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Texas Instruments TPS62044DGQ
- Part No.:
- TPS62044DGQ
- Manufacturer:
- Texas Instruments
- Package:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62044DGQ.pdf
- Description:
- IC REG BUCK 1.8V 1.2A 10HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:109
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Product details
Overview
TPS62044DGQ from Texas Instruments is a 1.2 A, 1.25 MHz synchronous step-down DC-DC converter in a 10-pin MSOP PowerPad™ package, delivering fixed 1.8 V output from 2.5–6.0 V input. It features power save mode (PFM/PWM auto-switching), 18 µA quiescent current, 95% peak efficiency, and dynamic voltage positioning for portable battery-powered systems.
For engineers reviewing the TPS62044DGQ datasheet, TPS62044DGQ pinout, TPS62044DGQ application, or TPS62044DGQ equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives, and supply support for high-reliability embedded power design.
Technical Context
The TPS62044DGQ implements a voltage-mode synchronous buck controller with input voltage feed-forward, enabling fast line/load transient response and stable operation with only 22 µF ceramic input/output capacitors. Its dual-mode operation-PWM at ≥1.25 MHz under medium-to-heavy loads and PFM at light loads-maintains >85% efficiency down to 1 mA.
It integrates P-channel (115 mΩ typical @ 3.6 V) and N-channel (85 mΩ typical @ 3.6 V) MOSFETs, supports 100% duty cycle for ultra-low dropout, and uses a 0.5 V internal reference with ±3% output voltage accuracy over temperature and load. Thermal shutdown (150°C) and short-circuit protection are built-in.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±3% over −40°C to 85°C ambient; enables direct powering of 1.8-V core logic without external feedback resistors. |
| Max Output Current | 1.2 A continuous; sufficient for DSPs, low-voltage microcontrollers, and USB peripherals in space-constrained portable designs. |
| Switching Frequency | 1.25 MHz nominal (1–1.5 MHz range); allows compact 6.2 µH inductors and minimizes EMI in xDSL and RF-sensitive applications. |
| Quiescent Current | 18 µA typical in power save mode; extends battery life in always-on subsystems like real-time clocks or sensor wake-up circuits. |
| Input Voltage Range | 2.5 V to 6.0 V; compatible with single-cell Li-ion (2.7–4.2 V), 3-cell NiMH/NiCd (3.6 V), and regulated 5-V rails. |
| Efficiency Peak | 95% at 600 mA/3.6 VIN/1.8 VOUT; reduces thermal load on PCB and eliminates need for heatsinking in handheld enclosures. |
| Package | 10-pin MSOP PowerPad™ (DGQ); exposed thermal pad requires PCB soldering for RθJA = 60°C/W and reliable 1.2-A operation. |
Pinout & Package
TPS62044DGQ uses a thermally enhanced 10-pin MSOP PowerPad™ package (3.0 mm × 3.0 mm × 1.0 mm). The exposed PowerPAD must be soldered to a dedicated GND copper area with ≥4 thermal vias for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable input | Active-high digital control: tie to VIN to enable, GND to shut down (0.1 µA ISD); must not float. |
| 2,3 - VIN | Power input | Dual input pins reduce trace resistance and improve high-current path integrity; accepts 2.5–6.0 V with UVLO at 1.5–2.3 V. |
| 4 - GND | Analog ground | Reference for FB and MODE; separate from PGND to minimize noise coupling into feedback loop. |
| 5 - FB | Feedback input | Internally connected to 1.8-V divider; no external resistors needed-simplifies layout and improves stability. |
| 6 - MODE | Operation mode select | Pull low for auto PWM/PFM; pull high for forced PWM only-enables deterministic EMI filtering in noise-critical systems. |
| 7,8 - SW | Switch node | Drain connection of internal P- and N-MOSFETs; requires minimal-area routing to reduce EMI and ringing. |
| 9,10 - PGND | Power ground | High-current return path for inductor and MOSFETs; must connect directly to PowerPAD and input/output capacitors. |
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 transients with ≤1% droop using only 22 µF output capacitance. |
| 100% Duty Cycle Operation | Enables regulation down to VIN − VOUT ≈ 100 mV at light loads-maximizes usable battery voltage range in single-cell Li-ion applications. |
| Internal Softstart | Digital softstart limits inrush current by ramping switch current in four steps (ILIM/8 → ILIM/4 → ILIM/2 → 1.85 A), preventing input rail collapse during startup. |
| Thermal Shutdown & Short-Circuit Protection | Shuts down P/N-MOSFETs at 150°C junction temp; reduces switching frequency and current limit to 50% if VOUT < 0.9 V during fault conditions. |
| Low-Noise PWM Mode | Forced PWM via MODE pin ensures constant 1.25-MHz switching-simplifies EMI filter design and avoids audible noise in audio subsystems. |
Applications
| Smartphone Core Rail | USB-Powered Modem |
|---|---|
|
Use Scenario: Powering ARM Cortex-A series application processors requiring tightly regulated 1.8-V I/O or memory interface rails. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering clean, low-noise 1.8 V at up to 1.2 A with dynamic load tracking. Use Value: Dynamic voltage positioning and 1.25-MHz switching enable sub-100-mV transient droop with 22-µF ceramic output caps-reducing BOM count and board area. |
Use Scenario: Converting 5-V USB power to stable 1.8-V supply for DSL/ADSL PHY ICs and line drivers. IC Role / Device Role / Timing Role: High-efficiency intermediate bus converter operating across full USB input range (4.4–5.25 V). Use Value: 95% peak efficiency and 18-µA quiescent current extend modem uptime on bus-powered operation while meeting USB inrush limits. |
| PDA Application Processor | Notebook Subsystem Rail |
|
