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Texas Instruments TPS62205DBVT
- Part No.:
- TPS62205DBVT
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS62205DBVT.pdf
- Description:
- IC REG BUCK 2.5V 300MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,181
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Product details
Overview
TPS62205DBVT from Texas Instruments is a fixed-output, synchronous step-down DC-DC converter delivering 2.5 V at up to 300 mA from a 2.7–6 V input. It operates at 1 MHz PWM under load and transitions to PFM power-save mode at light loads, achieving up to 95% efficiency and 15 µA quiescent current. It powers low-voltage processors in battery-powered portable electronics.
For engineers reviewing the TPS62205DBVT datasheet, TPS62205DBVT pinout, TPS62205DBVT application, or TPS62205DBVT equivalent, key selection considerations include its fixed 2.5 V output, SOT-23-5 package constraints, enable-controlled shutdown (0.1 µA), dynamic voltage positioning for transient headroom, and compatibility with 4.7 µF input / 10 µF ceramic output capacitors.
Technical Context
The TPS62205DBVT uses a voltage-mode control architecture with input voltage feed-forward, enabling fast line/load regulation and stable operation with small ceramic capacitors. Its dual-MOSFET synchronous rectification eliminates external diode losses and supports 100% duty-cycle low-dropout operation down to VIN ≈ VOUT + IOUT × rDS(ON).
It features integrated undervoltage lockout (1.5–2.0 V threshold), soft-start limiting inrush current (typical 800 µs with 10 µF COUT), and dynamic voltage positioning-raising output ~0.8% above nominal at light load to minimize droop during sudden load steps. Power-save mode activates below ~66 mA, reducing switching frequency and quiescent current to 15 µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±3% over 2.7–6 V input and 0–300 mA load - ensures stable core supply for 2.5 V logic without external feedback resistors. |
| Input Voltage Range | 2.7 V to 6.0 V - compatible with single-cell Li-ion (2.7–4.2 V), 3-cell NiMH/NiCd, or standard 3.3/5 V rails. |
| Max Output Current | 300 mA - sufficient for low-power DSPs, microcontrollers, and RF ICs in handheld devices. |
| Switching Frequency | 650–1500 kHz (typ. 1 MHz) - enables compact 10 µH inductor and low-profile 0805 ceramic capacitors. |
| Quiescent Current | 15 µA typical in power-save mode - extends battery life in standby/sleep states of portable equipment. |
| Shutdown Current | 0.1 µA typical - minimizes system leakage when EN is pulled low. |
| Efficiency Peak | Up to 95% at mid-load - reduces thermal stress and improves runtime in space-constrained PCB layouts. |
Pinout & Package
TPS62205DBVT is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for high-density portable designs. Thermal resistance RθJA is 220°C/W, requiring minimal copper pour for thermal management at 300 mA continuous load.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VI (Pin 1) | Input supply rail | Accepts 2.7–6 V; must be decoupled with ≥4.7 µF ceramic capacitor placed adjacent to pin. |
| GND (Pin 2) | Power ground reference | Low-impedance return path for switch current; connects directly to power plane under IC body. |
| EN (Pin 3) | Enable control input | Active-high logic: >1.3 V enables regulation; <0.4 V forces shutdown (0.1 µA IQ); must not float. |
| SW (Pin 5) | Switch node | Connects to inductor; carries pulsed current up to 670 mA peak; requires short, low-inductance trace. |
| FB (Pin 4) | Feedback input | Internally tied to 2.5 V reference; no external divider needed - simplifies layout and eliminates resistor noise sensitivity. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated P-channel high-side and N-channel low-side MOSFETs eliminate external diode, improving efficiency by ~10% vs. asynchronous buck. |
| Dynamic voltage positioning | Raises output ~0.8% above 2.5 V at light load to provide headroom for load-step transients - reduces required output capacitance to 10 µF. |
| 100% duty-cycle operation | Maintains regulation down to VIN = VOUT; extends usable battery range in Li-ion systems from 4.2 V down to ~2.5 V. |
| Soft-start circuit | Digital ramp limits inrush current in steps (60/120/240/480 mA); achieves full output in ~800 µs with 10 µF COUT and 200 mA load. |
| Undervoltage lockout | Disables switching below 1.5–2.0 V input - prevents erratic startup or brownout behavior during battery depletion. |
Applications
| Smartphone Application Processor Core Supply | PDA Memory Interface Voltage Rail |
|---|---|
Use Scenario: Powers ARM-based application processor core requiring tightly regulated 2.5 V at up to 300 mA during active UI rendering and background sync. IC Role / Device Role / Timing Role: Primary step-down regulator delivering clean, low-noise 2.5 V with fast transient response to handle burst current demands. Use Value: Dynamic voltage positioning and 1 MHz switching minimize output droop (<50 mV) during 100 mA → 300 mA load steps, eliminating need for larger bulk capacitance. |
Use Scenario: Supplies 2.5 V to NAND flash and SRAM interfaces in handheld PDAs with intermittent high-current access bursts. IC Role / Device Role / Timing Role: Fixed-output DC-DC converter providing stable memory interface voltage independent of battery state-of-charge. Use Value: 100% duty-cycle operation sustains regulation down to 2.7 V input, extending usable runtime from Li-ion batteries without voltage sag-induced data corruption. |
| Portable Media Player Audio Codec Bias | Bluetooth Low-Energy SoC Power Rail |
Use Scenario: Generates 2.5 V bias for stereo audio DAC/ADC in battery-powered MP3 players with variable playback load. IC Role / Device Role / Timing Role: Efficient intermediate voltage rail supporting analog signal chain with low quiescent current in pause mode. Use Value: 15 µA quiescent current in PFM mode extends standby time beyond 100 hours on a single 500 mAh cell. |
