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TEF3718 TEF3718S
STEPPER MOTOR DRIVER
.HALF .BI .BUI .WI .WI .DESI .CURRENT .THERMAL .ALARM
AND FULL-STEP MODES POLAR DRIVE OF STEPPER MOTOR FOR MAXIMUM MOTOR PERFORMANCE LT-IN PROTECTION DIODES DE RANGE OF CURRENT CONTROL : 5 TO 1500 mA DE VOLTAGE RANGE : 10 TO 50 V GNED FOR UNSTABILIZED MOTOR SUPPLY VOLTAGE LEVELS CAN BE SELECTED IN STEPS OR VARIED CONTINUOUSLY OVERLOAD PROTECTION OUTPUT (TEF3718SP) OR PREALARM OUTPUT (TEF3718SSP)
POWERDIP 12 + 2 + 2 ORDER CODE : TEF3718DP TEF3718SDP
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. PIN CONNECTON
TEF3718
MULTIWATT 15 ORDER CODE : TEF3718SP TEF3718SSP
TEF3718S
TEF3718 TEF3718S
October 1991
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TEF3718-TEF3718S
BLOCK DIAGRAM (TEF3718)
BLOCK DIAGRAM (TEF3718S)
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TEF3718-TEF3718S
ABSOLUTE MAXIMUM RATINGS
Symbol VCC VMM VI Supply Voltage Input Voltage : Logic Inputs Analog Inputs Reference Input Input Current : Logic Inputs Analog Inputs Output Current Junction Temperature Operating Ambient Temperature Range Storage Temperature Range Parameter Value 7 50 6 VCC 15 mA 10 10 1.5 + 150 - 40 to + 85 - 55 to 150 A C C C Unit V V
II
IO Tj Toper Tstg
THERMAL CHARACTERISTICS
Symbol Parameter Rth(j-c) Maximum Junction-case Thermal Resistance POWERDIP MULTIW Rth(j-a) Maximum Junction-ambient Thermal Resistance POWERDIP MULTIW Value 11 3 C/W 45 (*) 40 Unit C/W
(*) Soldered on a 35 m thick 20 cm2 PC board cooper area.
RECOMMENDED OPERATING CONDITIONS
Symbol VCC Supply Voltage VMM Im Output Current Tamb tr tf Ambient Temperature Rise Time Logic Inputs Fall Time Logic Inputs Parameter Min. 4.75 10 0.020 - 40 - - Typ. 5 - - - - - Max. 5.25 45 1.2 85 2 2 Unit V A C s s
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TEF3718-TEF3718S
ELECTRICAL CHARACTERISTICS VCC = 5 V 5 %. VMM = - 10 V to + 45 V. Tamb = - 40 C to + 25 C (Unless otherwise specified)
Symbol ICC VIH VIL IIH IIL VCH VCM VCL ICO Ioff Vsat Ptot toff td Vsat Iref Vsat Supply Current High Level Input Voltage Logic Input Low Level Input Voltage Input High Level Input Current Logic Input (VI = 2.4 v) Low Level Input Current Logic Input (VI = 0.4 v) Comparator Treshold Voltage (VR = + 5 V) IO = 0 I1 = 0 IO = 1 I1 = 0 IO = 0 I1 = 1 0.4 390 230 65 -- 20 POWERDIP MULTIWATT 3.1 25 30 1.6 0.8 0.4 Im = 0.5 A MULTIWATT Im = 1 A Im = 0.5 A Im = 1 A POWERDIP Diode Forward Voltage If = 0.5 A If = 1 A If = 1 A Im = 0.5 A MULTIWATT Im = 1 A Im = 0.5 A Im = 1 A POWERDIP Vf Diode Forward Voltage If = 0.5 A If = 1 A 1.5 1.8 1.5 1.7 10 1.35 1.55 1.25 1.35 mA 1 1.35 1.75 1.25 1.55 420 250 80 440 270 90 20 100 2.9 3.3 3.6 35 2 0.7 20 Characteristics Min. Typ. Max. 25 Unit mA V V A A mV
Comparator Input Current Output Leakage Current (IO 1, I1 = 1) Total Saturation Voltage Drop (Im = 1 A,) Total Power Dissipation (Im = 1 A, fs = 30 kHz) Cutt off Time (see figures 1 and 2 Vmm = +10 V, Vton 5 s) Turn off Delay (see figures 1 and 2, Tamb = + 25 C dVC/dt 50 mV/s Alarm Output Saturation Voltage IO = 2 mA Reference Input Current, VR = 5 V Source Diode Transistor Pair
A A V W s s V mA mA
Saturation Voltage Vf
Isub
Substrate Leakage Current Sink Diode Transistor Pair
Vsat
Saturation Voltage
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TEF3718-TEF3718S
Figure 1.
Figure 2.
RS = 1 inductance free RC = 470 CC = 820 pF ceramic Rt = 56 k Ct = 820 pF ceramic P = 500 R2 = 1 K
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TEF3718-TEF3718S
MULTIWATT15 PACKAGE MECHANICAL DATA
DIM. MIN. A B C D E F G G1 H1 H2 L L1 L2 L3 L4 L7 M M1 S S1 Dia1 21.9 21.7 17.65 17.25 10.3 2.65 4.25 4.63 1.9 1.9 3.65 4.55 5.08 17.5 10.7 22.2 22.1 0.49 0.66 1.02 17.53 19.6 20.2 22.5 22.5 18.1 17.75 10.9 2.9 4.85 5.53 2.6 2.6 3.85 0.862 0.854 0.695 0.679 0.406 0.104 0.167 0.182 0.075 0.075 0.144 0.179 0.200 0.689 0.421 0.874 0.870 1.27 17.78 1 0.55 0.75 1.52 18.03 0.019 0.026 0.040 0.690 0.772 0.795 0.886 0.886 0.713 0.699 0.429 0.114 0.191 0.218 0.102 0.102 0.152 0.050 0.700 mm TYP. MAX. 5 2.65 1.6 0.039 0.022 0.030 0.060 0.710 MIN. inch TYP. MAX. 0.197 0.104 0.063
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TEF3718-TEF3718S
POWERDIP 16 PACKAGE MECHANICAL DATA
DIM. MIN. a1 B b b1 D E e e3 F I L Z 3.30 1.27 8.80 2.54 17.78 7.10 5.10 0.130 0.050 0.38 0.51 0.85 0.50 0.50 20.0 0.346 0.100 0.700 0.280 0.201 0.015 1.40 mm TYP. MAX. MIN. 0.020 0.033 0.020 0.020 0.787 0.055 inch TYP. MAX.
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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. (c) 1994 SGS-THOMSON Microelectronics - All Rights Reserved MULTIWATT(R) 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.
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