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STMicroelectronics TEA3717DP
- Part No.:
- TEA3717DP
- Manufacturer:
- STMicroelectronics
- Category:
- Motor Drivers, Controllers
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
TEA3717DP.pdf
- Description:
- IC MOTOR DRVR BIPOLAR 16POWERDIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,130
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Product details
Overview
TEA3717DP from STMicroelectronics is a bipolar stepper motor driver IC designed to regulate constant current in one winding of a bipolar stepper motor using switch-mode chopper control. It supports half-step and full-step modes, offers selectable current levels (5–1000 mA), operates from 10–45 V motor supply, and integrates protection diodes and TTL-compatible logic inputs.
For engineers reviewing the TEA3717DP datasheet, TEA3717DP pinout, TEA3717DP application, or TEA3717DP equivalent, this device is selected for precision open-loop motion control where current accuracy, thermal robustness, and LS-TTL/microprocessor interface compatibility are critical - especially in serial printer carriage drives and industrial positioning systems.
Technical Context
The TEA3717DP implements a monostable-based chopper controller with three discrete current levels (Low/Medium/Max) set via I0/I1 logic inputs and a reference voltage VR. Current sensing uses an internal 1 Ω resistor and comparator bank, triggering fixed off-time pulses (toff = 25–35 µs) to maintain regulation.
Its H-bridge output stage comprises four Darlington transistors with integrated protection diodes, enabling bidirectional current flow controlled by PHASE input with Schmitt-trigger noise immunity and built-in delay to prevent shoot-through during polarity reversal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Motor Supply Voltage | 10–45 V - supports unregulated DC supplies common in industrial actuators and legacy printer systems |
| Output Current Range | 20–800 mA - selectable in discrete steps or continuously varied via VR for fine-tuned torque control |
| Logic Supply (VCC) | 4.75–5.25 V - compatible with standard 5 V TTL/LS-TTL and microcontroller I/O without level shifting |
| Current Sensing | Internal 1 Ω resistor + comparator - eliminates external sense resistor, reducing BOM count and layout area |
| Off-Time (toff) | 25–35 µs - fixed monostable pulse width determines chopper frequency and thermal dissipation profile |
| Junction Temp Limit | +150 °C - enables operation in enclosed enclosures or high-ambient environments without forced cooling |
| Thermal Resistance (j-a) | 45 °C/W - requires ≥20 cm² copper pour on PCB for sustained 800 mA operation at +70 °C ambient |
Pinout & Package
TEA3717DP is housed in a 16-pin PowerDIP package (20.0 mm × 8.8 mm, 2.54 mm pitch), optimized for through-hole mounting and high-power dissipation with exposed thermal path via pins 14 and 3 (motor supply).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 15, 16 | H-Bridge Output (MA/MB) | Drive terminals for one bipolar stepper winding; must not be shorted - connects directly to motor coil |
| 3, 14 | Motor Supply (Vmm) | High-current input for unregulated motor supply; dual pins reduce trace resistance and improve thermal conduction |
| 4, 5, 12, 13 | GND | Common ground return for logic, current sense, and output stage - requires low-inductance star grounding |
| 6 | Logic Supply (VCC) | 5 V digital supply for internal logic and comparators; separate from motor supply to avoid noise coupling |
| 7 | PHASE | Direction control input with Schmitt trigger; high = current MA→winding→MB; includes internal delay to prevent cross-conduction |
| 8, 9 | I0, I1 | Current level select inputs (TTL-compatible); encode 4 states: off, low, medium, max - open-circuit defaults to high |
| 10 | VR | Reference voltage input; sets current threshold via RS; tracking with VCC recommended for stable startup |
| 11 | RS | Current sense resistor connection; internal 1 Ω used - external RS not required unless custom scaling needed |
Key Features
| Feature | Design Value |
|---|---|
| Built-in Protection Diodes | Four integrated flyback diodes eliminate need for external snubbers, reducing board space and assembly cost |
| Three-Step Current Selection | I0/I1 logic inputs provide deterministic, noise-immune current level selection without software overhead |
| Switch-Mode Chopper Control | Monostable-based off-time regulation maintains precise average current despite winding inductance and supply variation |
| TTL-Compatible Inputs | Direct interface with 5 V microcontrollers or LS-TTL logic without buffers or level translators |
| Unstabilized Motor Supply Support | Operates across 10–45 V Vmm range - suitable for battery-backed or rectified AC motor rails without regulation |
Applications
| Serial Printer Carriage Drive | Industrial Linear Actuator |
|---|---|
Use Scenario: Precise bidirectional movement of print head along rail using open-loop stepper control. IC Role / Device Role / Timing Role: Bipolar driver regulating constant winding current per step; PHASE and I0/I1 define direction and microstep-equivalent torque. Use Value: Eliminates external current sense and H-bridge components, enabling compact carriage PCB with <1.5 W thermal load at 500 mA. | Use Scenario: Positioning of valve spools or gripper jaws in factory automation equipment. IC Role / Device Role / Timing Role: Single-winding chopper driver delivering repeatable holding torque and smooth acceleration profiles. Use Value: Internal 1 Ω sense and fixed toff ensure ±5% current accuracy over 0–70 °C, reducing calibration effort. |
