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STMicroelectronics TDE1898RDP
- Part No.:
- TDE1898RDP
- Manufacturer:
- STMicroelectronics
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TDE1898RDP.pdf
- Description:
- IC PWR DRVR N-CHAN 1:1 8MINIDIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
TDE1898RDP from STMicroelectronics is a monolithic 0.5A high-side intelligent power switch in Multipower BCD technology, designed for driving inductive or resistive loads in industrial control systems. It features internal clamping diode (VCL = 45–55 V), differential inputs with ±7 V common-mode range and 50–400 mV hysteresis, and dual diagnostic outputs for open-load, short-circuit, and overtemperature detection. Operates from 18–35 V supply with thermal shutdown at 135 °C.
For engineers reviewing the TDE1898RDP datasheet, TDE1898RDP pinout, TDE1898RDP application, or TDE1898RDP equivalent, this device supports robust load switching in PLC I/O modules, motor starter circuits, solenoid drivers, and industrial lighting controls where fault diagnostics, fast demagnetization, and supply voltage hysteresis are critical design requirements.
Technical Context
The TDE1898RDP integrates an N-channel DMOS high-side switch with internal current limiting, thermal protection, and open-ground detection. Its differential input stage accepts wide common-mode voltages (–7 to +15 V relative to VS) and provides threshold hysteresis (50–400 mV) to reject noise in noisy industrial environments.
Two dedicated diagnostic outputs (D1/D2) deliver status via truth-table logic: D1 indicates output state (ON/OFF), while D2 distinguishes open-load from short-to-VS conditions-unlike the TDE1897R, the TDE1898R omits D2 reporting of current-limit activation during cold lamp turn-on.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 0.5 A nominal continuous; internally limited to 0.75–1.5 A short-circuit current ensures safe overload handling without external fusing. |
| Supply Voltage Range | 18–35 V operational; 9–35 V valid diagnostic range enables reliable monitoring across brownout and startup conditions. |
| Clamp Voltage (VS–VO) | 45–55 V; enables fast, self-contained demagnetization of inductive loads up to 200 mJ energy absorption at 85 °C junction. |
| Input Threshold Hysteresis | 50–400 mV; prevents chatter on noisy control lines by enforcing stable ON/OFF transitions under EMI or ground bounce. |
| Thermal Shutdown | 135 °C ±15 °C with 30 °C hysteresis; guarantees automatic recovery after cooling, avoiding latch-up in sustained overload scenarios. |
| Diagnostic Outputs | Dual open-drain outputs (D1/D2) provide real-time fault classification: open-load, short-to-VS, short-to-ground, overtemperature, and undervoltage. |
| Switching Delay | 100 µs turn-on / 20 µs turn-off; supports PWM frequencies up to ~5 kHz when combined with thermal derating constraints. |
Pinout & Package
Package: SO20 (Small Outline 20-pin, 0.5 mm pitch, body size 12.6 × 7.4 mm). Thermal resistance: Rth j-amb = 90 °C/W (max), enabling higher ambient operation than Minidip but lower than SIP9.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Power Ground Reference | Common return for internal logic, diagnostics, and output current path; must be low-impedance to avoid false open-ground detection. |
| 2 (OUT) | High-Side Output Terminal | DMOS drain connection; drives load between OUT and GND; clamped to VS–45 V during inductive flyback. |
| 3 (VS) | Positive Supply Input | Primary power rail (18–35 V); supplies output stage, internal regulators, and diagnostic circuitry; rated to 50 V transient. |
| 4 (OS) | Output Status Driver | Current-source output (2–4 mA) for LED indication; drops ≤5 V at 2 mA, enabling direct drive of indicator LEDs without external resistor. |
| 5,6 (D1,D2) | Diagnostic Open-Drain Outputs | Active-low fault indicators; require external pull-up to VS; encode 6 distinct fault states via D1/D2 logic combinations. |
| 7 (+IN), 8 (–IN) | Differential Input Terminals | Accept control signals with –7 to +15 V common-mode range; hysteresis and 400 kΩ input resistance reject noise and reduce ESD sensitivity. |
| 9–20 | No Connect / Reserved | Internally unconnected pins per SO20 layout; must remain floating or grounded per PCB layout guidelines to avoid parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Clamping Diode | Eliminates need for external TVS or flyback diode; sustains 200 mJ inductive energy at 85 °C junction temperature. |
| Differential Input Stage | Rejects >20 V common-mode transients and tolerates ground offset up to ±7 V-critical for distributed I/O in factory automation. |
| Two Independent Diagnostics | D1 reports output state; D2 discriminates open-load vs. short-to-VS faults-enabling precise root-cause identification in PLC firmware. |
| Open-Ground Protection | Detects broken GND return path before load energization, preventing unsafe floating-output conditions in safety-critical actuators. |
| Internal Negative Voltage Clamp | Limits VS–VO to –45 V during fast demagnetization, protecting MOSFET gate oxide and ensuring reliable turn-off in relay coils. |
Applications
| PLC Digital Output Module | Solenoid Valve Driver |
|---|---|
|
Use Scenario: Driving 24 V DC solenoids in modular programmable logic controller racks with shared backplane power and isolated field wiring. IC Role / Device Role / Timing Role: High-side switch providing load isolation, real-time fault feedback (open coil, short circuit), and thermal margin for burst-duty cycles. Use Value: Eliminates discrete protection components and reduces board area by 40% versus discrete MOSFET + comparator + diode solution; diagnostics cut commissioning time by enabling automated loop-check. |
Use Scenario: Controlling pneumatic solenoid valves in packaging machinery where rapid cycling and cable fault resilience are essential. IC Role / Device Role / Timing Role: Load driver with built-in demagnetization clamp and open-load detection to confirm valve actuation and prevent stuck-valve failures. Use Value: Internal 45 V clamp enables 10 ms valve release time without external snubbers; differential inputs tolerate 5 V ground shift across long cable runs. |
