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Texas Instruments TPS54260DGQR
- Part No.:
- TPS54260DGQR
- Manufacturer:
- Texas Instruments
- Package:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS54260DGQR.pdf
- Description:
- IC REG BUCK ADJ 2.5A 10HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,155
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Product details
Overview
TPS54260DGQR 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, 138-μA quiescent current, and adjustable 100-kHz to 2.5-MHz switching frequency. It delivers regulated 3.3-V output in industrial power supplies requiring wide VIN tolerance and robust thermal performance.
For engineers reviewing the TPS54260DGQR datasheet, TPS54260DGQR pinout, TPS54260DGQR application, or TPS54260DGQR equivalent, key selection criteria include input voltage range (3.5–60 V), output current capability (2.5 A), Eco-mode operation, PWRGD open-drain power-good signaling, and RT/CLK synchronization support - all critical for 12-V/24-V/48-V embedded systems with strict no-load efficiency and sequencing requirements.
Technical Context
The TPS54260DGQR implements constant-frequency peak current-mode control with internal slope compensation to prevent subharmonic oscillation across 0–100% duty cycle. Its error amplifier drives COMP with transconductance of 310 μS (normal) and 70 μS (slow-start), enabling stable loop compensation using external RC networks on COMP and VSENSE.
It integrates boot UVLO monitoring (2.1 V threshold), frequency foldback during overload, thermal shutdown at 182°C, and an open-drain PWRGD comparator asserting low when VSENSE falls below 92% or rises above 109% of nominal - with deassertion window between 94% and 107% for clean system power sequencing.
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 rails without pre-regulation |
| Output Current | 2.5 A continuous - sufficient for powering microcontrollers, sensors, and communication ICs in industrial nodes |
| Switching Frequency | 100 kHz to 2.5 MHz - adjustable via RT resistor or external clock on RT/CLK pin for EMI optimization and size/efficiency trade-off |
| Quiescent Current | 138 μA in Eco-mode - enables >90% efficiency at 10-mA load (VIN=12 V, VOUT=3.3 V) |
| Reference Voltage | 0.8 V ±1% - sets output voltage via external resistor divider on VSENSE, enabling precise 3.3-V, 5-V, or custom regulation |
| Power-Good Threshold | 94–107% of VREF - provides reliable system reset and sequencing control with hysteresis for noise immunity |
| Shutdown Current | 1.3 μA - allows ultra-low-power standby in battery-backed or energy-harvesting applications |
| High-Side RDS(on) | 200 mΩ @ VIN=12 V - minimizes conduction loss and thermal rise at full load in compact layouts |
Pinout & Package
TPS54260DGQR is housed in a thermally enhanced 10-pin HVSSOP (DGQ) package measuring 3.0 mm × 3.0 mm with exposed thermal pad tied to GND. The package supports high-power density designs with RθJA = 62.5°C/W (standard board) and RθJB = 28°C/W for PCB-level heat dissipation.
