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Texas Instruments TPS63050RMWT
- Part No.:
- TPS63050RMWT
- Manufacturer:
- Texas Instruments
- Package:
- 12-VFQFN
- Datasheet:
-
TPS63050RMWT.pdf
- Description:
- IC REG BUCK BST ADJ 500MA 12VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,170
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Product details
Overview
TPS63050RMWT from Texas Instruments is an adjustable-output, single-inductor buck-boost DC/DC converter with 1-A internal switches, 2.5–5.5 V input range, 0.5-A continuous output current at 3.3 V, and seamless buck-to-boost transition. It delivers >95% efficiency in buck mode and >90% in boost mode for battery-powered portable electronics requiring stable rail generation across varying cell voltages.
For engineers reviewing the TPS63050RMWT datasheet, TPS63050RMWT pinout, TPS63050RMWT application, or TPS63050RMWT equivalent, key selection criteria include its programmable input current limit (via ILIM0/ILIM1), adjustable soft-start (SS pin), PFM/PWM mode control, power-good (PG) open-drain output, and thermal shutdown at 140°C - all critical for compact, high-efficiency power management in space-constrained designs.
Technical Context
The TPS63050RMWT implements average current-mode control using four internal N-channel MOSFETs, operating as a true buck converter when VIN > VOUT and as a true boost converter when VIN < VOUT - never switching all four FETs simultaneously. Its fixed 2.5-MHz switching frequency enables small external components, while seamless mode transition avoids output glitches during input voltage crossing.
It features dual-mode operation: forced PWM (PFM/PWM = high) for low-noise, constant-frequency regulation, and automatic PFM/PWM (PFM/PWM = low) for ultra-low quiescent current (<65 µA) and extended battery life at light loads. Input current limiting is digitally selectable via two logic inputs (ILIM0/ILIM1), and soft-start is externally programmable via capacitor on the SS pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 5.5 V - supports single-cell Li-ion (2.7–4.2 V), Li-polymer, or two-cell alkaline/NiMH without input rail pre-regulation. |
| Output Current | 500 mA continuous at 3.3 V - sufficient for microcontrollers, sensors, and RF modules in portable devices. |
| Switching Frequency | 2.5 MHz typical - enables use of 1.5-µH inductors and 10-µF ceramic output capacitors for minimal board area. |
| Quiescent Current | 43–65 µA - ensures minimal battery drain during standby in always-on applications like smart meters. |
| Efficiency | >95% in buck mode, >90% in boost mode - reduces thermal load and extends runtime in battery-powered systems. |
| Soft-Start Time | 280 µs (buck), 600 µs (boost) with floating SS - prevents inrush current damage to input source and output capacitors. |
| Thermal Shutdown | 140°C with 20°C hysteresis - protects device and system under sustained overload or poor PCB thermal design. |
Pinout & Package
TPS63050RMWT is housed in a 2.5 mm × 2.5 mm, 12-pin HotRod™ QFN package (RMW suffix), optimized for low thermal resistance (RθJA = 37.3°C/W) and high-current handling with exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Supplies both control circuitry and power stage; accepts 2.5–5.5 V; connects to input capacitor and inductor L1. |
| VOUT | Regulated output | Delivers adjustable output (via FB divider); connects to output capacitor and load; provides up to 500 mA. |
| FB | Feedback input | Connects to resistor divider for output voltage setting; internal reference is 0.8 V; accuracy ±1.1% in PWM mode. |
| EN | Enable control | Active-high logic input; must be pulled high to operate; disconnects load from input during shutdown. |
| PG | Power-good indicator | Open-drain output; goes high-Z when VOUT ≥ 95% of target, low when VOUT ≤ 90%; requires external pull-up. |
| PFM/PWM | Mode select | Logic input: low = automatic PFM/PWM, high = forced PWM; determines noise vs. efficiency trade-off. |
| SS | Soft-start timing | Capacitor-connected pin; charges at ~1 µA; sets monotonic output ramp time and limits inrush current. |
| ILIM0 / ILIM1 | Current limit programming | Two logic inputs selecting one of four input current limit levels (e.g., 550–1400 mA at VIN=3 V, VOUT=3.3 V). |
| L1 / L2 | Inductor connections | High-current terminals for single external inductor; L1 connects to VIN, L2 to VOUT; shared path for buck/boost energy transfer. |
| GND | Ground reference | Power and signal ground; two pins (pins 2 and 9) provide low-impedance return paths for high di/dt currents. |
Key Features
| Feature | Design Value |
|---|---|
| Seamless buck-boost transition | Eliminates output voltage discontinuity when input crosses output voltage - critical for uninterrupted operation in battery discharge profiles. |
| Adjustable input current limit | Four discrete levels set by ILIM0/ILIM1 logic states - prevents overcurrent stress during startup or fault conditions without external sensing. |
| Programmable soft-start | External capacitor on SS pin controls ramp rate - ensures controlled output rise and avoids undershoot/overshoot in sensitive loads. |
| Load disconnect in shutdown | Internal switch isolates VOUT from VIN when EN = low - prevents battery drain through load leakage paths. |
| Power-good (PG) monitoring | Open-drain PG output signals valid regulation status - enables system-level sequencing and fault detection in multi-rail designs. |
Applications
| Cellular Smartphones | Smart Meters |
|---|---|
Use Scenario: Powering application processor I/O rails and PMIC subsystems from a single Li-ion cell whose voltage drops from 4.2 V to 3.0 V during discharge. IC Role / Device Role / Timing Role: Primary buck-boost regulator generating stable 3.3-V supply with seamless mode transition to maintain SoC functionality across full battery range. Use Value: Eliminates need for separate buck and boost converters, reducing BOM count and PCB area while sustaining >90% efficiency down to 2.7 V input. | Use Scenario: Providing regulated 3.3-V supply for metrology ADC, RF transceiver, and real-time clock in battery-backed smart grid endpoints. IC Role / Device Role / Timing Role: Always-on power manager delivering low-quiescent-current operation (<65 µA) and thermal protection in sealed outdoor enclosures. Use Value: Extends 10-year battery life via PFM mode at light loads and ensures reliability with 140°C thermal shutdown and undervoltage lockout. |
