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Texas Instruments TPS259822LNRGET
- Part No.:
- TPS259822LNRGET
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
TPS259822LNRGET.pdf
- Description:
- IC CURRENT MONITOR 5% 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,501
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Product details
Overview
TPS259822LNRGET from Texas Instruments is a 2.7V–24V, 15A smart eFuse with 2.7mΩ RON, ±1.5% accurate current monitoring, adjustable transient fault management, and fixed 3.7V overvoltage lockout (OVLO). It integrates hot-swap protection for server standby rails and PCIe add-on cards, delivering fast-trip response (<400ns) and robust immunity to line transients.
For engineers reviewing the TPS259822LNRGET datasheet, TPS259822LNRGET pinout, TPS259822LNRGET application, or TPS259822LNRGET equivalent, key selection criteria include its 3.7V OVLO threshold, active current limiter mode, 2.7mΩ on-resistance at 25°C, ±8% current limit accuracy above 5A, and QFN-24 (4mm × 4mm) thermal-pad package with eight parallel output pins.
Technical Context
The TPS259822LNRGET implements an integrated power-switch architecture with dual-stage overcurrent protection: programmable current limiting (2A–15A via RILIM) and fast-trip short-circuit detection (210% of ILIM), managed by configurable blanking via ITIMER capacitor. Its EN/UVLO pin supports resistor-divider–based undervoltage lockout tuning, while dVdt pin enables slew-rate control for inrush current limiting.
It features user-selectable fault recovery (latch-off or auto-retry), with retry count and delay set independently via NRETRY and RETRY_DLY capacitors. Power Good (PG) provides open-drain status signaling, and IMON delivers a 246µA/A proportional current output for high-accuracy load current sensing across –40°C to 125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 24V - supports low-voltage embedded systems and 12V/24V industrial rails; absolute max 30V ensures robustness against voltage surges. |
| On-Resistance (RON) | 2.7mΩ typical at 25°C - minimizes I²R losses and voltage drop (e.g., <40mV at 15A), critical for high-current hot-swap applications. |
| Current Limit Range | 2A to 15A via external RILIM - enables precise system-level current budgeting; ±8% accuracy ensures predictable trip behavior above 5A. |
| Current Monitor Accuracy | ±1.5% typical at 25°C for IOUT > 3A - enables reliable real-time load telemetry without external shunt amplifiers. |
| Overvoltage Lockout | Fixed 3.7V (rising), 3.6V (falling) - protects downstream 3.3V logic circuits from supply overvoltage events in low-voltage domains. |
| Short-Circuit Response | <400ns typical - prevents destructive energy delivery during hard shorts; validated over 1 million power-into-short cycles. |
| Operating Junction Temp | –15°C to 125°C - qualified for industrial and datacenter environments where ambient temperatures exceed 85°C. |
Pinout & Package
TPS259822LNRGET uses a thermally enhanced 24-pin QFN package (RGE) with 4.0mm × 4.0mm footprint and dual thermal pads (Pad 1 connected to IN, Pad 2 to GND) for optimal heat dissipation and current handling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pins 1,2,3,16, Pad 1) | Power Input | High-current input node; exposed pad must be soldered to input power plane for thermal and electrical performance. |
| OUT (Pins 17–24) | Power Output | Eight parallel output terminals reduce trace resistance and distribute current; connects directly to protected load rail. |
| GND (Pins 4,5,14, Pad 2) | Ground Reference | System ground return path; thermal pad improves thermal resistance (RθJB = 11.2°C/W) and EMI performance. |
| EN/UVLO (Pin 6) | Enable / UVLO Input | Active-high enable with adjustable undervoltage lockout; resistor divider sets turn-on threshold (e.g., 2.5V nominal). |
| ILIM (Pin 8) | Current Limit Set | Connects to GND via precision resistor (e.g., 100Ω for 15A); sets both current limit and fast-trip thresholds. |
| IMON (Pin 9) | Current Monitor Output | Sources 246µA/A proportional current; convert to voltage with external resistor for ADC interfacing or analog monitoring. |
