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Texas Instruments TPS62061DSGR
- Part No.:
- TPS62061DSGR
- Manufacturer:
- Texas Instruments
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
TPS62061DSGR.pdf
- Description:
- IC REG BUCK 1.8V 1.6A 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,938
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Product details
Overview
TPS62061DSGR from Texas Instruments is a fixed-output 1.8-V, 1.6-A synchronous step-down DC-DC converter with 3-MHz switching frequency, operating from 2.7 V to 6 V input and delivering up to 97% efficiency in PWM mode for portable power rails in notebooks and media players.
For engineers reviewing the TPS62061DSGR datasheet, TPS62061DSGR pinout, TPS62061DSGR application, or TPS62061DSGR equivalent, key selection considerations include its fixed 1.8-V output, WSON-8 package with PowerPAD™ thermal enhancement, auto PFM/PWM mode transition, internal discharge function, and ±1.5% output voltage accuracy in PWM mode.
Technical Context
The TPS62061DSGR implements a voltage-mode control architecture with input voltage feed-forward for fast line/load regulation and uses integrated high-side and low-side MOSFETs (RDS(on) = 120–180 mΩ / 90–130 mΩ at 3.6 V) to enable compact 1-µH inductor + 10-µF ceramic capacitor designs.
It supports dual operational modes: forced 3-MHz PWM (via MODE pin high) for low-noise applications, and automatic PFM/PWM transition (MODE pin low) with dynamic voltage positioning (1% overregulation) and 18-µA quiescent current to sustain high light-load efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±1.5% in PWM mode - eliminates external feedback resistors and simplifies layout for stable POL rail generation. |
| Max Output Current | 1.6 A continuous - supports core logic and I/O rails in portable SoC applications without external current boosting. |
| Input Voltage Range | 2.7 V to 6 V - compatible with single-cell Li-ion (2.7–4.2 V), 3.3-V, and 5-V system supplies. |
| Switching Frequency | 3 MHz (±13%) - enables use of tiny 1-µH inductors and 10-µF 0603 capacitors for <10-mm² solution size. |
| Quiescent Current | 18 µA typical in PFM mode - extends battery runtime in always-on subsystems like audio codecs or sensors. |
| Efficiency Peak | Up to 97% at 1.8 V/1 A, VIN = 4.2 V - minimizes thermal rise in space-constrained handheld enclosures. |
| Shutdown Current | <1 µA - ensures negligible battery drain during deep sleep or system off states. |
| Thermal Resistance | RθJA = 64.7 °C/W (WSON-8) - supports >1.3 W power dissipation at 25°C ambient with standard PCB copper. |
Pinout & Package
TPS62061DSGR is housed in an 8-pin WSON (DSG) package measuring 2.0 mm × 2.0 mm × 0.75 mm with exposed PowerPAD™ thermal pad on bottom for enhanced heat transfer to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND | Power Ground | Low-impedance return path for high-current switch node; must be connected directly to PowerPAD™ and local ground pour. |
| PVIN | Power Input | High-current VIN supply for power stage; requires local 10-µF ceramic capacitor placed adjacent to pin. |
| SW | Switch Node | Connection point between internal high-/low-side MOSFETs; drives external 1-µH inductor with minimal trace length. |
| AGND | Analog Ground | Reference ground for control circuitry; isolated from PGND at package level but tied together on PCB. |
| AVIN | Analog Input | Filtered analog supply for error amplifier and reference; must be connected to PVIN and input capacitor. |
| EN | Enable Control | Active-high logic input; pulling low disables device and activates internal SW-to-PGND discharge resistor (~140 Ω). |
| MODE | Operation Mode | Logic-selectable: low = auto PFM/PWM, high = forced 3-MHz PWM - used for noise-sensitive RF or audio sections. |
| FB | Feedback Input | Internally connected to 1.8-V output; no external divider required - simplifies BOM and improves regulation stability. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Voltage Positioning | Maintains output at 1.82 V (1% over nominal) in PFM mode to absorb sudden load steps without undershoot. |
| 100% Duty Cycle Operation | Enables dropout as low as ~100 mV at full load, extending usable battery range down to 1.9 V input. |
| Internal Output Discharge | Activates 75–1450 Ω internal resistor between SW and PGND during shutdown - eliminates need for external bleed circuit. |
| Undervoltage Lockout | Turns off converter below 1.78 V (falling) and re-enables above 1.95 V (rising) - prevents brownout operation and battery over-discharge. |
| Clock Dithering | ±6 ns frequency modulation reduces EMI peak emissions at 3-MHz fundamental and harmonics for FCC/CE compliance. |
| Soft Start | Ramps output to 95% of 1.8 V within 500 µs while limiting inrush current - avoids input rail collapse on weak sources. |
Applications
| Point-of-Load Regulation | Notebook Core Voltage |
|---|---|
Use Scenario: Providing clean, regulated 1.8-V supply to FPGA I/O banks or ASIC interface logic in compact embedded systems. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering precise 1.8-V rail with fast transient response and minimal board area. Use Value: Enables use of 1-µH inductor and 10-µF 0603 capacitors - achieves full regulation in <10 mm² footprint with no external compensation. | Use Scenario: Powering DDR memory termination or USB PHY circuits in ultraportable notebooks with single-cell Li-ion battery. IC Role / Device Role / Timing Role: Fixed-output DC-DC converter supporting dynamic voltage scaling and seamless mode transitions during CPU sleep/wake cycles. Use Value: 18-µA quiescent current and auto PFM/PWM mode extend battery life by >15% versus fixed-frequency-only alternatives at light loads. |
| Portable Media Player Supply | DSP Core Power |
