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Texas Instruments TPS259824ONRGER
- Part No.:
- TPS259824ONRGER
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
TPS259824ONRGER.pdf
- Description:
- IC CURRENT MONITOR 5% 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:7,979
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Product details
Overview
TPS259824ONRGER from Texas Instruments is a 2.7V–24V, 15A smart eFuse with 2.7mΩ RON, circuit breaker response mode, and fixed 16.9V overvoltage lockout (OVLO). It delivers ±1.5% accurate current monitoring and <400ns fast-trip short-circuit protection for hot-swap power rail protection in datacenter servers and PCIe add-on cards.
For engineers reviewing the TPS259824ONRGER datasheet, TPS259824ONRGER pinout, TPS259824ONRGER application, or TPS259824ONRGER equivalent, this page provides verified functional specifications, validated pin functions, confirmed thermal and timing behavior, and real-world implementation constraints for high-reliability industrial and server power management designs.
Technical Context
The TPS259824ONRGER implements a configurable circuit breaker fault response-latching off or auto-retry-with independent capacitor-based control of retry count (NRETRY), retry delay (RETRY_DLY), and transient blanking interval (ITIMER). Its internal OVLO threshold is fixed at 16.9V (rising), with hysteresis of ~0.5V, and it integrates robust thermal shutdown at 150°C with 10°C hysteresis.
Current limiting is set via external resistor RILIM on pin 8, supporting 2A–15A range with ±8% typical accuracy above 5A. The IMON pin provides a 246µA/A proportional current monitor output, calibrated to ±1.5% typical error at IOUT > 3A and 25°C, referenced to system ground.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 24V - supports wide-rail systems including 3.3V, 5V, 12V, and 24V industrial/server rails. |
| RON (typ) | 2.7mΩ - enables <30mV drop at 15A, minimizing conduction loss and thermal rise in high-current paths. |
| Current Limit Range | 2A to 15A - configured by RILIM (100Ω–1650Ω); 15A max continuous per absolute ratings and thermal design. |
| OVLO Threshold | 16.9V (rising) - fixed threshold variant; prevents damage from input surges beyond nominal 24V operation. |
| Fast-Trip Response | <400ns - detects and disables output within sub-microsecond during hard short-circuits, protecting downstream FETs and traces. |
| Current Monitor Accuracy | ±1.5% (typ, 25°C, IOUT > 3A) - enables precise load telemetry and system-level power budgeting without external shunt amplifiers. |
| Junction Temp Range | –15°C to 125°C - qualified for industrial and extended-temperature embedded applications with derated current above 85°C. |
Pinout & Package
TPS259824ONRGER is housed in a thermally enhanced 4mm × 4mm QFN package (RGE, 24-pin) with dual exposed thermal pads (Pad 1 connected to IN, Pad 2 to GND) for optimal heat dissipation and current distribution.
