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Texas Instruments TPS62044DRCRG4
- Part No.:
- TPS62044DRCRG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS62044DRCRG4.pdf
- Description:
- IC REG BUCK 1.8V 1.2A 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,249
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Product details
Overview
TPS62044DRCRG4 from Texas Instruments is a fixed-output 1.8 V, 1.2 A synchronous step-down DC-DC converter in a 10-pin QFN 3×3 mm PowerPAD™ package, operating at 1.25 MHz with 95% peak efficiency and 18 µA quiescent current-designed for Li-ion–powered portable systems including smart phones and PDAs.
For engineers reviewing the TPS62044DRCRG4 datasheet, TPS62044DRCRG4 pinout, TPS62044DRCRG4 application, or TPS62044DRCRG4 equivalent, key selection criteria include its 1.8 V fixed output, 2.5–6.0 V input range, power-save mode operation, thermal shutdown protection, and compatibility with 22 µF ceramic output capacitors in space-constrained designs.
Technical Context
The TPS62044DRCRG4 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 output capacitors. Its internal 0.5 V reference and fixed 1.8 V output eliminate external feedback resistors.
It operates in PWM mode at medium-to-heavy loads (1.25 MHz) and automatically transitions to PFM-based power-save mode at light loads, maintaining ≥85% efficiency down to 1 mA. The MODE pin allows forced-PWM operation for noise-sensitive applications, while EN enables 0.1 µA shutdown current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±3% over full load and temperature range-enables direct powering of 1.8 V DSPs and core logic without external resistor divider. |
| Max Output Current | 1.2 A continuous-supports high-current subsystems like baseband processors in handheld devices. |
| Input Voltage Range | 2.5 V to 6.0 V-covers single-cell Li-ion (2.7–4.2 V), 3-cell NiMH/NiCd, and USB 5 V inputs with margin. |
| Switching Frequency | 1.25 MHz (PWM mode); 625 kHz (power-save mode)-enables compact 6.2 µH inductors and minimizes RF interference in xDSL and audio systems. |
| Quiescent Current | 18 µA typical-extends battery life in always-on standby modes of portable electronics. |
| Efficiency | Up to 95% at 600 mA, 3.6 VIN/1.8 VOUT-reduces thermal load and improves system-level energy efficiency. |
| Protection Features | Thermal shutdown (150°C), short-circuit protection, undervoltage lockout (1.5–2.3 V), and 100% duty-cycle low-dropout operation-ensures robustness in dynamic battery discharge profiles. |
Pinout & Package
TPS62044DRCRG4 uses a 10-pin QFN 3×3 mm package with exposed PowerPAD™ thermal pad soldered to PCB ground for enhanced heat dissipation (RθJA = 48.7°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable input | Active-high digital control: tie to VIN to enable, GND to shut down (0.1 µA ISD); must not float. |
| VIN (Pins 2,3) | Power input | Primary supply input (2.5–6.0 V); dual pins reduce trace resistance and improve current handling. |
| GND (Pin 4) | Analog ground | Reference for FB and control circuitry; separate from PGND to minimize noise coupling into feedback path. |
| FB (Pin 5) | Feedback input | Internally connected to 1.8 V output-no external divider required; high-impedance node sensitive to layout-induced noise. |
| MODE (Pin 6) | Operation mode select | Pull low for automatic PWM/PFM; pull high for forced-PWM-critical for EMI filtering in RF sections. |
| SW (Pins 7,8) | Switch node | Drain connection of internal P- and N-channel MOSFETs; high dv/dt node requiring minimal loop area and tight layout. |
| PGND (Pins 9,10) | Power ground | High-current return path for SW and internal FETs; tied to PowerPAD™ for optimal thermal and electrical performance. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic voltage positioning | Maintains output 0.8% above nominal during light load, reducing voltage droop by up to 30 mV during 1.2 A transients-enables smaller output capacitors (22 µF ceramic). |
| 100% duty-cycle operation | Supports dropout as low as VOUT + IOUT × rDS(ON)-extends usable battery range down to ~2.0 V for 1.8 V output under 1.2 A load. |
| Internal softstart | Digital stepped current ramp (ILIM/8 → ILIM/4 → ILIM/2 → 1.85 A) limits inrush-prevents input rail collapse when powered from weak sources like coin cells or supercaps. |
| Thermal shutdown with hysteresis | Shuts down at 150°C junction; resumes after cooldown to ~135°C-protects against sustained overload without latch-up. |
| Low-noise PWM/PFM transition | Smooth mode switching avoids audible coil whine and output glitches-verified in load transient testing (Figure 10, SLVS463B). |
Applications
| Smart Phone Core Power | PDA Application Processor Supply |
|---|---|
Use Scenario: Powering ARM-based application processors (e.g., OMAP, i.MX) in battery-operated smart phones requiring stable 1.8 V core voltage across 0–1.2 A load range. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering regulated 1.8 V from single Li-ion cell (2.7–4.2 V). Use Value: 95% peak efficiency and 18 µA quiescent current extend talk time; power-save mode maintains >85% efficiency at 1 mA standby current. | Use Scenario: Supplying 1.8 V to DSP cores and memory interfaces in handheld PDAs with aggressive size constraints and thermal limits. IC Role / Device Role / Timing Role: Fixed-output step-down converter with integrated MOSFETs and thermal protection-replaces discrete buck solutions. Use Value: QFN 3×3 mm PowerPAD™ package enables <100 mm² total solution size; 1.25 MHz switching allows 6.2 µH inductor and 22 µF ceramic output capacitor. |
| USB-Powered Modem | xDSL Line Card Bias Supply |
Use Scenario: Converting 5 V USB power to 1.8 V for baseband ICs and analog front-ends in portable modems. IC Role / Device Role / Timing Role: Input-voltage-flexible buck regulator supporting 5 V input with 2.5–6.0 V range and ±3% output accuracy. Use Value: 100% duty-cycle operation ensures regulation even as USB source sags to 4.4 V; MODE pin enables fixed-frequency PWM to avoid interference with USB signaling. | Use Scenario: Generating 1.8 V bias for DSL transceivers and line drivers where EMI must be minimized near sensitive analog receive paths. IC Role / Device Role / Timing Role: High-frequency (1.25 MHz) synchronous buck with forced-PWM capability via MODE pin. Use Value: Fixed 1.25 MHz operation simplifies EMI filter design; low 18 µA quiescent current reduces idle power in always-on DSL line cards. |
