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STMicroelectronics TDE3247FP
- Part No.:
- TDE3247FP
- Manufacturer:
- STMicroelectronics
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TDE3247FP.pdf
- Description:
- IC PWR DRIVER BIPOLAR 1:1 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,236
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Product details
Overview
TDE3247FP from STMicroelectronics is a monolithic high-current, high-voltage interface amplifier designed to drive lamps, relays, and stepping motors in industrial control systems. It delivers up to 300 mA output current, operates from 8 V to 30 V supply, features adjustable short-circuit protection to ground and VCC, includes internal thermal shutdown with hysteresis, and is housed in an SO-14 package.
For engineers reviewing the TDE3247FP datasheet, TDE3247FP pinout, TDE3247FP application, or TDE3247FP equivalent, key selection criteria include its ±25°C to +85°C operating ambient range, 1.2–1.8 V output saturation voltage at 150 mA, 2–50 mV input offset voltage, and configurable current limiting via external resistor.
Technical Context
The TDE3247FP integrates a robust output stage with dual short-circuit protection-against both ground and VCC-and thermal shutdown with hysteresis to prevent oscillation near trip thresholds. Its differential input structure supports common-mode input range from 2 V to (VCC – 2) V, enabling direct interfacing with logic-level controllers.
Current limiting is externally adjustable using a single resistor, allowing precise peak output current setting between ~50 mA and 250 mA depending on VCC and RSC. The device maintains stable operation without intermediate output levels during thermal or overcurrent events due to hysteresis in protection circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 8 V to 30 V - supports standard 12 V/24 V industrial rails and legacy ±15 V op-amp supplies |
| Max Output Current | 300 mA - sufficient for driving 24 V relay coils (e.g., 120 Ω, 200 mA) or small stepper motor phases |
| Output Saturation Voltage | 1.2–1.8 V at 150 mA - ensures low conduction loss while maintaining TTL/CMOS-compatible logic margins |
| Input Offset Voltage | 2–50 mV - enables accurate zero-crossing detection and stable DC-coupled switching control |
| Thermal Shutdown Threshold | Internally set with hysteresis - prevents cycling during sustained overload; junction limit ~150°C |
| Short-Circuit Protection | Active to both ground and VCC - eliminates need for external fusing in motor/lamp driver outputs |
| Ambient Temp Range | –25°C to +85°C - validated for use in uncontrolled industrial enclosures and factory-floor environments |
Pinout & Package
Package: SO-14 (Small Outline, 14-pin, ECOPACK® lead-free, body width 3.9 mm, pitch 1.27 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (–) | Differential input node; referenced to non-inverting input for comparator-like threshold control |
| 2 | Non-inverting Input (+) | Primary control input; accepts logic-level or analog reference signals for output activation |
| 3 | Output | High-current open-collector–like output capable of sinking up to 300 mA to ground |
| 4 | VCC | Positive supply rail; must be decoupled locally due to high transient current demands |
| 5 | GND | Power ground reference; shared return path for load current and internal bias networks |
| 6 | Current Limit Adj | Connects external resistor to set peak output current; value determines trip threshold per Figure 3 |
| 7 | Open Ground Detect | Monitors output continuity to ground; asserts fault if open-circuit condition detected |
| 8–14 | No Connect / Reserved | Unused pins; electrically isolated and not bonded internally per SO-14 layout |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable short-circuit protection | Single external resistor sets current limit from ~50 mA to 250 mA, enabling application-specific fault tolerance |
| Thermal shutdown with hysteresis | Prevents output oscillation during overheating by holding shutdown until junction cools by ≥10°C |
| Short-circuit protection to VCC | Protects against accidental connection of output to positive rail-no external diode required |
| Open ground detection | Internal sensing circuit flags broken load connections before system-level failure occurs |
| Wide supply range (8–30 V) | Eliminates need for separate LDOs in 12 V/24 V industrial systems; compatible with battery-backed or rectified AC supplies |
Applications
| Industrial Relay Driver | Lamp Load Switch |
|---|---|
Use Scenario: Driving 24 VDC electromagnetic relays in PLC I/O modules with frequent switching cycles. IC Role / Device Role / Timing Role: High-side switch interface amplifier providing galvanically isolated control signal amplification and fault protection. Use Value: Eliminates need for discrete transistor arrays and external current-sense resistors; reduces PCB area by >40% versus discrete solutions. | Use Scenario: Controlling incandescent or LED indicator lamps in HMI panels exposed to vibration and temperature swings. IC Role / Device Role / Timing Role: Robust current-regulated lamp driver with built-in open-load detection to flag burnt-out bulbs. Use Value: Enables predictive maintenance alerts via open-ground detect pin, reducing field service visits by detecting failures before total system downtime. |
| Stepper Motor Phase Driver | Valve Actuator Interface |
