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Texas Instruments TPS62043DRCR
- Part No.:
- TPS62043DRCR
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS62043DRCR.pdf
- Description:
- IC REG BUCK 1.6V 1.2A 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,218
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Product details
Overview
TPS62043DRCR from Texas Instruments is a fixed-output 1.6 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. It supports single-cell Li-ion or 3-cell NiMH/NiCd battery inputs (2.5–6.0 V) and delivers regulated power to low-voltage DSPs and processors in portable computing and communications devices.
For engineers reviewing the TPS62043DRCR datasheet, TPS62043DRCR pinout, TPS62043DRCR application, or TPS62043DRCR equivalent, key selection considerations include its fixed 1.6 V output, integrated P/N-channel MOSFETs, power save mode for light-load efficiency, thermal shutdown protection, and compatibility with 22 µF ceramic input/output capacitors and 6.2 µH inductors.
Technical Context
The TPS62043DRCR implements a voltage-mode synchronous buck topology with input voltage feed-forward control, enabling fast line/load transient response and stable operation with small ceramic capacitors. Its internal 0.5 V reference and fixed feedback network set the 1.6 V output without external resistors.
It operates in PWM mode at medium-to-heavy loads (1.25 MHz typical) and automatically transitions to pulse-frequency modulation (PFM) power save mode below ~100 mA load, reducing quiescent current to 18 µA while maintaining ±3% output accuracy across temperature and line variations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 1.6 V ±3% over −40°C to 85°C, 2.5–6.0 V input, 0–1.2 A load |
| Switching frequency | 1.25 MHz nominal in PWM mode; drops to 625 kHz in power save mode |
| Efficiency | Up to 95% at 600 mA, 3.6 V input, 1.6 V output - enables extended battery runtime |
| Quiescent current | 18 µA typical in power save mode - critical for always-on subsystems |
| Input voltage range | 2.5 V to 6.0 V - supports single Li-ion (2.7–4.2 V) and 3-cell NiMH (3.6 V nominal) |
| Thermal protection | Thermal shutdown at 150°C junction temperature with automatic recovery |
| Short-circuit response | Reduces switching frequency and current limit to 50% when output falls below 50% of nominal |
Pinout & Package
TPS62043DRCR uses a thermally enhanced 10-pin QFN 3×3 mm package with exposed PowerPAD™ (pin 11, connected to PGND). The package supports high-power density layouts with low thermal resistance (48.7°C/W) when soldered with thermal vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 EN | Enable input | Active-high logic: tie to VIN to enable; pull to GND for <1 µA shutdown current |
| 2,3 VIN | Power input | Dual input pins reduce trace inductance and improve high-frequency decoupling |
| 4 GND | Analog ground | Reference for FB and MODE; must be star-connected to PGND near PowerPAD™ |
| 5 FB | Feedback input | Internally tied to 1.6 V output - no external resistor divider required |
| 6 MODE | Operating mode control | Pull low for auto PWM/PFM; pull high for forced PWM only (fixed 1.25 MHz) |
| 7,8 SW | Switch node | Connects to inductor; high dv/dt node requiring minimal trace area and tight layout |
| 9,10 PGND | Power ground | High-current return path for MOSFETs; must be solidly connected to PowerPAD™ |
Key Features
| Feature | Design Value |
|---|---|
| 100% duty cycle operation | Maintains regulation down to VI ≈ VO + IO × rDS(on), extending usable battery range |
| Dynamic voltage positioning | Output held ~0.8% above 1.6 V in light load, providing headroom for 1.2 A transients |
| Internal softstart | Digital ramp limits inrush current; eliminates input voltage sag during startup |
| Synchronous rectification | Integrated N-channel MOSFET replaces diode - eliminates reverse recovery loss |
| Thermal and short-circuit protection | Auto-recovering shutdown prevents damage under overload or poor heatsinking |
Applications
| Smartphone Baseband Power | USB-Powered Modem Core Supply |
|---|---|
Use Scenario: Powering ARM-based baseband processors in dual-mode smartphones with Li-ion battery input. IC Role / Device Role / Timing Role: Primary 1.6 V core regulator delivering up to 1.2 A with dynamic voltage positioning for burst-mode processing. Use Value: 95% efficiency at 600 mA extends talk time; 18 µA quiescent current minimizes standby drain. |
Use Scenario: Regulating 5 V USB input to stable 1.6 V for DSL modem PHY and controller ICs. IC Role / Device Role / Timing Role: Input-stage buck converter enabling compact, fanless modem design with low EMI. Use Value: 1.25 MHz switching allows small 6.2 µH inductor and 22 µF ceramic caps; MODE pin enables noise-sensitive fixed-frequency operation. |
| Notebook Subsystem Rail | PDA Memory Interface Supply |
Use Scenario: Generating 1.6 V for DDR memory I/O buffers in ultra-thin notebooks powered by 3-cell NiMH. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator with fast transient response to memory access bursts. Use Value: 100% duty cycle maintains regulation as battery discharges to 2.5 V; thermal shutdown protects against enclosure overheating. |
