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Texas Instruments TPS259461ARPWR
- Part No.:
- TPS259461ARPWR
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 10-VFQFN
- Datasheet:
-
TPS259461ARPWR.pdf
- Description:
- IC ELECTRONIC FUSE 6% 10VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:6,926
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Product details
Overview
TPS259461ARPWR from Texas Instruments is a bidirectional eFuse IC providing overvoltage, overcurrent, and thermal protection for 2.7–23 V power rails with 5.5-A continuous current capability, 28.3-mΩ on-resistance, and auto-retry fault response-designed for USB On-The-Go (OTG) power path control in smartphones and tablets.
For engineers reviewing the TPS259461ARPWR datasheet, TPS259461ARPWR pinout, TPS259461ARPWR application, or TPS259461ARPWR equivalent, key selection factors include its SPLYGD/FLT dual digital fault signaling, adjustable ILIM (0.5–6 A), 1.2-μs OVLO response, 500-ns short-circuit trip, and QFN 2 mm × 2 mm HotRod package with back-to-back FET architecture enabling reverse-current blocking.
Technical Context
The TPS259461ARPWR integrates complementary high-side and low-side MOSFETs to support bidirectional conduction during ON state and full reverse-current blocking during OFF state-critical for USB OTG host/peripheral role switching. Its protection logic combines active current limiting with scalable fast-trip (2×ILIM) and fixed 22.2-A short-circuit thresholds, plus programmable blanking via ITIMER capacitor.
Control is implemented through analog-configurable pins: EN/UVLO sets undervoltage lockout (1.20 V typ.), OVLO defines overvoltage threshold (1.20 V typ.), and ILM serves dual roles-setting current limit via RILM (549 Ω → 6.07 A) and outputting ±6% accurate analog load current monitoring. SPLYGD and FLT provide independent open-drain status signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 23 V-supports wide-input portable and industrial rails including USB PD and 12-V systems. |
| Continuous Current Rating | 5.5 A at TJ ≤ 125°C-enables robust power delivery to high-current peripherals without external heatsinking. |
| On-Resistance (RON) | 28.3 mΩ typ. at 12 V, 3 A-minimizes conduction loss (<160 mW at 5.5 A) and self-heating in compact layouts. |
| Overvoltage Response Time | 1.2 μs typ.-cuts off output before transient surges damage downstream circuitry. |
| Short-Circuit Trip Time | 500 ns typ.-prevents destructive energy dissipation during OUT-to-GND faults. |
| Current Limit Accuracy | ±10% for ILIM > 1 A-ensures predictable foldback behavior across voltage, temperature, and process variation. |
| Junction Temperature Range | –40°C to +125°C-validated for automotive cabin, industrial, and consumer environments with thermal shutdown at 154°C. |
Pinout & Package
TPS259461ARPWR uses a 10-pin QFN (RPW) package with 2 mm × 2 mm body size, 0.45-mm pitch, and exposed thermal pad-optimized for thermal performance and PCB area efficiency in space-constrained designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Power input | Main supply rail connection; supports up to 28 V absolute max; feeds internal UVLO and OVLO comparators. |
| OUT | Power output | Protected load rail; bidirectional current path enabled only when device is ON; blocks reverse flow when disabled. |
| EN/UVLO | Analog enable/UVLO input | Active-high enable with adjustable undervoltage lockout (1.20 V typ.); resistor divider sets turn-on threshold. |
| OVLO | Analog overvoltage threshold input | Sets adjustable overvoltage lockout point (1.20 V typ.); also functions as active-low enable if needed. |
| SPLYGD | Digital supply-good output | Open-drain indicator asserted high when IN is valid and inrush completes-replaces PG in TPS259461x variant. |
| FLT | Digital fault output | Active-low open-drain signal pulled low on overcurrent, overvoltage, or thermal fault; enables system-level fault logging. |
| ITIMER | Analog blanking timer control | Capacitor-to-GND sets overcurrent blanking interval; allows temporary peaks up to 2×ILIM without tripping. |
| ILM | Current limit & monitor | Resistor-to-GND sets ILIM (549 Ω → 6.07 A); pin voltage provides ±6% accurate analog IOUT monitor signal. |
| dVdt | Slew rate control | Capacitor-to-GND adjusts output rise time (0.5–44.8 V/ms); prevents inrush-induced voltage droop or ringing. |
| GND | Ground reference | System ground return for all internal circuits and thermal pad; must be low-impedance connection. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional current support | Back-to-back FET architecture enables safe USB OTG role reversal while blocking reverse current in OFF state. |
| Auto-retry fault recovery | 110-ms retry interval after fault clearance-maintains system availability without manual reset or host intervention. |
| Adjustable slew rate control | dVdt pin accepts external capacitor to tune output rise time from 0.5 to 44.8 V/ms-eliminates need for discrete RC snubbers. |
| Dual digital fault signaling | SPLYGD confirms stable input and successful inrush; FLT asserts low on any fault-enables independent status monitoring. |
| UL 2367 & IEC 62368-1 certified | Recognized under UL File E339631 and CB-certified-reduces safety compliance effort for end equipment. |
Applications
| USB On-The-Go (OTG) | Smartphones |
|---|---|
Use Scenario: Bidirectional power delivery between smartphone and peripheral (e.g., flash drive, keyboard) during role switch. IC Role / Device Role / Timing Role: eFuse power path controller enforcing overcurrent/overvoltage limits and enabling reverse-current blocking during role reversal. Use Value: Prevents bus collapse during hot-plug events and ensures safe 5-V/3-A OTG operation per USB 2.0 specifications. |
Use Scenario: Primary power rail protection for battery-charging circuitry and USB-C port interface. IC Role / Device Role / Timing Role: High-speed fault protector with 500-ns short-circuit response and 1.2-μs OVLO-securing SoC and PMIC inputs. Use Value: Eliminates need for discrete TVS diodes and polyfuses, reducing BOM count and PCB footprint by >40%. |
