My Inquiry
My Account
Texas Instruments TPS259814LRPWR
- Part No.:
- TPS259814LRPWR
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 10-VFQFN
- Datasheet:
-
TPS259814LRPWR.pdf
- Description:
- 2.7-V TO 16-V, 10-A, 6-M EFUSE W
- Quantity:
- Payment:
- Shipping:
Inventory:1,941
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS259814LRPWR from Texas Instruments is a 2.7V–16V, 10A, 6mΩ eFuse IC with latch-off overcurrent response, adjustable transient blanking timer (ITIMER), and integrated power path protection. It delivers fast short-circuit protection (640ns typical), ±10% current limit accuracy above 5A, and operates across –40°C to +125°C junction temperature for server power rails and optical module supplies.
For engineers reviewing the TPS259814LRPWR datasheet, TPS259814LRPWR pinout, TPS259814LRPWR application, or TPS259814LRPWR equivalent, key selection criteria include its latch-off fault behavior (vs auto-retry variants), 10-pin QFN package thermal performance (RθJA = 49.7°C/W), programmable ILIM (1.5A–11A), and dual enable/UVLO/OVLO pin functionality enabling flexible system-level sequencing and surge protection.
Technical Context
The TPS259814LRPWR implements a latch-off circuit-breaker overcurrent response mode-once triggered, it holds OFF until manually reset via EN/UVLO pin cycling. Its transient overcurrent blanking timer (ITIMER) allows controlled peak currents up to 2×ILIM during steady-state without tripping, set by an external capacitor to GND on pin 10.
It integrates dual analog inputs (EN/UVLO and EN/OVLO) that serve as both undervoltage lockout and overvoltage lockout thresholds, respectively, with independent 1.2V nominal thresholds and sub-100mV hysteresis. The device uses internal current-sense amplification and thermal shutdown (TSD = 154°C, 10°C hysteresis) for robust fault containment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 16V - supports wide-input industrial and server rails; absolute max 20V prevents damage during transients. |
| Continuous Current Rating | 10A - verified at TJ ≤ 125°C with RON ≤ 8.4mΩ across full temp/voltage range, enabling high-efficiency power delivery. |
| On-Resistance (RON) | 6mΩ typical at 25°C - minimizes conduction loss (≤ 600mW at 10A), critical for thermal management in dense PCB layouts. |
| Overcurrent Response | Latch-off - ensures persistent fault isolation in safety-critical systems; requires explicit EN/UVLO toggle to recover. |
| Short-Circuit Response Time | 640ns typical - enables protection against destructive arc faults before trace fusing or board damage occurs. |
| Operating Temperature | –40°C to +125°C junction - qualified for enterprise networking, industrial PC, and UHDTV environments with sustained thermal stress. |
| Package | 10-pin HotRod™ QFN (2mm × 2mm, 0.45mm pitch) - low-inductance, thermally enhanced footprint for high-current switching integrity. |
Pinout & Package
TPS259814LRPWR uses a 10-pin, 2mm × 2mm HotRod™ QFN (RPW) package with exposed thermal pad. Pin 1 is top-left corner (IN), pin numbering proceeds counterclockwise. Thermal pad must be soldered to PCB ground plane for optimal RθJB = 15.7°C/W performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power Input | Main input supply connection; rated for 20V absolute max; feeds internal FET source and UVLO/OVLO comparators. |
| 2 EN/OVLO | Analog Input | Configurable as active-low enable or adjustable OVLO threshold (1.2V nominal); resistor divider sets trip point. |
| 3 PG | Digital Output | Open-drain Power Good signal asserted high when FET is fully ON and VOUT ≥ VIN − 0.6V; de-glitched (14µs). |
| 4 FLT | Digital Output | Active-low open-drain fault indicator pulled low on overcurrent, overvoltage, or thermal shutdown; internal 12.57Ω pulldown. |
| 5 OUT | Power Output | Switched output node; connects to load; supports quick discharge (RQOD = 488Ω typical) when disabled. |
| 6 GND | Ground Reference | System ground return for all internal circuits; must be low-impedance connection to thermal pad and PCB ground plane. |
| 7 dVdt | Analog Output | Capacitor-to-GND sets output slew rate (SRON = 0.78–19.71 V/ms); floating for fastest turn-on; no reverse-blocking in L-variant. |
| 8 ILM | Analog I/O | Sets ILIM threshold (1.5–11A) via RILM to GND; also provides ±10% accurate analog current monitor (IMON = 95.3 µA/A). |