Use Scenario: Generating stable 1.8-V rail for audio codec and touch controller in battery-powered MP3 players. IC Role / Device Role / Timing Role: High-efficiency step-down converter with internal discharge function ensuring safe power-down sequencing. Use Value: Internal SW-to-PGND discharge resistor eliminates need for external FET and timing circuit - reduces BOM count and layout complexity. | Use Scenario: Supplying real-time DSP cores requiring tight voltage tolerance and low noise in voice-enabled wearables. IC Role / Device Role / Timing Role: Low-EMI buck regulator operating in forced PWM mode (MODE = high) to suppress switching noise near sensitive analog front-ends. Use Value: Clock dithering lowers 9-MHz harmonic amplitude by >10 dB, easing EMC filter design and passing Class B radiated emissions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62060DSGR | Adjustable output (0.8–VIN) via external FB divider; same 1.6-A rating, package, and features. | Requires two external resistors and feed-forward capacitor; suited for multi-rail designs needing flexibility. | Select when variable output voltage or future design reuse across multiple VOUT points is required. |
| TPS62063DSGR | Fixed 3.3-V output; identical pinout, thermal performance, and functional modes. | Not suitable for 1.8-V logic rails; intended for 3.3-V peripherals, USB, or analog subsystems. | Choose only if target application requires 3.3-V output - not a drop-in replacement for TPS62061DSGR. |
Compared with TPS62060DSGR, the TPS62061DSGR saves two resistors and layout area by fixing VOUT at 1.8 V, while TPS62063DSGR serves entirely different voltage domains - neither offers pin-compatible substitution without schematic revision.
Availability
TPS62061DSGR is available at Aetrix Electronics and suitable for portable media players, notebook I/O rails, and DSP core supplies requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62061DSGR 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 TPS6206x family was designed specifically for space-constrained, battery-powered applications demanding ultra-small footprint, high light-load efficiency, and robust transient performance - targeting portable computing and consumer electronics.
FAQ
What is the output voltage tolerance of the TPS62061DSGR in PWM mode?
The TPS62061DSGR guarantees ±1.5% output voltage accuracy in PWM mode across temperature, line, and load conditions. This specification is verified per TI's SLVSA95B datasheet Section 7.5, where VFB(PWM) is defined as –1.5% to +1.5% deviation from nominal 1.8 V. The TPS62061DSGR achieves this using a precision 0.6-V internal reference and trimmed feedback network, eliminating external resistor tolerance errors.
Does the TPS62061DSGR require external feedback resistors?
No, the TPS62061DSGR does not require external feedback resistors because it integrates the 1.8-V feedback network internally. Unlike the adjustable TPS62060DSGR, the TPS62061DSGR connects the FB pin directly to the output capacitor, removing two components and associated placement/layout constraints. This simplification is confirmed in the "Device Comparison Table" (Section 5) and "Typical Application Schematic" (Figure 8) of the TPS62061DSGR datasheet.
How does the TPS62061DSGR manage thermal performance in its WSON package?
The TPS62061DSGR uses an 8-pin WSON (DSG) package with an exposed PowerPAD™ thermal pad that must be soldered to a PCB copper pour for effective heat dissipation. Its junction-to-ambient thermal resistance (RθJA) is 64.7 °C/W under JEDEC JESD51-7 4-layer board conditions. At 1.6-A load and 4.2-V input, typical power dissipation is ~350 mW, resulting in ~22°C junction-to-ambient rise - well within the –40°C to 125°C operating range.
Can the TPS62061DSGR operate with input voltage below 2.7 V?
The TPS62061DSGR is not specified to operate reliably below 2.7 V input. Its undervoltage lockout (UVLO) turns off the device when input falls to 1.78 V (typical), and recommended minimum operating voltage is 2.7 V per Section 7.3. While 100% duty cycle operation allows conduction down to ~1.9 V, regulation, efficiency, and transient response are not characterized or guaranteed below 2.7 V - using lower input risks instability or premature shutdown.
What happens to the output capacitor when the TPS62061DSGR is disabled?
When the TPS62061DSGR is disabled via the EN pin (pulled low), it enters shutdown mode and activates an internal discharge path between the SW pin and PGND. This path uses a 75–1450 Ω resistor (typical 140 Ω) to safely bleed the output capacitor to near-zero volts within milliseconds. This feature eliminates the need for external discharge circuitry and ensures controlled power-down sequencing in multi-rail systems using the TPS62061DSGR.
TPS62061DSGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WFDFN 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):
- 2.7V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 1.6A
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (2x2)
TPS62061DSGR FAQ
1.How can I place an order for TPS62061DSGR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62061DSGR 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 TPS62061DSGR reliable?
The price and inventory of TPS62061DSGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62061DSGR is usually 5 days.
3.What payment methods are accepted for TPS62061DSGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62061DSGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62061DSGR?
TPS62061DSGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62061DSGR 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 TPS62061DSGR?
For technical support, including TPS62061DSGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62061DSGR requirements.
6.How does Aetrix verify that TPS62061DSGR is sourced from the original manufacturer or authorized distributors?
All TPS62061DSGR 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 TPS62061DSGR meets industry standards.
7.What is the process for return or replacement of TPS62061DSGR?
All TPS62061DSGR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62061DSGR, 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 TPS62061DSGR part is unused and in its original packaging.
Return procedure for TPS62061DSGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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