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Texas Instruments TPS62040DRCRG4
- Part No.:
- TPS62040DRCRG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS62040DRCRG4.pdf
- Description:
- IC REG BUCK ADJ 1.2A 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,080
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Product details
Overview
TPS62040DRCRG4 from Texas Instruments is an adjustable-output, synchronous step-down DC-DC converter optimized for single-cell Li-Ion or 3-cell NiMH/NiCd battery-powered portable systems. It delivers up to 1.2 A at output voltages from 0.7 V to VIN, operates from 2.5 V to 6.0 V input, switches at 1.25 MHz, and achieves up to 95% efficiency with 18 µA quiescent current - enabling long runtime in PDAs, smart phones, and USB-powered modems.
For engineers reviewing the TPS62040DRCRG4 datasheet, TPS62040DRCRG4 pinout, TPS62040DRCRG4 application, or TPS62040DRCRG4 equivalent, key selection criteria include its 10-pin QFN 3×3 mm PowerPad™ package, power-save mode (PFM) operation at light loads, dynamic voltage positioning, 100% duty cycle low-dropout capability, and compatibility with 22 µF ceramic input/output capacitors and 6.2 µH inductors.
Technical Context
The TPS62040DRCRG4 implements a voltage-mode synchronous buck controller with input voltage feed-forward, enabling fast line/load transient response and stable operation with small ceramic capacitors. Its dual-MOSFET power stage integrates a P-channel high-side switch (115 mΩ typical at 3.6 V) and N-channel synchronous rectifier (85 mΩ typical), eliminating external diode losses.
Operation includes automatic PWM/PFM mode switching via the MODE pin: low enables power-save mode (625 kHz min frequency, ~1% output ripple), while high forces fixed-frequency PWM (1.25 MHz nominal). Internal softstart limits inrush current, and thermal shutdown activates at ~150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 6.0 V - supports single Li-Ion (2.7–4.2 V) or 3-cell NiMH/NiCd (3.6–4.5 V) battery inputs without external regulation. |
| Output Voltage Range | 0.7 V to VIN - adjustable via external resistor divider; enables direct powering of low-voltage DSPs, cores, and I/O rails down to sub-1V levels. |
| Max Output Current | 1.2 A - sufficient for CPU/DSP core supplies in handheld computing and communication devices. |
| Switching Frequency | 1.25 MHz (PWM mode), 625 kHz (PFM mode) - enables compact magnetics and filtering; minimizes RF interference in xDSL and wireless applications. |
| Quiescent Current | 18 µA typical - extends battery life in standby/sleep states without compromising startup speed or regulation accuracy. |
| Efficiency Peak | Up to 95% - achieved at mid-load with 3.6 V input/1.8 V output; reduces thermal load and PCB area requirements in space-constrained designs. |
| Reference Voltage | 0.5 V - low FB reference enables precise, low-noise output setting with high-impedance resistor dividers (≤1 MΩ), minimizing bias current loss. |
| Thermal Shutdown | ~150°C - protects device under overload or poor heatsinking; resumes operation after junction cools below hysteresis threshold. |
Pinout & Package
TPS62040DRCRG4 uses a 10-pin QFN 3×3 mm package with exposed PowerPad™ thermal pad (must be soldered to PCB ground plane). The PowerPad significantly lowers thermal resistance (RθJA = 48.7°C/W with thermal vias), enabling reliable 1.2-A operation in compact layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable control input | Pull high to enable converter; pull low to enter shutdown (ISD ≈ 0.1 µA); must not float - requires explicit termination. |
| VIN (Pins 2,3) | Main power input | Accepts 2.5–6.0 V; dual pins reduce trace resistance and improve current handling for high-efficiency operation. |
| GND (Pin 4) | Analog ground reference | Provides clean reference for feedback and control circuitry; separate from PGND to minimize noise coupling into FB node. |
| FB (Pin 5) | Feedback input | Connects to resistor divider for adjustable output; internal 0.5-V reference enables accurate VO setting independent of supply variations. |
| MODE (Pin 6) | Operating mode select | Low = auto PWM/PFM; high = forced PWM - allows deterministic EMI filtering in noise-sensitive systems like audio or RF front-ends. |
| SW (Pins 7,8) | Switch node | Drives external inductor; dual pins reduce parasitic inductance and improve switching efficiency at 1.25 MHz. |