| 9 ITIMER | Analog Output | Capacitor-to-GND configures blanking interval for transient overcurrent; open for immediate fast-trip response (640ns). |
| 10 EN/UVLO | Analog Input | Active-high enable with adjustable UVLO (1.2V nominal); resistor divider from IN to GND sets rising/falling thresholds. |
Key Features
| Feature | Design Value |
|---|---|
| Latch-off fault response | Ensures permanent isolation after overcurrent event-eliminates uncontrolled auto-retry cycles in mission-critical power domains. |
| Adjustable transient blanking timer (ITIMER) | Allows temporary current peaks up to 2×ILIM without tripping, improving system resilience to startup surges or burst-mode loads. |
| Dual-function EN/UVLO and EN/OVLO pins | Enables single-resistor-divider configuration for both input undervoltage lockout and overvoltage lockout, reducing BOM count. |
| ±10% current limit accuracy (ILIM > 5A) | Guarantees precise protection margin across voltage, temperature, and process variation-critical for predictable fault coverage. |
| Integrated quick output discharge (RQOD = 488Ω) | Drains output capacitance rapidly upon disable, preventing backfeed and ensuring safe hot-swap sequencing. |
Applications
| Optical Module Power Management | Server Board Power Distribution |
|---|---|
Use Scenario: Protecting 3.3V/5V bias rails in SFP+/QSFP transceivers from hot-plug inrush and ESD-induced shorts. IC Role / Device Role / Timing Role: eFuse providing primary overcurrent and overvoltage defense at the module input, with latch-off behavior preventing intermittent faults from disrupting link training. Use Value: Enables reliable hot-swap compliance per IEEE 802.3, reduces field failure rates from connector arcing, and eliminates need for discrete fuse replacement. |
Use Scenario: Securing 12V intermediate bus feeding VRMs and ASICs on server motherboards and PCIe add-in cards. IC Role / Device Role / Timing Role: High-current (10A) power path protector with fast 640ns short-circuit response and thermal shutdown, placed upstream of point-of-load converters. Use Value: Prevents cascading failures during VRM short circuits; latch-off mode avoids uncontrolled re-enabling that could damage downstream silicon. |
| Enterprise Network Switch Protection | Industrial PC Power Sequencing |
Use Scenario: Safeguarding PoE-powered line cards and control-plane processors in data center switches against cable faults and lightning-induced surges. IC Role / Device Role / Timing Role: Dual-threshold (UVLO/OVLO) eFuse with 1.2μs OVLO response and adjustable ILIM, deployed on 48V auxiliary rails. Use Value: Meets UL 2367 and IEC 62368-1 safety certification requirements while supporting programmable trip points for multi-rail architectures. |
Use Scenario: Managing power-up sequencing and fault containment for CPU, GPU, and I/O subsystems in ruggedized IPCs operating in extended temperature ranges. IC Role / Device Role / Timing Role: Junction-temperature-rated (–40°C to +125°C) eFuse with thermal shutdown and quick discharge, used on 5V/3.3V system rails. Use Value: Maintains reliability under thermal cycling and vibration; quick discharge prevents backfeed into isolated domains during maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar eFuse protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS259814ARPWR | Auto-retry overcurrent response instead of latch-off; identical pinout, RON, and timing specs. | Suitable where automatic recovery after transient overload is acceptable (e.g., non-safety-critical peripherals). | Select if system firmware can handle retry coordination and fault logging; avoid where persistent isolation is required post-fault. |
| TPS25942ARVCR | Lower 5.5A rating, 12V max input, different 16-pin WQFN package; includes reverse-current blocking FET driver. | Targeted at lower-power embedded systems needing bidirectional current control and smaller footprint. | Choose only if reverse-current blocking is mandatory and 10A/16V capability is unnecessary; not pin-compatible. |
Compared with TPS259814LRPWR, the TPS259814ARPWR offers identical protection features but auto-retries after fault clearance-making it unsuitable for fail-safe isolation. The TPS25942ARVCR trades current capacity and voltage range for reverse-blocking capability and a larger package, limiting direct substitution in high-density 10A designs.
