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Texas Instruments TPS62046DGQRG4
- Part No.:
- TPS62046DGQRG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62046DGQRG4.pdf
- Description:
- IC REG BUCK 3.3V 1.2A 10HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,391
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Product details
Overview
TPS62046DGQRG4 from Texas Instruments is a fixed-output 3.3 V, 1.2 A synchronous step-down DC-DC converter in a 10-pin MSOP PowerPad™ package, operating at 1.25 MHz with 95% peak efficiency and 18 µA quiescent current. It supports single-cell Li-Ion (2.5–6.0 V input) and delivers regulated power to low-voltage processors in portable electronics.
For engineers reviewing the TPS62046DGQRG4 datasheet, TPS62046DGQRG4 pinout, TPS62046DGQRG4 application, or TPS62046DGQRG4 equivalent, key selection criteria include its fixed 3.3 V output, Power Save Mode for light-load efficiency, thermal shutdown protection, 100% duty cycle dropout operation, and compatibility with 22 µF ceramic input/output capacitors.
Technical Context
The TPS62046DGQRG4 implements a voltage-mode synchronous buck topology with input voltage feed-forward control, enabling fast line/load transient response and stable regulation using small 22 µF ceramic capacitors. Its internal 0.5 V reference and feedback architecture are optimized for fixed-output variants without external resistor dividers.
It operates in PWM mode at medium-to-full load (1.25 MHz typical), automatically transitioning to PFM-based Power Save Mode below ~10 mA to maintain >85% efficiency down to microamp loads. The MODE pin allows forced-PWM operation for noise-sensitive applications, while EN enables <1 µA shutdown current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±3% over 0–1.2 A load and 3.6–6.0 V input |
| Max Output Current | 1.2 A continuous; supports transient peaks up to 1.85 A via internal current limit |
| Switching Frequency | 1.25 MHz nominal (PWM mode); 625 kHz in Power Save Mode |
| Quiescent Current | 18 µA typical in active operation; 0.1 µA in shutdown |
| Input Voltage Range | 2.5 V to 6.0 V; under-voltage lockout triggers below 1.5 V |
| Efficiency Peak | 95% at 600 mA, 3.6 V input, 3.3 V output |
| Thermal Protection | Thermal shutdown activates at 150°C junction temperature |
Pinout & Package
TPS62046DGQRG4 is housed in a thermally enhanced 10-pin MSOP PowerPad™ package (3.0 mm × 3.0 mm × 1.0 mm), requiring the exposed PowerPAD to be soldered to a PCB ground plane with thermal vias for optimal thermal performance (RθJA = 60°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable input | Active-high logic; pulls device into <1 µA shutdown when grounded |
| 2,3 - VIN | Power input | Accepts 2.5–6.0 V; dual pins reduce trace resistance and improve current handling |
| 4 - GND | Analog ground | Reference for FB and MODE; must be star-connected to PGND near IC |
| 5 - FB | Feedback input | Internally tied to 3.3 V divider; not user-accessible in fixed-output TPS62046 |
| 6 - MODE | Operating mode select | Low = auto PWM/PFM; high = forced PWM only (fixed 1.25 MHz) |
| 7,8 - SW | Switch node | Drain connection of internal P-channel MOSFET and source of N-channel rectifier |
| 9,10 - PGND | Power ground | High-current return path for SW and internal FETs; connects to PowerPAD |
Key Features
| Feature | Design Value |
|---|---|
| Power Save Mode | Automatically switches to PFM at light load (<10 mA), sustaining >85% efficiency down to 100 µA output |
| Dynamic Voltage Positioning | Maintains output 0.8% above nominal at light load, reducing voltage droop during 0→1.2 A transients |
| 100% Duty Cycle Operation | Enables regulation down to VIN – VOUT ≈ 300 mV at full load, maximizing battery runtime |
| Integrated Softstart | Digital softstart limits inrush current by stepping switch current limit (ILIM/8 → ILIM/4 → ILIM/2 → full) |
| Short-Circuit Protection | Reduces switching frequency and current limit to 50% when VOUT < 50% of nominal |
Applications
| PDA & Smartphones | USB-Powered Modems |
|---|---|
Use Scenario: Powering ARM-based application processors and baseband ICs in handheld devices powered by single-cell Li-Ion batteries. IC Role / Device Role / Timing Role: Primary 3.3 V system rail regulator delivering 1.2 A with dynamic load tracking. Use Value: Enables >95% efficiency at typical 500 mA loads and extends battery life via ultra-low 18 µA quiescent current. |
Use Scenario: Converting 5 V USB supply to stable 3.3 V for Ethernet PHYs, DSPs, and RF front-end ICs in compact modems. IC Role / Device Role / Timing Role: Point-of-load DC-DC converter with fast transient response for burst-mode data transmission. Use Value: Maintains <1% output ripple during 100 mA → 1.2 A load steps using only 22 µF ceramic capacitors. |
| Notebook Subsystems | xDSL Line Cards |
Use Scenario: Supplying 3.3 V to PC Card (PCMCIA) controllers and I/O bridges in ultraportable notebooks. IC Role / Device Role / Timing Role: Compact, thermally robust regulator mounted directly on card-edge connectors. Use Value: PowerPad package and 60°C/W thermal resistance allow 1.2 A operation without heatsinks in confined spaces. |
