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Texas Instruments TPS62291DRVR
- Part No.:
- TPS62291DRVR
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
TPS62291DRVR.pdf
- Description:
- IC REG BUCK 3.3V 1A 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:18,222
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Product details
Overview
TPS62291DRVR from Texas Instruments is a synchronous step-down DC/DC converter optimized for Li-ion battery-powered portable applications. It delivers up to 1000 mA output current with fixed 3.3 V output, operates from 2.3 V to 6.0 V input, achieves up to 96% efficiency at 2.25 MHz switching frequency, and features power save mode for light-load operation - used in mobile phones and wireless LAN modules.
For engineers reviewing the TPS62291DRVR datasheet, TPS62291DRVR pinout, TPS62291DRVR application, or TPS62291DRVR equivalent, key selection considerations include its 3.3 V fixed output, 2-mm × 2-mm WSON-6 (DRV) package, MODE pin-controlled PWM/PSM transition, 15 μA quiescent current in PFM mode, and 100% duty-cycle low-dropout capability for extended battery runtime.
Technical Context
The TPS62291DRVR employs a voltage-mode control architecture with input voltage feed-forward, enabling fast line and load transient response using small ceramic capacitors. Its internal 0.6 V reference feeds a precision feedback loop, and dynamic voltage positioning raises output by +1% in power save mode to minimize load-step undershoot.
It integrates high-side and low-side MOSFETs with typical RDS(on) of 240 mΩ and 185 mΩ respectively, supports automatic PFM-to-PWM transition based on inductor current zero-crossing, and includes undervoltage lockout (1.85 V falling threshold), thermal shutdown (140°C), and short-circuit protection via dual current limit comparators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±1.5% in PWM mode - eliminates external resistor divider and simplifies layout for stable POL supply. |
| Input Voltage Range | 2.3 V to 6.0 V - supports single-cell Li-ion (including depleted state) and extended-voltage batteries without external regulation. |
| Max Output Current | 1000 mA - sufficient for 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 capacitors for minimal solution footprint. |
| Quiescent Current | 15 μA in PFM mode - extends battery life during standby or low-activity states in portable electronics. |
| Efficiency Peak | Up to 96% - achieved at mid-load with 3.6 V input and 3.3 V output, reducing thermal load in space-constrained designs. |
| Shutdown Current | <1 μA - ensures near-zero battery drain when system is powered off via EN pin assertion. |
Pinout & Package
TPS62291DRVR is housed in a 2.0 mm × 2.0 mm × 0.8 mm WSON-6 (DRV) package with an exposed thermal pad soldered to PCB ground for enhanced thermal performance (RθJB = 37.2°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 2.3–6.0 V; requires local 10 μF ceramic decoupling capacitor to suppress high-frequency noise and support peak current delivery. |
| GND | Ground reference | Primary power return path; must be connected to exposed thermal pad for optimal thermal and electrical performance. |
| EN | Enable control | Active-high logic input; pulling low disables converter and reduces current draw to <1 μA - used for power sequencing and system sleep control. |
| FB | Feedback node | Internally connected to fixed 3.3 V divider; externally tied to output capacitor - no external resistors required for this variant. |
| SW | Switch node | Drives external 2.2 μH inductor; carries high di/dt switching current - requires tight layout with minimal trace length and solid ground plane. |
| MODE | Operating mode select | Low = automatic PFM/PWM transition for efficiency; high = forced fixed-frequency PWM for EMI-sensitive applications like RF sections. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Voltage Positioning | Maintains +1% output offset in PFM mode to absorb sudden load steps without undershoot - critical for processor core rail stability during burst activity. |
| 100% Duty-Cycle Operation | Enables regulation down to VIN ≈ VOUT, extracting maximum energy from aging or deeply discharged Li-ion cells (e.g., down to ~3.4 V for 3.3 V output). |
| Integrated Power MOSFETs | High-side RDS(on) = 240 mΩ and low-side RDS(on) = 185 mΩ at 3.6 V - eliminates external FETs and gate drivers, reducing BOM count and board area. |
| Soft-Start Ramp | 250 μs VOUT rise time (5% → 95%) - limits inrush current to prevent input rail collapse during power-up from weak sources like coin-cell or USB ports. |
| Thermal Shutdown Protection | Triggers at 140°C junction temperature with 20°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking conditions. |
Applications
| Mobile Phone Core Supply | Wireless LAN Baseband |
|---|---|
Use Scenario: Powers application processor I/O and memory interface rails in slim smartphones with single-cell Li-ion battery. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering stable 3.3 V at up to 1 A with fast transient response to CPU load changes. Use Value: 96% peak efficiency and 15 μA quiescent current extend talk time; 2.25 MHz switching allows ultra-compact 2.2 μH inductor placement near SoC. |
Use Scenario: Supplies 3.3 V to WLAN chipset baseband section in portable hotspot or tablet designs. IC Role / Device Role / Timing Role: Low-noise POL converter with MODE pin controllable PWM mode to avoid interference with 2.4 GHz/5 GHz RF bands. Use Value: Forced PWM operation eliminates PFM frequency variation, simplifying EMI filtering; 100% duty cycle sustains regulation as battery discharges below 3.6 V. |
| Portable Media Player Audio Codec | Point-of-Load for DSP Subsystem |
Use Scenario: Provides clean 3.3 V bias to high-fidelity audio codec ICs in MP3 players and Bluetooth headphones. IC Role / Device Role / Timing Role: Secondary regulated supply decoupled from noisy main system rail, supporting low-distortion analog signal paths. Use Value: Ultra-low 15 μA quiescent current preserves battery during music playback pauses; dynamic voltage positioning prevents pop/click artifacts during volume transitions. |