| Tablets | Wireless Chargers |
Use Scenario: Input protection for USB-C PD input stage handling variable 5–20 V charging profiles. IC Role / Device Role / Timing Role: Adjustable ILIM (0.5–6 A) and OVLO (programmable up to 22 V) adapt to diverse PD voltage/current combinations. Use Value: Enables single hardware design to support USB PD 3.0 PPS and legacy QC protocols without firmware changes. |
Use Scenario: Output-stage protection for transmitter coil driver supplying 5–15 V to receiver coils. IC Role / Device Role / Timing Role: Fast-trip current limiter with 2×ILIM blanking window tolerates Qi-compliant burst-mode transients. Use Value: Prevents false trips during Qi EPP communication bursts while maintaining <100-ns fault detection for coil shorts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar eFuse protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS259460ARPWR | Features Power Good (PG) and adjustable PGTH instead of SPLYGD/FLT; same ILIM range and protection specs. | Preferred where system requires power-rail validation timing (e.g., FPGA configuration sequencing) rather than discrete fault indication. | Select TPS259460ARPWR when PG threshold adjustment is needed; TPS259461ARPWR is optimal for fault isolation and logging. |
| TPS259472ARPWR | Higher 8.5-A rating, 18-mΩ RON, identical pinout and feature set except fixed 110-ms retry and no UVLO adjustability. | Better suited for high-power accessories (e.g., USB-C docks) requiring >5.5 A; lacks EN/UVLO resistor-divider flexibility. | Choose TPS259461ARPWR for design flexibility in mid-power OTG devices; upgrade to TPS259472ARPWR only if current headroom is critical. |
Compared with TPS259460ARPWR, TPS259461ARPWR trades PGTH configurability for dedicated SPLYGD/FLT signaling-enhancing fault diagnostics in resource-constrained hosts. Against TPS259472ARPWR, it offers lower cost and wider UVLO adjustability at the expense of current headroom.
Availability
TPS259461ARPWR is available at Aetrix Electronics and suitable for USB OTG, smartphone power management, and wireless charging applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS259461ARPWR 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, embedded processing, and connectivity solutions with emphasis on reliability, precision, and power efficiency.
The TPS25946xx family targets compact, high-integrity power path protection in portable electronics-designed specifically for USB OTG, mobile accessories, and multi-rail systems needing bidirectional control and fast fault response.
FAQ
What is the maximum continuous current rating for TPS259461ARPWR?
The TPS259461ARPWR supports 5.5 A continuous current at junction temperatures ≤125°C, verified across the full 2.7–23 V input range. This rating assumes proper PCB thermal design per TI's recommended layout with thermal vias under the exposed pad. Derating applies above 125°C per the device's thermal shutdown threshold of 154°C.
How does TPS259461ARPWR differ from TPS259460ARPWR in fault signaling?
TPS259461ARPWR replaces the PG/PGTH outputs of TPS259460ARPWR with SPLYGD (supply-good) and FLT (fault) pins-providing independent open-drain signals for input validation and fault event indication. This eliminates shared PGTH resistor dependencies and simplifies host MCU interrupt handling for fault diagnostics.
Can TPS259461ARPWR support bidirectional current flow in both ON and OFF states?
TPS259461ARPWR supports bidirectional current flow only in the ON state via integrated back-to-back FETs. In the OFF state, it blocks current flow in both directions-critical for USB OTG role reversal safety. Reverse current is never permitted during fault conditions or disable sequences.
What is the purpose of the ITIMER pin on TPS259461ARPWR?
The ITIMER pin on TPS259461ARPWR sets the overcurrent blanking interval using an external capacitor. This allows transient load currents up to 2×ILIM to pass without triggering current limit, preventing nuisance trips during normal operation-such as motor startup or capacitor charging-while retaining fast 500-ns short-circuit response.
Is TPS259461ARPWR certified for safety standards?
Yes, TPS259461ARPWR is UL 2367 recognized (File E339631) and IEC 62368-1 CB certified. These certifications validate its suitability for end-equipment safety compliance in consumer and industrial applications without requiring additional external protection components for basic insulation requirements.
TPS259461ARPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Electronic Fuse
- Sensing Method:
- High-Side
- Accuracy:
- ±6%
- Voltage - Input:
- 2.7V ~ 23V
- Current - Output:
- 5.5A
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VQFN-HR (2x2)
TPS259461ARPWR FAQ
1.How can I place an order for TPS259461ARPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS259461ARPWR 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 TPS259461ARPWR reliable?
The price and inventory of TPS259461ARPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS259461ARPWR is usually 5 days.
3.What payment methods are accepted for TPS259461ARPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS259461ARPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS259461ARPWR?
TPS259461ARPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS259461ARPWR 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 TPS259461ARPWR?
For technical support, including TPS259461ARPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS259461ARPWR requirements.
6.How does Aetrix verify that TPS259461ARPWR is sourced from the original manufacturer or authorized distributors?
All TPS259461ARPWR 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 TPS259461ARPWR meets industry standards.
7.What is the process for return or replacement of TPS259461ARPWR?
All TPS259461ARPWR units undergo pre-shipment inspection (PSI). If there is an issue with TPS259461ARPWR, 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 TPS259461ARPWR part is unused and in its original packaging.
Return procedure for TPS259461ARPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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