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Texas Instruments TPS62044DGQR
- Part No.:
- TPS62044DGQR
- Manufacturer:
- Texas Instruments
- Package:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62044DGQR.pdf
- Description:
- IC REG BUCK 1.8V 1.2A 10HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,757
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Product details
Overview
TPS62044DGQR 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 input voltages from 2.5 V to 6.0 V and features power save mode, internal softstart, thermal shutdown, and short-circuit protection for portable Li-Ion/NiMH-powered systems.
For engineers reviewing the TPS62044DGQR datasheet, TPS62044DGQR pinout, TPS62044DGQR application, or TPS62044DGQR equivalent, this device is selected for high-efficiency, low-noise, space-constrained power rails in battery-operated digital signal processors, smart handhelds, and USB-powered modems where stable 1.8 V regulation under dynamic load is critical.
Technical Context
The TPS62044DGQR implements a voltage-mode synchronous buck topology with input voltage feed-forward control, enabling fast line/load transient response and stable operation with only 22 µF ceramic output capacitance. Its dual-MOSFET switch stage uses P-channel (115–210 mΩ) and N-channel (85–200 mΩ) integrated FETs, supporting 100% duty cycle for ultra-low dropout operation down to VIN ≈ VO + IO × rDS(on).
It operates in automatic PWM/PFM power save mode below ~100 mA load, switching at 625 kHz during light loads and 1.25 MHz at full load; forced PWM mode is enabled by pulling MODE high. Feedback is internally set to 0.5 V reference, with ±3% output accuracy over temperature and load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±3% - eliminates external resistor divider, reduces BOM count and layout sensitivity. |
| Max Output Current | 1.2 A continuous - supports DSP cores, ARM processors, and FPGA I/O banks requiring stable 1.8 V supply. |
| Switching Frequency | 1.25 MHz (PWM), 625 kHz (PFM) - enables compact 6.2 µH inductor and small 22 µF ceramic capacitors; minimizes RF interference in xDSL/USB systems. |
| Quiescent Current | 18 µA typical - extends battery life in always-on subsystems like real-time clocks or sensor interfaces. |
| Input Voltage Range | 2.5 V to 6.0 V - compatible with single-cell Li-Ion (2.7–4.2 V), 3-cell NiMH (3.6 V), or 5 V USB bus inputs. |
| Efficiency Peak | 95% at 600 mA - achieved via synchronous rectification and low RDS(on) MOSFETs, reducing thermal load in sealed enclosures. |
| Thermal Shutdown | 150°C junction - protects against sustained overload or poor PCB thermal design without external circuitry. |
Pinout & Package
TPS62044DGQR is housed in a thermally enhanced 10-pin MSOP PowerPad™ package (3.0 mm × 3.0 mm × 1.0 mm), requiring soldering of the exposed PowerPAD to PCB ground plane with thermal vias for optimal thermal performance (RθJA = 60°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable control input | Pull high to enable; pull low (≤0.4 V) to enter shutdown with 0.1 µA supply current - supports system-level power sequencing. |
| VIN (Pins 2,3) | Main power input | Accepts 2.5–6.0 V; dual pins reduce trace resistance and improve current handling for 1.2 A operation. |
| GND (Pin 4) | Analog ground reference | Separate from PGND to isolate feedback path noise; must be connected to local analog ground plane. |
| FB (Pin 5) | Feedback node | Internally tied to 1.8 V output - no external resistors needed; pin left unconnected in fixed-output configuration. |
| MODE (Pin 6) | Operation mode select | Pull low for auto PWM/PFM; pull high for forced PWM - enables deterministic EMI filtering in noise-sensitive audio or RF sections. |
| SW (Pins 7,8) | Switch node | Connects to inductor; dual pins lower parasitic inductance and improve efficiency at 1.25 MHz switching. |