| 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 plane for thermal integrity and low-impedance return path. |
| OUT (Pins 17–24) | Power Output | Eight paralleled output terminals minimize voltage drop and thermal stress under 15A load conditions. |
| GND (Pins 4, 5, 14, Pad 2) | System Ground | Low-impedance reference for all analog and digital functions; Pad 2 must be connected to solid ground plane. |
| EN/UVLO (Pin 6) | Enable / UVLO Input | Active-high enable with programmable undervoltage lockout; resistor divider sets turn-on threshold (e.g., 2.5V). |
| ILIM (Pin 8) | Current Limit Set | Analog input tied to external RILIM; sets both current limit and fast-trip threshold (210% of ILIM). |
| IMON (Pin 9) | Current Monitor Output | Current-source output (246µA/A); requires external resistor to GND to generate voltage proportional to load current. |
| RETRY_DLY (Pin 10) | Auto-Retry Delay Control | Capacitor-to-GND sets time between fault recovery attempts; short to GND forces latch-off mode. |
| NRETRY (Pin 11) | Retry Count Control | Capacitor-to-GND sets finite retry count; open or grounded for indefinite retries. |
| PG (Pin 13) | Power Good Indicator | Open-drain output asserted when VOUT reaches regulation; requires external pull-up to valid logic supply. |
| dVdt (Pin 15) | Slew Rate Control | Capacitor-to-GND adjusts output ramp rate; open for fastest startup, 6800pF yields ~0.68V/ms at 24V. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable Overcurrent Blanking Timer (ITIMER) | Configurable via capacitor to suppress nuisance trips during inrush or line transients while preserving fast-fault response. |
| User-Configurable Fault Response | Latch-off or auto-retry with independently adjustable retry count and delay-enables remote recovery without manual reset. |
| Accurate Load Current Monitoring | ±1.5% typical gain error enables direct current sensing for telemetry, diagnostics, and predictive maintenance without calibration. |
| Robust Short-Circuit Protection | Tested across 1 million power-into-short events and immune to line transients-ensures field reliability in noisy environments. |
| UL 2367 & IEC 62368 Certified | Recognized under UL File E339631 and CB-certified-reduces safety certification effort for end equipment. |
Applications
| Server Standby Rail Protection | PCIe Riser Card Hot-Swap |
|---|---|
|
Use Scenario: Protecting 12V standby rails in rack-mounted servers against overloads and shorts during live insertion of service modules. IC Role / Device Role / Timing Role: Smart eFuse providing circuit breaker action, power-good signaling, and current telemetry to BMC. Use Value: Prevents bus collapse during hot-plug events while enabling automated fault logging and retry via NRETRY/RETRY_DLY configuration. |
Use Scenario: Safeguarding PCIe riser cards during hot-plug into backplanes with uncontrolled inrush and potential misalignment shorts. IC Role / Device Role / Timing Role: Primary overcurrent and OVLO protector with dVdt-controlled soft-start to limit inrush into large COUT. Use Value: Eliminates need for discrete TVS + fuse + controller stack; reduces BOM count and PCB area while improving trip consistency. |
| Optical Module Power Protection | Industrial PC Power Distribution |
|
Use Scenario: Securing 3.3V/5V power to SFP+/QSFP optical transceivers in routers/switches subject to ESD and cable-induced surges. IC Role / Device Role / Timing Role: Integrated OVLO (16.9V), UVLO, and fast-trip eFuse acting as first-line defense before DC-DC converters. Use Value: Survives repeated 15kV ESD events (HBM) and rejects line transients that would cause false trips in comparator-based solutions. |
Use Scenario: Distributing 24V power to multiple I/O modules in fanless industrial PCs operating continuously at 70°C ambient. IC Role / Device Role / Timing Role: Thermally robust eFuse with 125°C junction rating and integrated thermal shutdown. Use Value: Maintains stable current limiting up to full 15A at elevated temperatures, avoiding thermal runaway in enclosed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar eFuse protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS259824LNRGER | Same RON, OVLO, and package-but uses active current limiter (not circuit breaker) response mode. | Suitable where sustained overload tolerance is required instead of immediate shutdown (e.g., motor start-up). | Select TPS259824LNRGER only if constant-current foldback is preferred over latching behavior. |
| TPS25942ARVCR | Lower voltage range (2.7V–18V), 12A max, 3.5mΩ RON, no adjustable OVLO (fixed 6.1V), smaller 3mm × 3mm WQFN. | Better suited for space-constrained 12V systems where 16.9V OVLO is unnecessary and 15A headroom is not required. | Choose TPS25942ARVCR for cost-sensitive, compact 12V applications with less stringent OVLO requirements. |
Compared with TPS259824ONRGER, TPS259824LNRGER trades immediate fault isolation for current-limiting continuity, while TPS25942ARVCR sacrifices OVLO flexibility and current capacity for footprint reduction-making TPS259824ONRGER optimal for 24V server-grade hot-swap requiring deterministic circuit-breaker action.
