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Texas Instruments TPS62056DGSG4
- Part No.:
- TPS62056DGSG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62056DGSG4.pdf
- Description:
- IC REG BUCK 3.3V 800MA 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:318
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Product details
Overview
TPS62056DGSG4 from Texas Instruments is a fixed-output 3.3 V, 800-mA synchronous step-down DC-DC converter in a 10-pin VSSOP (DGS) package, featuring 850 kHz fixed-frequency PWM operation, 12 µA typical quiescent current, and integrated P/N-channel MOSFETs - designed for Li-ion or multi-cell alkaline/NiMH-powered portable electronics requiring stable low-noise regulation.
For engineers reviewing the TPS62056DGSG4 datasheet, TPS62056DGSG4 pinout, TPS62056DGSG4 application, or TPS62056DGSG4 equivalent, key selection considerations include its 2.7–10 V input range, ±3% output voltage tolerance at 3.3 V, power-good and low-battery monitoring outputs, SYNC-controlled PFM/PWM mode switching, and thermal shutdown protection across –40°C to 85°C operation.
Technical Context
The TPS62056DGSG4 implements voltage-mode PWM control with input voltage feed-forward for fast line/load transient response and uses internal 700–1300 kΩ feedback divider for fixed 3.3 V output. It operates in forced PWM mode when SYNC ≥1.5 V (enabling low-noise operation), or enters PFM at light loads when SYNC = GND (achieving 93% efficiency at 200 mA with 3.6 V input).
Its functional architecture integrates undervoltage lockout (1.6 V threshold), soft-start (1 ms typical with 22 µF output cap), overcurrent protection (1000–1400 mA limit), and thermal shutdown (145°C). The PG and LBO pins are open-drain with 0.3 V max VOL at 1 mA sink, and LBI trip is fixed at 1.21 V ±1.5% for battery monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±3% (verified for VI = 3.75–10 V, IO ≤ 600 mA) |
| Max Output Current | 800 mA continuous (thermal-limited; 1200 mA peak current limit) |
| Input Voltage Range | 2.7 V to 10 V (supports 1–2 cell Li-ion or 3–5 cell alkaline/NiMH) |
| Quiescent Current | 12 µA typical (PWM/PFM mode); <2 µA in shutdown |
| Switching Frequency | 850 kHz nominal (600–1000 kHz over temp); synchronizable to 600–1200 kHz |
| Efficiency | 93% at VI = 5 V, VO = 3.3 V, IO = 200 mA |
| Thermal Shutdown | 145°C junction temperature; automatic recovery on cooldown |
Pinout & Package
TPS62056DGSG4 is housed in a 10-pin VSSOP (DGS) package measuring 3.00 mm × 3.00 mm with exposed thermal pad (PGND-connected), optimized for high-density portable PCB layouts and thermal performance (RθJA = 154°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power input | Accepts 2.7–10 V supply; connects to input capacitor and bypass network |
| LBO (Pin 2) | Open-drain output | Asserts low when battery voltage falls below 1.21 V; requires external pullup |
| GND (Pin 3) | Analog ground | Reference for FB, EN, SYNC, LBI; must be star-connected to PGND near IC |
| PG (Pin 4) | Open-drain output | Indicates valid 3.3 V output (>95% nominal); floats high when enabled and in regulation |
| FB (Pin 5) | Feedback input | Internally tied to fixed 3.3 V divider; unused in TPS62056DGSG4 (not adjustable) |
| LBI (Pin 6) | Low-battery sense input | Monitors external battery via resistive divider; trip at 1.21 V ±1.5% |
| SYNC (Pin 7) | Mode control input | High ≥1.5 V forces fixed PWM; low ≤0.3 V enables PFM for light-load efficiency |
| EN (Pin 8) | Enable input | Active-high logic; <2 µA shutdown current; supports pushbutton sequencing |
| SW (Pin 9) | Switch node | Drives external 10 µH inductor; connects to drain of internal P-MOSFET and source of N-MOSFET |
| PGND (Pin 10) | Power ground | Return path for high-current switch loop; must be low-inductance connection to VIN capacitor ground |
Key Features
| Feature | Design Value |
|---|---|
| Integrated P/N-channel MOSFETs | Eliminates external switches; reduces BOM count and layout area for compact 3.3 V point-of-load conversion |
| 100% duty cycle capability | Enables ultra-low dropout operation down to VI ≈ VO + RDS(ON)·IO, critical for battery end-of-life support |
| Internal soft-start (1 ms typical) | Prevents input voltage sag during startup with 22 µF output cap and 200 mA load |
| Power-good (PG) and low-battery (LBO) outputs | Provides system-level monitoring without external supervisors; open-drain for flexible rail interfacing |
| Thermal and overcurrent protection | Ensures robust operation under overload or poor heatsinking; auto-recovery after fault clearance |
Applications
| Cellular Phones | Digital Cameras |
|---|---|
Use Scenario: Powering baseband processor core and I/O rails from single-cell Li-ion battery (3.0–4.2 V). IC Role / Device Role / Timing Role: Primary 3.3 V synchronous buck regulator delivering up to 800 mA with dynamic load transient response. Use Value: Maintains regulation through battery discharge curve while sustaining >93% efficiency at 200 mA, extending talk time. | Use Scenario: Supplying image sensor interface and memory controller in compact handheld camera. IC Role / Device Role / Timing Role: Fixed 3.3 V step-down converter with low-noise forced-PWM mode enabled via SYNC pin. Use Value: Eliminates switching noise interference with analog imaging circuitry using fixed 850 kHz operation. |
| Handheld PCs / PDAs | Low-Power DSP Supplies |
