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Texas Instruments TPS259573DSGR
- Part No.:
- TPS259573DSGR
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
TPS259573DSGR.pdf
- Description:
- IC ELECTRONIC FUSE 7.5% 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:9,085
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Product details
Overview
TPS259573DSGR from Texas Instruments is a programmable overvoltage-lockout eFuse IC for input protection in 2.7 V to 18 V power rails, featuring 34 mΩ typical RON, 4-A current limit accuracy of ±7.5%, 5-µs overvoltage clamp response, and auto-retry thermal shutdown - deployed in industrial systems, SSDs, and set-top boxes.
For engineers reviewing the TPS259573DSGR datasheet, TPS259573DSGR pinout, TPS259573DSGR application, or TPS259573DSGR equivalent, key selection criteria include its active-low EN/OVLO pin with user-defined overvoltage lockout threshold, adjustable slew rate via external capacitor, and ILM-based current monitoring with ±7.5% limit accuracy across –40°C to +125°C.
Technical Context
The TPS259573DSGR implements an integrated N-channel MOSFET with internal charge pump and control logic to enforce programmable overvoltage lockout (OVLO) using an external resistor divider on the EN/OVLO pin, while maintaining fast fault detection via dedicated FLT output and independent current limiting via ILM pin voltage feedback.
It operates in auto-retry thermal shutdown mode with 157°C trip point and 5°C hysteresis, supports output slew rate control via dVdt pin capacitor (3300 pF typical), and delivers accurate load current monitoring with 276 µA/A gain (±2% variation over temperature and load).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 18 V - supports wide-range adapter-powered and industrial supply rails without external regulation |
| RON (Typical) | 34 mΩ at 25°C - enables low conduction loss and <170 mW dissipation at 4 A continuous load |
| Current Limit Accuracy | ±7.5% - ensures predictable fault current threshold across temperature and supply variations |
| OVLO Response Time | 3 µs - guarantees rapid disable upon overvoltage detection before downstream damage occurs |
| Thermal Shutdown Threshold | 157°C with 5°C hysteresis - provides robust self-protection during sustained overload or poor PCB thermal design |
| ILM Monitor Gain | 276 µA/A ±2% - allows precise real-time load current sensing with minimal external components |
| Quiescent Current | 250 µA typical - minimizes standby power draw in always-on systems |
Pinout & Package
TPS259573DSGR uses an 8-pin WSON package (2.00 mm × 2.00 mm) with exposed thermal pad connected to GND for enhanced heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| dVdt | Analog I/O | Capacitor-to-GND sets output turn-on slew rate; floating = fastest ramp (38.2 V/ms at 12 V) |
| EN/OVLO | Analog input | Active-low enable with programmable OVLO threshold (1.2 V typ); requires resistor divider for user-defined cutoff |
| IN (pins 3,4) | Power input | Dual-source connection for high-current path; must be routed with low-inductance layout |
| OUT | Power output | Switched output node; clamped internally during overvoltage events (no external TVS required) |
| FLT | Digital output | Open-drain fault indicator pulled low on overcurrent, overtemperature, or OVLO event |
| ILM | Analog I/O | Sets current limit via external resistor (487 Ω → 4.17 A) and outputs proportional monitor voltage |
| GND (pin 8 + pad) | Ground | Primary signal and thermal reference; exposed pad must be soldered to PCB ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Overvoltage Lockout | User-configurable input cutoff threshold via resistor divider on EN/OVLO pin - eliminates need for external supervisor IC |
| Auto-Retry Thermal Protection | 157°C shutdown with 93-ms retry interval - maintains system availability after transient overloads without manual reset |
| Accurate Load Current Monitoring | 276 µA/A gain with ±2% variation - enables closed-loop current control and predictive diagnostics without shunt resistor |
| Adjustable Output Slew Rate | Configurable rise time (10–763 µs) via dVdt capacitor - prevents inrush-induced bus droop or false resets |
| IEC 62368-1 Certified | Compliant with end-equipment safety standard including single-point-failure testing - reduces certification effort for final products |
Applications
| Industrial Power Distribution | SSD/HDD Power Management |
|---|---|
|
Use Scenario: Protecting 12-V backplane rails feeding multiple field-replaceable modules against hot-swap surges and short circuits. IC Role / Device Role / Timing Role: eFuse providing current limiting, OVLO, and fault reporting - replaces discrete FET + controller + sense resistor. Use Value: Eliminates need for external current-sense amplifier and reduces BOM count by 4+ components while enabling programmable OVLO at 13.7 V or custom threshold. |
Use Scenario: Safeguarding SATA/M.2 SSDs during insertion into powered host systems with variable adapter voltages. IC Role / Device Role / Timing Role: Input protector with 5-µs overvoltage clamp and 250-µs current-limit response - prevents NAND flash corruption during hot-plug transients. Use Value: Enables reliable hot-swap compliance without derating input voltage, supporting 18-V max operation while clamping at user-defined OVLO threshold. |
| Set-Top Box Power Sequencing | White Goods Control Board |
|
Use Scenario: Managing 5-V/12-V rails powering tuners, demodulators, and HDMI PHYs subject to ESD and load-dump events. IC Role / Device Role / Timing Role: Fault-tolerant power switch with FLT-driven microcontroller interrupt and ILM-based load telemetry. Use Value: Provides real-time current telemetry (276 µA/A) for firmware-based thermal derating and early failure detection before catastrophic overcurrent. |
Use Scenario: Protecting motor driver and sensor sub-systems in washing machines and refrigerators operating from unregulated 12-V supplies. IC Role / Device Role / Timing Role: Robust eFuse with –40°C to +125°C rating and IEC 62368-1 certification - withstands harsh thermal cycling and humidity. Use Value: Meets appliance safety requirements out-of-box with no additional isolation or redundancy components required for single-point-failure compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar eFuse applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS259531DSGR | Fixed 5.7-V overvoltage clamp (not programmable); active-high EN; auto-retry | Lacks user-defined OVLO - suitable only where fixed clamp voltage suffices | Select when system-level OV threshold is fixed and board space permits simpler enable routing |
| TPS259421RGET | WQFN-20 package; 2.7–24 V range; 5.5-A limit; includes reverse-voltage protection | Higher voltage/current rating and reverse blocking - larger footprint and higher cost | Choose for 24-V systems or where reverse-current prevention is mandatory |
Compared with TPS259531DSGR and TPS259421RGET, the TPS259573DSGR uniquely balances programmable OVLO, compact 2-mm WSON packaging, and auto-retry behavior - making it optimal for space-constrained 12-V industrial and consumer electronics requiring adaptive overvoltage response.