Availability
TPS259824ONRGER is available at Aetrix Electronics and suitable for server standby rail protection, PCIe riser card hot-swap, and optical module power distribution requiring stable component supply, long-term lifecycle support, and certified safety compliance.
Supply support for TPS259824ONRGER 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 power protection solutions.
The TPS25982 family was designed specifically for intelligent hot-swap and inrush management in datacenter, networking, and industrial infrastructure-delivering integrated circuit breaker, current monitoring, and programmable fault handling in a single QFN package.
FAQ
What is the overvoltage lockout (OVLO) threshold for TPS259824ONRGER?
The TPS259824ONRGER has a fixed overvoltage lockout threshold of 16.9V (rising), with hysteresis of approximately 0.5V (falling threshold ~16.4V). This variant is selected for systems operating near 24V nominal where transient suppression above 16.9V is critical to prevent damage to downstream 18V-rated components. The OVLO function is internal and requires no external components.
How does TPS259824ONRGER differ from TPS259824LNRGER?
The TPS259824ONRGER uses a circuit breaker fault response (latch-off or auto-retry), whereas TPS259824LNRGER implements active current limiting. Both share identical RON, OVLO, package, and pinout-but their fault-handling logic differs fundamentally: TPS259824ONRGER disconnects the load upon overcurrent, while TPS259824LNRGER maintains regulated current flow. This makes TPS259824ONRGER preferable for safety-critical isolation.
Can TPS259824ONRGER support 15A continuous current in a standard 4-layer PCB?
Yes, TPS259824ONRGER supports 15A continuous current when mounted on a JEDEC 4-layer PCB (2s2p) with minimum recommended copper (2oz), thermal vias (3×2 array), and proper IN/OUT/GND plane connections. Thermal resistance is RθJB = 11.2°C/W; at 15A and 2.7mΩ, power dissipation is ~608mW, resulting in ~7°C rise above board temperature-well within the –15°C to 125°C junction range.
What is the accuracy of the current monitor (IMON) on TPS259824ONRGER?
The IMON pin on TPS259824ONRGER provides a current-source output with a nominal gain of 246µA/A. Its accuracy is ±1.5% typical at 25°C for load currents above 3A, and ±3% maximum across –40°C to 125°C and process/voltage corners. This enables high-fidelity telemetry without external amplification-critical for power budgeting and fault diagnostics in server BMC firmware.
How is the current limit threshold set on TPS259824ONRGER?
The current limit threshold on TPS259824ONRGER is set by an external resistor (RILIM) connected from pin 8 (ILIM) to GND. With RILIM = 100Ω, the device achieves ~14.7A typical limit; with 182Ω, it achieves ~8.1A. The relationship is monotonic and documented in Figure 6-12 of the datasheet. RILIM must not be left floating and must fall within 82Ω–1650Ω per recommended operating conditions.
TPS259824ONRGER 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)
TPS259824ONRGER FAQ
1.How can I place an order for TPS259824ONRGER through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS259824ONRGER 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 TPS259824ONRGER reliable?
The price and inventory of TPS259824ONRGER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS259824ONRGER is usually 5 days.
3.What payment methods are accepted for TPS259824ONRGER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS259824ONRGER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS259824ONRGER?
TPS259824ONRGER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS259824ONRGER 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 TPS259824ONRGER?
For technical support, including TPS259824ONRGER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS259824ONRGER requirements.
6.How does Aetrix verify that TPS259824ONRGER is sourced from the original manufacturer or authorized distributors?
All TPS259824ONRGER 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 TPS259824ONRGER meets industry standards.
7.What is the process for return or replacement of TPS259824ONRGER?
All TPS259824ONRGER units undergo pre-shipment inspection (PSI). If there is an issue with TPS259824ONRGER, 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 TPS259824ONRGER part is unused and in its original packaging.
Return procedure for TPS259824ONRGER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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