| PGND (Pins 9,10) | Power ground return | Carries high-frequency inductor current; dual pins and dedicated PowerPad connection minimize ground bounce and thermal rise. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Voltage Positioning | Maintains output ~0.8% above nominal at light load, providing headroom to absorb heavy load transients without undershoot - enables use of only 22 µF output capacitance. |
| 100% Duty Cycle Operation | Enables regulation down to VIN − VOUT ≈ IOUT × rDS(on), extending usable battery range in Li-Ion systems (e.g., sustaining 1.8 V output until VIN drops to ~2.0 V). |
| Internal Softstart | Digital softstart ramps switch current in four steps (ILIM/8 → ILIM/4 → ILIM/2 → full ILIM), limiting inrush and preventing input rail collapse during startup from weak sources. |
| Short-Circuit Protection | Reduces switching frequency and current limit to 50% when VOUT < 50% of nominal - prevents thermal runaway and enables safe recovery after fault clearance. |
| Thermal Enhancement | Exposed PowerPad with thermal vias achieves RθJA = 48.7°C/W, allowing continuous 1.2-A operation at 70°C ambient without derating. |
Applications
| Smartphone Core Supply | USB-Powered Modem |
|---|---|
Use Scenario: Powering ARM Cortex-A series application processor cores requiring dynamically scalable 0.8–1.4 V at up to 1.2 A in slim-profile handsets. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering tightly regulated, low-noise core voltage with fast transient response to CPU DVFS events. Use Value: Dynamic voltage positioning and 1.25-MHz switching enable <100-mV undershoot during 1-A load steps, supporting aggressive power management without external LDO post-regulation. | Use Scenario: Converting 5-V USB bus power to stable 3.3-V or 1.8-V rails for ADSL/VDSL PHY, Ethernet MAC, and flash memory in compact broadband modems. IC Role / Device Role / Timing Role: High-efficiency, low-quiescent-current step-down converter operating across full USB voltage range (4.75–5.25 V) with minimal heat generation in sealed enclosures. Use Value: 95% peak efficiency and 18-µA quiescent current extend modem uptime on bus-powered operation; QFN package simplifies thermal layout in dense PCBs. |
| PDA System-on-Chip Supply | Notebook Subsystem Rail |
Use Scenario: Generating 1.2-V or 1.5-V logic supply for OMAP or i.MX SoCs in legacy PDAs and industrial handheld terminals. IC Role / Device Role / Timing Role: Adjustable-output buck converter supporting multiple SoC voltage configurations via resistor feedback network; integrated softstart ensures glitch-free boot. Use Value: Adjustable 0.7–VIN range and ±3% output accuracy eliminate need for external trimming; 10-pin QFN footprint saves board space versus older SOIC solutions. | Use Scenario: Providing 1.8-V or 2.5-V auxiliary rail for DDR memory termination, camera interface, or touch controller in ultraportable notebooks. IC Role / Device Role / Timing Role: Secondary buck regulator operating from main 5-V or 3.3-V system rail; supports dynamic voltage scaling and deep-sleep modes. Use Value: Power-save mode (PFM) reduces no-load power to <1 µW, cutting standby consumption; MODE pin allows forced PWM during active video streaming to suppress audible coil whine. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62040DRCT | Same die, identical electrical specs; differs only in tape-and-reel packaging (3000 vs 2500 pcs/reel) and RoHS compliance status (G4 suffix denotes green/lead-free). | No functional difference; suitable for same designs and layouts. | Select TPS62040DRCT if volume procurement requires standard reel size or if legacy BOM specifies non-G4 variant. |
| TPS62130ARGTR | Higher 3-A rating, 2.5–6.0 V input, 1.2-MHz fixed frequency, but uses 16-pin VQFN and lacks dynamic voltage positioning and 100% duty cycle mode. | Better suited for higher-current applications; less optimal for ultra-low-IQ or deep-battery-discharge scenarios. | Choose TPS62130ARGTR only when >1.2-A output or different package constraints drive redesign; not drop-in compatible. |
Compared with TPS62040DRCRG4, TPS62040DRCT offers identical performance in a functionally equivalent package, while TPS62130ARGTR trades ultra-low quiescent current and battery-endurance features for higher current capacity and different thermal characteristics - making TPS62040DRCRG4 preferable for space- and energy-constrained portable designs.
