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Texas Instruments TPS62291DRVT
- Part No.:
- TPS62291DRVT
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
TPS62291DRVT.pdf
- Description:
- IC REG BUCK 3.3V 1A 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,682
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Product details
Overview
TPS62291DRVT from Texas Instruments is a 3.3 V fixed-output, 1-A synchronous step-down DC/DC converter optimized for Li-ion battery-powered portable electronics. It operates from 2.3 V to 6.0 V input, delivers up to 1000 mA output current, achieves up to 96% efficiency at 2.25 MHz fixed switching frequency, and features power save mode with dynamic voltage positioning for load transient robustness - deployed in mobile phones and wireless LAN modules.
For engineers reviewing the TPS62291DRVT datasheet, TPS62291DRVT pinout, TPS62291DRVT application, or TPS62291DRVT equivalent, key selection considerations include its 3.3 V fixed output, 2.25-MHz PWM operation, MODE-pin-controllable PFM/PWM transition, 15-μA quiescent current in light-load PFM mode, and 2 mm × 2 mm WSON-6 (DRV) package compatibility with space-constrained PCB layouts.
Technical Context
The TPS62291DRVT employs a fast-response voltage-mode control architecture with input voltage feed-forward, enabling stable regulation using small ceramic capacitors. Its internal 0.6 V reference and fixed resistor divider set the 3.3 V output without external feedback components.
It integrates high-side and low-side MOSFETs with typical RDS(on) of 240 mΩ and 185 mΩ, supports 100% duty-cycle operation for ultra-low dropout, and uses a dedicated MODE pin to force fixed-frequency PWM (for noise-sensitive systems) or enable automatic PFM/PWM transition (for peak efficiency across load range).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±1.5% in PWM mode - eliminates need for external feedback resistors and simplifies BOM. |
| Input Voltage Range | 2.3 V to 6.0 V - supports single-cell Li-ion batteries across full discharge curve including extended-voltage variants. |
| Max Output Current | 1000 mA - sufficient for powering baseband processors, RF transceivers, and memory subsystems in handheld devices. |
| Switching Frequency | 2.25 MHz (±12.5%) - enables use of compact 2.2 μH inductors and 10 μF ceramic output capacitors for minimal solution footprint. |
| Quiescent Current | 15 μA in PFM mode - extends battery runtime during standby or light-load states such as idle modem operation. |
| Efficiency Peak | Up to 96% at mid-load - reduces thermal dissipation in sealed enclosures and improves power conversion integrity. |
| Shutdown Current | <1 μA - ensures near-zero battery drain when system is fully powered down via EN pin assertion. |
Pinout & Package
TPS62291DRVT is housed in a thermally enhanced 2.0 mm × 2.0 mm × 0.8 mm WSON-6 (DRV) package with an exposed thermal pad soldered to PCB ground for efficient heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 2.3–6.0 V supply; requires local 10-μF ceramic decoupling capacitor to suppress high-frequency switching noise. |
| GND | Ground reference | Primary return path for power and signal circuits; must be connected to exposed thermal pad for thermal and electrical integrity. |
| EN | Enable control | Active-high logic input; pulling low disables converter and reduces VIN current to <1 μA - used for power sequencing and system sleep control. |
| FB | Feedback node | Internally tied to fixed 3.3 V divider; no external resistors required - simplifies layout and eliminates feedback tuning errors. |
| SW | Switch node | Drives external 2.2 μH inductor; carries high di/dt square wave - requires tight loop routing and Kelvin connection to minimize EMI. |
| MODE | Operating mode select | Low = auto PFM/PWM transition for max efficiency; high = forced 2.25 MHz PWM for predictable EMI filtering - dynamically configurable in-system. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic voltage positioning | Maintains +1% output offset in PFM mode to absorb load-step undershoot - eliminates need for oversized output capacitance in burst-mode applications. |
| 100% duty-cycle operation | Enables regulation down to VIN ≈ VOUT, extending usable battery life by extracting energy down to ~3.4 V for 3.3 V rail. |
| Integrated MOSFETs | 240 mΩ high-side and 185 mΩ low-side RDS(on) - eliminates external FETs and gate drivers, reducing component count and layout complexity. |
| Soft-start ramp | 250 μs VOUT rise time (5% → 95%) - prevents inrush current spikes that could collapse weak battery or shared supply rails. |
| Thermal shutdown | 140°C trip with 20°C hysteresis - protects silicon under sustained overload or poor heatsinking without requiring external monitoring circuitry. |
Applications
| Mobile Phone Power Rail | Wireless LAN Module Supply |
|---|---|
Use Scenario: Powers application processor I/O and RF front-end bias in dual-SIM smartphones with aggressive battery life targets. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering clean, regulated 3.3 V from single Li-ion cell. Use Value: 96% peak efficiency and 15-μA quiescent current directly extend talk time and standby duration without thermal throttling. |
Use Scenario: Supplies 3.3 V to IEEE 802.11a/b/g/n WLAN chipsets during high-throughput data transmission bursts. IC Role / Device Role / Timing Role: Fast-transient capable buck converter supporting dynamic power scaling between TX/RX/idle states. Use Value: Dynamic voltage positioning + 2.25 MHz switching minimizes output droop during 100 mA → 800 mA load steps within <10 μs. |
| Portable Media Player Core Logic | Point-of-Load (POL) for DSP |
Use Scenario: Provides stable 3.3 V to audio codec, display interface, and NAND flash controller in MP3/MP4 players. IC Role / Device Role / Timing Role: Compact, low-noise DC/DC source replacing linear regulators to eliminate thermal hotspots on thin PCBs. Use Value: 2 mm × 2 mm DRV package and ceramic-only external components enable <8 mm² total solution area - critical for slim form factors. |
Use Scenario: Delivers tightly regulated 3.3 V to low-power DSPs in industrial handheld test equipment with strict EMI limits. IC Role / Device Role / Timing Role: Noise-controlled POL converter where MODE pin is held high to enforce fixed 2.25 MHz PWM for deterministic EMI filtering. Use Value: Forced PWM mode eliminates variable-frequency PFM noise, allowing simple LC filter design meeting CISPR-22 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 |
|---|---|---|---|
| TPS62260DRVR | 3.3 V fixed, 600 mA max output, 2.25 MHz, same DRV package but lower current rating and higher RDS(on) (320/250 mΩ). | Suitable only for sub-600 mA loads; cannot replace TPS62291DRVT in 1-A applications without derating or redesign. | Select when cost sensitivity outweighs current headroom and thermal margin requirements. |
| TPS62822DDCR | 3.3 V fixed, 2-A output, 2.25 MHz, 1.5 mm × 2.0 mm DFN-8 package, 12 μA IQ, integrated soft-start. | Higher current capability and smaller footprint but requires different PCB layout and has distinct enable timing behavior. | Choose for next-generation designs needing >1 A headroom or tighter board area constraints - not drop-in compatible. |
Compared with TPS62291DRVT, TPS62260DRVR offers lower cost and identical pinout but insufficient current for full-load scenarios, while TPS62822DDCR provides scalable headroom and modern efficiency at the expense of layout rework and revised sequencing validation.