Use Scenario: Powers low-power DSP cores in industrial handheld scanners or medical diagnostic tools requiring deterministic timing. IC Role / Device Role / Timing Role: Dedicated 3.3 V rail with precise ±1.5% output accuracy and fast load-step recovery for real-time signal processing. Use Value: 2.25 MHz fixed-frequency operation enables predictable timing margins; integrated current limiting protects against DSP firmware faults causing overcurrent. |
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 | Same DRV package, 2.25 MHz, but adjustable output (0.6–6.0 V); higher quiescent current (25 μA vs 15 μA). | Requires external FB resistors; less suitable for cost-sensitive fixed-voltage designs where layout simplicity is prioritized. | Choose TPS62260DRVR only if programmable output voltage or wider VIN/VOUT flexibility is required. |
| RT8059ZSP | 3.3 V fixed, 1.5 MHz switching, 600 mA max output; larger SOT-23-6 package (2.9 × 2.8 mm). | Limited current capability and lower frequency necessitate larger inductor (4.7 μH) and reduced transient performance. | Accept RT8059ZSP only when 600 mA suffices and board space permits larger footprint and slower regulation response. |
Compared with TPS62291DRVR, TPS62260DRVR offers design flexibility at the cost of added components and slightly higher idle power, while RT8059ZSP trades current capacity and frequency for legacy compatibility - making TPS62291DRVR optimal for space-constrained, battery-life-critical 1-A 3.3 V POL applications.
Availability
TPS62291DRVR is available at Aetrix Electronics and suitable for mobile phones, wireless LAN modules, and portable media players requiring stable component supply across production lifecycles.
Supply support for TPS62291DRVR 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 systems.
The TPS6229x family was designed specifically for high-efficiency, small-footprint DC/DC conversion in battery-powered portable electronics - emphasizing light-load efficiency, fast transient response, and seamless integration with Li-ion battery voltage profiles.
FAQ
What is the output voltage tolerance of the TPS62291DRVR under PWM operation?
The TPS62291DRVR guarantees ±1.5% output voltage accuracy in PWM mode across temperature and line/load conditions. This specification applies when the MODE pin is pulled high to force fixed-frequency operation, ensuring tight regulation for noise-sensitive circuits like RF front-ends or precision ADC references. The TPS62291DRVR maintains this tolerance from –40°C to 85°C ambient, with input voltage between 2.3 V and 6.0 V.
Does the TPS62291DRVR require external feedback resistors?
No, the TPS62291DRVR does not require external feedback resistors because it integrates a precision internal resistor divider for its fixed 3.3 V output. The FB pin is internally connected to this network and must be directly tied to the output capacitor's positive terminal. Adding external resistors would disrupt regulation and is explicitly prohibited per the datasheet - unlike the adjustable TPS62290DRV variant which requires external R1/R2.
How does the MODE pin affect efficiency and noise performance of the TPS62291DRVR?
When the MODE pin is grounded, the TPS62291DRVR enters power save mode (PFM), achieving up to 96% efficiency at light loads with 15 μA quiescent current but generating variable-frequency switching noise. Pulling MODE high forces fixed 2.25 MHz PWM operation, which lowers light-load efficiency (~85% at 1 mA) but produces deterministic EMI that is easier to filter - making it preferred for RF or audio subsystems where spectral purity matters more than battery runtime.
What thermal performance can be expected from the TPS62291DRVR in a standard 2-layer PCB layout?
In a standard 2-layer PCB with the exposed thermal pad fully soldered to a 1-in² GND copper pour, the TPS62291DRVR exhibits a junction-to-board thermal resistance (RθJB) of 37.2°C/W. At 1 A output with 3.6 V input, typical power dissipation is ~300 mW, resulting in ~11°C junction-to-ambient rise above board temperature - well within the –40°C to 85°C operating range without forced airflow or additional heatsinking.
Can the TPS62291DRVR operate with input voltage below 2.3 V?
No, the TPS62291DRVR has a recommended minimum input voltage of 2.3 V per datasheet specifications. Although undervoltage lockout triggers at 1.85 V (falling), operation below 2.3 V risks violating recommended conditions - potentially causing output instability, reduced efficiency, or failure to maintain regulation. For sub-2.3 V operation, consider TI's TPS6274x series or other ultra-low-VIN buck converters explicitly rated down to 0.9 V.
TPS62291DRVR 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)
TPS62291DRVR FAQ
1.How can I place an order for TPS62291DRVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62291DRVR 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 TPS62291DRVR reliable?
The price and inventory of TPS62291DRVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62291DRVR is usually 5 days.
3.What payment methods are accepted for TPS62291DRVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62291DRVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62291DRVR?
TPS62291DRVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62291DRVR 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 TPS62291DRVR?
For technical support, including TPS62291DRVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62291DRVR requirements.
6.How does Aetrix verify that TPS62291DRVR is sourced from the original manufacturer or authorized distributors?
All TPS62291DRVR 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 TPS62291DRVR meets industry standards.
7.What is the process for return or replacement of TPS62291DRVR?
All TPS62291DRVR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62291DRVR, 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 TPS62291DRVR part is unused and in its original packaging.
Return procedure for TPS62291DRVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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