TEA3718SFP STMicroelectronics, TEA3718SFP Datasheet
TEA3718SFP
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TEA3718SFP Summary of contents
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... January 2009 Power DIP 12+2+2 Figure 1. COMPARATOR INPUT PHASE PULSE TIME REFERENCE Package TM: Multiwatt is a trademark of STMicroelectronics Rev 2 TEA3718 Stepper motor driver SO20 Multiwatt™ 15 Block diagram Motor winding OUT A OUT B ALARM (TEA3718SP) PRE-ALARM TEA3718 (TEA3718SFP) IN0 IN1 SENSE RESISTOR 1/26 www.st.com 26 ...
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... Pin connections 1 Pin connections Figure 2. Package pin locations (top views) E-TEA3718SP (Multiwatt 15) 2/26 E-TEA3718SFP E-TEA3718DP (SO20) E-TEA3718SDP (Power DIP 12+2+2) ...
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... Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.3 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4 Functional blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.1 Alarm output (TEA3718SP, TEA3718DP and TEA3718SDP 4.2 Pre-alarm output (TEA3718SFP 4.3 Current reduction in alarm condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.4 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 5.1 Input logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 5.2 Phase input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 5 ...
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Contents 6 Application notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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... Device diagrams Figure 3. Detailed block diagram (TEA3718SFP) Figure 4. Detailed block diagram (TEA3718SP) Device diagrams 5/26 ...
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... and the two inputs IN0 and IN1 determines the S o reaches T1 C the alarm output becomes low (TEA3718SP reaches T2 C the pre-alarm output becomes low (T2<T1) (TEA3718SFP) j Package Power DIP 12+2+2 SO20 Multiwatt 15 Power DIP 12+2 Alarm Pre-alarm Not connected ...
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Electrical specifications 3.1 Absolute maximum ratings Table 4. Absolute maximum ratings Symbol V SS Supply voltage V S Input voltage: – logic inputs V I – analog inputs – reference input Input current: i – logic inputs i – ...
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Electrical specifications 3.3 Thermal data Table 6. Thermal data Symbol Parameters R (j-c) Maximum junction-case thermal resistance th R (j-a) Maximum junction-ambient thermal resistance Soldered µm thick 4 cm Figure 5. Maximum power dissipation ...
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Figure 7. Output waveforms Electrical specifications 9/26 ...
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... Source diode forward voltage f I Substrate leakage current sub Sink diode transistor pair Vsat(sink) saturation V (sink diode) Sink diode forward voltage Vss = 5 V, ± 5%, Vmm = 45V, Tamb = 0 to 70oC (Tamb = 25 2. Values in parentheses apply only to E-TEA3718SFP and E-TEA3718SFPTR mounted in SO20 package. 10/26 (1) Parameter ...
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Figure 8. Sink driver V sat against I CE Figure 9. Lower diode V against I f Figure 10. Source driver V CE and T out j and T OUT j sat against I and T OUT j Electrical specifications ...
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Electrical specifications Figure 11. Upper diode V Figure 12. I against junction temperature ref Figure 13. Comparator input current against T 12/26 against I and T f OUT j and ...
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... Functional blocks Figure 14. Alarm output (TEA3718SP) Figure 15. Pre-alarm output (TEA3718SFP) Functional blocks 13/26 ...
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Functional blocks 4.1 Alarm output (TEA3718SP, TEA3718DP and TEA3718SDP) The ALARM output pin becomes low when the junction temperature reaches T ° C. When an alarm condition occurs, parts of the supply voltage (dividing bridge comparator input ...
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... Figure 17. Common detection for several Multiwatt packages 4.2 Pre-alarm output (TEA3718SFP) When the junction temperature reaches T1° C (typically = 170 ° pre-alarm signal is generated on the PRE-ALARM output pin. Soft thermal protection occurs when function temperature reaches T2 (T2 > T1). 4.3 Current reduction in alarm condition ...
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Functional blocks Figure 19. Half-current on alarm condition circuit (V 4.4 Typical application Figure 20. Typical application circuit 16/ ref = ...
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Functional description The circuit is intended to drive a bipolar constant current through one motor winding. The constant current is generated through switch mode regulation. There is a choice of three different current levels with the two logic inputs ...
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Functional description 5.4 Single-pulse generator The pulse generator is a monostable triggered on the positive going edge of the comparator output. The monostable output is high during the pulse time, t timing components R The single pulse switches off the ...
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Application notes 6.1 Motor selection Some stepper motors are not designed for continuous operation at maximum current. As the circuit drives a constant current through the motor, its temperature might increase excessively both at low and high speed operation. ...
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Application notes 6.4 Operating sequence Figure 22. Principal operating sequence 20/26 ...
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Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: ECOPACK® ...
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Package mechanical data 22/26 ...
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Package mechanical data 24/26 ...
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Revision history Table 9. Document revision history Date 24-Jan-2006 21-Jan-2009 Revision 1 Initial release. Document reformatted. 2 Figure 1 Added . Revision history Changes 25/26 ...
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... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...