Availability
TPS259814LRPWR is available at Aetrix Electronics and suitable for server motherboard power distribution, optical transceiver modules, and enterprise network switch designs requiring stable component supply, long-term lifecycle support, and certified safety compliance (UL 2367, IEC 62368-1).
Supply support for TPS259814LRPWR 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 expertise in high-reliability power protection ICs.
The TPS25981x family was designed specifically for high-current, high-reliability power path protection in data center, telecom, and industrial infrastructure-emphasizing latch-off safety, thermal robustness, and programmable fault response.
FAQ
What is the overcurrent protection behavior of TPS259814LRPWR?
The TPS259814LRPWR implements a latch-off overcurrent response: once the current exceeds the programmed ILIM threshold (1.5A–11A), the internal FET turns OFF and remains latched until the EN/UVLO pin is cycled low then high. This prevents automatic re-enabling during persistent faults, ensuring safe isolation in critical systems.
How does the ITIMER pin function in TPS259814LRPWR?
The ITIMER pin on TPS259814LRPWR accepts an external capacitor to GND that sets the duration of the transient overcurrent blanking window. During this interval, output current may exceed ILIM (up to 2×ILIM) without triggering a fault-enabling tolerance of benign load transients while preserving fast 640ns short-circuit response when needed.
Can TPS259814LRPWR drive an external FET for reverse-current blocking?
No. The TPS259814LRPWR does not support reverse-current blocking FET drive. That feature is exclusive to the TPS259813x variants (e.g., TPS259813LRPW). On TPS259814LRPWR, the dVdt pin is dedicated solely to slew-rate control and must not be used for external FET gate drive.
What is the thermal performance of TPS259814LRPWR in its QFN package?
TPS259814LRPWR in the 10-pin HotRod™ QFN (RPW) package achieves RθJA = 49.7°C/W on a 4-layer PCB with thermal vias, and RθJB = 15.7°C/W to the board. Its thermal shutdown activates at TJ = 154°C with 10°C hysteresis, enabling reliable operation at 10A continuous current within the –40°C to +125°C junction range.
How do the EN/UVLO and EN/OVLO pins differ in function on TPS259814LRPWR?
EN/UVLO is an active-high enable input with a 1.2V nominal UVLO threshold; pulling it below 1.09V disables the device. EN/OVLO serves dual roles: as an active-low enable (low = ON) or as an adjustable OVLO input with the same 1.2V threshold-configured via external resistor dividers. Both require termination; neither may float.
TPS259814LRPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- TPS25981x
- Package/Case:
- 10-VFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Electronic Fuse
- Sensing Method:
- High-Side
- Accuracy:
- ±10%
- Voltage - Input:
- 2.7V ~ 16V
- Current - Output:
- 10A
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VQFN-HR (2x2)
TPS259814LRPWR FAQ
1.How can I place an order for TPS259814LRPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS259814LRPWR 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 TPS259814LRPWR reliable?
The price and inventory of TPS259814LRPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS259814LRPWR is usually 5 days.
3.What payment methods are accepted for TPS259814LRPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS259814LRPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS259814LRPWR?
TPS259814LRPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS259814LRPWR 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 TPS259814LRPWR?
For technical support, including TPS259814LRPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS259814LRPWR requirements.
6.How does Aetrix verify that TPS259814LRPWR is sourced from the original manufacturer or authorized distributors?
All TPS259814LRPWR 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 TPS259814LRPWR meets industry standards.
7.What is the process for return or replacement of TPS259814LRPWR?
All TPS259814LRPWR units undergo pre-shipment inspection (PSI). If there is an issue with TPS259814LRPWR, 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 TPS259814LRPWR part is unused and in its original packaging.
Return procedure for TPS259814LRPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS259814LRPWR Tags
.jpg)
-
PSSI2021SAY,115
Nexperia USA Inc.
-
BCR401RE6327HTSA1
Infineon Technologies
-
INA199B2DCKR
Texas Instruments
-
INA199A1DCKR
Texas Instruments
-
INA199B1DCKR
Texas Instruments
-
NSI45015WT1G
onsemi
-
NSI45020T1G
onsemi
-
NSI45030AT1G
onsemi
-
NSI45025AT1G
onsemi
-
NSI45020AT1G
onsemi
-
NSI50010YT1G
onsemi
-
LM334Z/NOPB
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
