22.1 22.5 0.854 0.870 0.886 L2 17.65 18.1 0.695 L3 17.25 17.5 17.75 0.679 0.689 L4 10.3 10.7 10.9 0.406 0.421 L7 2.65 2.9 0.104 0.713 0.699 0.429 0.114 M 4.25 4.55 4.85 0.167 0.179 0.191 M1 4.63 5.08 5.53 0.182 0.200 0.218 S 1.9 2.6 0.075 0.102 S1 1.9 2.6 0.075 0.102 Dia1 3.65 3.85 0.144 0.152 TEF3718-TEF3718S POWERDIP 16 PACKAGE MECHANICAL DATA mm DIM. MIN. a1 0.51 B 0.85 b b1 TYP. inch MAX. MIN. TYP. MAX. 0.020 1.40 0.033 0.50 0.38 0.020 0.50 D 0.055 0.015 0.020 20.0 0.787 E 8.80 0.346 e 2.54 0.100 e3 17.78 0.700 F 7.10 0.280 I 5.10 0.201 L Z 3.30 0.130 1.27 0.050 7/8 TEF3718-TEF3718S Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. © 1994 SGS-THOMSON Microelectronics - All Rights Reserved MULTIWATT® is a Registered Trademark of the SGS-THOMSON Microelectronics SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore Spain - Sweden - Switzerland - Taiwan - Thaliand - United Kingdom - U.S.A. 8/8