| PG (Pin 13) | Power Good Output | Open-drain signal asserted when FET is fully enhanced and VOUT ≥ VIN − 0.326V; requires external pull-up. |
| dVdt (Pin 15) | Slew Rate Control | Capacitor to GND adjusts output rise time (e.g., 0.68V/ms with 6800pF); prevents inrush-induced tripping during hot-plug. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable Over-Current Blanking Timer | Configurable via ITIMER capacitor to ignore benign load transients (e.g., capacitor charging) without false trips. |
| User-Configurable Fault Response | Latch-off or finite/indefinite auto-retry with independent timing control (RETRY_DLY/NRETRY capacitors) for remote system recovery. |
| Integrated Overtemperature Protection | Thermal shutdown at 150°C with 10°C hysteresis ensures safe operation under sustained overload or poor airflow conditions. |
| UL 2367 & IEC 62368 Certified | Recognized per UL File E339631 (RILIM ≥ 182Ω) and CB-certified - simplifies safety compliance for end equipment. |
| Accurate Load Current Monitoring | ±1.5% IMON gain error enables direct current measurement without calibration, reducing BOM cost and layout complexity. |
Applications
| Server Standby Rail Protection | PCIe Riser Card Hot-Swap |
|---|---|
|
Use Scenario: Protecting 3.3V standby power rails in datacenter servers from overloads and short circuits during maintenance or module insertion. IC Role / Device Role / Timing Role: Primary hot-swap controller enforcing current limiting and fast-trip protection; PG signal synchronizes system power sequencing. Use Value: Prevents bus collapse during hot-plug events; 3.7V OVLO matches 3.3V rail tolerance, avoiding nuisance shutdowns. |
Use Scenario: Safely inserting/removing PCIe riser cards into live backplanes without disrupting host system operation. IC Role / Device Role / Timing Role: Inrush current limiter and fault isolator; dVdt-controlled slew rate ensures controlled rail ramp-up (<2.7V/ms typical). Use Value: Eliminates connector arcing and supply droop; 2.7mΩ RON maintains <41mV drop at 15A, preserving voltage margin. |
| Routers Optical Module Protection | Industrial PC Power Management |
|
Use Scenario: Securing SFP+/QSFP+ optical transceiver power inputs in telecom routers against cable faults and ESD-induced shorts. IC Role / Device Role / Timing Role: Fault-tolerant power switch with latch-off response; IMON enables real-time transceiver current diagnostics. Use Value: 400ns short-circuit response prevents damage to expensive optics; ±1.5% current monitor supports predictive maintenance. |
Use Scenario: Managing 12V/24V auxiliary rails in ruggedized industrial PCs subject to vibration, thermal cycling, and voltage transients. IC Role / Device Role / Timing Role: Robust circuit protector with wide temp range (–15°C to 125°C) and transient-immune fault detection. Use Value: Immunity to line transients avoids false trips in electrically noisy factory environments; QFN-24 package supports automated assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart eFuse applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS259823LNRGET | Fixed 7.6V OVLO threshold instead of 3.7V; identical current limit, RON, and feature set. | Targeted at 5V or higher intermediate rails where 3.7V OVLO would cause premature shutdown. | Select when protecting 5V systems requiring tighter OVLO margin above nominal voltage. |
| TPS259822ONRGET | Same 3.7V OVLO but configured as circuit breaker (not current limiter); latches off permanently after overcurrent event. | Suitable for safety-critical loads where automatic retry is prohibited (e.g., medical subsystems). | Choose when fault persistence must halt power delivery until manual reset, not for self-recovering systems. |
Compared with TPS259822LNRGET, TPS259823LNRGET shifts OVLO to match higher-voltage rails, while TPS259822ONRGET replaces current limiting with single-event circuit breaking-both retain identical pinout, thermal design, and monitoring capability but serve distinct protection philosophies.
Availability
TPS259822LNRGET is available at Aetrix Electronics and suitable for server standby rail protection, PCIe riser card hot-swap, and optical module power management requiring stable component supply, long-term lifecycle support, and full traceability.
