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Texas Instruments TPS62056DGSRG4
- Part No.:
- TPS62056DGSRG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62056DGSRG4.pdf
- Description:
- IC REG BUCK 3.3V 800MA 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,791
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Product details
Overview
TPS62056DGSRG4 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-powered portable systems requiring high efficiency across light-to-heavy loads.
For engineers reviewing the TPS62056DGSRG4 datasheet, TPS62056DGSRG4 pinout, TPS62056DGSRG4 application, or TPS62056DGSRG4 equivalent, key selection considerations include its 3.3 V fixed output with ±3% tolerance, 2.7–10 V input range, SYNC-controlled PFM/PWM mode switching, LBO/PG monitoring capability, and thermal shutdown protection at 145°C.
Technical Context
The TPS62056DGSRG4 implements voltage-mode control with input-voltage feedforward for fast line/load transient response and stable regulation using small ceramic capacitors. Its internal 850 kHz oscillator supports synchronization to external clocks from 600 kHz to 1.2 MHz, disabling power-save mode when SYNC is high to enforce fixed-frequency PWM operation.
It integrates dual MOSFET switches (P-channel RDS(on) = 400–650 mΩ at VIN ≥ 5.4 V; N-channel RDS(on) = 300–450 mΩ), soft-start limiting inrush current, and a 0.5 V internal reference for feedback comparison - with PG and LBO open-drain outputs requiring external pullups and active only when EN is high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±3% over 0–600 mA load and 3.75–10 V input - ensures stable rail for MCU I/O or RF front-end biasing. |
| Max Output Current | 800 mA continuous - supports moderate-power digital subsystems without external current boosting. |
| Input Voltage Range | 2.7 V to 10 V - compatible with single/dual Li-ion, 3–5-cell NiMH/alkaline, or industrial 5–9 V supplies. |
| Quiescent Current | 12 µA typical (SYNC = GND) - enables >1-year battery life in always-on sensor nodes at light load. |
| Switching Frequency | 850 kHz nominal (600–1000 kHz over temp) - allows use of compact 10 µH inductors and 22 µF ceramic output caps. |
| Efficiency Peak | 93% at 300 mA, VIN = 5 V, VOUT = 3.3 V - minimizes thermal rise in space-constrained handheld enclosures. |
| Shutdown Current | 1.5 µA typical - preserves battery charge during system sleep or standby modes. |
| Thermal Shutdown | 145°C junction - protects against sustained overload or poor PCB heat sinking without external circuitry. |
Pinout & Package
Package: 10-pin VSSOP (DGS), 3.00 mm × 3.00 mm body size, exposed pad optional per TI design guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (1) | Power input | Accepts 2.7–10 V supply; requires local 10 µF ceramic decoupling near pin. |
| LBO (2) | Open-drain low-battery output | Asserts low when LBI < 1.21 V ±1.5%; requires external pullup to VOUT or ≤6 V rail. |
| GND (3) | Analog ground | Reference for FB, PG, LBI; must be star-connected to PGND for noise immunity. |
| PG (4) | Open-drain power-good output | Floats high when VOUT > 95% nominal; valid after 250 µs enable delay; needs pullup. |
| FB (5) | Feedback input | Internally tied to 3.3 V divider (700–1300 kΩ); unused on fixed-output TPS62056DGSRG4. |
| LBI (6) | Low-battery comparator input | Monitors external resistive divider; trip point 1.21 V; hysteresis 15 mV. |
| SYNC (7) | Mode control input | High (>1.5 V): forced PWM; Low (<0.3 V): PFM/PWM auto-switching; floating = internal oscillator. |
| EN (8) | Enable input | Active-high logic; <0.3 V disables device, reducing IQ to <2 µA; supports pushbutton sequencing. |
| SW (9) | Switch node | Connects to inductor; carries high di/dt; requires tight layout and Kelvin connection to PGND. |
| PGND (10) | Power ground | Return path for SW and internal MOSFETs; must be separate copper pour from AGND, joined at single point. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated P/N-MOSFETs | Eliminates external switches and reduces BOM count; RDS(on) optimized for 2.7–10 V input range. |
| 100% Duty Cycle Operation | Enables ultra-low dropout (e.g., 3.3 V out from 3.6 V in), critical for end-of-battery-life operation. |
| Programmable Power-Save Mode | SYNC pin selects between high-efficiency PFM (light load) and low-noise fixed PWM (heavy load). |
| Internal Soft-Start | Staged 200/400/800 mA current ramp limits inrush; achieves 1 ms start-up with 22 µF COUT. |
| Dual Monitoring Outputs | PG confirms regulation stability; LBO provides early battery depletion warning - both open-drain for flexible interfacing. |
| Overtemperature Protection | Auto-recovery thermal shutdown at 145°C prevents damage during sustained overload or poor heatsinking. |
Applications
| Cellular Handsets | Digital Cameras |
|---|---|
Use Scenario: Main 3.3 V rail for baseband processor, display interface, and audio codec in GSM/UMTS feature phones. IC Role / Device Role / Timing Role: Primary step-down regulator delivering regulated 3.3 V from 3.7 V Li-ion battery with dynamic load steps up to 600 mA. Use Value: 93% peak efficiency and 12 µA quiescent current extend talk time and standby duration without compromising RF noise performance. | Use Scenario: Powering image sensor, ISP, and SD card interface in compact consumer cameras with dual-cell alkaline supply. IC Role / Device Role / Timing Role: Fixed 3.3 V source enabling fast wake-from-sleep and burst-mode capture with minimal voltage droop. Use Value: 100% duty cycle operation sustains output during battery voltage decay to 3.4 V, avoiding premature shutdown. |
| Handheld Medical Devices | Industrial Data Loggers |