Availability
TPS62040DRCRG4 is available at Aetrix Electronics and suitable for smartphone core supplies, USB-powered modems, PDA SoC rails, and notebook subsystem power requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for TPS62040DRCRG4 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 - emphasizing ultra-low quiescent current, small solution size, dynamic voltage positioning, and seamless transition between PWM and PFM modes to maximize runtime across all load conditions.
FAQ
What is the maximum output current capability of the TPS62040DRCRG4?
The TPS62040DRCRG4 supports a continuous output current of up to 1.2 A under recommended operating conditions (TA ≤ 85°C, proper PCB thermal design with PowerPad soldered and thermally vias). This rating assumes use of a 6.2-µH inductor and 22-µF ceramic input/output capacitors. Derating applies above 70°C ambient due to thermal limits - the device enters thermal shutdown at ~150°C junction temperature.
Does the TPS62040DRCRG4 require external compensation components?
No, the TPS62040DRCRG4 uses an internally compensated voltage-mode control architecture. It does not require external compensation networks, simplifying design and reducing bill-of-materials count. Stability is ensured across the full output voltage range (0.7 V to VIN) and load range (0–1.2 A) when using recommended 22-µF ceramic output capacitors and 6.2-µH inductors per the datasheet.
How does the MODE pin affect efficiency and noise performance in the TPS62040DRCRG4?
When the MODE pin is pulled low, the TPS62040DRCRG4 operates in automatic PWM/PFM mode - achieving up to 95% efficiency at light loads via pulse-frequency modulation. When pulled high, it forces fixed-frequency PWM (1.25 MHz), improving EMI filterability but reducing light-load efficiency by ~5–10 percentage points. This trade-off allows designers to prioritize battery life (MODE = low) or noise immunity (MODE = high) based on system requirements.
Can the TPS62040DRCRG4 operate with input voltages below 2.5 V?
No - the absolute minimum input voltage for functional operation of the TPS62040DRCRG4 is 2.5 V, as specified in the Recommended Operating Conditions table. Input voltages below this threshold trigger undervoltage lockout (UVLO), disabling switching. The UVLO threshold is typically 2.3 V with hysteresis, ensuring reliable startup only when VIN exceeds 2.5 V.
What is the purpose of the PowerPad™ thermal pad on the TPS62040DRCRG4 package?
The exposed PowerPad™ on the TPS62040DRCRG4's QFN package must be soldered to a PCB ground plane with thermal vias to achieve rated thermal performance. It reduces junction-to-ambient thermal resistance to 48.7°C/W (vs. >60°C/W without vias), enabling reliable 1.2-A continuous operation at 70°C ambient. Failure to connect the PowerPad results in excessive junction temperature and premature thermal shutdown.
TPS62040DRCRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.7V
- Voltage - Output (Max):
- 6V
- 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)
TPS62040DRCRG4 FAQ
1.How can I place an order for TPS62040DRCRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62040DRCRG4 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 TPS62040DRCRG4 reliable?
The price and inventory of TPS62040DRCRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62040DRCRG4 is usually 5 days.
3.What payment methods are accepted for TPS62040DRCRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62040DRCRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62040DRCRG4?
TPS62040DRCRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62040DRCRG4 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 TPS62040DRCRG4?
For technical support, including TPS62040DRCRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62040DRCRG4 requirements.
6.How does Aetrix verify that TPS62040DRCRG4 is sourced from the original manufacturer or authorized distributors?
All TPS62040DRCRG4 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 TPS62040DRCRG4 meets industry standards.
7.What is the process for return or replacement of TPS62040DRCRG4?
All TPS62040DRCRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62040DRCRG4, 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 TPS62040DRCRG4 part is unused and in its original packaging.
Return procedure for TPS62040DRCRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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