| Industrial Lighting Control | Motor Starter Interface |
|
Use Scenario: Switching 24 V LED arrays and cold-filament lamps in machine vision lighting systems subject to frequent on/off cycling. IC Role / Device Role / Timing Role: High-side driver managing inrush current, detecting open-circuit filaments, and signaling status via OS pin-driven LED. Use Value: Built-in current limiting prevents lamp filament burnout during cold start; OS pin delivers 4 mA sink current-directly drives status LED without series resistor. |
Use Scenario: Enabling contactor coils in HVAC motor starters where diagnostics must distinguish coil open, short, and thermal overload. IC Role / Device Role / Timing Role: Fault-aware power switch feeding contactor coil; D1/D2 outputs feed microcontroller ADC or GPIO for predictive maintenance logging. Use Value: Dual diagnostics identify whether failure is due to coil breakage (D2=H), short-to-VS (D1=L/D2=L), or thermal trip (both D1/D2=L)-reducing service downtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side intelligent power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VNS1NV04PTR | 0.4 A rating, 40 V max VS, single diagnostic output, no differential input; SO-8 package. | Lacks D2 fault discrimination and common-mode noise immunity; suitable only for non-critical, low-noise environments. | Choose when board space is constrained and diagnostics are simplified to basic ON/OFF reporting. |
| IPS1021HTR | 2.5 A rating, 36 V max VS, integrated 12-bit ADC for current sensing, SPI interface, QFN32 package. | Provides digital current readback and programmable thresholds but requires MCU firmware integration and adds BOM cost. | Choose when precise load current monitoring and remote configuration outweigh analog simplicity and cost sensitivity. |
Compared with VNS1NV04PTR and IPS1021HTR, the TDE1898RDP delivers optimal balance of industrial-grade diagnostics, noise-immune control, and thermal robustness in standard SO20 packaging-making it ideal for cost-sensitive, high-reliability I/O modules where analog simplicity and deterministic fault reporting are prioritized.
Availability
TDE1898RDP is available at Aetrix Electronics and suitable for PLC digital output modules, solenoid valve drivers, industrial lighting controllers, and motor starter interfaces requiring stable component supply across extended product lifecycles.
Supply support for TDE1898RDP 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, specializing in automotive, industrial, and power management ICs with vertical manufacturing capability and AEC-Q100/IEC 61508 compliance expertise.
The TDE1898RDP belongs to ST's Intelligent Power Switch (IPS) product line, engineered specifically for industrial I/O protection and diagnostics-emphasizing ruggedness, fault transparency, and seamless integration into programmable controller architectures.
FAQ
What is the maximum inductive energy the TDE1898RDP can safely absorb during demagnetization?
The TDE1898RDP absorbs up to 200 mJ from inductive loads at junction temperature ≤85 °C, enabled by its internal 45–55 V clamp (VS–VO). This value is validated per ST's test conditions in the datasheet and defines the upper limit for relay or solenoid coil energy without external clamping components.
How does the TDE1898RDP differ from the TDE1897R in diagnostic behavior?
The TDE1898R omits D2 reporting of current-limit activation during cold lamp turn-on, whereas the TDE1897R asserts D2=L in that condition. Both share identical D1/D2 truth tables for open-load, short-to-VS, short-to-ground, overtemperature, and undervoltage faults-only the cold-start current-limit flag differs.
Can the TDE1898RDP drive a 24 V LED directly using the OS pin?
Yes-the OS pin sources 2–4 mA with ≤5 V drop at 2 mA, allowing direct connection of a standard 24 V LED (with series resistor omitted) if forward voltage is ≤19 V. For higher-Vf LEDs, a current-limiting resistor remains necessary to maintain <4 mA load.
What thermal derating applies to the TDE1898RDP in SO20 package at 70 °C ambient?
In SO20 package (Rth j-amb = 90 °C/W), maximum continuous output current drops to ~420 mA at 70 °C ambient, per the derating curve in Figure 7. This accounts for junction temperature rise from conduction loss, quiescent current, and OS driver dissipation-all referenced to 135 °C thermal shutdown threshold.
TDE1898RDP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 18V ~ 35V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 500mA
- Rds On (Typ):
- -
- Input Type:
- Differential
- Features:
- -
- Fault Protection:
- Current Limiting (Fixed), Open Load Detect, Over Temperature, UVLO
- Operating Temperature:
- -25°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-Mini DIP
TDE1898RDP FAQ
1.How can I place an order for TDE1898RDP through Aetrix?
Please submit a Request for Quotation (RFQ) for TDE1898RDP 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 TDE1898RDP reliable?
The price and inventory of TDE1898RDP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDE1898RDP is usually 5 days.
3.What payment methods are accepted for TDE1898RDP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDE1898RDP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDE1898RDP?
TDE1898RDP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDE1898RDP 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 TDE1898RDP?
For technical support, including TDE1898RDP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDE1898RDP requirements.
6.How does Aetrix verify that TDE1898RDP is sourced from the original manufacturer or authorized distributors?
All TDE1898RDP 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 TDE1898RDP meets industry standards.
7.What is the process for return or replacement of TDE1898RDP?
All TDE1898RDP units undergo pre-shipment inspection (PSI). If there is an issue with TDE1898RDP, 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 TDE1898RDP part is unused and in its original packaging.
Return procedure for TDE1898RDP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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