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Texas Instruments TPS62044DGQRG4
- Part No.:
- TPS62044DGQRG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62044DGQRG4.pdf
- Description:
- IC REG BUCK 1.8V 1.2A 10HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,194
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Product details
Overview
TPS62044DGQRG4 from Texas Instruments is a fixed-output 1.8 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 or 3-cell NiMH/NiCd battery inputs (2.5 V–6.0 V) and delivers regulated power to low-voltage DSPs and processors in portable computing.
For engineers reviewing the TPS62044DGQRG4 datasheet, TPS62044DGQRG4 pinout, TPS62044DGQRG4 application, or TPS62044DGQRG4 equivalent, key selection criteria include its fixed 1.8 V output, Power Save Mode for light-load efficiency, thermal shutdown protection, 100% duty cycle operation for ultra-low dropout, and compatibility with 22 µF ceramic input/output capacitors.
Technical Context
The TPS62044DGQRG4 implements a voltage-mode synchronous buck architecture with input voltage feed-forward control, enabling fast line/load transient response and stable regulation using small ceramic capacitors. Its dual-MOSFET switch stage features P-channel (115 mΩ typical @ 3.6 V) and N-channel (85 mΩ typical @ 3.6 V) power FETs integrated into a single die.
Operation includes automatic PWM/PFM mode switching via the MODE pin: low enables power save mode (PFM at light loads, PWM at heavy loads); high forces fixed-frequency PWM for noise-sensitive applications. Internal softstart limits inrush current, while dynamic voltage positioning maintains ±0.8% output headroom during load transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±3% over full load (0–1.2 A) and input range (2.5–6.0 V) |
| Switching Frequency | 1.25 MHz nominal (1–1.5 MHz range); enables compact 6.2 µH inductor and minimal EMI filtering |
| Efficiency | Up to 95% at 600 mA/3.6 V input; maintains >85% down to 1 mA due to Power Save Mode |
| Quiescent Current | 18 µA typical in active operation; 0.1 µA in shutdown (EN = GND) |
| Input Voltage Range | 2.5 V to 6.0 V - supports single Li-Ion (2.7–4.2 V) and 3-cell NiMH (3.6 V nominal) battery systems |
| Thermal Protection | Thermal shutdown triggers at 150°C junction temperature; resumes operation after cooldown to ~150°C |
| Short-Circuit Response | Reduces switching frequency and current limit to 50% when output drops below 50% of nominal voltage |
Pinout & Package
The TPS62044DGQRG4 is housed in a thermally enhanced 10-pin MSOP PowerPad™ package (DGQ), where the exposed PowerPAD must be soldered to PCB ground for optimal thermal performance (RθJA = 60°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable control input | Pull high to VIN to activate; pull low to GND for 0.1 µA shutdown; must not float |
| VIN (Pins 2,3) | Main power input | Accepts 2.5–6.0 V; dual pins reduce trace resistance and improve thermal path |
| GND (Pin 4) | Analog reference ground | Separate from PGND; connects to feedback network and control circuitry |
| FB (Pin 5) | Feedback sense | Internally tied to 1.8 V output; no external divider required for fixed-output version |
| MODE (Pin 6) | Operating mode select | Low = auto PWM/PFM; high = forced PWM; enables noise-sensitive system design |
| SW (Pins 7,8) | Switch node | Connects to external inductor; dual pins reduce parasitic inductance and improve efficiency |
| PGND (Pins 9,10) | Power ground return | High-current return path for MOSFETs and inductor; must be solidly connected to PowerPAD |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Voltage Positioning | Maintains output 0.8% above nominal at light load, reducing voltage droop during 0→1.2 A transients without large bulk capacitance |
| 100% Duty Cycle Operation | Enables regulation down to VIN − VOUT ≈ ILOAD × rDS(on), extending battery runtime in Li-Ion systems |
| Internal Softstart | Digital ramp-up limits inrush current to prevent input rail collapse during startup with high-impedance sources |
| Thermal Shutdown + Short-Circuit Protection | Independent fault responses: thermal shutdown disables both FETs; short-circuit reduces fSW and ILIM by 50% to limit stress |
| PowerPAD Thermal Enhancement | Exposed copper pad soldered to PCB ground lowers junction-to-board thermal resistance, supporting 1.2 A continuous operation |
Applications
| Smartphone Baseband Processor Supply | USB-Powered Modem Core Rail |
|---|---|
Use Scenario: Powers ARM-based baseband processor in 3G/4G smartphones powered by single-cell Li-Ion battery (2.7–4.2 V). IC Role / Device Role / Timing Role: Primary 1.8 V core supply delivering up to 1.2 A with fast load transient response to handle burst-mode processing. Use Value: Dynamic voltage positioning and 1.25 MHz switching enable <100 mV droop during 100 mA → 1.2 A transients using only 22 µF ceramic output capacitance. | Use Scenario: Generates stable 1.8 V rail for DSL/USB modem PHY and MAC logic from 5 V USB bus input. IC Role / Device Role / Timing Role: Step-down regulator converting 5 V USB source to processor-compatible 1.8 V, rejecting USB port ripple and noise. Use Value: 18 µA quiescent current and Power Save Mode maintain >85% efficiency at standby currents (<1 mA), extending modem uptime on bus-powered operation. |
| Notebook Subsystem Memory Interface | xDSL Line Card DSP Core |