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 |
|---|---|---|---|
| TPS62044DRCR | No G4 suffix; RoHS-compliant but not automotive-grade (AEC-Q100 unqualified); identical electrical specs and pinout. | Same 1.8 V fixed output, QFN package, and performance-suitable for commercial portable designs without automotive qualification needs. | Select TPS62044DRCR for cost-sensitive consumer applications where automotive qualification is unnecessary. |
| TPS62130ARGTR | Higher 3-A output, 2.95–6 V input, 3-MHz switching, adjustable output (0.6–5.5 V), different pinout (16-pin VQFN). | Supports higher current and wider output range but requires PCB redesign; lacks integrated power-save mode thresholds optimized for ultra-low-IQ. | Choose TPS62130ARGTR only when scaling beyond 1.2 A or requiring programmable output voltage-requires new layout and compensation. |
Compared with TPS62044DRCRG4, TPS62044DRCR offers identical functionality at lower cost for non-automotive use, while TPS62130ARGTR provides higher current and flexibility at the expense of increased complexity, board area, and quiescent current (25 µA vs. 18 µA).
Availability
TPS62044DRCRG4 is available at Aetrix Electronics and suitable for smart phone core power, PDA application processor supply, and USB-powered modem designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS62044DRCRG4 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-optimizing efficiency across ultra-light to full-load conditions while minimizing solution size and thermal footprint in space- and energy-constrained devices.
FAQ
What is the output voltage tolerance of the TPS62044DRCRG4 over temperature and load?
The TPS62044DRCRG4 delivers a fixed 1.8 V output with ±3% tolerance across the full operating ambient temperature range (−40°C to 85°C) and load current range (0 to 1.2 A). This specification is guaranteed by internal trimming of the 0.5 V reference and feedback amplifier, eliminating drift-related errors common in resistor-based adjustable regulators. The TPS62044DRCRG4 achieves this accuracy without external components, simplifying design validation and reducing BOM count.
Does the TPS62044DRCRG4 require an external feedback resistor network?
No, the TPS62044DRCRG4 does not require an external feedback resistor network. As a fixed 1.8 V output variant, its FB pin is internally connected to the regulated output-no external divider is needed. This eliminates resistor tolerance errors, reduces layout sensitivity, and lowers quiescent current versus adjustable versions. The TPS62044DRCRG4's FB pin remains high-impedance and must be kept away from noisy nodes like SW to prevent regulation instability.
How does the MODE pin affect efficiency and noise performance in the TPS62044DRCRG4?
Pulling the MODE pin low enables automatic PWM/PFM operation-maximizing efficiency across the full load range (≥85% at 1 mA, 95% at 600 mA). Pulling MODE high forces fixed-frequency PWM mode, which increases light-load quiescent current (to ~7 µA) but delivers consistent 1.25 MHz switching for predictable EMI filtering. The TPS62044DRCRG4 supports dynamic MODE pin toggling during operation, allowing real-time trade-offs between efficiency and spectral purity based on system state.
What thermal derating applies to the TPS62044DRCRG4 at 85°C ambient?
At 85°C ambient, the TPS62044DRCRG4's maximum continuous output current is derated to 821 mA due to thermal limits-calculated from its QFN package's 48.7°C/W junction-to-ambient thermal resistance and 125°C max operating junction temperature. This derating assumes proper PCB layout with the PowerPAD™ soldered to a minimum 1-in² copper pour and ≥4 thermal vias. Without adequate copper area or vias, derating begins earlier and may drop below 600 mA at 85°C ambient.
Can the TPS62044DRCRG4 operate with input voltages below 2.5 V?
No, the TPS62044DRCRG4 cannot operate reliably below 2.5 V input. Its absolute minimum input voltage is defined by the 2.5 V lower limit of the recommended operating conditions and the 1.5–2.3 V undervoltage lockout (UVLO) threshold. Below 2.5 V, the device may fail to start or exhibit unstable regulation. For sub-2.5 V operation, consider TI's TPS621xx series (e.g., TPS62130) or alternative architectures such as boost-buck or LDO hybrids-not the TPS62044DRCRG4.
TPS62044DRCRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-VSON (3x3)
TPS62044DRCRG4 FAQ
1.How can I place an order for TPS62044DRCRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62044DRCRG4 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 TPS62044DRCRG4 reliable?
The price and inventory of TPS62044DRCRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62044DRCRG4 is usually 5 days.
3.What payment methods are accepted for TPS62044DRCRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62044DRCRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62044DRCRG4?
TPS62044DRCRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62044DRCRG4 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 TPS62044DRCRG4?
For technical support, including TPS62044DRCRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62044DRCRG4 requirements.
6.How does Aetrix verify that TPS62044DRCRG4 is sourced from the original manufacturer or authorized distributors?
All TPS62044DRCRG4 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 TPS62044DRCRG4 meets industry standards.
7.What is the process for return or replacement of TPS62044DRCRG4?
All TPS62044DRCRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62044DRCRG4, 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 TPS62044DRCRG4 part is unused and in its original packaging.
Return procedure for TPS62044DRCRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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