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Texas Instruments TPS62261DRVR
- Part No.:
- TPS62261DRVR
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
TPS62261DRVR.pdf
- Description:
- IC REG BUCK 1.8V 600MA 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:5,985
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Product details
Overview
TPS62261DRVR from Texas Instruments is a synchronous step-down DC/DC converter optimized for battery-powered portable electronics. It delivers up to 600 mA output current from 2 V–6 V input, features fixed 1.8 V output, operates at 2.25 MHz switching frequency, and supports power save mode with dynamic voltage positioning for load transients. It targets low-noise, space-constrained applications such as smartphone baseband processors.
For engineers reviewing the TPS62261DRVR datasheet, TPS62261DRVR pinout, TPS62261DRVR application, or TPS62261DRVR equivalent, key selection criteria include its 1.8 V fixed output, WSON-6 package footprint, 15 μA quiescent current in PFM mode, 100% duty cycle capability for extended battery runtime, and MODE pin controllability between PWM and power save operation.
Technical Context
The TPS62261DRVR implements voltage-mode control with input voltage feed-forward for fast line/load regulation. Its integrated high-side (240–480 mΩ) and low-side (185–380 mΩ) MOSFETs enable synchronous rectification, while the 2.25-MHz oscillator ensures compact external component sizing.
Dynamic voltage positioning raises the regulated output by +1% in power save mode to suppress undershoot during light-to-heavy load steps. The MODE pin directly selects between automatic PFM/PWM transition (MODE = GND) and forced fixed-frequency PWM (MODE = VIN), enabling noise-sensitive system integration without layout changes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±1.5% in PWM mode - eliminates external feedback resistors and reduces BOM count. |
| Max Output Current | 600 mA at VIN ≥ 2.5 V - supports core logic rails in mobile SoCs and DSPs. |
| Input Voltage Range | 2 V to 6 V - compatible with single-cell Li-ion (2.7–4.2 V), two/three-cell alkaline, and 3.3 V/5 V rails. |
| Switching Frequency | 2.25 MHz (±12.5%) - enables use of 2.2 μH inductors and 10 μF ceramic capacitors for <1 mm solution height. |
| Quiescent Current | 15 μA (PFM mode, no load) - extends battery life in standby and low-power listening states. |
| Shutdown Current | <1 μA - meets ultra-low leakage requirements for always-on subsystems. |
| Thermal Shutdown | 140°C with 20°C hysteresis - protects against sustained overload or poor PCB thermal design. |
Pinout & Package
TPS62261DRVR is housed in a thermally enhanced 2 mm × 2 mm × 0.8 mm WSON-6 package with exposed thermal pad (Pin 6). This package supports high power density and efficient heat dissipation in portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 5) | Power input | Accepts 2–6 V supply; requires local 4.7 μF ceramic decoupling close to pin. |
| GND (Pin 6) | Ground reference | Exposed thermal pad - must be soldered to PCB ground plane for thermal and electrical integrity. |
| EN (Pin 4) | Enable control | Active-high logic; drives device into shutdown (<1 μA) when pulled low. |
| SW (Pin 1) | Switch node | Connects to inductor; carries high di/dt switching current - requires tight loop routing with ground plane. |
| FB (Pin 3) | Feedback input | Internally connected to 1.8 V divider - left unconnected for fixed-output operation. |
| MODE (Pin 2) | Operating mode select | Pull to GND for auto PFM/PWM; pull to VIN for forced PWM - enables noise filtering without firmware change. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic voltage positioning | +1% output offset in PFM mode - reduces transient undershoot by ~30 mV during 10–100 mA load steps. |
| 100% duty cycle operation | Supports VIN down to VOUT + IOUT×(RDS(on)_HS + DCR_L) - extends usable battery range to ~2.2 V for 1.8 V rail. |
| Integrated MOSFETs | High-side RDS(on) ≤ 480 mΩ, low-side ≤ 380 mΩ at 3.6 V - eliminates external FETs and gate drivers. |
| Soft-start ramp | 250 μs (5% → 95% VOUT) - limits inrush current to prevent input rail collapse on weak sources like coin cells. |
| Undervoltage lockout | 1.85 V falling threshold - prevents brownout operation and deep battery discharge below safe cutoff. |
Applications
| Mobile Phone Baseband | Portable Media Player DSP |
|---|---|
Use Scenario: Powering ARM-based application processor cores requiring stable 1.8 V at burst currents up to 450 mA during video decode. IC Role / Device Role / Timing Role: Primary point-of-load regulator with fast transient response and dynamic voltage positioning to maintain core voltage during CPU frequency scaling. Use Value: Enables 100% duty cycle operation down to 2.2 V input, extending talk time by ~12% versus non-dropout regulators. | Use Scenario: Supplying low-power audio DSP in Bluetooth headphones with intermittent 300 mA processing bursts and long idle periods. IC Role / Device Role / Timing Role: Efficient POL converter operating in PFM mode during silence, transitioning to PWM only during active audio frames. Use Value: 15 μA quiescent current in PFM mode reduces average system power by 28 μW versus fixed-frequency alternatives. |
| Smart Wearable Sensor Hub | Industrial Handheld Scanner |
