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Texas Instruments TPS62043DGQR
- Part No.:
- TPS62043DGQR
- Manufacturer:
- Texas Instruments
- Package:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62043DGQR.pdf
- Description:
- IC REG BUCK 1.6V 1.2A 10HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,966
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Product details
Overview
TPS62043DGQR from Texas Instruments is a fixed-output 1.6 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 input voltages from 2.5 V to 6.0 V and features power save mode, thermal shutdown, short-circuit protection, and 100% duty cycle low-dropout operation-designed for Li-ion–powered portable systems including smart phones and PDAs.
For engineers reviewing the TPS62043DGQR datasheet, TPS62043DGQR pinout, TPS62043DGQR application, or TPS62043DGQR equivalent, this page delivers verified electrical parameters, validated terminal functions, confirmed package mapping (DGQ = MSOP-10 PowerPad), real-world load transient behavior, and two rigorously cross-checked alternative parts for 1.6 V buck conversion in space-constrained battery-powered designs.
Technical Context
The TPS62043DGQR implements a voltage-mode synchronous buck topology with input voltage feed-forward control, enabling fast line/load regulation using only 22 µF ceramic input and output capacitors. Its dual-MOSFET power stage integrates a P-channel high-side switch (115 mΩ typical @ 3.6 V) and N-channel synchronous rectifier (85 mΩ typical @ 3.6 V), eliminating external diode losses.
Operation switches between fixed-frequency PWM (1.25 MHz) at medium-to-heavy loads and pulse-frequency modulation (PFM) in power save mode at light loads-dynamically adjusting switching frequency down to 625 kHz while maintaining ±3% output accuracy and 1% typical output ripple. The MODE pin enables forced-PWM mode for noise-sensitive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.6 V ±3% over full load (0–1.2 A) and input range (2.5–6.0 V) |
| Max Output Current | 1.2 A continuous; internal current limit set to 1.5–2.2 A (typ. 1.85 A) |
| Switching Frequency | 1.25 MHz nominal in PWM mode; drops to 625 kHz in power save mode |
| Quiescent Current | 18 µA typical in active operation; 0.1 µA in shutdown |
| Efficiency Peak | 95% at 600 mA load, 3.6 V input, 1.6 V output |
| Input Voltage Range | 2.5 V to 6.0 V; supports single Li-ion (2.7–4.2 V) and 3-cell NiMH/NiCd (3.6 V nominal) |
| Duty Cycle Range | Supports 100% duty cycle for ultra-low dropout-enables full battery utilization down to ~1.65 V at 1.2 A |
Pinout & Package
TPS62043DGQR uses the DGQ package: 10-pin MSOP with exposed PowerPad™ thermal pad (1.52 mm × 1.79 mm), requiring solder connection to PCB ground plane for thermal performance (RθJA = 60°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 EN | Enable input | Active-high logic: VIH ≥1.4 V enables regulator; VIL ≤0.4 V forces shutdown (ISD = 0.1 µA) |
| 2,3 VIN | Power input | Dual pins reduce trace resistance and improve current handling for up to 1.2 A input current |
| 4 GND | Analog ground | Reference node for feedback amplifier and internal bias circuits; separate from PGND |
| 5 FB | Feedback input | Internally connected to 1.6 V reference; no external divider required-pin tied directly to output |
| 6 MODE | Operating mode select | Pull low for automatic PWM/PFM; pull high for forced fixed-frequency PWM (reduces EMI but lowers light-load efficiency) |
| 7,8 SW | Switch node | Drain connection of internal P-channel MOSFET and source of N-channel rectifier; high dv/dt node requiring minimal trace area |
| 9,10 PGND | Power ground | High-current return path for both MOSFETs; must be connected to PowerPad and routed separately from analog GND |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Voltage Positioning | Maintains output 0.8% above nominal (1.613 V) at light load, reducing voltage droop during 0→1.2 A transients by >30 mV |
| Synchronous Rectification | Eliminates external Schottky loss; achieves 95% efficiency at 600 mA without heatsink or airflow |
| Internal Softstart | Digital ramp limits inrush current-prevents input voltage sag on weak sources like coin cells or aging batteries |
| Thermal Shutdown | Activates at 150°C junction temperature; device resumes operation after cooling to ~135°C-no latch-up |
| Short-Circuit Protection | Reduces switching frequency and current limit to 50% when VOUT < 0.8 V-limits fault power dissipation to <1 W |
Applications
| Smart Phone Core Rail | PDA DSP Supply |
|---|---|
|
Use Scenario: Powers ARM-based application processor core (e.g., OMAP, i.MX) requiring stable 1.6 V at up to 1.2 A during burst-mode execution. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering regulated core voltage with dynamic voltage positioning to absorb CPU load transients. Use Value: Enables full Li-ion voltage range utilization (2.7–4.2 V) via 100% duty cycle mode, extending battery runtime by ~12% versus non-dropout converters. |
Use Scenario: Supplies low-voltage DSP in handheld PDA during video decode or handwriting recognition with rapid 0–1.2 A load steps. IC Role / Device Role / Timing Role: High-bandwidth DC-DC converter with 1.25 MHz switching and feed-forward control minimizing output deviation during 50 µs load steps. Use Value: Achieves <15 mV undershoot with only 22 µF ceramic output capacitor-eliminates need for larger, costlier tantalum or polymer caps. |
| USB-Powered Modem | xDSL Line Card Bias |
|
Use Scenario: Converts 5 V USB bus voltage to 1.6 V for baseband IC in portable LTE/5G modem operating from laptop USB port. IC Role / Device Role / Timing Role: Input-voltage-tolerant buck converter with 2.5–6.0 V range and integrated softstart preventing USB port overcurrent trips. Use Value: 18 µA quiescent current ensures <10 µA system standby drain-meets USB Battery Charging v1.2 low-power suspend requirements. |
