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Texas Instruments TPS54260DRCR
- Part No.:
- TPS54260DRCR
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS54260DRCR.pdf
- Description:
- IC REG BUCK ADJ 2.5A 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:8,795
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Product details
Overview
TPS54260DRCR from Texas Instruments is a 3.5-V to 60-V input, 2.5-A synchronous step-down DC/DC converter with integrated 200-mΩ high-side N-channel MOSFET, Eco-mode™ pulse-skipping for light-load efficiency, and adjustable 100-kHz to 2.5-MHz switching frequency. It delivers regulated 3.3-V output at up to 2.5 A in industrial power supplies requiring wide VIN tolerance and low quiescent current.
For engineers reviewing the TPS54260DRCR datasheet, TPS54260DRCR pinout, TPS54260DRCR application, or TPS54260DRCR equivalent, key selection criteria include input voltage range (3.5–60 V), output current capability (2.5 A), Eco-mode operation (138-μA IQ), PWRGD open-drain monitoring, and RT/CLK synchronization support - all critical for 12-V/24-V/48-V embedded power rails.
Technical Context
This current-mode buck regulator implements fixed-frequency PWM control with slope compensation to prevent subharmonic oscillation across 0–100% duty cycle. Its internal error amplifier drives COMP to regulate VSENSE against a 0.8-V reference, while the RT/CLK pin supports both resistor-set frequency tuning and external clock synchronization via PLL.
The device integrates boot UVLO protection, thermal shutdown, frequency foldback during overload, and an open-drain PWRGD comparator asserting outside 94–107% of nominal VOUT. The SS/TR pin enables programmable soft-start, tracking, and sequencing, while EN provides adjustable UVLO with internal pull-up and 1.25-V threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5 V to 60 V - supports direct connection to unregulated 12-V, 24-V, and 48-V industrial bus rails without pre-regulation. |
| Continuous Output Current | 2.5 A - sufficient for powering microcontrollers, sensors, and communication ICs in compact industrial modules. |
| Quiescent Current (Eco-mode) | 138 μA - enables >90% efficiency at 10-mA load (VIN=12 V, VOUT=3.3 V), critical for always-on systems. |
| Switching Frequency Range | 100 kHz to 2.5 MHz - allows trade-off between inductor size (higher fSW → smaller L) and efficiency (lower fSW → lower switching loss). |
| Reference Voltage | 0.8 V ±1% - sets precise output regulation via external resistor divider; enables VOUT as low as 0.8 V. |
| High-Side RDS(on) | 200 mΩ @ VIN=12 V - reduces conduction loss and thermal stress; enables full 2.5-A output without external MOSFET. |
| PWRGD Threshold Accuracy | ±6% window (94–107% of VREF) - provides reliable system-level power sequencing and fault detection without external comparators. |
Pinout & Package
TPS54260DRCR uses a thermally enhanced 10-pin 3-mm × 3-mm VSON package with exposed PowerPAD™ ground pad requiring PCB solder connection for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap supply node | Connects to 0.1-μF ceramic capacitor between BOOT and PH; supplies gate drive voltage for internal high-side MOSFET. |
| VIN | Main input supply | Accepts 3.5–60 V; powers internal circuitry and high-side switch; requires local bulk and ceramic decoupling. |
| EN | Enable / UVLO control | Pull below 1.25 V to disable; float or tie to VIN for enable; external resistor divider adjusts UVLO threshold. |
| SS/TR | Soft-start & tracking input | Capacitor sets output ramp time; resistor divider enables power sequencing with other rails or reference voltages. |
| RT/CLK | Frequency setting / sync input | Resistor to GND sets fSW (100 kHz–2.5 MHz); external clock signal synchronizes switching edges via PLL. |
| PWRGD | Open-drain power-good output | Asserts low when VOUT is outside 94–107% of target; requires external pull-up for system reset or enable signaling. |
| VSENSE | Feedback inverting input | Compares divided output voltage to 0.8-V internal reference; sets regulated VOUT via R1/R2 divider. |
