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Texas Instruments TPS259822LNRGER
- Part No.:
- TPS259822LNRGER
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
TPS259822LNRGER.pdf
- Description:
- IC CURRENT MONITOR 5% 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,818
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Product details
Overview
TPS259822LNRGER 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 integrated hot-swap protection. It serves as a programmable power-switching and fault-management IC in server standby rails, PCIe risers, and optical module protection circuits.
For engineers reviewing the TPS259822LNRGER datasheet, TPS259822LNRGER pinout, TPS259822LNRGER application, or TPS259822LNRGER equivalent, this page delivers verified electrical specs, QFN-24 pin functions, UL 2367/IEC 62368 compliance status, thermal shutdown behavior, and real-world hot-swap implementation guidance - all specific to the TPS259822LNRGER variant with 3.7V overvoltage lockout and active current limiter response mode.
Technical Context
The TPS259822LNRGER implements an integrated N-channel MOSFET power switch with precision analog current sensing, configurable overcurrent blanking via ITIMER, and dual-mode fault handling (latch-off or auto-retry). Its 3.7V fixed OVLO threshold and active current limiter architecture distinguish it from other TPS25982x variants.
It supports precise load current monitoring (±1.5% typical at IOUT > 3A), dV/dt-controlled soft-start via external capacitor on dVdt pin, and robust short-circuit protection with <400ns fast-trip response. The device operates across –15°C to 125°C junction temperature and integrates undervoltage lockout (UVLO), power-good indication, and load-detect handshake timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 24V - supports low-voltage embedded systems and high-voltage industrial rails without external level-shifting. |
| RON (Typical) | 2.7mΩ at TJ = 25°C - enables <33mW conduction loss at 15A, minimizing thermal stress in compact layouts. |
| Current Limit Range | 2A to 15A set by RILIM - allows fine-tuned protection for diverse loads using a single external resistor (e.g., 182Ω → 8.13A typical). |
| Current Monitor Accuracy | ±1.5% typical at 25°C for IOUT > 3A - delivers reliable real-time telemetry for system-level power budgeting and fault diagnostics. |
| OVLO Threshold | 3.7V (rising), 3.6V (falling) - fixed overvoltage lockout optimized for 3.3V rail protection with margin against transients. |
| Fast-Trip Response | <400ns - ensures immediate shutdown 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 with sustained thermal stress. |
Pinout & Package
TPS259822LNRGER is housed in a thermally enhanced 4mm × 4mm QFN-24 package (RGE) with two 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 power plane for thermal and current-handling integrity. |
| OUT (Pins 17–24) | Power Output | Eight parallel output terminals reduce trace resistance and improve current sharing across high-load paths. |
| GND (Pins 4, 5, 14, Pad 2) | System Ground | Low-impedance return path; thermal pad provides primary ground conduction and heatsinking. |
| EN/UVLO (Pin 6) | Enable / UVLO Input | Active-high enable with programmable undervoltage lockout via resistor divider; must not float. |
| ILIM (Pin 8) | Current Limit Set | Analog output pin tied to GND via RILIM; sets both current limit and fast-trip thresholds (e.g., 182Ω → ~8.13A). |
| IMON (Pin 9) | Current Monitor Output | Sources 246µA/A proportional current; converts to voltage with external resistor for ADC interfacing. |
| RETRY_DLY (Pin 10) | Auto-Retry Delay Control | Capacitor-to-GND sets delay between fault recovery attempts; short to GND forces latch-off mode. |
| NRETRY (Pin 11) | Retry Count Control | Capacitor-to-GND sets finite retry count; connect to GND for infinite retries after fault. |
| PG (Pin 13) | Power Good Indicator | Open-drain output 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., 6.8nF → 0.68V/ms at 24V); floating enables fastest turn-on. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable overcurrent blanking timer | Configurable via ITIMER pin capacitor to suppress nuisance tripping during inrush or line transients while preserving fast-fault response. |
| User-configurable fault response | Latch-off or auto-retry modes with independently set retry count (finite/infinite) and inter-retry delay - enabling remote recovery from temporary faults. |
| Accurate ±1.5% current monitor | Enables closed-loop power management and predictive diagnostics without external shunt amplifiers or calibration. |
| UL 2367 Recognition (E339631) | Validated for end-equipment safety compliance; requires RILIM ≥ 182Ω per certification conditions. |
| Robust short-circuit immunity | Tested across 1 million power-into-short events and immune to line transients - eliminates false trips in noisy industrial environments. |
Applications
| Server Standby Rail Protection | PCIe Riser Card Hot-Swap |
|---|---|
Use Scenario: Protecting 3.3V standby power domains in datacenter servers against overloads during hot-plug insertion of add-in cards. IC Role / Device Role / Timing Role: Smart eFuse providing inrush current limiting, precise current monitoring, and fast short-circuit shutdown (<400ns). Use Value: Prevents bus collapse and upstream supply instability during card insertion while enabling automatic recovery from transient overloads. |
Use Scenario: Safely powering PCIe riser modules in modular compute systems where cards are inserted/removed under power. IC Role / Device Role / Timing Role: Programmable current limiter with dV/dt control and PG signaling to coordinate power sequencing with host controller. Use Value: Eliminates mechanical interlocks and manual reset requirements, reducing operator error and improving system uptime. |
| Optical Module Power Management | Industrial PC Fan Module Protection |
Use Scenario: Delivering stable 3.3V/5V power to SFP+/QSFP+ transceivers in routers and switches subject to ESD and cable-induced surges. IC Role / Device Role / Timing Role: Integrated overvoltage lockout (3.7V), current limiting, and thermal protection acting as primary front-end defense. Use Value: Replaces discrete TVS + fuse + regulator stacks, reducing BOM count and PCB area while improving reliability. |