Availability
TPS259573DSGR is available at Aetrix Electronics and suitable for industrial systems, SSD/HDD power management, and set-top box designs requiring stable component supply, long-term lifecycle support, and certified safety compliance.
Supply support for TPS259573DSGR 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 delivering analog and embedded processing solutions with emphasis on reliability, precision, and power efficiency.
The TPS2595xx family targets robust power-path protection in space-constrained applications - designed specifically for hot-swap, adapter-powered systems, and safety-certified end equipment.
FAQ
What is the overvoltage protection mechanism used in the TPS259573DSGR?
The TPS259573DSGR implements programmable overvoltage lockout (OVLO), not fixed clamping. It monitors the EN/OVLO pin voltage - derived from an external resistor divider across VIN - and disables the internal FET when that voltage exceeds 1.2 V (typical). This allows users to set custom input cutoff thresholds such as 13.7 V or 15 V, unlike fixed-clamp variants like TPS259531DSGR.
How does the TPS259573DSGR achieve accurate current limiting without a sense resistor?
The TPS259573DSGR uses its ILM pin to both set and monitor current: an external resistor (e.g., 487 Ω) between ILM and GND defines the 4.17-A limit, while the same pin outputs a proportional analog voltage (276 µA per ampere of load current). This dual-function architecture eliminates the need for a separate shunt resistor and amplifier, reducing component count and board area.
What is the thermal performance of the TPS259573DSGR in its WSON package?
The TPS259573DSGR in the 2-mm WSON package has a junction-to-board thermal resistance (RθJB) of 28.3°C/W. With proper PCB copper pour under the exposed thermal pad, it sustains 4-A continuous current at ambient temperatures up to +85°C. Its 157°C thermal shutdown with 5°C hysteresis and 93-ms auto-retry interval ensures safe recovery after transient overloads without manual intervention.
Can the TPS259573DSGR be used in systems requiring UL 2367 or IEC 62368-1 certification?
Yes - the TPS259573DSGR carries UL 2367 Recognition (File No. E169910) and IEC 62368-1 certification, including validation for safe operation during single-point-failure conditions (e.g., ILM pin open/short). These certifications reduce end-product qualification effort for industrial, medical, and consumer appliances targeting global safety approvals.
What are the key timing parameters for fault response in the TPS259573DSGR?
The TPS259573DSGR responds to faults with tOVC = 5 µs for overvoltage clamp activation, tLIM = 250 µs for current-limit enforcement, and tTSD,RST = 93 ms for thermal shutdown auto-retry. Its FLT pin asserts within 3 µs of OVLO detection, enabling fast system-level fault handling via microcontroller interrupt without additional logic.
TPS259573DSGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Electronic Fuse
- Sensing Method:
- -
- Accuracy:
- ±7.5%
- Voltage - Input:
- 2.7V ~ 18V
- Current - Output:
- 4A
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (2x2)
TPS259573DSGR FAQ
1.How can I place an order for TPS259573DSGR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS259573DSGR 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 TPS259573DSGR reliable?
The price and inventory of TPS259573DSGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS259573DSGR is usually 5 days.
3.What payment methods are accepted for TPS259573DSGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS259573DSGR transactions.
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4.How is shipping managed for TPS259573DSGR?
TPS259573DSGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS259573DSGR 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 TPS259573DSGR?
For technical support, including TPS259573DSGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS259573DSGR requirements.
6.How does Aetrix verify that TPS259573DSGR is sourced from the original manufacturer or authorized distributors?
All TPS259573DSGR 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 TPS259573DSGR meets industry standards.
7.What is the process for return or replacement of TPS259573DSGR?
All TPS259573DSGR units undergo pre-shipment inspection (PSI). If there is an issue with TPS259573DSGR, 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 TPS259573DSGR part is unused and in its original packaging.
Return procedure for TPS259573DSGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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