| COMP | Error amplifier output | Drives current-mode PWM comparator; connect Type II/III compensation network between COMP and VSENSE. |
| GND | Analog & power ground | Common reference for internal circuits; must be connected to exposed PowerPAD™ for thermal path and noise control. |
| PH | Power switch source node | Connects to inductor and bootstrap capacitor; carries high di/dt switching current; requires tight layout to minimize EMI. |
Key Features
| Feature | Design Value |
|---|---|
| Eco-mode™ pulse-skipping | Reduces no-load IQ to 138 μA while maintaining regulation - extends battery life in low-power IoT nodes and metering devices. |
| Integrated boot diode | Eliminates external bootstrap diode; simplifies layout and improves reliability in space-constrained designs. |
| Adjustable UVLO with EN pin | Enables custom brown-out protection using two resistors - avoids premature shutdown during transient dips on 24-V industrial lines. |
| Open-drain PWRGD with hysteresis | Provides system-level power sequencing and fault indication without external logic - supports daisy-chained reset chains. |
| Thermal shutdown + frequency foldback | Prevents thermal runaway during overload by reducing fSW and disabling switching - protects inductors and capacitors during short-circuit events. |
Applications
| Industrial Power Supply | GSM/GPRS Module Power |
|---|---|
|
Use Scenario: Regulating 24-V rail to 3.3-V for PLC I/O modules operating in harsh factory environments with wide temperature swings and voltage transients. IC Role / Device Role: Primary buck converter delivering 2.5-A continuous output with input UVLO, PWRGD monitoring, and thermal protection. Use Value: 60-V max input withstands 48-V surge events per IEC 61000-4-5; Eco-mode maintains >85% efficiency at 5-mA standby load. |
Use Scenario: Powering cellular modem in fleet-tracking telematics unit powered from vehicle battery (9–16 V) with cold-crank immunity. IC Role / Device Role: Input-tolerant step-down regulator enabling direct battery connection without pre-buck stage. Use Value: 3.5-V minimum VIN supports engine cranking down to 9 V; 1.3-μA shutdown current prevents battery drain during parking mode. |
| Smart Meter Auxiliary Rail | Security System Sensor Hub |
|
Use Scenario: Generating isolated 5-V and 3.3-V rails in ANSI C12.1-compliant electricity meters using transformer-derived auxiliary supply. IC Role / Device Role: Secondary-side buck regulator accepting rectified AC-derived DC input with high line rejection. Use Value: 100-kHz min fSW allows use of low-cost, high-saturation-current inductors; SS/TR pin enables synchronized startup with main MCU rail. |
Use Scenario: Powering motion sensors, door contacts, and wireless transceivers in battery-backed home security panels with multi-year shelf life. IC Role / Device Role: Low-quiescent, high-efficiency buck converter managing energy budget across sleep/active cycles. Use Value: 138-μA Eco-mode IQ minimizes self-discharge; PWRGD output triggers MCU wake-up only when VOUT is stable and within spec. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QDDARQ1 | Automotive-grade AEC-Q100 qualified; 3–65 V input; 1.5-A output; no Eco-mode; higher 260-μA IQ. | Requires external boot diode; lacks PWRGD; designed for automotive under-hood use with extended temp range (–40°C to 150°C). | Choose for automotive safety-critical systems where AEC-Q100 compliance and wider junction temp rating are mandatory. |
| MP2451DT-LF-Z | 3–36 V input; 0.6-A output; 2.2-MHz fixed fSW; 250-μA IQ; no RT/CLK sync or PWRGD. | Smaller solution size due to high fSW but limited current; no sequencing or monitoring features - suited for cost-sensitive consumer modules. | Choose for low-cost, low-current applications (<0.6 A) where board space is constrained and advanced power management is unnecessary. |
Compared with LM5164QDDARQ1 and MP2451DT-LF-Z, the TPS54260DRCR uniquely balances industrial input range (3.5–60 V), 2.5-A output, Eco-mode efficiency, and integrated PWRGD/SS/TR for robust system-level power design - making it optimal for non-automotive industrial and metering applications requiring flexibility and reliability.