Use Scenario: Supplies 1.8 V to DDR memory interface logic in ultraportable notebooks using 3-cell NiMH battery (3.6 V nominal). IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator placed near memory controller to minimize IR drop and noise coupling. Use Value: 95% peak efficiency and low 115 mΩ P-FET RDS(on) reduce power loss and thermal load in space-constrained chassis. | Use Scenario: Powers TI C64x+ DSP core in xDSL line cards requiring clean, low-noise 1.8 V at up to 1.2 A. IC Role / Device Role / Timing Role: Primary DC-DC converter operating in forced PWM mode (MODE = high) to avoid RF interference with ADSL signal bands. Use Value: Fixed 1.25 MHz switching allows deterministic EMI filtering; internal softstart prevents startup glitches that could disrupt line synchronization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62044DRCR | Same electrical specs; QFN-10 (3×3 mm) package with lower RθJA (48.7°C/W) vs MSOP's 60°C/W | Better thermal performance in high-ambient or high-density layouts; requires different PCB footprint and reflow profile | Select DRCR for higher power density or ambient >70°C; DGQRG4 preferred for legacy MSOP designs or cost-sensitive volume builds |
| TPS62130ARGTR | Higher 3-A rating, 2.5–6 V input, adjustable/fixed 1.8 V option; 2.25 MHz fSW; lower 12 µA IQ | Supports higher current and faster transient response; newer generation with improved light-load efficiency | Choose ARGTR for new designs needing >1.2 A headroom or tighter regulation; DGQRG4 remains optimal for strict 1.2 A, cost-optimized, or footprint-constrained implementations |
Compared with TPS62044DRCR and TPS62130ARGTR, the TPS62044DGQRG4 offers proven reliability in portable battery systems, lowest BOM cost among 1.8 V 1.2 A converters, and seamless integration into existing MSOP-based layouts-without requiring PCB redesign or thermal derating.
Availability
TPS62044DGQRG4 is available at Aetrix Electronics and suitable for smartphone baseband supplies, USB-powered modem rails, and notebook subsystem power requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62044DGQRG4 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 for portable and industrial systems.
The TPS6204x product line was designed specifically for battery-powered portable electronics-delivering high efficiency across wide load ranges, ultra-low quiescent current, and robust protection features in thermally optimized packages.
FAQ
What is the output voltage tolerance of the TPS62044DGQRG4 over temperature and load?
The TPS62044DGQRG4 provides a fixed 1.8 V output with ±3% tolerance across the full operating range: input voltage 2.5 V to 6.0 V, output current 0 mA to 1.2 A, and ambient temperature −40°C to 85°C. This specification is guaranteed by internal feedback calibration and is verified per the SLVS463B datasheet's Electrical Characteristics table under "VO Fixed output voltage".
Does the TPS62044DGQRG4 require an external feedback resistor network?
No, the TPS62044DGQRG4 does not require an external feedback resistor network. As a fixed-output variant (1.8 V), the FB pin is internally connected to the output; external resistors are only needed for the adjustable TPS62040 version. Connecting resistors to FB on the TPS62044DGQRG4 would disrupt regulation and is not supported.
How does the MODE pin affect efficiency and noise performance in the TPS62044DGQRG4?
When the MODE pin is pulled low, the TPS62044DGQRG4 operates in Power Save Mode-switching between PWM (at medium/heavy loads) and PFM (at light loads)-achieving >85% efficiency down to 1 mA. When MODE is pulled high, it forces fixed-frequency PWM operation at 1.25 MHz, eliminating low-frequency PFM noise but reducing light-load efficiency by ~10–15 percentage points compared to Power Save Mode.
What thermal considerations apply to the TPS62044DGQRG4's MSOP PowerPad package?
The TPS62044DGQRG4's DGQ package requires the exposed PowerPAD to be soldered to a PCB ground plane with thermal vias for effective heat dissipation. With proper layout, it delivers 1.2 A continuously at 85°C ambient; without PowerPAD connection, thermal resistance rises sharply and current capability drops significantly. The datasheet specifies 667 mW max power dissipation at 85°C ambient when mounted per recommended guidelines.
Can the TPS62044DGQRG4 operate with input voltages below 2.5 V?
No, the TPS62044DGQRG4 has a specified minimum input voltage of 2.5 V per Absolute Maximum Ratings and Recommended Operating Conditions. Operation below 2.5 V may cause undervoltage lockout activation or unstable regulation. The UVLO threshold is 1.5 V to 2.3 V, but reliable start-up and regulation require VI ≥ 2.5 V. For sub-2.5 V inputs, consider TI's TPS621xx or TPS628xx families.
TPS62044DGQRG4 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):
- 1.8V
- 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
TPS62044DGQRG4 FAQ
1.How can I place an order for TPS62044DGQRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62044DGQRG4 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 TPS62044DGQRG4 reliable?
The price and inventory of TPS62044DGQRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62044DGQRG4 is usually 5 days.
3.What payment methods are accepted for TPS62044DGQRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62044DGQRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62044DGQRG4?
TPS62044DGQRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62044DGQRG4 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 TPS62044DGQRG4?
For technical support, including TPS62044DGQRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62044DGQRG4 requirements.
6.How does Aetrix verify that TPS62044DGQRG4 is sourced from the original manufacturer or authorized distributors?
All TPS62044DGQRG4 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 TPS62044DGQRG4 meets industry standards.
7.What is the process for return or replacement of TPS62044DGQRG4?
All TPS62044DGQRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62044DGQRG4, 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 TPS62044DGQRG4 part is unused and in its original packaging.
Return procedure for TPS62044DGQRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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