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Texas Instruments TPS259827LNRGER
- Part No.:
- TPS259827LNRGER
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
TPS259827LNRGER.pdf
- Description:
- IC CURRENT MONITOR 5% 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,925
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Product details
Overview
TPS259827LNRGER from Texas Instruments is a smart eFuse IC providing integrated hot-swap protection, adjustable current limiting (2A–15A), ±1.5% accurate load current monitoring, and no-overvoltage-lockout (no-OVLO) configuration for 2.7V–24V input systems. It features 2.7mΩ typical RON, <400ns fast-trip response, and configurable fault recovery (latch-off or auto-retry) - deployed in PCIe risers and server standby rails.
For engineers reviewing the TPS259827LNRGER datasheet, TPS259827LNRGER pinout, TPS259827LNRGER application, or TPS259827LNRGER equivalent, key selection criteria include its no-OVLO option, active current limiter mode, thermal robustness (–15°C to 125°C), QFN-24 package footprint, and programmable dV/dt slew rate control for inrush management.
Technical Context
The TPS259827LNRGER implements an integrated N-channel MOSFET power switch with precision analog current sensing and dual-threshold overcurrent detection (adjustable ILIM + fixed fast-trip at 210% ILIM). Its internal blanking timer (ITIMER pin) distinguishes transient surges from hard faults, enabling uninterrupted operation during line/load transients.
Configuration is fully external: RILIM sets current limit (±8% accuracy >5A), CdVdt controls output slew rate, and capacitors on RETRY_DLY/NRETRY define retry delay and count. UL 2367 (E339631) and IEC 62368 certification confirm safety compliance for industrial and datacenter use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 24V - supports low-voltage embedded rails and 12V/24V industrial buses without level-shifting. |
| RON (typ) | 2.7mΩ - minimizes I²R loss and self-heating at 15A continuous, enabling compact thermal design. |
| Current Limit Range | 2A to 15A via RILIM - covers fan modules (2–5A), add-on cards (5–10A), and high-power PCIe loads (10–15A). |
| Current Monitor Accuracy | ±1.5% (typ, >3A) - enables precise system-level power budgeting and telemetry without external shunt amplifiers. |
| Fast-Trip Response | <400ns - prevents MOSFET destruction during catastrophic short-circuit events on downstream circuitry. |
| Operating Junction Temp | –15°C to 125°C - validated for harsh environments including industrial PCs and telecom equipment enclosures. |
| Package | 4mm × 4mm QFN-24 with dual thermal pads - provides low thermal resistance (RθJB = 11.2°C/W) for high-current conduction. |
Pinout & Package
TPS259827LNRGER uses a 4mm × 4mm, 24-pin QFN package (RGE) with two exposed 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; thermal pad must be soldered to input plane for current sharing and thermal relief. |
| OUT (Pins 17–24) | Power Output | Eight paralleled output terminals reduce trace resistance and improve current distribution to load. |
| GND (Pins 4,5,14, Pad 2) | System Ground | Low-impedance return path; thermal pad ties to ground plane for EMI suppression and thermal stability. |
| EN/UVLO (Pin 6) | Enable / UVLO Input | Resistor divider sets undervoltage lockout threshold; active-high logic enables device startup only above safe rail voltage. |
| ILIM (Pin 8) | Current Limit Set | Resistor-to-GND configures both current limit and fast-trip thresholds; open = disable output. |
| IMON (Pin 9) | Current Monitor Output | Sources 246µA/A proportional current - convert to voltage with external resistor for ADC interfacing. |
| RETRY_DLY (Pin 10) | Auto-Retry Delay | Capacitor-to-GND sets time between fault shutdown and next restart attempt; grounded = latch-off mode. |
| NRETRY (Pin 11) | Retry Count Control | Capacitor-to-GND defines finite retry count; grounded = infinite retries until fault clears. |
| PG (Pin 13) | Power Good Indicator | Open-drain output asserted when VOUT reaches regulation - requires external pull-up for host processor monitoring. |
| dVdt (Pin 15) | Slew Rate Control | Capacitor-to-GND slows output rise time to limit inrush current into large bulk capacitance loads. |
Key Features
| Feature | Design Value |
|---|---|
| No OVLO configuration | TPS259827LNRGER omits overvoltage lockout circuitry - ideal for systems where upstream regulators guarantee clean input (e.g., tightly regulated server VRMs). |
| Adjustable transient blanking | ITIMER pin accepts capacitor to delay overcurrent response, preventing nuisance trips during motor startup or capacitor charging surges. |
| Robust short-circuit immunity | Validated across 1 million power-into-short cycles with no degradation - ensures field reliability in high-availability infrastructure. |
| Configurable fault recovery | Latch-off or auto-retry modes support fail-safe shutdown (industrial control) or autonomous recovery (remote telecom nodes). |
| UL 2367 & IEC 62368 certified | Meets end-equipment safety standards without requiring additional external components or layout derating. |
Applications
| Server Standby Rail Protection | PCIe Riser Card Protection |
|---|---|
|
Use Scenario: Protects 3.3V/5V standby power domains in datacenter servers against hot-plug insertion faults and cable shorts. IC Role / Device Role / Timing Role: Acts as intelligent power switch with sub-400ns fault isolation and PG signaling for BMC coordination. Use Value: Prevents single-point failure from disabling entire backplane; maintains system uptime during field maintenance. |
Use Scenario: Safeguards PCIe riser cards during live insertion into powered chassis, managing inrush into multiple M.2 SSDs and GPU interfaces. IC Role / Device Role / Timing Role: Provides dV/dt-controlled soft-start and current-limited hot-swap, synchronized with slot power enable sequencing. Use Value: Eliminates connector arcing and bus reset events, enabling true plug-and-play expansion in enterprise storage systems. |
| Fan Module Power Management | Industrial PC I/O Protection |
|
Use Scenario: Delivers controlled power to multi-fan assemblies in network switches, absorbing PWM-induced current transients. IC Role / Device Role / Timing Role: Functions as programmable current limiter with adjustable blanking window to tolerate fan stall surges. Use Value: Avoids false shutdowns during thermal throttling cycles while maintaining protection against locked-rotor faults. |