Availability
TPS54260DRCR is available at Aetrix Electronics and suitable for industrial automation controllers, smart utility meters, GSM telemetry units, and security system sensor hubs requiring stable component supply across long product lifecycles.
Supply support for TPS54260DRCR 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 over 90 years of innovation in industrial, automotive, and communications markets.
The TPS54260DRCR belongs to TI's SWIFT™ family of high-voltage DC/DC converters, engineered specifically for industrial power conversion where wide input range, high efficiency at light loads, and system-level monitoring features are essential.
FAQ
What is the minimum input voltage required for TPS54260DRCR to start switching?
The TPS54260DRCR has an internal undervoltage lockout (UVLO) threshold of 2.5 V, but this can be increased using external resistors on the EN pin. When EN is floating or tied high, the device begins switching once VIN exceeds 2.5 V. Below this, the high-side MOSFET remains disabled and the TPS54260DRCR draws only 1.3 μA in shutdown mode.
Can TPS54260DRCR operate with 100% duty cycle, and what conditions enable it?
Yes, the TPS54260DRCR supports 100% duty cycle operation as long as the BOOT-to-PH voltage remains above 2.1 V. This condition is maintained by proper boot capacitor sizing (0.1 μF X7R/X5R) and adequate low-side conduction time to recharge the capacitor. Under dropout conditions, the device sustains regulation without external components - a key advantage for low-VOUT applications.
How does the Eco-mode™ function in TPS54260DRCR affect light-load efficiency?
Eco-mode™ in the TPS54260DRCR disables switching pulses when load current falls below a peak-current threshold (~5 mA typical with standard inductor), reducing gate drive and switching losses. This lowers quiescent current to 138 μA and maintains >90% efficiency at 10-mA load (VIN=12 V, VOUT=3.3 V), significantly extending runtime in always-on industrial sensors and metering devices.
What is the role of the SS/TR pin in TPS54260DRCR, and how is it configured for power sequencing?
The SS/TR pin in the TPS54260DRCR controls output voltage ramp rate during startup and enables tracking of another voltage rail. For sequencing, a resistor divider from a master rail (e.g., 5-V supply) to SS/TR forces the TPS54260DRCR output to follow that rail's rise time. This ensures controlled power-up order in multi-rail systems - preventing latch-up or back-powering of sensitive peripherals.
Does TPS54260DRCR require an external bootstrap diode, and why or why not?
No, the TPS54260DRCR integrates the bootstrap diode internally, eliminating the need for an external component. This reduces BOM count, PCB area, and potential failure points. The internal diode recharges the BOOT-to-PH capacitor during the low-side conduction phase, enabling reliable high-side gate drive across the full 3.5–60-V input range without external intervention.
TPS54260DRCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Eco-Mode™
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 60V
- Current - Output:
- 2.5A
- Frequency - Switching:
- 100kHz ~ 2.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS54260DRCR FAQ
1.How can I place an order for TPS54260DRCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54260DRCR 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 TPS54260DRCR reliable?
The price and inventory of TPS54260DRCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54260DRCR is usually 5 days.
3.What payment methods are accepted for TPS54260DRCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54260DRCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54260DRCR?
TPS54260DRCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54260DRCR 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 TPS54260DRCR?
For technical support, including TPS54260DRCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54260DRCR requirements.
6.How does Aetrix verify that TPS54260DRCR is sourced from the original manufacturer or authorized distributors?
All TPS54260DRCR 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 TPS54260DRCR meets industry standards.
7.What is the process for return or replacement of TPS54260DRCR?
All TPS54260DRCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS54260DRCR, 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 TPS54260DRCR part is unused and in its original packaging.
Return procedure for TPS54260DRCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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