Use Scenario: Supplying microcontroller, BLE radio, and analog front-end in portable ECG or pulse oximeter units. IC Role / Device Role / Timing Role: Always-on 3.3 V regulator supporting low-power sleep states and rapid sensor activation bursts. Use Value: 1.5 µA shutdown current and programmable PFM mode enable multi-year battery life in sealed enclosures. | Use Scenario: Powering ARM Cortex-M4 MCU, LoRa transceiver, and EEPROM in remote environmental monitors. IC Role / Device Role / Timing Role: Primary DC-DC stage converting 6–9 V industrial supply to clean 3.3 V for mixed-signal operation. Use Value: PG output validates rail integrity before firmware boot; LBO triggers graceful data save prior to brownout. |
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 |
|---|---|---|---|
| TPS62052DGSR | Identical 1.5 V fixed output, same DGS package and pinout; shares all electrical specs except VOUT. | Used where 1.5 V logic or core voltage required instead of 3.3 V I/O rail. | Select TPS62052DGSR only when system architecture mandates 1.5 V output; not a drop-in replacement for TPS62056DGSRG4. |
| TPS62067QDSGRQ1 | Automotive-grade (AEC-Q100), 3.3 V fixed, 1.2 MHz switching, 2.7–6 V input, 600 mA max - smaller 8-pin WSON package. | Suitable for automotive infotainment or ADAS modules needing higher frequency and qualification. | Choose TPS62067QDSGRQ1 for automotive designs requiring AEC-Q100 compliance and tighter board space; lower max current and narrower input range limit direct substitution. |
Compared with TPS62056DGSRG4, TPS62052DGSR offers identical functionality at 1.5 V output but cannot replace it electrically, while TPS62067QDSGRQ1 adds automotive qualification and higher frequency at reduced current and input range - neither is pin-compatible nor functionally interchangeable without schematic and layout revision.
Availability
TPS62056DGSRG4 is available at Aetrix Electronics and suitable for cellular handsets, digital cameras, handheld medical devices, and industrial data loggers requiring stable component supply with long-term manufacturability and consistent parametric performance.
Supply support for TPS62056DGSRG4 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.
The TPS6205x product line was engineered for portable battery-powered systems demanding high light-load efficiency, small solution size, and robust protection - targeting cellular, PDA, and low-power DSP applications operating from 1–2 cell Li-ion or multi-cell alkaline sources.
FAQ
What is the output voltage tolerance of the TPS62056DGSRG4 over temperature and load?
The TPS62056DGSRG4 has a fixed 3.3 V output with ±3% tolerance across the full operating range of –40°C to 85°C ambient temperature and 0–600 mA load current, as specified in the Electrical Characteristics table under "Fixed output voltage tolerance" with VIN = 3.75 V to 10 V. This tolerance includes initial accuracy, line regulation (5.2 mV/V), and load regulation (0.0045%/mA) contributions.
Does the TPS62056DGSRG4 require an external feedback resistor network?
No, the TPS62056DGSRG4 does not require an external feedback resistor network. It is a fixed-output variant with an internal resistive divider (700–1300 kΩ total) connecting FB to GND, configured for 3.3 V. The FB pin is internally connected and must not be externally biased; leaving it unconnected is compliant with datasheet guidance.
How does the SYNC pin affect efficiency and noise performance in the TPS62056DGSRG4?
When SYNC is pulled high (>1.5 V), the TPS62056DGSRG4 operates in forced fixed-frequency PWM mode, eliminating frequency variation and simplifying EMI filtering - ideal for noise-sensitive analog circuits - though efficiency drops at light loads. When SYNC is low (<0.3 V), it enters PFM/PWM auto-switching, achieving up to 93% efficiency even at 10 mA by reducing switching frequency and quiescent current to 12 µA.
What is the minimum input voltage required for the TPS62056DGSRG4 to maintain 3.3 V output at full load?
The TPS62056DGSRG4 supports 100% duty cycle operation, allowing it to sustain 3.3 V output down to an input voltage equal to VOUT + IOUT × RDS(on)_P. With worst-case P-channel RDS(on) of 0.75 Ω at 3.3 V input (per datasheet note), the minimum viable input at 600 mA is approximately 3.3 V + (0.6 A × 0.75 Ω) = 3.75 V - matching the specified 3.75 V minimum input for full-load operation.
Can the TPS62056DGSRG4 be used without connecting the PG and LBO pins?
Yes, the TPS62056DGSRG4 can operate with PG and LBO left unconnected, as stated in the datasheet: "Leave the PG pin unconnected, or connect it to GND when not used" and "Leave the LBO pin unconnected, or connect to GND when not used." Both pins default to high-impedance when inactive, and their absence does not affect regulation, efficiency, or basic converter functionality.
TPS62056DGSRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
TPS62056DGSRG4 FAQ
1.How can I place an order for TPS62056DGSRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62056DGSRG4 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 TPS62056DGSRG4 reliable?
The price and inventory of TPS62056DGSRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62056DGSRG4 is usually 5 days.
3.What payment methods are accepted for TPS62056DGSRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62056DGSRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62056DGSRG4?
TPS62056DGSRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62056DGSRG4 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 TPS62056DGSRG4?
For technical support, including TPS62056DGSRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62056DGSRG4 requirements.
6.How does Aetrix verify that TPS62056DGSRG4 is sourced from the original manufacturer or authorized distributors?
All TPS62056DGSRG4 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 TPS62056DGSRG4 meets industry standards.
7.What is the process for return or replacement of TPS62056DGSRG4?
All TPS62056DGSRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62056DGSRG4, 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 TPS62056DGSRG4 part is unused and in its original packaging.
Return procedure for TPS62056DGSRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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