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Texas Instruments TPS26621DRCT
- Part No.:
- TPS26621DRCT
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS26621DRCT.pdf
- Description:
- IC ELECTRONIC FUSE 5% 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,169
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Product details
Overview
TPS26621DRCT from Texas Instruments is a 60-V, 800-mA industrial eFuse with integrated input reverse polarity protection, auto-retry fault response, and adjustable current limiting (25–880 mA ±5% at 880 mA). It features 478-mΩ total RON, 340-µA operating quiescent current, and operates across –40°C to +125°C in PLC I/O modules and AC/servo drives.
For engineers reviewing the TPS26621DRCT datasheet, TPS26621DRCT pinout, TPS26621DRCT application, or TPS26621DRCT equivalent, this page delivers verified electrical parameters, validated pin functions, confirmed thermal performance (RθJA = 44.8°C/W), exact package mapping (10-pin VSON, 3 mm × 3 mm), and two rigorously cross-checked alternative parts for industrial power rail protection.
Technical Context
The TPS26621DRCT implements dual back-to-back MOSFETs with integrated gate control to enable fast reverse-current blocking (0.3 µs) and bidirectional overvoltage/undervoltage monitoring via resistor-programmable UVLO and OVP pins. Its auto-retry behavior resets after thermal or overcurrent faults without external intervention.
It supports programmable inrush control via dV/dT capacitor (6.8 nF typical), adjustable current limit via ILIM resistor (7.5–267 kΩ), and provides open-drain FLT signaling for system health monitoring - all within a single 3 mm × 3 mm VSON package rated for 62-V absolute maximum input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 60 V - supports common industrial DC bus voltages including 24 V and 48 V systems. |
| Current Limit Accuracy | ±5% at 880 mA - enables precise power supply sizing and avoids overdesign of upstream converters. |
| Total RON | 478 mΩ max at 25°C - limits conduction loss to ≤430 mW at 800 mA, reducing thermal load on PCB. |
| Quiescent Current | 340 µA in operation / 12 µA in shutdown - minimizes standby power draw in always-on industrial nodes. |
| Fault Response | Auto-retry mode - automatically recovers after overtemperature or overcurrent events without host intervention. |
| Reverse Polarity Protection | Input-side only to –60 V - blocks reverse input voltage but does not support output-side reverse protection (unlike TPS26624/25). |
| Package | 10-pin VSON (DRC), 3.00 mm × 3.00 mm - surface-mount footprint compatible with automated assembly and high-density layouts. |
Pinout & Package
TPS26621DRCT uses a thermally enhanced 10-pin VSON (DRC) package with exposed PowerPAD™ connected to RTN for heat dissipation. Pin numbering follows standard top-view orientation (Pin 1 = IN, Pin 10 = OUT, PowerPAD™ centered beneath die).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power input | Primary high-voltage supply connection (4.5–60 V); withstands –60 V reverse input. |
| 2 UVLO | Undervoltage lockout setting | Resistor-programmable threshold (1.2 V typ); opens FET if input drops below set point. |
| 3 OVP | Overvoltage protection setting | Resistor-programmable cut-off threshold (1.2 V typ); disables output above configured voltage. |
| 4 SHDN | Shutdown control | Active-low logic input; pulls device into 12-µA shutdown state and resets latched faults. |
| 5 RTN | Reference ground | Internal reference node for UVLO, OVP, ILIM, dVdT - must be tied to system return plane. |
| 6 GND | System ground | Power ground connection for internal circuitry; separate from RTN to isolate reference paths. |
| 7 ILIM | Current limit programming | Resistor-to-RTN sets overload threshold (25–880 mA); open/short states defined for safety compliance. |
| 8 dVdT | Output slew rate control | Capacitor-to-RTN controls ramp time (e.g., 22 nF → 11 ms to 24 V); prevents inrush stress on downstream caps. |
| 9 FLT | Fault indicator | Open-drain output asserted low during overcurrent, overvoltage, undervoltage, or thermal fault. |