Use Scenario: Generating 3.3 V for USB PHY, display driver, and flash memory in organizer-class devices. IC Role / Device Role / Timing Role: High-efficiency DC-DC converter supporting both active (PWM) and standby (PFM) modes via SYNC control. Use Value: Achieves 12 µA quiescent current in PFM mode, minimizing battery drain during idle periods. | Use Scenario: Providing clean, regulated 3.3 V to TI C5000/C6000-series DSP cores in portable audio analyzers. IC Role / Device Role / Timing Role: Synchronous buck with thermal shutdown and PG signaling for safe DSP reset sequencing. Use Value: Guarantees reliable power-up and brownout detection via PG and UVLO, preventing DSP corruption. |
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 |
|---|---|---|---|
| TPS62052DGSG4 | Identical 10-pin VSSOP package and 1.5 V fixed output; same 800 mA rating, 850 kHz frequency, and feature set | Used where 1.5 V rail required instead of 3.3 V; shares identical layout and thermal design | Select when system requires 1.5 V core voltage with identical efficiency and footprint |
| TPS62054DGSG4 | Same package, 1.8 V fixed output, identical electrical specs except output voltage and internal divider resistance | Targets 1.8 V I/O or memory interfaces; pin-compatible but not functionally interchangeable | Choose for 1.8 V applications needing same thermal profile and enable/sync functionality |
Compared with TPS62056DGSG4, TPS62052DGSG4 and TPS62054DGSG4 share identical package, pinout, thermal behavior, and control features - differing only in fixed output voltage (1.5 V and 1.8 V respectively) and internal feedback divider values, enabling drop-in layout reuse across multiple voltage rails in multi-rail portable designs.
Availability
TPS62056DGSG4 is available at Aetrix Electronics and suitable for cellular phones, digital cameras, handheld PCs, and low-power DSP supplies requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62056DGSG4 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 and battery-powered systems.
The TPS6205x product line was engineered specifically for space-constrained, battery-operated applications demanding high light-load efficiency, integrated power switches, and comprehensive system monitoring - including PG, LBO, and thermal protection - in minimal footprint.
FAQ
What is the guaranteed output voltage accuracy of the TPS62056DGSG4?
The TPS62056DGSG4 delivers a fixed 3.3 V output with ±3% tolerance over full operating conditions: input voltage 3.75–10 V, output current 0–600 mA, and temperature –40°C to 85°C. This specification is validated per TI's SLVS432F datasheet Section 8.5, and reflects worst-case variation including line, load, and temperature effects - not just initial calibration.
Does the TPS62056DGSG4 require external feedback resistors?
No, the TPS62056DGSG4 does not require external feedback resistors. It integrates an internal resistor divider (700–1300 kΩ total) to set the fixed 3.3 V output. The FB pin is internally connected and must not be externally biased; doing so may disrupt regulation or damage the device. This distinguishes it from the adjustable TPS62050/TPS62051 variants.
How does the SYNC pin affect efficiency and noise performance in the TPS62056DGSG4?
When SYNC is pulled high (≥1.5 V), the TPS62056DGSG4 operates in forced fixed-frequency PWM mode - ensuring constant 850 kHz switching for predictable EMI filtering but reducing light-load efficiency. When SYNC is pulled low (≤0.3 V), it enters power-save PFM mode, dropping frequency and quiescent current to 12 µA typical, maximizing efficiency below ~200 mA - at the cost of variable-frequency noise.
Can the TPS62056DGSG4 operate with input voltage below 2.7 V?
No, the TPS62056DGSG4 has a minimum recommended input voltage of 2.7 V per Section 8.3 of the datasheet. Below this, undervoltage lockout (UVLO) activates at 1.6 V threshold, disabling switching. While absolute maximum rating allows 11 V, operation below 2.7 V is not characterized or guaranteed - regulation, efficiency, and PG/LBO functionality are not assured.
What thermal management guidance applies to the TPS62056DGSG4 in high-current operation?
The TPS62056DGSG4 has RθJA = 154°C/W in the DGS package. At 800 mA output with 5 V input, power dissipation is ~0.32 W - resulting in ~50°C junction rise above ambient. To maintain safe operation below 125°C TJ, ensure adequate copper area on PGND, use thermal vias under the exposed pad, and avoid enclosing the IC in sealed enclosures without airflow.
TPS62056DGSG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 800mA
- Frequency - Switching:
- 850kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSSOP
TPS62056DGSG4 FAQ
1.How can I place an order for TPS62056DGSG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62056DGSG4 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 TPS62056DGSG4 reliable?
The price and inventory of TPS62056DGSG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62056DGSG4 is usually 5 days.
3.What payment methods are accepted for TPS62056DGSG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62056DGSG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62056DGSG4?
TPS62056DGSG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62056DGSG4 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 TPS62056DGSG4?
For technical support, including TPS62056DGSG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62056DGSG4 requirements.
6.How does Aetrix verify that TPS62056DGSG4 is sourced from the original manufacturer or authorized distributors?
All TPS62056DGSG4 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 TPS62056DGSG4 meets industry standards.
7.What is the process for return or replacement of TPS62056DGSG4?
All TPS62056DGSG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62056DGSG4, 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 TPS62056DGSG4 part is unused and in its original packaging.
Return procedure for TPS62056DGSG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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