| PGND (Pins 9,10) | Power ground return | High-current return path for both MOSFETs; must be tied to PowerPAD and routed with wide copper pour. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Voltage Positioning | Maintains output 0.8% above nominal (1.814 V) at light load, providing headroom to absorb 1.2 A transient drops without undershoot - enables use of minimal 22 µF output capacitance. |
| 100% Duty Cycle Operation | Supports dropout as low as VIN − VO ≈ 100 mV at 1.2 A (based on max rDS(on)), extending usable battery range in Li-Ion applications down to ~1.9 V input. |
| Integrated Softstart | Digital softstart limits inrush current by stepping switch current limit (ILIM/8 → ILIM/4 → ILIM/2 → full 1.85 A), preventing input rail collapse during startup from weak sources. |
| Short-Circuit Protection | Reduces switching frequency and current limit to 50% when VO < 0.9 V, limiting fault energy and enabling safe recovery without latch-off. |
| Thermal Enhancement | PowerPAD package requires soldered thermal pad with ≥4 thermal vias to inner ground plane - achieves 667 mW power dissipation at 85°C ambient. |
Applications
| PDA / Smart Handheld Power | USB-Powered Modem Rail |
|---|---|
Use Scenario: Powering ARM9-based PDA main logic rail from single-cell Li-Ion battery (2.7–4.2 V). IC Role / Device Role / Timing Role: Primary 1.8 V synchronous buck regulator delivering up to 1.2 A with dynamic load tracking during CPU burst activity. Use Value: 95% efficiency at 600 mA extends runtime by >12% vs. linear regulators; power save mode maintains 85%+ efficiency at 10 mA standby. | Use Scenario: Generating clean 1.8 V for USB 2.0 modem PHY and baseband processor from 5 V USB bus. IC Role / Device Role / Timing Role: Input-filtered, low-noise step-down converter with forced PWM mode to avoid USB packet timing interference. Use Value: 1.25 MHz fixed-frequency operation allows simple LC filter design; 18 µA quiescent current meets USB suspend current budget. |
| DSP Core Supply in xDSL CPE | Notebook Subsystem Rail |
Use Scenario: Supplying TI C55x DSP core in ADSL2+ customer premises equipment powered by 3.3 V or 5 V rail. IC Role / Device Role / Timing Role: High-transient-response 1.8 V regulator handling 100 mA → 1.2 A load steps within 10 µs. Use Value: Dynamic voltage positioning + 22 µF ceramic output cap limits transient droop to <40 mV - meets C55x VDD tolerance spec. | Use Scenario: Providing 1.8 V I/O supply for notebook chipset companion ICs from 5 V or 3.3 V intermediate rail. IC Role / Device Role / Timing Role: Compact, thermally robust point-of-load converter mounted near load with minimal board area. Use Value: MSOP PowerPad package fits tight spaces; 60°C/W thermal resistance enables 1.2 A operation without heatsink at 70°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62044DRC | Same electrical specs; QFN-10 (3×3 mm) package with 48.7°C/W RθJA vs. MSOP's 60°C/W - 22% better thermal performance. | Requires different PCB footprint and reflow profile; preferred for higher-power-density layouts with limited airflow. | Select DRC for thermal-limited designs; DGQR remains optimal for legacy MSOP-compatible boards and cost-sensitive volume production. |
| TPS62130ARGTR | Higher 3-A rating, 2.5–6 V input, adjustable/fixed 1.8 V option, but 2.5 MHz switching and 25 µA IQ - less efficient at light load than TPS62044DGQR's 18 µA. | Targets next-gen portable systems needing higher current headroom; not drop-in due to different pinout and control logic. | Choose ARGTR only when 3 A capability or smaller inductor size (2.2 µH) is required; TPS62044DGQR offers superior light-load efficiency and proven reliability in established designs. |
Compared with TPS62044DRC, the TPS62044DGQR trades thermal margin for MSOP footprint compatibility and lower assembly cost; versus TPS62130ARGTR, it delivers better light-load efficiency and simpler layout but lacks scalability beyond 1.2 A - making it ideal for cost-optimized, thermally adequate 1.8 V rails.