| 10 OUT | Protected output | Switched output delivering regulated power to load; includes reverse-current blocking when IN < OUT. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated input reverse polarity protection | Blocks –60 V applied to IN while maintaining full functionality - eliminates need for external series diode or MOSFET. |
| Auto-retry fault recovery | Self-resets after overtemperature or overcurrent events - enables unattended recovery in remote industrial nodes. |
| Adjustable current limit with ±5% accuracy | Configurable 25–880 mA range using single resistor; tight tolerance reduces margining requirements in power budgeting. |
| Fast reverse-current blocking (0.3 µs) | Prevents backfeed from hold-up capacitors during brownout or power-fail conditions - protects upstream sources. |
| IEC 61000-4-5 surge-ready design | Withstands line surges with minimal external components - simplifies compliance testing for industrial equipment. |
| UL 2367 recognition & IEC 62368-1 certification | Validated for end-equipment safety standards - accelerates regulatory approval for PLCs, drives, and sensors. |
Applications
| PLC I/O Modules | AC & Servo Drives |
|---|---|
|
Use Scenario: Protecting digital/analog input/output channels from field wiring faults, reverse connections, and surge transients in modular automation controllers. IC Role / Device Role / Timing Role: High-side eFuse providing input rail protection, reverse polarity blocking, and fast short-circuit isolation for each I/O channel. Use Value: Eliminates need for discrete TVS diodes and series MOSFETs per channel, reducing BOM count and board area by >30%. |
Use Scenario: Securing DC link power distribution to gate drivers, position feedback circuits, and communication interfaces in motor control systems. IC Role / Device Role / Timing Role: Primary overcurrent and overvoltage protector for auxiliary 24-V rails feeding isolated power supplies and encoder interfaces. Use Value: Enables hot-swap capability during maintenance and prevents cascading failures from gate driver shoot-through events. |
| Sensor & Control Systems | PoE High-Side Protection |
|
Use Scenario: Safeguarding 2-wire or 4–20 mA loop-powered sensors against miswiring, lightning-induced surges, and ESD events in harsh environments. IC Role / Device Role / Timing Role: Input-stage protection IC with programmable current limit and reverse polarity immunity for analog sensor front-ends. Use Value: Maintains sensor uptime under intermittent fault conditions due to auto-retry behavior - no manual reset required. |
Use Scenario: Adding robust overcurrent and reverse-polarity protection to PoE-powered devices (e.g., IP cameras, access points) before PD interface ICs. IC Role / Device Role / Timing Role: High-voltage eFuse placed between PoE midspan injector output and PD controller input. Use Value: Prevents damage from incorrect cable polarity or accidental connection to non-PoE 48-V sources - critical for field-deployed equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar industrial eFuse applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS26620DRCT | Latch-off fault response (not auto-retry); identical pinout, RON, voltage range, and protection features. | Suitable where permanent shutdown is preferred after fault - requires external reset signal or power cycle. | Select TPS26620DRCT when system architecture mandates hard fault lockout and manual intervention for recovery. |
| TPS26623DRCT | Fixed 38-V overvoltage clamp (not adjustable cut-off); same auto-retry mode and input reverse protection. | Used where overvoltage must be clamped rather than disconnected - e.g., to protect downstream LDOs with limited input rating. | Choose TPS26623DRCT when downstream circuitry cannot tolerate output interruption during overvoltage events. |
Compared with TPS26621DRCT, TPS26620DRCT offers deterministic latch behavior ideal for safety-critical shutdowns, while TPS26623DRCT trades adjustable OVP cut-off for fixed clamping - both share identical thermal performance, package, and current-limit accuracy but differ in fault-handling strategy and OVP implementation.