Use Scenario: Generating 3.3 V bias for ADSL/VDSL line drivers and analog front-ends in carrier-grade DSLAMs. IC Role / Device Role / Timing Role: Noise-controlled power stage operating at 1.25 MHz to avoid interference with upstream/downstream bands. Use Value: Forced-PWM mode (via MODE pin) ensures fixed-frequency operation for predictable EMI filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62046DRCR | Same electrical specs; QFN-10 (3×3 mm) package with lower RθJA (48.7°C/W) | Better thermal performance in high-density layouts; requires different PCB footprint | Select for higher ambient temperatures or sustained 1.2 A loads where MSOP thermal margin is insufficient |
| TPS62130ARGTR | Higher 3 A rating, 2.7–6.5 V input, 3.3 V fixed output; 2.5 MHz switching | Supports wider input range and higher current; smaller inductors possible due to higher fSW | Choose when future-proofing for higher load headroom or tighter board area constraints |
Compared with TPS62046DGQRG4, TPS62046DRCR offers superior thermal dissipation in space-constrained designs, while TPS62130ARGTR provides higher current capability and faster switching for next-generation portable systems-neither is pin-compatible, requiring layout revision.
Availability
TPS62046DGQRG4 is available at Aetrix Electronics and suitable for PDA power management, USB modem subsystems, and notebook I/O rail applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62046DGQRG4 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 TPS6204x family was designed specifically for battery-powered portable electronics, emphasizing ultra-low quiescent current, compact size, and seamless transition between PWM and power-save modes to maximize runtime.
FAQ
What is the output voltage tolerance of the TPS62046DGQRG4 under full load?
The TPS62046DGQRG4 maintains a fixed 3.3 V output with ±3% tolerance across the full 0–1.2 A load range and 3.6–6.0 V input voltage. This specification is guaranteed over −40°C to 85°C ambient temperature and includes line and load regulation effects per the SLVS463B datasheet.
Does the TPS62046DGQRG4 require external feedback resistors?
No, the TPS62046DGQRG4 does not require external feedback resistors. As a fixed-output variant, its internal resistor divider sets the 3.3 V output; the FB pin is internally connected and not accessible for adjustment. External resistors are only needed for the adjustable TPS62040.
How does the MODE pin affect efficiency in the TPS62046DGQRG4?
When the MODE pin is pulled low, the TPS62046DGQRG4 enters Power Save Mode, achieving >85% efficiency at 100 µA load. When pulled high, it operates in forced PWM mode at 1.25 MHz, improving EMI predictability but reducing light-load efficiency-e.g., dropping from 88% to 72% at 1 mA.
What thermal design guidance applies to the TPS62046DGQRG4 MSOP PowerPad package?
The TPS62046DGQRG4 DGQ package requires the exposed PowerPAD to be soldered to a solid PCB ground plane with ≥4 thermal vias (0.3 mm diameter) connecting to inner or bottom-layer copper. Without this, junction temperature can exceed 125°C at 1.2 A; with proper layout, it sustains full load at 85°C ambient.
Can the TPS62046DGQRG4 operate from a 2.5 V input?
No-the TPS62046DGQRG4 is specified for 3.6 V to 6.0 V input when delivering 3.3 V output. At 2.5 V input, the device remains in undervoltage lockout (UVLO) because its VUVLO threshold is 1.5–2.3 V, and minimum functional input is VI ≥ VO + dropout voltage (~300 mV), making 2.5 V insufficient for regulation.
TPS62046DGQRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 1.2A
- Frequency - Switching:
- 1.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-HVSSOP
TPS62046DGQRG4 FAQ
1.How can I place an order for TPS62046DGQRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62046DGQRG4 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 TPS62046DGQRG4 reliable?
The price and inventory of TPS62046DGQRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62046DGQRG4 is usually 5 days.
3.What payment methods are accepted for TPS62046DGQRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62046DGQRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62046DGQRG4?
TPS62046DGQRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62046DGQRG4 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 TPS62046DGQRG4?
For technical support, including TPS62046DGQRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62046DGQRG4 requirements.
6.How does Aetrix verify that TPS62046DGQRG4 is sourced from the original manufacturer or authorized distributors?
All TPS62046DGQRG4 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 TPS62046DGQRG4 meets industry standards.
7.What is the process for return or replacement of TPS62046DGQRG4?
All TPS62046DGQRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62046DGQRG4, 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 TPS62046DGQRG4 part is unused and in its original packaging.
Return procedure for TPS62046DGQRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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