Use Scenario: Supplying 1.6 V to NAND flash and SRAM in handheld PDAs with limited PCB area. IC Role / Device Role / Timing Role: Compact QFN solution replacing discrete buck controllers and MOSFETs. Use Value: 3×3 mm footprint saves >40% board space vs. MSOP; PowerPAD™ enables 1.13 W power handling at 70°C ambient. |
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 |
|---|---|---|---|
| TPS62043DGQ | Same electrical specs, but in 10-pin MSOP-PowerPAD™ (4.4×3 mm); higher RθJA (60°C/W) | Less thermal performance; suitable where board height is constrained over thermal demand | Select DGQ only if MSOP footprint is required and power dissipation stays ≤667 mW at 85°C ambient |
| TPS62063DRVR | 1.6 V fixed, 600 mA, 2.5–6 V input, 2.25 MHz switching; smaller 6-pin SOT-23 package | Lower current rating and higher frequency - optimized for space-constrained, lower-power apps | Choose DRVR only for sub-600 mA loads where 3×3 mm QFN is unavailable or cost-sensitive |
Compared with TPS62043DGQ, TPS62043DRCR offers 23% lower thermal resistance and 0.5 mm² smaller footprint; versus TPS62063DRVR, it delivers double the output current and trades 1 MHz higher frequency for better light-load efficiency and lower EMI filtering burden.
Availability
TPS62043DRCR is available at Aetrix Electronics and suitable for smartphone baseband power, USB-powered modem core supply, notebook subsystem rails, PDA memory interface supply, and xDSL line card applications requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for TPS62043DRCR 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 for portable electronics.
The TPS6204x product line was designed specifically for battery-powered portable systems requiring high efficiency across wide load ranges, minimal external components, and robust protection in space- and thermal-constrained environments.
FAQ
What is the output voltage tolerance of the TPS62043DRCR over temperature and load?
The TPS62043DRCR maintains a fixed 1.6 V output with ±3% accuracy across −40°C to 85°C ambient temperature and 0–1.2 A load current, as specified in the Electrical Characteristics table under "Fixed output voltage" for TPS62043. This tolerance includes line regulation, load regulation, and reference voltage drift - no external trimming is required.
Can the TPS62043DRCR operate with input voltage below 2.5 V?
No. The TPS62043DRCR has an absolute minimum input voltage of 2.5 V per Recommended Operating Conditions, and its undervoltage lockout (UVLO) activates below 1.5–2.3 V. Operation below 2.5 V risks failure to regulate or erratic behavior; for sub-2.5 V inputs, consider TI's TPS621xx or TPS628xx families.
Does the TPS62043DRCR require external compensation components?
No. The TPS62043DRCR features internal compensation optimized for standard 6.2 µH inductors and 22 µF ceramic output capacitors. No external RC networks or compensation pins are needed - simplifying layout and reducing BOM count while ensuring stability across all operating conditions.
How does the MODE pin affect efficiency and noise in the TPS62043DRCR?
When MODE is pulled low, the TPS62043DRCR enters auto PWM/PFM mode: high efficiency (>90%) at light loads due to PFM, but variable frequency may complicate EMI filtering. When MODE is pulled high, it forces fixed 1.25 MHz PWM - improving spectral predictability at the cost of ~5–10% lower light-load efficiency.
Is the PowerPAD™ on the TPS62043DRCR electrically isolated or connected internally?
The PowerPAD™ on the TPS62043DRCR is not electrically isolated - it is internally connected to PGND (pins 9 and 10). Per TI's datasheet, it must be soldered directly to a PCB ground plane with thermal vias to achieve the rated 48.7°C/W thermal resistance and prevent thermal shutdown under full 1.2 A load.
TPS62043DRCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- 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):
- 1.6V
- 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)
TPS62043DRCR FAQ
1.How can I place an order for TPS62043DRCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62043DRCR 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 TPS62043DRCR reliable?
The price and inventory of TPS62043DRCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62043DRCR is usually 5 days.
3.What payment methods are accepted for TPS62043DRCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62043DRCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62043DRCR?
TPS62043DRCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62043DRCR 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 TPS62043DRCR?
For technical support, including TPS62043DRCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62043DRCR requirements.
6.How does Aetrix verify that TPS62043DRCR is sourced from the original manufacturer or authorized distributors?
All TPS62043DRCR 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 TPS62043DRCR meets industry standards.
7.What is the process for return or replacement of TPS62043DRCR?
All TPS62043DRCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62043DRCR, 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 TPS62043DRCR part is unused and in its original packaging.
Return procedure for TPS62043DRCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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