| Document Scanner Transport | Lab Equipment Stage Controller |
Use Scenario: Synchronized paper feed and scan head motion in A4 document scanners. IC Role / Device Role / Timing Role: Dual-IC configuration (two TEA3717DPs) drives two-phase bipolar stepper with independent current control per phase. Use Value: Matching thermal characteristics and chopper timing between channels minimize positional jitter during scanning. | Use Scenario: Micrometer-precision XY stage movement in optical alignment systems. IC Role / Device Role / Timing Role: Low-noise current regulation enables sub-micron repeatability without closed-loop feedback. Use Value: Integrated protection diodes and 150 °C junction rating support continuous duty in sealed instrument enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bipolar stepper motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| L297 + L298N | Separate controller + dual H-bridge; requires external sense resistors and timing components | Higher component count but supports higher voltage (46 V) and current (2 A) | Choose when >800 mA peak current or dual-winding simultaneous drive is required |
| TB6560AHQ | Integrated microstepping controller with 1/8-step resolution; no discrete current level selection | Delivers smoother motion and lower vibration but lacks direct TTL-level I0/I1 interface | Prefer when microstepping and quiet operation outweigh simplicity and direct logic control |
Compared with L297+L298N and TB6560AHQ, the TEA3717DP provides minimal-component, TTL-native bipolar drive with fixed chopper timing - ideal for cost-sensitive, non-microstepping applications requiring proven reliability and straightforward integration.
Availability
TEA3717DP is available at Aetrix Electronics and suitable for serial printer carriage drives, industrial linear actuators, document scanner transports, and lab equipment stage controllers requiring stable component supply and long-lifecycle support.
Supply support for TEA3717DP includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, power, and microcontroller solutions for industrial, automotive, and consumer markets.
The TEA3717DP belongs to ST's legacy motor driver IC portfolio, engineered specifically for robust, low-complexity bipolar stepper control in cost-sensitive electromechanical systems with unregulated power rails.
FAQ
What is the maximum continuous output current supported by the TEA3717DP?
The TEA3717DP supports up to 800 mA continuous output current under recommended operating conditions (Tamb ≤ +70 °C, Vmm ≤ 40 V, with ≥20 cm² copper area). At 500 mA, total power dissipation is 1.8 W; exceeding 800 mA risks thermal shutdown or junction temperature violation beyond 150 °C.
Can the TEA3717DP drive a unipolar stepper motor?
No - the TEA3717DP is designed exclusively for bipolar stepper motors with center-tapped windings. Its H-bridge output stage and PHASE-controlled current reversal require two-terminal winding connections. Unipolar motors demand different switching topologies and are incompatible with this IC's architecture.
How does the internal current sensing work without an external resistor?
The TEA3717DP integrates a precision 1 Ω current-sense resistor (RS) internally. Motor current flows through this element, generating a proportional voltage drop compared against VR at the comparator inputs. This eliminates external RS placement errors and layout sensitivity while maintaining ±5% current accuracy across temperature.
Is the TEA3717DP still in active production?
The TEA3717DP is marked "Obsolete" in ST's official documentation (2003 datasheet revision), but Aetrix Electronics maintains legacy inventory and offers traceable, tested units for repair, replacement, and long-life industrial programs. No functional successor has been designated by ST.
TEA3717DP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Motor Type - Stepper:
- Bipolar
- Motor Type - AC, DC:
- -
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (2)
- Interface:
- Parallel
- Technology:
- Bipolar
- Step Resolution:
- 1, 1/2
- Applications:
- General Purpose
- Current - Output:
- 800mA
- Voltage - Supply:
- 4.75V ~ 5.25V
- Voltage - Load:
- 10V ~ 40V
- Operating Temperature:
- 0°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PowerDIP
TEA3717DP FAQ
1.How can I place an order for TEA3717DP through Aetrix?
Please submit a Request for Quotation (RFQ) for TEA3717DP on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TEA3717DP reliable?
The price and inventory of TEA3717DP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TEA3717DP is usually 5 days.
3.What payment methods are accepted for TEA3717DP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TEA3717DP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TEA3717DP?
TEA3717DP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TEA3717DP order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TEA3717DP?
For technical support, including TEA3717DP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TEA3717DP requirements.
6.How does Aetrix verify that TEA3717DP is sourced from the original manufacturer or authorized distributors?
All TEA3717DP products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TEA3717DP meets industry standards.
7.What is the process for return or replacement of TEA3717DP?
All TEA3717DP units undergo pre-shipment inspection (PSI). If there is an issue with TEA3717DP, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TEA3717DP part is unused and in its original packaging.
Return procedure for TEA3717DP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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