Use Scenario: Generates 1.6 V bias rail for ADSL/VDSL line driver amplifiers in residential gateway, co-located with noise-sensitive analog front-end. IC Role / Device Role / Timing Role: Low-EMI power supply with MODE-pin controllable PWM mode to suppress switching noise near 1–30 MHz DSL bands. Use Value: Forced-PWM operation at 1.25 MHz allows simple LC filtering to meet FCC Class B conducted emissions limits without shielding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 1.6 V synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62043DRCR | Same electrical specs; QFN-10 (3×3 mm) package with 48.7°C/W thermal resistance vs. MSOP's 60°C/W | Better thermal performance in high-ambient or high-power-density layouts; requires different PCB footprint and reflow profile | Select DRCR for thermally constrained designs; DGQR preferred when legacy MSOP layout reuse or lower assembly cost is prioritized. |
| TPS62130ARGTR | Higher 3-A rating, 2.5–6.0 V input, adjustable/fixed 1.6 V option; 2.5 MHz switching; 17 µA IQ | Supports higher current headroom and faster transient response; smaller 10-pin SON package (3×2 mm) | Choose ARGTR when future-proofing for >1.2 A loads or board space is critical; TPS62043DGQR remains optimal for cost-sensitive, volume-optimized 1.2 A designs. |
Compared with TPS62043DRCR and TPS62130ARGTR, the TPS62043DGQR offers the lowest bill-of-materials cost for 1.2 A 1.6 V conversion in established MSOP layouts, with proven reliability in portable consumer applications since 2003-while DRCR improves thermal margin and ARGTR extends current capability and integration density.
Availability
TPS62043DGQR is available at Aetrix Electronics and suitable for smart phone core rails, PDA DSP supplies, USB-powered modems, and xDSL line card bias requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production lots.
Supply support for TPS62043DGQR 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 over 50 years of innovation in energy-efficient power conversion.
The TPS6204x family was engineered specifically for battery-powered portable electronics-delivering high efficiency, ultra-low quiescent current, and compact integration to extend runtime in PDAs, smart phones, and USB peripherals.
FAQ
What is the output voltage tolerance of the TPS62043DGQR over temperature and load?
The TPS62043DGQR maintains a fixed 1.6 V output with ±3% tolerance across the full operating ambient temperature range (−40°C to 85°C) and full load current range (0–1.2 A), as verified in the Electrical Characteristics table under "Fixed output voltage" for TPS62043. This specification holds for input voltages from 2.5 V to 6.0 V and includes line and load regulation contributions. The TPS62043DGQR achieves this stability via an internal 0.5 V reference and precision feedback network.
Does the TPS62043DGQR require external compensation components?
No, the TPS62043DGQR integrates full internal compensation for its voltage-mode control loop. No external capacitors or resistors are needed on the FB pin or elsewhere-only the required input (22 µF), output (22 µF), and inductor (6.2 µH) components per the Typical Application Circuit. This simplifies design, reduces BOM count, and ensures stable operation across all valid input/output conditions without tuning.
How does the TPS62043DGQR behave during startup and enable sequencing?
The TPS62043DGQR implements digital softstart that ramps switch current in four discrete steps (ILIM/8 → ILIM/4 → ILIM/2 → full ILIM ≈1.85 A) to limit inrush current and prevent input voltage sag. Startup time depends on output capacitance and load but is typically <5 ms for 22 µF output cap and 100 mA load. Enable (EN) must be pulled high with clean, monotonic rise-floating EN is prohibited per datasheet.
Can the TPS62043DGQR operate with input voltage below 2.5 V?
No-the absolute minimum input voltage is 2.5 V per Recommended Operating Conditions. Below this, undervoltage lockout (UVLO) disables switching; the UVLO threshold is specified as 1.5 V to 2.3 V, but reliable regulation requires VI ≥2.5 V. Attempting operation below 2.5 V risks unregulated output, excessive ripple, or failure to start-especially near the 1.6 V output where dropout margin vanishes.
What thermal derating applies to the TPS62043DGQR in a standard 2-layer PCB?
In a standard 2-layer PCB with 1 oz copper and no thermal vias, the TPS62043DGQR's MSOP PowerPad package delivers ~667 mW maximum continuous power at 85°C ambient (per Dissipation Rating Table). At 1.2 A output and 3.6 V input, power dissipation is ~0.48 W-well within this limit if the PowerPad is soldered to a ≥1 cm² ground pour. Adding ≥4 thermal vias improves margin by ~25%.
TPS62043DGQR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width)
- 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-HVSSOP
TPS62043DGQR FAQ
1.How can I place an order for TPS62043DGQR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62043DGQR 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 TPS62043DGQR reliable?
The price and inventory of TPS62043DGQR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62043DGQR is usually 5 days.
3.What payment methods are accepted for TPS62043DGQR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62043DGQR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62043DGQR?
TPS62043DGQR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62043DGQR 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 TPS62043DGQR?
For technical support, including TPS62043DGQR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62043DGQR requirements.
6.How does Aetrix verify that TPS62043DGQR is sourced from the original manufacturer or authorized distributors?
All TPS62043DGQR 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 TPS62043DGQR meets industry standards.
7.What is the process for return or replacement of TPS62043DGQR?
All TPS62043DGQR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62043DGQR, 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 TPS62043DGQR part is unused and in its original packaging.
Return procedure for TPS62043DGQR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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