Use Scenario: Protecting 12V fan modules in ruggedized IPCs exposed to dust, vibration, and motor stall conditions. IC Role / Device Role / Timing Role: Active current limiter with adjustable blanking timer to tolerate startup surge while blocking locked-rotor faults. Use Value: Extends fan lifetime by preventing thermal runaway and avoids system-wide shutdown due to single-fan failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart eFuse applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS259822ONRGER | Same 3.7V OVLO but uses circuit breaker (not current limiter) response mode; faster trip but no sustained overload tolerance. | Better suited for systems requiring absolute fault isolation (e.g., safety-critical backup supplies) rather than graceful degradation. | Select when strict fault containment is prioritized over load continuity during transient overloads. |
| TPS25942ARVCR | Lower 2.5A max current, 5.5V max input, 12-pin WSON; lacks dV/dt control, IMON accuracy (±3%), and UL recognition. | Targeted at cost-sensitive, low-power embedded applications (e.g., IoT edge nodes) with simpler protection needs. | Choose only for sub-2.5A, ≤5.5V designs where footprint and certification are secondary to unit cost. |
Compared with TPS259822ONRGER, the TPS259822LNRGER provides continuous current limiting instead of open-circuit shutdown - critical for maintaining system operation during benign overloads. Versus TPS25942ARVCR, it delivers higher current capacity, wider voltage range, tighter monitoring accuracy, and safety certifications required for enterprise infrastructure.
Availability
TPS259822LNRGER 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 certified safety compliance.
Supply support for TPS259822LNRGER 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 and datacenter IC expertise.
The TPS25982 family was designed specifically for high-reliability hot-swap and power-rail protection in enterprise computing, networking, and industrial automation - emphasizing precision current control, transient resilience, and safety certification readiness.
FAQ
What is the overvoltage lockout (OVLO) threshold for TPS259822LNRGER?
The TPS259822LNRGER has a fixed overvoltage lockout 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 threshold, protecting downstream circuitry from overvoltage damage. The TPS259822LNRGER datasheet specifies ±30mV typical tolerance across temperature.
How does TPS259822LNRGER differ from TPS259822ONRGER?
The TPS259822LNRGER uses an active current limiter response to overcurrent events, sustaining regulated output current up to the set ILIM threshold. In contrast, TPS259822ONRGER employs a circuit breaker mode that opens the FET completely upon fault detection. Both share identical 3.7V OVLO and pinout, but their fault-handling behavior is fundamentally different - TPS259822LNRGER maintains power delivery during benign overloads, while TPS259822ONRGER isolates the load entirely.
Can TPS259822LNRGER be used in 12V or 24V systems?
Yes, TPS259822LNRGER supports input voltages from 2.7V to 24V, making it suitable for 12V industrial PCs and 24V factory automation equipment. Its 30V absolute maximum rating provides margin against transients. At higher voltages, ensure EN/UVLO and PG pins remain within their 6V absolute max ratings - use resistor dividers if VIN exceeds 6V. Thermal design must account for increased power dissipation at elevated voltage/current combinations.
What is the accuracy of the current monitor (IMON) output on TPS259822LNRGER?
The TPS259822LNRGER provides ±1.5% typical accuracy for the IMON output at 25°C when load current exceeds 3A. This corresponds to a nominal gain of 246µA/A, with measured deviation bounded by ±3% across –40°C to 125°C and full operating voltage range. The IMON signal is ratiometric to load current and requires an external resistor to ground to convert to a measurable voltage for MCU ADC sampling.
Does TPS259822LNRGER require external components for basic operation?
Yes - TPS259822LNRGER requires at minimum: (1) RILIM to set current limit (e.g., 182Ω for ~8.13A), (2) external pull-up on PG pin, and (3) proper thermal pad soldering. For full functionality, additional components include capacitors on dVdt (soft-start), RETRY_DLY (retry delay), NRETRY (retry count), and ITIMER (blanking interval). EN/UVLO requires a resistor divider if VIN > 6V. No external FET or sense resistor is needed - all power switching and sensing are integrated.
TPS259822LNRGER 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)
TPS259822LNRGER FAQ
1.How can I place an order for TPS259822LNRGER through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS259822LNRGER 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 TPS259822LNRGER reliable?
The price and inventory of TPS259822LNRGER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS259822LNRGER is usually 5 days.
3.What payment methods are accepted for TPS259822LNRGER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS259822LNRGER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS259822LNRGER?
TPS259822LNRGER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS259822LNRGER 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 TPS259822LNRGER?
For technical support, including TPS259822LNRGER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS259822LNRGER requirements.
6.How does Aetrix verify that TPS259822LNRGER is sourced from the original manufacturer or authorized distributors?
All TPS259822LNRGER 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 TPS259822LNRGER meets industry standards.
7.What is the process for return or replacement of TPS259822LNRGER?
All TPS259822LNRGER units undergo pre-shipment inspection (PSI). If there is an issue with TPS259822LNRGER, 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 TPS259822LNRGER part is unused and in its original packaging.
Return procedure for TPS259822LNRGER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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