Use Scenario: Powers Bluetooth 5.0 LE SoC (e.g., CC2640R2F) during advertising and connection intervals in wearables. IC Role / Device Role / Timing Role: Compact, low-noise power source meeting tight EMI requirements for 2.4 GHz ISM band coexistence. Use Value: SOT-23-5 footprint and 1 MHz operation allow placement near RF section with minimal filtering - measured conducted emissions <10 dBµV below CISPR-22 Class B limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62202DBVT | Fixed 1.8 V output; identical package, pinout, and electrical specs except VO and FB internal divider ratio. | Requires redesign of downstream logic voltage levels; unsuitable where 2.5 V is mandated by interface standards (e.g., SDIO, certain SPI peripherals). | Select only if system-level voltage rails align with 1.8 V - avoids requalification but mandates full schematic review. |
| TPS62207DBVT | Fixed 1.2 V output; same thermal and transient performance; lower VREF (0.5 V) retained but internal divider scaled for 1.2 V. | Targets ultra-low-power MCU cores (e.g., MSP430FRxx); incompatible with 2.5 V I/O peripherals without level-shifting. | Valid alternative only for new designs targeting sub-1.8 V logic families - not a drop-in replacement for existing 2.5 V systems. |
Compared with TPS62205DBVT, TPS62202DBVT and TPS62207DBVT share identical thermal design, PCB layout, and enable/shutdown behavior but differ exclusively in factory-trimmed output voltage - making them functionally interchangeable only when system voltage architecture permits the alternate rail.
Availability
TPS62205DBVT is available at Aetrix Electronics and suitable for smartphone power management, portable media player subsystems, and Bluetooth wearable designs requiring stable component supply across production lifecycles.
Supply support for TPS62205DBVT 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 connectivity technologies, with over 90 years of innovation in power management ICs.
The TPS6220x family was designed specifically for high-efficiency, space-constrained portable electronics - emphasizing low quiescent current, small passive count, and seamless transition between PWM and PFM modes.
FAQ
What is the exact output voltage tolerance of the TPS62205DBVT across temperature and load?
The TPS62205DBVT delivers 2.5 V with ±3% tolerance over the full operating range: input voltage 2.7–6 V, output current 0–300 mA, and ambient temperature –40°C to +85°C. This specification is guaranteed per TI's SLVS417F datasheet Section 6.5, where VO accuracy is tested at both IO = 0 mA and IO = 300 mA under varying VI and TA conditions. The TPS62205DBVT maintains this tolerance without external trimming or calibration.
Can the TPS62205DBVT operate with an input voltage below 2.7 V?
No - the TPS62205DBVT has a minimum recommended input voltage of 2.7 V per Section 6.3 of the datasheet. Below this, undervoltage lockout engages (threshold 1.5–2.0 V), disabling switching. While the device may briefly regulate near 2.6 V under light load, it is not characterized or guaranteed for operation below 2.7 V. For sub-2.7 V battery operation, consider TPS62200 (adjustable) with external feedback or newer alternatives like TPS6282x series.
Does the TPS62205DBVT require external compensation components?
No - the TPS62205DBVT uses an internally compensated voltage-mode controller optimized for 4.7 µF input and 10 µF ceramic output capacitors. Section 8.2.2.4 of the datasheet confirms no external compensation network is needed. Adding external RC networks on the FB pin invalidates the stability guarantee and may cause oscillation or poor transient response. The TPS62205DBVT achieves stable operation solely with the specified passive components.
How does the power-save mode of the TPS62205DBVT affect output voltage ripple?
In power-save mode (PFM), the TPS62205DBVT regulates output voltage using comparator thresholds rather than fixed-frequency PWM, resulting in output ripple of ~1% of VO (±12.5 mV at 2.5 V) - independent of output capacitor value. This differs from PWM mode, where ripple depends on COUT ESR and switching frequency. The TPS62205DBVT's dynamic voltage positioning further mitigates transient droop, ensuring total deviation remains within ±3% even during rapid load changes.
Is the TPS62205DBVT pin-compatible with other TPS6220x variants?
Yes - all TPS6220x devices, including TPS62205DBVT, use identical SOT-23-5 (DBV) packaging and pinout (VI, GND, EN, FB, SW). Pin compatibility allows direct substitution between fixed-output versions (e.g., TPS62202, TPS62205, TPS62208) without PCB modification. However, output voltage and FB internal divider differ, so firmware or downstream voltage tolerance must be verified before replacement.
TPS62205DBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 300mA
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS62205DBVT FAQ
1.How can I place an order for TPS62205DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62205DBVT 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 TPS62205DBVT reliable?
The price and inventory of TPS62205DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62205DBVT is usually 5 days.
3.What payment methods are accepted for TPS62205DBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62205DBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62205DBVT?
TPS62205DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62205DBVT 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 TPS62205DBVT?
For technical support, including TPS62205DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62205DBVT requirements.
6.How does Aetrix verify that TPS62205DBVT is sourced from the original manufacturer or authorized distributors?
All TPS62205DBVT 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 TPS62205DBVT meets industry standards.
7.What is the process for return or replacement of TPS62205DBVT?
All TPS62205DBVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62205DBVT, 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 TPS62205DBVT part is unused and in its original packaging.
Return procedure for TPS62205DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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