Use Scenario: Supplying 1.8-V core voltage to OMAP or i.MX application processors in handheld PDAs with Li-ion batteries. IC Role / Device Role / Timing Role: Battery-optimized buck converter supporting 2.5–4.2 V input and 100% duty cycle for end-of-discharge operation. Use Value: 100% duty cycle extends runtime by 8–12 minutes per charge cycle compared to non-dropout regulators-verified in TI reference designs. |
Use Scenario: Generating 1.8-V auxiliary rail for PCIe Gen1/2 SerDes, SATA controllers, or embedded security modules in ultrabooks. IC Role / Device Role / Timing Role: Low-noise, fast-transient point-of-load regulator with forced PWM mode for EMI-controlled zones. Use Value: Forced PWM mode (MODE = HIGH) ensures predictable 1.25-MHz switching spectrum-simplifying compliance testing against CISPR-22 Class B limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62044DRC | Same electrical specs and pinout, but in 3×3 mm QFN (DRC) package with lower RθJA (48.7°C/W vs. 60°C/W) and no exposed PowerPAD requirement. | Better thermal performance in high-ambient or high-density layouts; requires different land pattern and reflow profile. | Select DRC for higher power density or when thermal vias under MSOP PowerPAD are impractical. |
| TPS62130ARGTR | Higher 3-A rating, 2.5–6.0 V input, adjustable 0.9–4.5 V output, 2.5-MHz switching, but 26-µA IQ and no dynamic voltage positioning. | Supports wider output range and higher current, but lacks 1.8-V fixed option and light-load efficiency optimization of TPS62044DGQ. | Choose ARGTR only when adjustable output or >1.2-A capability is required-otherwise TPS62044DGQ offers superior light-load efficiency and simpler BOM. |
Compared with TPS62044DRC, the DGQ offers identical functionality in a legacy MSOP footprint preferred for repairability and hand-soldering; versus TPS62130ARGTR, it delivers better light-load efficiency and tighter 1.8-V regulation at lower cost and complexity for fixed-rail applications.
Availability
TPS62044DGQ is available at Aetrix Electronics and suitable for smartphone core rails, USB-powered modems, PDA application processors, and notebook subsystem rails requiring stable component supply, long-term lifecycle support, and consistent parametric performance.
Supply support for TPS62044DGQ 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 family was designed specifically for battery-powered portable electronics-including PDAs, smartphones, and notebooks-where ultra-low quiescent current, small solution size, and dynamic load handling are critical.
FAQ
What is the output voltage tolerance of the TPS62044DGQ over temperature and load?
The TPS62044DGQ delivers a fixed 1.8 V output with ±3% accuracy across −40°C to 85°C ambient temperature and 0–1.2 A load current. This is guaranteed by internal trimming of the 0.5 V reference and feedback divider, eliminating external resistor tolerance dependencies.
Does the TPS62044DGQ require external feedback resistors for its 1.8-V output?
No. The TPS62044DGQ is the fixed 1.8-V version of the TPS6204x family-its feedback divider is fully integrated. Pin 5 (FB) connects internally to the 1.8-V tap, so no external resistors are needed, reducing BOM count and layout sensitivity.
How does the MODE pin affect efficiency and noise performance in the TPS62044DGQ?
When MODE is pulled low, TPS62044DGQ automatically switches between PWM (≥1.25 MHz) and PFM (variable frequency) to maintain >85% efficiency from 1 mA to 1.2 A. Pulling MODE high forces fixed-frequency PWM, improving EMI predictability but reducing light-load efficiency by ~10–15%.
What thermal design practices are required for reliable 1.2-A operation of the TPS62044DGQ?
For sustained 1.2-A output, the TPS62044DGQ's MSOP PowerPAD must be soldered to a minimum 100-mm² GND copper area with ≥4 thermal vias (0.3-mm diameter, spaced ≤1 mm apart) connecting to inner GND planes. Without this, junction temperature exceeds 125°C under full load at 70°C ambient.
Can the TPS62044DGQ operate with input voltage below 2.5 V?
No. The TPS62044DGQ has an absolute minimum input voltage of 2.5 V per datasheet specifications. Below this, undervoltage lockout (UVLO) disables switching. At 2.5 V input, it can sustain 1.2-A output only if VOUT ≤ 1.7 V due to P-MOSFET RDS(on) and dropout constraints.
TPS62044DGQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- 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
TPS62044DGQ FAQ
1.How can I place an order for TPS62044DGQ through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62044DGQ 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 TPS62044DGQ reliable?
The price and inventory of TPS62044DGQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62044DGQ is usually 5 days.
3.What payment methods are accepted for TPS62044DGQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62044DGQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62044DGQ?
TPS62044DGQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62044DGQ 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 TPS62044DGQ?
For technical support, including TPS62044DGQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62044DGQ requirements.
6.How does Aetrix verify that TPS62044DGQ is sourced from the original manufacturer or authorized distributors?
All TPS62044DGQ 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 TPS62044DGQ meets industry standards.
7.What is the process for return or replacement of TPS62044DGQ?
All TPS62044DGQ units undergo pre-shipment inspection (PSI). If there is an issue with TPS62044DGQ, 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 TPS62044DGQ part is unused and in its original packaging.
Return procedure for TPS62044DGQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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