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Texas Instruments TPS62044DGQG4
- Part No.:
- TPS62044DGQG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62044DGQG4.pdf
- Description:
- IC REG BUCK 1.8V 1.2A 10HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,473
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Product details
Overview
TPS62044DGQG4 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 devices.
For engineers reviewing the TPS62044DGQG4 datasheet, TPS62044DGQG4 pinout, TPS62044DGQG4 application, or TPS62044DGQG4 equivalent, key selection criteria include its fixed 1.8 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 and 6.2 µH inductors.
Technical Context
The TPS62044DGQG4 implements a voltage-mode synchronous buck architecture with input voltage feed-forward, enabling fast line/load transient response and stable regulation using small ceramic capacitors. Its dual-MOSFET switch stage features P-channel (115 mΩ typ. @ 3.6 V) and N-channel (85 mΩ typ. @ 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, 625 kHz min), while high forces fixed-frequency PWM (1.25 MHz). The internal 0.5 V reference and feedback comparator enable ±3% output accuracy across load and temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±3% over 0–1.2 A load and −40°C to 85°C ambient |
| Max Output Current | 1.2 A continuous; supports transient peaks up to 1.85 A current limit |
| Switching Frequency | 1.25 MHz nominal (PWM mode); drops to 625 kHz in Power Save Mode |
| Input Voltage Range | 2.5 V to 6.0 V - compatible with single Li-ion (2.7–4.2 V) and 3-cell NiMH (3.6 V nominal) |
| Quiescent Current | 18 µA typical in active operation; 0.1 µA in shutdown (EN = GND) |
| Efficiency Peak | 95% at 600 mA load, 3.6 V input, 1.8 V output - enables >10-hour runtime in portable systems |
| Thermal Protection | Thermal shutdown activates at 150°C junction temperature; resumes after cooldown to ~150°C |
Pinout & Package
The TPS62044DGQG4 is housed in a thermally enhanced 10-pin MSOP PowerPad™ package (DGQ), requiring soldering of the exposed PowerPAD 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 current handling |
| GND (Pin 4) | Analog ground reference | Separate from PGND; connects to FB amplifier and control logic ground plane |
| 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 fixed-frequency filtering |
| SW (Pins 7,8) | Switch node | Connects to external inductor; dual pins reduce switching losses and EMI |
| PGND (Pins 9,10) | Power ground return | High-current return path for MOSFETs and inductor - must be low-inductance connection to PowerPAD |
Key Features
| Feature | Design Value |
|---|---|
| Power Save Mode | Automatically switches between PWM (full load) and PFM (light load) to maintain >85% efficiency down to 1 mA |
| Dynamic Voltage Positioning | Maintains output 0.8% above nominal at light load, reducing voltage droop during 1.2 A transients by ~20 mV |
| 100% Duty Cycle Operation | Enables regulation down to VIN = VOUT + ILOAD × rDS(on), extending battery life in Li-ion applications |
| Internal Softstart | Digital softstart limits inrush current via stepped current limit (ILIM/8 → ILIM/4 → ILIM/2 → full), preventing input rail collapse |
| Short-Circuit Protection | Reduces switching frequency and current limit to 50% when VOUT < 50% of nominal - active during startup and fault conditions |
Applications
| Smartphone Core Rail | PDA DSP Power Supply |
|---|---|
Use Scenario: Powers ARM-based application processor core (e.g., OMAP, i.MX) requiring tightly regulated 1.8 V at up to 1.2 A with fast load transients. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering core voltage; operates in Power Save Mode during idle, PWM during active compute cycles. Use Value: 95% efficiency at 600 mA extends talk time; dynamic voltage positioning reduces need for oversized output capacitance. | Use Scenario: Supplies 1.8 V to TI C55x or ADI SHARC DSP in handheld medical or industrial PDAs with battery backup. IC Role / Device Role / Timing Role: Main system regulator converting single Li-ion cell (2.7–4.2 V) to stable 1.8 V DSP rail; uses MODE pin for EMI-controlled PWM during data acquisition. Use Value: 18 µA quiescent current minimizes standby drain; thermal shutdown prevents damage during enclosure overheating. |
| Notebook Subsystem Rail | xDSL Line Card Bias |
Use Scenario: Generates 1.8 V for USB 2.0 PHY, PCIe endpoint logic, or embedded controller in ultra-thin notebooks. IC Role / Device Role / Timing Role: Secondary buck converter fed from main 5 V or 3.3 V rail; leverages 100% duty cycle to maintain regulation during brownout events. Use Value: MSOP PowerPad package enables compact layout; 1.25 MHz switching allows use of 6.2 µH inductor < 6 mm² footprint. | Use Scenario: Provides clean 1.8 V bias to ADSL/VDSL line driver ICs in residential gateways where RF noise must be minimized. IC Role / Device Role / Timing Role: Low-noise power source; MODE pin held high to force fixed 1.25 MHz PWM, enabling predictable EMI filtering design. Use Value: Fixed-frequency operation simplifies compliance testing; 22 µF ceramic output capacitor ensures < 20 mV ripple at 1.2 A load. |
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 space-constrained layouts; requires different PCB footprint and reflow profile | Select DRCR for higher power density or elevated ambient temperature (>70°C) |
| TPS62130ARGTR | Higher 3-A rating, 2.5–6 V input, adjustable/fixed 1.8 V option; 2.5 MHz switching; 17 µA IQ | Supports higher current loads and faster transient response; requires different inductor (2.2 µH) and smaller output caps | Select ARGTR when future-proofing for >1.2 A loads or needing tighter output tolerance (±1%) |
Compared with TPS62044DGQG4, the DRCR offers superior thermal dissipation in a smaller footprint but demands revised layout and assembly, while the ARGTR provides headroom for current scaling and higher switching frequency at the cost of increased complexity and component count.