Supply support for TPS259822LNRGET 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 ICs, with decades of expertise in high-reliability protection solutions.
The TPS25982 family was designed specifically for high-current hot-swap and system-level power integrity in datacenter, networking, and industrial equipment-emphasizing precision current monitoring, transient resilience, and safety certification.
FAQ
What is the overvoltage lockout threshold for TPS259822LNRGET?
The TPS259822LNRGET has a fixed overvoltage lockout (OVLO) threshold of 3.7V (rising) and 3.6V (falling), optimized for 3.3V system rails. This value is factory-trimmed and cannot be adjusted externally. It triggers immediate output cutoff if input voltage exceeds this level, protecting downstream 3.3V logic components from overvoltage stress. The TPS259822LNRGET datasheet specifies ±0.08V tolerance across temperature and process variation.
How do I configure the current limit for TPS259822LNRGET?
Configure the current limit for TPS259822LNRGET by connecting a precision resistor between the ILIM pin (Pin 8) and GND. For example, a 100Ω resistor sets the limit to 15A (typical), while 182Ω yields ~8.1A. The relationship is inverse and nonlinear-see Figure 6-12 in the TPS259822LNRGET datasheet for exact RILIM vs. ILIM curves. Accuracy is ±8% for limits above 5A at 25°C.
Does TPS259822LNRGET support automatic fault recovery?
Yes, TPS259822LNRGET supports configurable auto-retry after overcurrent or thermal faults. Connect a capacitor from RETRY_DLY (Pin 10) to GND to set retry delay (e.g., 1nF ≈ 10ms), and another from NRETRY (Pin 11) to GND to define retry count (open = infinite retries). Alternatively, tie RETRY_DLY to GND for latch-off behavior. This flexibility is documented in Section 7.4 of the TPS259822LNRGET datasheet.
What package type and thermal characteristics does TPS259822LNRGET use?
TPS259822LNRGET uses a 24-pin QFN package (RGE) with 4.0mm × 4.0mm body and two thermal pads. Its junction-to-board thermal resistance (RθJB) is 11.2°C/W on a JEDEC 4-layer PCB, enabling 15A continuous operation with proper copper pour. The exposed IN pad (Pad 1) must be soldered to the input power plane to achieve rated current and thermal performance per the TPS259822LNRGET layout guidelines.
Can TPS259822LNRGET monitor load current accurately for telemetry?
Yes, TPS259822LNRGET provides highly accurate load current monitoring via its IMON pin (Pin 9), sourcing 246µA/A (±1.5% typical at 25°C for IOUT > 3A). Convert this current to voltage using a grounded resistor (e.g., 1kΩ → 0.246V/A), then interface with an ADC. Gain error remains within ±3% across –40°C to 125°C, making it suitable for closed-loop power management and health monitoring in the TPS259822LNRGET application.
TPS259822LNRGET Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Current Monitor
- Sensing Method:
- -
- Accuracy:
- ±5%
- Voltage - Input:
- 2.7V ~ 24V
- Current - Output:
- 15A
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-VQFN (4x4)
TPS259822LNRGET FAQ
1.How can I place an order for TPS259822LNRGET through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS259822LNRGET 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 TPS259822LNRGET reliable?
The price and inventory of TPS259822LNRGET are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS259822LNRGET is usually 5 days.
3.What payment methods are accepted for TPS259822LNRGET?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS259822LNRGET transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS259822LNRGET?
TPS259822LNRGET orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS259822LNRGET 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 TPS259822LNRGET?
For technical support, including TPS259822LNRGET datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS259822LNRGET requirements.
6.How does Aetrix verify that TPS259822LNRGET is sourced from the original manufacturer or authorized distributors?
All TPS259822LNRGET 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 TPS259822LNRGET meets industry standards.
7.What is the process for return or replacement of TPS259822LNRGET?
All TPS259822LNRGET units undergo pre-shipment inspection (PSI). If there is an issue with TPS259822LNRGET, 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 TPS259822LNRGET part is unused and in its original packaging.
Return procedure for TPS259822LNRGET:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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