| 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 high-side MOSFET |
| VIN | Main input supply | Accepts 3.5–60 V; powers internal circuitry and high-side switch; requires local bulk and ceramic input capacitance |
| GND | Power and signal reference | Common return for all circuits; thermal pad must be soldered to PCB GND plane for thermal and electrical integrity |
| EN | Enable / UVLO control | Pull below 1.2 V to disable; float or tie to VIN for enable; used with resistor divider to raise UVLO threshold |
| VSENSE | Feedback input | Inverting input of error amplifier; monitors output via resistor divider; sets regulation point relative to 0.8-V reference |
| COMP | Error amplifier output | Drives PWM comparator; connects to RC compensation network for loop stability and transient response tuning |
| RT/CLK | Frequency control | Resistor-to-ground sets fSW; externally driven clock synchronizes switching to system timing source |
| SS/TR | Soft-start & tracking | Capacitor sets output ramp time; supports power sequencing and voltage tracking with external bias networks |
| PWRGD | Open-drain power-good | Asserts low if VOUT deviates beyond ±6% of target; requires external pull-up for MCU/system reset signaling |
| PH | Power switch node | Source of internal high-side MOSFET; connects to inductor and output filter; carries high di/dt switching current |
Key Features
| Feature | Design Value |
|---|---|
| Eco-mode™ pulse skipping | Maintains >85% efficiency at 1-mA load by disabling switching until output droop triggers reactivation - critical for always-on IoT nodes |
| Integrated boot diode | Eliminates external bootstrap diode, reducing BOM count and layout area while ensuring reliable gate drive refresh during low-duty-cycle operation |
| Adjustable UVLO with hysteresis | EN pin allows user-defined input undervoltage lockout (e.g., 15 V start, 12 V release) using two resistors - prevents brownout instability in fluctuating industrial rails |
| Synchronization capability | RT/CLK pin accepts external clock (300–2200 kHz) to align switching edges with other converters - essential for EMI reduction in multi-rail systems |
| Overvoltage protection | PWRGD OV comparator disables high-side MOSFET when VOUT exceeds 109% of setpoint and holds off until VOUT drops below 107% - protects downstream loads from fault-induced overvoltage |
| Thermal shutdown with auto-recovery | Shuts down at 182°C junction temperature and restarts after cooldown; SS/TR discharge ensures consistent soft-start post-fault |
Applications
| Industrial Power Supply | GSM/GPRS Module Power |
|---|---|
Use Scenario: Regulating 24-V factory bus to 3.3-V for PLC I/O modules operating in ambient temperatures up to 85°C. IC Role / Device Role / Timing Role: Primary buck regulator delivering 2.5-A continuous output with Eco-mode maintaining low self-heating during idle periods. Use Value: 200-mΩ RDS(on) and 28°C/W RθJB enable full-load operation without heatsink; PWRGD signals MCU when output drifts beyond ±6%. | Use Scenario: Powering cellular modem in fleet telematics unit powered from vehicle battery (9–16 V) with cold-crank immunity. IC Role / Device Role / Timing Role: Input-tolerant step-down controller supporting wide VIN range and providing clean 3.3-V rail with slow-start to limit inrush into modem's capacitive load. Use Value: 3.5-V UVLO threshold and SS/TR pin allow controlled ramp-up during battery recovery; 1.3-μA shutdown current extends backup runtime. |
| Energy Meter Auxiliary Supply | Security System Sensor Hub |
Use Scenario: Deriving isolated 5-V auxiliary supply from 48-V PoE-powered smart meter backplane. IC Role / Device Role / Timing Role: High-input-voltage buck converter operating at 500 kHz to minimize magnetics size while meeting EN55022 Class B conducted EMI limits. Use Value: Adjustable fSW via RT resistor enables EMI peak shifting; 100-kHz minimum frequency ensures compatibility with low-cost inductors. | Use Scenario: Powering motion sensors, door contacts, and Zigbee radio in battery-plus-solar security panel with seasonal load variation. IC Role / Device Role / Timing Role: Always-on regulator using Eco-mode to sustain >1-year battery life at average 200-μA system load. Use Value: 138-μA quiescent current and 1.3-μA shutdown mode minimize parasitic drain; PWRGD enables wake-on-event detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QPWPRQ1 | Automotive-grade (AEC-Q100), 3-V to 65-V input, 1.5-A output, 1.5-μA shutdown current, no integrated boot diode | Requires external bootstrap diode; rated for automotive temperature range (–40°C to 125°C); lacks PWRGD pin | Choose for automotive deployments needing qualification; avoid if PWRGD sequencing or footprint compatibility is required |
| TPS54360DGQR | Same family, 3.5–60-V input, but 3.5-A output; identical pinout, package, and feature set except higher current rating and 140-mΩ RDS(on) | Direct drop-in replacement where higher output current headroom is needed; shares same layout and compensation design | Use when 2.5-A margin is insufficient; verify inductor saturation current and thermal margin for 3.5-A operation |
Compared with LM5164QPWPRQ1, TPS54260DGQR offers integrated boot diode and PWRGD for simplified industrial designs, while TPS54360DGQR provides higher current capacity with identical footprint - making both viable alternatives depending on whether automotive qualification or output headroom is prioritized.