Availability
TPS62044DGQR is available at Aetrix Electronics and suitable for PDA power management, USB modem subsystems, and DSP core supplies requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62044DGQR 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 technologies, with decades of expertise in high-efficiency DC-DC conversion.
The TPS6204x product line was designed specifically for battery-powered portable electronics requiring high efficiency across wide load ranges, minimal external components, and robust protection features - targeting PDAs, smart handhelds, and xDSL modems.
FAQ
What is the output voltage tolerance of the TPS62044DGQR over temperature and load?
The TPS62044DGQR provides a fixed 1.8 V output with ±3% accuracy across the full operating range: −40°C to 85°C ambient temperature and 0 mA to 1.2 A load current. This specification is guaranteed by internal trimming of the 0.5 V reference and feedback amplifier, and does not require external calibration. The TPS62044DGQR maintains this tolerance even during dynamic load transients due to its fast voltage-mode control architecture.
Does the TPS62044DGQR require external compensation components?
No, the TPS62044DGQR uses an internally compensated voltage-mode control loop and requires no external compensation components. Its stability is optimized for standard 6.2 µH inductors and 22 µF ceramic output capacitors, as validated in the TI SLVS463B datasheet. Adding external compensation may destabilize the regulator or degrade transient response - TI explicitly specifies zero external compensation for this device.
Can the TPS62044DGQR operate with input voltage below 2.5 V?
No, the TPS62044DGQR has a specified minimum input voltage of 2.5 V per its absolute maximum and recommended operating conditions. Below 2.5 V, the undervoltage lockout (UVLO) circuit disables switching, and the device enters shutdown. Attempting operation at 2.4 V or lower risks undefined behavior, failure to regulate, or excessive dropout - the TPS62044DGQR is not rated for sub-2.5 V operation.
How does the MODE pin affect efficiency in the TPS62044DGQR?
When the MODE pin is pulled low (default), the TPS62044DGQR enters power save mode below ~100 mA load, reducing switching frequency to 625 kHz and achieving >85% efficiency at 10 mA. When MODE is pulled high, it forces fixed 1.25 MHz PWM operation at all loads, improving EMI predictability but lowering light-load efficiency to ~72% at 10 mA. The TPS62044DGQR's 18 µA quiescent current applies only in auto-mode (MODE = low).
Is the PowerPAD on the TPS62044DGQR package required to be connected to ground?
Yes, the exposed PowerPAD on the TPS62044DGQR MSOP package must be soldered to a PCB ground plane with at least four thermal vias. TI specifies this connection as mandatory for thermal performance and electrical stability - leaving the PowerPAD floating or unconnected violates the Absolute Maximum Ratings and causes thermal runaway, premature failure, or erratic regulation. The TPS62044DGQR's RθJA of 60°C/W assumes proper PowerPAD grounding.
TPS62044DGQR 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:
- Active
- 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
TPS62044DGQR FAQ
1.How can I place an order for TPS62044DGQR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62044DGQR 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 TPS62044DGQR reliable?
The price and inventory of TPS62044DGQR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62044DGQR is usually 5 days.
3.What payment methods are accepted for TPS62044DGQR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62044DGQR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62044DGQR?
TPS62044DGQR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62044DGQR 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 TPS62044DGQR?
For technical support, including TPS62044DGQR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62044DGQR requirements.
6.How does Aetrix verify that TPS62044DGQR is sourced from the original manufacturer or authorized distributors?
All TPS62044DGQR 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 TPS62044DGQR meets industry standards.
7.What is the process for return or replacement of TPS62044DGQR?
All TPS62044DGQR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62044DGQR, 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 TPS62044DGQR part is unused and in its original packaging.
Return procedure for TPS62044DGQR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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