Use Scenario: Driving individual phases of unipolar stepper motors (e.g., 24 V, 150 mA/phase) in motion control subsystems. IC Role / Device Role / Timing Role: Precision current-limited phase switch with fast response (<1 µs rise/fall per Figure 8) for microstepping compatibility. Use Value: Maintains torque consistency across temperature via thermal derating and current regulation, avoiding step loss in ambient ranges up to 85°C. | Use Scenario: Controlling solenoid valves in HVAC or fluid control systems where reliability under intermittent load is critical. IC Role / Device Role / Timing Role: Fault-tolerant valve driver with dual short-circuit protection preventing damage from coil shorts or wiring faults. Use Value: Reduces risk of fire or thermal runaway in sealed enclosures by limiting fault energy and shutting down before case temperature exceeds 125°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current interface amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ULN2803ADWR | Octal Darlington array; 500 mA per channel; no adjustable current limit or open-ground detection | Best for multi-channel low-speed relay/lamp control without fault diagnostics | Choose when cost-per-channel and pin count matter more than per-channel protection granularity |
| TBD62783AFNG | Single-channel sink driver; 500 mA max; integrated flyback diode; no thermal hysteresis or VCC short protection | Suitable for stepper motor drivers requiring integrated clamp diodes but lacking diagnostic features | Prefer when driving inductive loads without external snubbers and thermal margin is less constrained |
Compared with ULN2803ADWR and TBD62783AFNG, the TDE3247FP uniquely combines adjustable current limiting, dual short-circuit protection, open-ground detection, and thermal hysteresis in a single-channel SO-14 package-making it optimal for safety-critical or diagnostic-enabled industrial interfaces.
Availability
TDE3247FP is available at Aetrix Electronics and suitable for industrial relay drivers, lamp load switches, stepper motor phase drivers, and valve actuator interfaces requiring stable component supply across extended lifecycle programs.
Supply support for TDE3247FP 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, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog/mixed-signal devices for industrial, automotive, and consumer markets.
The TDE3247FP belongs to ST's high-reliability interface amplifier product line, engineered specifically for ruggedized industrial actuation-emphasizing fault resilience, wide supply tolerance, and embedded diagnostics over raw speed or integration density.
FAQ
What is the minimum external current-limiting resistor value for TDE3247FP at 24 V supply?
Per Figure 7 in the datasheet, the minimum recommended resistor value is 1.2 kΩ at VCC = 24 V to ensure stable current limiting without exceeding internal power dissipation limits. Using lower values risks thermal shutdown activation during continuous operation and may reduce long-term reliability due to elevated junction temperature.
Does TDE3247FP require an external flyback diode when driving inductive loads?
No-TDE3247FP does not integrate a flyback diode. An external freewheeling diode must be connected across the inductive load (cathode to VCC, anode to output) to suppress voltage spikes during turn-off. This is explicitly required in Figure 10 and confirmed in the Application Circuit section (page 8).
Can TDE3247FP operate from a 5 V supply?
No-TDE3247FP has a minimum supply voltage of 8 V per Table 1 (Absolute Maximum Ratings). Operation below 8 V is not characterized or guaranteed; input bias current, output saturation voltage, and protection functionality may become unreliable or inactive outside the 8–30 V range.
How is open-ground detection implemented, and what output behavior occurs upon fault?
Pin 7 monitors output continuity to ground via internal current source and comparator. When an open circuit is detected, the output remains in high-impedance state and no automatic recovery occurs-system-level monitoring of Pin 7 is required to initiate corrective action or alarm reporting.
TDE3247FP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Type:
- Relay, Solenoid Driver
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- Bipolar
- Interface:
- On/Off
- Voltage - Load:
- 8V ~ 30V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 300mA
- Rds On (Typ):
- -
- Input Type:
- Inverting, Non-Inverting
- Features:
- -
- Fault Protection:
- Current Limiting (Adjustable), Over Temperature
- Operating Temperature:
- -25°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
TDE3247FP FAQ
1.How can I place an order for TDE3247FP through Aetrix?
Please submit a Request for Quotation (RFQ) for TDE3247FP 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 TDE3247FP reliable?
The price and inventory of TDE3247FP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDE3247FP is usually 5 days.
3.What payment methods are accepted for TDE3247FP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDE3247FP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDE3247FP?
TDE3247FP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDE3247FP 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 TDE3247FP?
For technical support, including TDE3247FP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDE3247FP requirements.
6.How does Aetrix verify that TDE3247FP is sourced from the original manufacturer or authorized distributors?
All TDE3247FP 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 TDE3247FP meets industry standards.
7.What is the process for return or replacement of TDE3247FP?
All TDE3247FP units undergo pre-shipment inspection (PSI). If there is an issue with TDE3247FP, 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 TDE3247FP part is unused and in its original packaging.
Return procedure for TDE3247FP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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