Use Scenario: Secures isolated I/O rails (RS-485, CAN, digital I/O) in ruggedized industrial PCs exposed to ESD and cable coupling noise. IC Role / Device Role / Timing Role: Serves as fault-isolating barrier with integrated overtemperature shutdown and PG status reporting. Use Value: Enables deterministic fault containment without software intervention - critical for SIL-2 functional safety architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart eFuse applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS259827ONRGE | Same pinout and electrical specs, but configured as circuit breaker (trip-and-hold) instead of active current limiter. | Used where immediate shutdown is required upon overcurrent (e.g., safety-critical actuators), not sustained current regulation. | Select TPS259827ONRGE if system architecture mandates hard cutoff rather than foldback current limiting. |
| TPS25942ARVCR | Lower voltage range (2.7V–18V), higher RON (3.5mΩ), no dV/dt control, and fixed 3.7V OVLO - lacks no-OVLO option and programmable retry. | Targeted at cost-sensitive consumer electronics with simpler protection needs and no remote recovery requirement. | Choose TPS25942ARVCR only for non-critical 12V applications where thermal performance and configurability are secondary. |
Compared with TPS259827ONRGE and TPS25942ARVCR, the TPS259827LNRGER uniquely combines no-OVLO flexibility, active current limiting, and full fault-recovery programmability - making it optimal for high-availability 24V server and telecom infrastructure where graceful degradation is mandatory.
Availability
TPS259827LNRGER is available at Aetrix Electronics and suitable for server standby rail protection, PCIe riser card safeguarding, and industrial PC I/O power management requiring stable component supply, long-term lifecycle assurance, and certified safety compliance.
Supply support for TPS259827LNRGER 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 and embedded processing technologies, with decades of expertise in power management ICs and system-level protection solutions.
The TPS25982 family was designed specifically for high-reliability hot-swap and power-distribution applications in datacenters, networking gear, and industrial automation - emphasizing configurability, safety certification, and thermal resilience.
FAQ
What is the overvoltage lockout (OVLO) behavior of the TPS259827LNRGER?
The TPS259827LNRGER has no overvoltage lockout circuitry - it is explicitly configured for systems where input voltage is tightly regulated and guaranteed not to exceed absolute maximum ratings. This eliminates unnecessary shutdowns in well-designed VRM-fed rails and simplifies system-level voltage supervision. Unlike TPS259822LNRGE (3.7V OVLO) or TPS259824LNRGE (16.9V OVLO), the TPS259827LNRGER relies entirely on upstream protection for overvoltage events.
How does the TPS259827LNRGER handle inrush current during power-up?
The TPS259827LNRGER manages inrush via its dV/dt control pin (Pin 15): connecting a capacitor from dVdt to GND linearly slows the output voltage ramp rate, limiting peak inrush into bulk capacitance. Typical slew rates range from 0.68 V/ms (6800pF) to 7.4 V/ms (no capacitor) at 24V input - enabling precise tuning for diverse load capacitances without external MOSFET gate drivers.
Can the TPS259827LNRGER be used in a latch-off fault mode?
Yes - the TPS259827LNRGER supports latch-off operation by grounding the RETRY_DLY pin (Pin 10). In this configuration, the device shuts down permanently after any overcurrent, overtemperature, or short-circuit event and requires an external EN/UVLO signal toggle to re-enable. This behavior is ideal for safety-critical subsystems where automatic recovery is prohibited.
What is the accuracy of current monitoring on the TPS259827LNRGER?
The TPS259827LNRGER provides ±1.5% typical accuracy for its IMON output (Pin 9) at IOUT > 3A and 25°C, with gain of 246 µA/A. This high-precision analog current mirror enables direct connection to microcontroller ADCs for real-time load telemetry, power budgeting, and predictive maintenance - eliminating need for discrete current-sense amplifiers in most implementations.
Does the TPS259827LNRGER require external components for basic operation?
Yes - minimal external components are required: RILIM (to set current limit), optional CdVdt (for slew control), and pull-up on PG (for power-good signaling). The EN/UVLO pin may use a resistor divider for custom undervoltage threshold. No external FET, sense resistor, or protection diodes are needed - all core protection functions are integrated within the TPS259827LNRGER die and QFN package.
TPS259827LNRGER 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)
TPS259827LNRGER FAQ
1.How can I place an order for TPS259827LNRGER through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS259827LNRGER 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 TPS259827LNRGER reliable?
The price and inventory of TPS259827LNRGER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS259827LNRGER is usually 5 days.
3.What payment methods are accepted for TPS259827LNRGER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS259827LNRGER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS259827LNRGER?
TPS259827LNRGER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS259827LNRGER 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 TPS259827LNRGER?
For technical support, including TPS259827LNRGER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS259827LNRGER requirements.
6.How does Aetrix verify that TPS259827LNRGER is sourced from the original manufacturer or authorized distributors?
All TPS259827LNRGER 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 TPS259827LNRGER meets industry standards.
7.What is the process for return or replacement of TPS259827LNRGER?
All TPS259827LNRGER units undergo pre-shipment inspection (PSI). If there is an issue with TPS259827LNRGER, 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 TPS259827LNRGER part is unused and in its original packaging.
Return procedure for TPS259827LNRGER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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