Availability
TPS62044DGQG4 is available at Aetrix Electronics and suitable for smartphone core rails, PDA DSP supplies, notebook subsystems, and xDSL line card bias requiring stable component supply, long-term lifecycle support, and consistent parametric performance.
Supply support for TPS62044DGQG4 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, emphasizing ultra-low quiescent current, high light-load efficiency, and compact integration for space- and energy-constrained applications like smartphones and PDAs.
FAQ
What is the output voltage accuracy of the TPS62044DGQG4 over temperature and load?
The TPS62044DGQG4 maintains 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 comparator, and confirmed in the Electrical Characteristics table under "Fixed output voltage" for TPS62044.
Does the TPS62044DGQG4 require external components to set its output voltage?
No. The TPS62044DGQG4 is the fixed 1.8 V version of the TPS6204x family; its FB pin is internally connected to the output, eliminating the need for an external resistor divider. Unlike the adjustable TPS62040, the TPS62044DGQG4 only requires input/output capacitors (22 µF ceramic), an inductor (6.2 µH), and proper grounding per the Typical Application Circuit.
How does the MODE pin affect efficiency and noise performance in the TPS62044DGQG4?
When the MODE pin is pulled low (default), the TPS62044DGQG4 enters Power Save Mode, switching between PWM (1.25 MHz) at heavy loads and PFM (~625 kHz min) at light loads to sustain >85% efficiency down to 1 mA. Pulling MODE high forces fixed-frequency PWM, improving EMI predictability and filter design but reducing light-load efficiency by ~10–15 percentage points.
What thermal management is required for reliable operation of the TPS62044DGQG4?
The TPS62044DGQG4 uses a thermally enhanced MSOP PowerPad™ package (DGQ) that requires soldering the exposed PowerPAD to a solid PCB ground plane with ≥4 thermal vias. Without this, junction temperature can exceed 125°C at 1.2 A load. With proper layout, it sustains continuous 1.2 A operation at 70°C ambient (667 mW power rating per Dissipation Rating Table).
Can the TPS62044DGQG4 operate with input voltages below 2.5 V?
No. The TPS62044DGQG4 has a specified minimum input voltage of 2.5 V per Recommended Operating Conditions and Absolute Maximum Ratings. Below this, undervoltage lockout (UVLO) disables switching - the threshold is 1.5 V to 2.3 V, but reliable regulation only occurs above 2.5 V. Attempting operation at 2.4 V may cause erratic behavior or failure to start.
TPS62044DGQG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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
TPS62044DGQG4 FAQ
1.How can I place an order for TPS62044DGQG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62044DGQG4 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 TPS62044DGQG4 reliable?
The price and inventory of TPS62044DGQG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62044DGQG4 is usually 5 days.
3.What payment methods are accepted for TPS62044DGQG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62044DGQG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62044DGQG4?
TPS62044DGQG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62044DGQG4 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 TPS62044DGQG4?
For technical support, including TPS62044DGQG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62044DGQG4 requirements.
6.How does Aetrix verify that TPS62044DGQG4 is sourced from the original manufacturer or authorized distributors?
All TPS62044DGQG4 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 TPS62044DGQG4 meets industry standards.
7.What is the process for return or replacement of TPS62044DGQG4?
All TPS62044DGQG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62044DGQG4, 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 TPS62044DGQG4 part is unused and in its original packaging.
Return procedure for TPS62044DGQG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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