Availability
TPS26621DRCT is available at Aetrix Electronics and suitable for PLC I/O modules, AC/servo drives, and sensor/control systems requiring stable component supply, long-term industrial lifecycle support, and traceable sourcing.
Supply support for TPS26621DRCT 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies with decades of industrial-grade reliability validation.
The TPS2662x family was designed specifically for high-voltage industrial power rail protection - integrating reverse polarity, surge resilience, and programmable fault responses into compact VSON packages for factory automation and motion control systems.
FAQ
What is the maximum reverse input voltage the TPS26621DRCT supports?
The TPS26621DRCT supports input reverse polarity protection up to –60 V, meaning it safely blocks and withstands –60 V applied to the IN pin without damage or unintended conduction. This is confirmed in the Absolute Maximum Ratings table and Feature list of the official datasheet. The TPS26621DRCT does not provide output-side reverse polarity protection - that feature is exclusive to TPS26624/TPS26625 variants.
Does the TPS26621DRCT include overvoltage clamp or cut-off functionality?
The TPS26621DRCT implements overvoltage cut-off, not clamping. When the OVP pin threshold is exceeded, the internal FET opens to disconnect the load - verified in the Device Comparison Table and Electrical Characteristics section. Fixed 38-V overvoltage clamping is only available in TPS26622/TPS26623; the TPS26621DRCT requires external resistor programming of its adjustable OVP threshold.
How does the TPS26621DRCT respond to an overcurrent fault?
The TPS26621DRCT enters auto-retry mode during overcurrent faults: it limits current, asserts FLT low, waits a fixed 512-ms timeout (tCL(dly)), then attempts automatic recovery. This behavior is explicitly documented in the Device Comparison Table and Detailed Description section. Unlike latch-off variants (e.g., TPS26620), the TPS26621DRCT does not require external reset - enabling autonomous recovery in distributed control nodes.
What is the thermal resistance (RθJA) of the TPS26621DRCT package?
The TPS26621DRCT in its 10-pin VSON (DRC) package has a junction-to-ambient thermal resistance (RθJA) of 44.8°C/W under standard JEDEC test conditions (2-layer board, 2 oz copper). This value is specified in Section 7.4 Thermal Information and directly impacts maximum continuous current derating - for example, at 800 mA and 478 mΩ RON, power dissipation is ~305 mW, resulting in ~13.7°C rise above ambient.
Can the TPS26621DRCT be used in systems requiring output reverse polarity protection?
No - the TPS26621DRCT provides input-side reverse polarity protection only, supporting up to –60 V on the IN pin. Output reverse polarity protection (i.e., blocking negative voltage on the OUT pin) is not implemented in the TPS26621DRCT. That capability is explicitly reserved for TPS26624 and TPS26625 variants, as stated in the Features section and Device Comparison Table. Using TPS26621DRCT in output-reverse scenarios risks load damage.
TPS26621DRCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Electronic Fuse
- Sensing Method:
- -
- Accuracy:
- ±5%
- Voltage - Input:
- 4.5V ~ 60V
- Current - Output:
- 880mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS26621DRCT FAQ
1.How can I place an order for TPS26621DRCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS26621DRCT 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 TPS26621DRCT reliable?
The price and inventory of TPS26621DRCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS26621DRCT is usually 5 days.
3.What payment methods are accepted for TPS26621DRCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS26621DRCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS26621DRCT?
TPS26621DRCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS26621DRCT 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 TPS26621DRCT?
For technical support, including TPS26621DRCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS26621DRCT requirements.
6.How does Aetrix verify that TPS26621DRCT is sourced from the original manufacturer or authorized distributors?
All TPS26621DRCT 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 TPS26621DRCT meets industry standards.
7.What is the process for return or replacement of TPS26621DRCT?
All TPS26621DRCT units undergo pre-shipment inspection (PSI). If there is an issue with TPS26621DRCT, 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 TPS26621DRCT part is unused and in its original packaging.
Return procedure for TPS26621DRCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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