E-TEA3718DP STMicroelectronics, E-TEA3718DP Datasheet

IC STEPPER MOTOR DVR 16-POWERDIP

E-TEA3718DP

Manufacturer Part Number
E-TEA3718DP
Description
IC STEPPER MOTOR DVR 16-POWERDIP
Manufacturer
STMicroelectronics
Type
Stepper Motor Controllerr
Datasheet

Specifications of E-TEA3718DP

Applications
Stepper Motor Driver
Number Of Outputs
1
Current - Output
±1.5A
Voltage - Load
10 V ~ 45 V
Voltage - Supply
4.75 V ~ 5.25 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
16-DIP (0.300", 7.62mm)
Operating Current
25mA
Operating Temperature Classification
Commercial
Package Type
PowerPDIP
Operating Supply Voltage (min)
10V
Operating Supply Voltage (max)
45V
Product
Stepper Motor Controllers / Drivers
Operating Supply Voltage
10 V to 45 V
Supply Current
25 mA
Mounting Style
Through Hole
Motor Type
Stepper
No. Of Outputs
2
Output Current
1.5A
Output Voltage
45V
Supply Voltage Range
4.75V To 5.25V
Driver Case Style
DIP
No. Of Pins
16
Operating Temperature Range
0°C To +70°C
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
E-TEA3718DP
Manufacturer:
ST
Quantity:
20 000
Company:
Part Number:
E-TEA3718DP
Quantity:
9 000
Features
Applications
The TEA3718 is a bipolar monolithic integrated
circuit intended to control and drive the current in
one winding of a bipolar stepper motor.
Description
The circuits consist of an LS-TTL compatible logic
input, a current sensor, a monostable and an
output stage with built-in protection diodes. Two
TEA3718 ICs and a few external components
form a complete control and drive unit for LS-TTL
or microprocessor-controlled stepper motor
systems.
Table 1. Device summary
January 2009
E-TEA3718SDP
E-TEA3718DP
E-TEA3718SFP
E-TEA3718SFPTR
E-TEA3718SP
Half-step and full-step mode
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 insteps or
varied continuously
Thermal overload protection
Alarm output or pre-alarm output
Order code
Power DIP
SO20
SO20 (tape and reel)
Multiwatt™ 15
Package
Rev 2
Figure 1.
TM: Multiwatt is a trademark of STMicroelectronics
COMPARATOR
REFERENCE
PULSE TIME
Power DIP 12+2+2
PHASE
INPUT
IN0
IN1
Block diagram
Stepper motor driver
Motor winding
OUT A
Multiwatt™ 15
TEA3718
OUT B
TEA3718
SO20
ALARM
(TEA3718SP)
PRE-ALARM
(TEA3718SFP)
SENSE
RESISTOR
www.st.com
1/26
26

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E-TEA3718DP Summary of contents

Page 1

... TEA3718 ICs and a few external components form a complete control and drive unit for LS-TTL or microprocessor-controlled stepper motor systems. Table 1. Device summary Order code E-TEA3718SDP Power DIP E-TEA3718DP E-TEA3718SFP SO20 E-TEA3718SFPTR SO20 (tape and reel) E-TEA3718SP Multiwatt™ 15 January 2009 Power DIP 12+2+2 Figure 1 ...

Page 2

... 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) ...

Page 3

... Contents 1 Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2 Device diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.2 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 ...

Page 4

... Contents 6 Application notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.1 Motor selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.2 Unused inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.3 Interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.4 Operating sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4/26 ...

Page 5

... Device diagrams Figure 3. Detailed block diagram (TEA3718SFP) Figure 4. Detailed block diagram (TEA3718SP) Device diagrams 5/26 ...

Page 6

... V Supply voltage input for logic circuitry SS This pin and pin IN0 are logic inputs which select the outputs of three comparators to set IN1 the current level. Current also depends on the sensing resistor and reference voltage. Table 8: Truth table See This TTL-compatible logic input sets the direction of current flow through the load ...

Page 7

... Recommended operating conditions Table 5. Recommended operating conditions Symbol Parameters V Supply voltage SS Vs Supply voltage I Output current m T Ambient temperature amb t Rise time for logic inputs r t Fall time for logic inputs f Parameters SO20 Power DIP 4. 0.020 - Electrical specifications Value Unit 7 ...

Page 8

... 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 Figure 6. Typical external component configuration 8/26 SO20 16 ( board copper area Power DIP Multiwatt 15 Unit o ...

Page 9

... Figure 7. Output waveforms Electrical specifications 9/26 ...

Page 10

... 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 ...

Page 11

... 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 11/26 ...

Page 12

... 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 ...

Page 13

... Functional blocks Figure 14. Alarm output (TEA3718SP) Figure 15. Pre-alarm output (TEA3718SFP) Functional blocks 13/26 ...

Page 14

... 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 pin ( an alarm condition is as follows: ● R > 80 ohms, the output stage is switched off C ● ...

Page 15

... 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 ...

Page 16

... Functional blocks Figure 19. Half-current on alarm condition circuit (V 4.4 Typical application Figure 20. Typical application circuit 16/ ref = ...

Page 17

... 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 lN0 and lN1. The current can also be switched off completely. ...

Page 18

... The circuit stands any order of turn-on or turn-off the supply voltages V dV/dt values are then assumed. Preferably, V should track V R 5.7 Analog control The current levels can be varied continuously varied with a circuit varying the voltage on the comparator terminal. Figure 21. Power losses against output current 18/26 . toff = 0.69 ⋅ R and C C ...

Page 19

... 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. Also, some stepper motors have such high core losses that they are not suited for switch mode current regulation. 6.2 ...

Page 20

... Application notes 6.4 Operating sequence Figure 22. Principal operating sequence 20/26 ...

Page 21

... 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® trademark. Package mechanical data www.st.com . 21/26 ...

Page 22

... Package mechanical data 22/26 ...

Page 23

... Package mechanical data 23/26 ...

Page 24

... Package mechanical data 24/26 ...

Page 25

... 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 ...

Page 26

... The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America ...

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