Availability
TPS62291DRVT is available at Aetrix Electronics and suitable for mobile phone power management, wireless LAN module supply, and portable media player core logic requiring stable component supply across long production lifecycles.
Supply support for TPS62291DRVT 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 company specializing in analog and embedded processing technologies, with leadership in power management ICs for portable and industrial applications.
The TPS6229x product line was designed specifically for high-efficiency, space-constrained battery-powered devices - emphasizing ultra-small footprint, wide input range, and intelligent light-load efficiency modes.
FAQ
What is the output voltage tolerance of the TPS62291DRVT in PWM mode?
The TPS62291DRVT specifies ±1.5% output voltage accuracy in PWM mode over temperature and line/load conditions. This tolerance is guaranteed by internal trimming of the 0.6 V reference and fixed resistor network, eliminating variability from external feedback components. The TPS62291DRVT maintains this accuracy across its full 2.3 V to 6.0 V input range and 0–1000 mA load range, making it suitable for noise-sensitive digital I/O rails where voltage stability is critical.
Does the TPS62291DRVT require external feedback resistors?
No, the TPS62291DRVT does not require external feedback resistors because it is a fixed 3.3 V output variant with an internally trimmed resistor divider connected to the FB pin. Unlike the adjustable TPS62290DRV, the TPS62291DRVT's FB pin is internally routed and must be left unconnected or tied directly to the output capacitor per datasheet guidance. This eliminates resistor matching errors, layout sensitivity, and BOM overhead - a key advantage of the TPS62291DRVT in high-volume portable designs.
How does the MODE pin affect efficiency and noise performance of the TPS62291DRVT?
When the MODE pin of the TPS62291DRVT is pulled low (GND), the device enters power save mode and automatically transitions between PFM and PWM based on load - achieving up to 96% peak efficiency and 15 μA quiescent current at light loads. When MODE is pulled high (VIN), it forces continuous 2.25 MHz PWM operation, which sacrifices light-load efficiency (e.g., ~75% at 1 mA) but delivers deterministic, filterable switching noise - essential for RF coexistence in wireless LAN or cellular modules using the TPS62291DRVT.
What thermal management provisions exist for the TPS62291DRVT in its DRV package?
The TPS62291DRVT in the 2 mm × 2 mm WSON-6 (DRV) package incorporates an exposed thermal pad that must be soldered to a PCB copper pour connected to GND. With this implementation, its junction-to-board thermal resistance (RθJB) is 37.2°C/W, enabling reliable operation at 1000 mA continuous load up to +85°C ambient. The device also includes thermal shutdown at 140°C (with 20°C hysteresis), ensuring self-protection during transient overloads or inadequate heatsinking - a built-in safeguard confirmed in all TPS62291DRVT production lots.
Can the TPS62291DRVT operate with input voltages below 2.3 V?
No, the TPS62291DRVT has a specified minimum input voltage of 2.3 V per its Recommended Operating Conditions. Below this threshold, undervoltage lockout (UVLO) activates at ~1.85 V (falling), disabling the output stage to prevent erratic regulation or excessive battery discharge. While 100% duty-cycle operation allows regulation down to VIN ≈ VOUT (i.e., ~3.3 V), the TPS62291DRVT will not start or sustain regulation if VIN drops below 2.3 V - a hard limit enforced by internal UVLO circuitry and validated across –40°C to +85°C operating range.
TPS62291DRVT 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):
- 2.3V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A
- 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)
TPS62291DRVT FAQ
1.How can I place an order for TPS62291DRVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62291DRVT 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 TPS62291DRVT reliable?
The price and inventory of TPS62291DRVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62291DRVT is usually 5 days.
3.What payment methods are accepted for TPS62291DRVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62291DRVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62291DRVT?
TPS62291DRVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62291DRVT 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 TPS62291DRVT?
For technical support, including TPS62291DRVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62291DRVT requirements.
6.How does Aetrix verify that TPS62291DRVT is sourced from the original manufacturer or authorized distributors?
All TPS62291DRVT 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 TPS62291DRVT meets industry standards.
7.What is the process for return or replacement of TPS62291DRVT?
All TPS62291DRVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62291DRVT, 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 TPS62291DRVT part is unused and in its original packaging.
Return procedure for TPS62291DRVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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