Availability
TPS54260DGQR is available at Aetrix Electronics and suitable for industrial automation, telecom infrastructure, and energy metering applications requiring stable component supply, long-term manufacturability, and guaranteed traceability.
Supply support for TPS54260DGQR 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 DC/DC conversion.
The TPS54260DGQR belongs to TI's SWIFT™ family of high-input-voltage buck regulators, designed specifically for industrial, automotive, and communications systems demanding wide VIN range, integrated FETs, and robust protection features.
FAQ
What is the maximum recommended input voltage for the TPS54260DGQR?
The absolute maximum input voltage for the TPS54260DGQR is 65 V, but the recommended operating range is 3.5 V to 60 V per the datasheet. Sustained operation above 60 V risks exceeding safe SOA limits and may trigger overvoltage protection or reduce reliability. For 48-V systems with surge tolerance, ensure transient clamping keeps VIN within 60 V under all conditions. The TPS54260DGQR is rated for continuous 60-V operation with proper thermal design.
Does the TPS54260DGQR require an external bootstrap diode?
No, the TPS54260DGQR integrates a boot recharge diode, eliminating the need for an external component. A 0.1-μF X7R/X5R ceramic capacitor must still be placed between BOOT and PH pins to provide gate drive voltage for the internal high-side MOSFET. This integration reduces BOM count, PCB area, and potential failure points - a key differentiator versus discrete-controller solutions. The TPS54260DGQR's internal boot diode is validated across temperature and load conditions per TI's characterization data.
How does Eco-mode™ operate in the TPS54260DGQR?
Eco-mode™ in the TPS54260DGQR activates automatically at light loads when peak switch current falls below ~500 mV on the COMP pin, causing the device to skip switching cycles while maintaining output regulation. During Eco-mode, quiescent current drops to 138 μA, significantly improving efficiency below 10 mA. The TPS54260DGQR exits Eco-mode synchronously with the next RT/CLK edge or internal oscillator cycle once output droop raises COMP above the threshold. This behavior is confirmed in Figure 14 and Section 7.3.3 of the official datasheet.
Can the TPS54260DGQR synchronize to an external clock?
Yes, the TPS54260DGQR supports external clock synchronization via the RT/CLK pin. When driven with a TTL/CMOS-compatible clock signal (300–2200 kHz), the internal PLL locks to the falling edge, aligning PH switching transitions. This feature is explicitly documented in Pin Functions (Section 5) and Electrical Characteristics (Section 6.5). The TPS54260DGQR maintains synchronization even during light-load Eco-mode operation, enabling deterministic EMI management in multi-converter systems.
What is the purpose of the SS/TR pin on the TPS54260DGQR?
The SS/TR (Slow-Start / Tracking) pin on the TPS54260DGQR controls output voltage ramp rate during startup and enables voltage tracking for multi-rail sequencing. Connecting a capacitor to SS/TR sets soft-start time; applying an external voltage allows one supply to track another. During faults, the TPS54260DGQR actively discharges SS/TR to ensure repeatable restart behavior - a detail verified in Section 7.3.5 and Figure 29 of the datasheet. This dual-function pin simplifies power sequencing in complex embedded systems without additional ICs.
TPS54260DGQR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Eco-Mode™
- Package/Case:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- 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-HVSSOP
TPS54260DGQR FAQ
1.How can I place an order for TPS54260DGQR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54260DGQR 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 TPS54260DGQR reliable?
The price and inventory of TPS54260DGQR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54260DGQR is usually 5 days.
3.What payment methods are accepted for TPS54260DGQR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54260DGQR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54260DGQR?
TPS54260DGQR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54260DGQR 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 TPS54260DGQR?
For technical support, including TPS54260DGQR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54260DGQR requirements.
6.How does Aetrix verify that TPS54260DGQR is sourced from the original manufacturer or authorized distributors?
All TPS54260DGQR 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 TPS54260DGQR meets industry standards.
7.What is the process for return or replacement of TPS54260DGQR?
All TPS54260DGQR units undergo pre-shipment inspection (PSI). If there is an issue with TPS54260DGQR, 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 TPS54260DGQR part is unused and in its original packaging.
Return procedure for TPS54260DGQR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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