Use Scenario: Regulating 1.8 V for MEMS motion sensor fusion engine with 50 mA continuous + 200 mA peak loads. IC Role / Device Role / Timing Role: Compact, thermally robust DC/DC stage placed adjacent to sensor ASIC in 12 mm² PCB area. Use Value: 2 mm × 2 mm WSON package and 67.8°C/W θJA enable full 600 mA output without heatsink in sealed enclosure. | Use Scenario: Powering barcode imaging module requiring clean 1.8 V under 4.5 V nominal input from rechargeable NiMH pack. IC Role / Device Role / Timing Role: Noise-sensitive POL regulator where MODE pin is held high to enforce fixed 2.25 MHz PWM for EMI filtering. Use Value: Fixed-frequency operation simplifies compliance with CISPR-22 Class B conducted emissions limits using single-stage LC filter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62260DRVR | Adjustable output (0.6–VIN); requires external R1/R2 feedback network; same package and pinout. | Suitable when multiple output voltages are needed across product variants or when 1.8 V is not required. | Select TPS62260DRVR only if adjustable output is mandatory; adds two resistors and layout complexity. |
| TPS62262DRVR | Fixed 1.2 V output; identical specs otherwise - same efficiency, quiescent current, and thermal performance. | Used for lower-voltage I/O rails, memory interfaces, or sub-1.8 V logic domains in multi-rail systems. | Choose TPS62262DRVR when 1.2 V is the target rail; no circuit or layout change needed beyond output capacitor re-rating. |
Compared with TPS62261DRVR, TPS62260DRVR offers flexibility at the cost of BOM and layout overhead, while TPS62262DRVR provides identical performance at a different fixed voltage - both share pin compatibility, thermal behavior, and functional modes, making them drop-in replacements for voltage-specific redesigns.
Availability
TPS62261DRVR is available at Aetrix Electronics and suitable for mobile phone baseband supplies, portable media player DSPs, and smart wearable sensor hubs requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TPS62261DRVR 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 ICs, with decades of expertise in high-efficiency DC/DC conversion.
The TPS6226x product line was designed specifically for space- and power-constrained portable electronics, delivering high efficiency across wide input ranges while maintaining ultra-low quiescent current and minimal solution footprint.
FAQ
What is the output voltage tolerance of the TPS62261DRVR in PWM mode?
The TPS62261DRVR has a feedback voltage accuracy of ±1.5% in PWM mode over temperature and line conditions. This corresponds to a 1.8 V output tolerance of ±27 mV (1.773 V to 1.827 V), verified per TI's SLVS763E datasheet Section 7.5. The TPS62261DRVR achieves this using an internal 0.6 V reference and precision trimming, ensuring reliable operation for 1.8 V logic rails.
Can the TPS62261DRVR operate with a 2.2 V input voltage?
Yes, the TPS62261DRVR supports input voltages as low as 2 V per its recommended operating conditions. At VIN = 2.2 V, it delivers up to 150 mA output current while maintaining regulation, entering 100% duty cycle mode to sustain 1.8 V output. This capability is critical for maximizing battery utilization in single-cell Li-ion systems where voltage drops below 2.5 V during discharge.
How does the MODE pin affect efficiency in light-load conditions for the TPS62261DRVR?
When the MODE pin is grounded, the TPS62261DRVR enters power save mode and switches to pulse-frequency modulation (PFM), reducing quiescent current to 15 μA and maintaining >80% efficiency at 1 mA load. With MODE tied to VIN, it remains in fixed-frequency PWM mode, increasing quiescent current to 3.8 mA and dropping efficiency to ~55% at 1 mA - a trade-off for deterministic EMI profile.
What thermal resistance values apply to the TPS62261DRVR in its WSON-6 package?
The TPS62261DRVR in DRV (WSON-6) package has a junction-to-ambient thermal resistance (RθJA) of 67.8°C/W and junction-to-board (RθJB) of 37.2°C/W, per Section 7.4 of the datasheet. These values assume standard JEDEC 2-layer board layout with 1-in² copper pour under the thermal pad. Actual thermal performance improves with additional PCB copper and vias to internal ground planes.
Is external compensation required for stability with the TPS62261DRVR?
No, the TPS62261DRVR uses an internally compensated voltage-mode control architecture optimized for 2.2 μH inductors and 10 μF ceramic output capacitors. External compensation components are unnecessary. However, a 22 pF feed-forward capacitor (C1) between FB and SW is required for optimal load transient response, as specified in Section 9.2.2.1 of the datasheet.
TPS62261DRVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA
- Frequency - Switching:
- 2.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (2x2)
TPS62261DRVR FAQ
1.How can I place an order for TPS62261DRVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62261DRVR 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 TPS62261DRVR reliable?
The price and inventory of TPS62261DRVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62261DRVR is usually 5 days.
3.What payment methods are accepted for TPS62261DRVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62261DRVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62261DRVR?
TPS62261DRVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62261DRVR 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 TPS62261DRVR?
For technical support, including TPS62261DRVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62261DRVR requirements.
6.How does Aetrix verify that TPS62261DRVR is sourced from the original manufacturer or authorized distributors?
All TPS62261DRVR 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 TPS62261DRVR meets industry standards.
7.What is the process for return or replacement of TPS62261DRVR?
All TPS62261DRVR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62261DRVR, 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 TPS62261DRVR part is unused and in its original packaging.
Return procedure for TPS62261DRVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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