| Tablet PCs | Portable Medical Sensors |
Use Scenario: Supplying 3.3-V logic rail for touch controller and display interface in compact tablet designs with tight thermal constraints. IC Role / Device Role / Timing Role: High-frequency (2.5 MHz) buck-boost converter enabling 1.5-µH inductor and 10-µF ceramic capacitor footprint. Use Value: Achieves <25 mm² total solution size while maintaining >95% efficiency in buck region and robust transient response. | Use Scenario: Powering low-noise analog front-end and Bluetooth LE radio in handheld diagnostic devices powered by coin-cell or small Li-polymer batteries. IC Role / Device Role / Timing Role: Adjustable-output regulator supporting multiple sensor bias voltages via FB divider, with soft-start preventing ECG/EEG signal corruption at power-on. Use Value: Programmable soft-start (SS pin) and precise 0.8-V feedback reference enable <±1% output accuracy critical for calibrated measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS63051RMWT | Fixed 3.3-V output; no FB pin; identical package, pinout, and electrical specs except output voltage setting. | Eliminates external resistor divider but lacks output adjustability; suited for single-rail systems only. | Select TPS63051RMWT when 3.3 V is fixed requirement and board space for FB resistors must be minimized. |
| MAX77827BEWL+T | 2.5–5.5 V input, 0.6–5.2 V adjustable output, 1.2-A capability, 2-MHz switching, different pinout and control interface (I²C programmable). | Supports dynamic voltage scaling and telemetry via I²C; requires firmware integration and additional layout effort. | Choose MAX77827BEWL+T when system-level voltage agility or telemetry is required, accepting higher design complexity. |
Compared with TPS63050RMWT, TPS63051RMWT offers identical performance in a fixed-output variant with simplified layout, while MAX77827BEWL+T adds programmability and higher current at the cost of digital interface overhead and non-pin-compatible packaging.
Availability
TPS63050RMWT is available at Aetrix Electronics and suitable for cellular smartphones, smart meters, tablet PCs, portable medical sensors, and battery-powered IoT edge nodes requiring stable component supply with consistent parametric performance and long-term manufacturability.
Supply support for TPS63050RMWT 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 and battery-aware power architecture.
The TPS6305x product line was designed specifically for portable and battery-operated applications needing wide-input, single-inductor buck-boost regulation with minimal external components and robust protection features.
FAQ
What is the maximum continuous output current supported by the TPS63050RMWT?
The TPS63050RMWT delivers up to 500 mA continuous output current at 3.3 V when operating in boost mode (VIN ≥ 2.5 V). In buck mode (VIN > VOUT), it supports up to 1 A, limited by internal switch ratings and thermal design. The actual achievable current depends on input voltage, ambient temperature, PCB layout, and thermal management - with derating above 85°C ambient.
How does the TPS63050RMWT handle transitions between buck and boost modes?
The TPS63050RMWT uses average current-mode control with four internal N-channel MOSFETs to ensure seamless buck-to-boost transition. When VIN approaches VOUT, it alternates buck and boost cycles without output voltage disruption. No more than three consecutive cycles in the same mode are allowed in the buck-boost region, guaranteeing stability and minimizing ripple during crossover.
Can the output voltage of the TPS63050RMWT be adjusted, and how is it configured?
Yes, the TPS63050RMWT features an adjustable output voltage set via an external resistor divider connected to the FB pin. The internal reference is 0.8 V, so VOUT = 0.8 V × (1 + R1/R2). This allows precise configuration from 2.5 V to 5.5 V. In contrast, the pin-compatible TPS63051RMWT has a fixed 3.3-V output and omits the FB pin.
What is the purpose of the ILIM0 and ILIM1 pins on the TPS63050RMWT?
The ILIM0 and ILIM1 pins on the TPS63050RMWT configure the programmable average input current limit during startup and steady-state operation. With four possible logic combinations, they select one of four current limit thresholds - ranging from ~480 mA to ~1950 mA depending on VIN and VOUT - protecting the input source and device from inrush and overload without external current-sense circuitry.
Does the TPS63050RMWT include thermal protection, and what is its trip point?
Yes, the TPS63050RMWT includes integrated thermal shutdown protection that activates at a junction temperature of typically 140°C, with 20°C hysteresis. Once triggered, the device halts switching and disables output until the die cools below 120°C. This safeguard prevents permanent damage under sustained overload, poor heatsinking, or high ambient conditions - critical for unattended battery-powered deployments.
TPS63050RMWT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 12-VFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 500mA
- Frequency - Switching:
- 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-VQFN-HR (2.5x2.5)
TPS63050RMWT FAQ
1.How can I place an order for TPS63050RMWT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS63050RMWT 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 TPS63050RMWT reliable?
The price and inventory of TPS63050RMWT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS63050RMWT is usually 5 days.
3.What payment methods are accepted for TPS63050RMWT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS63050RMWT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS63050RMWT?
TPS63050RMWT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS63050RMWT 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 TPS63050RMWT?
For technical support, including TPS63050RMWT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS63050RMWT requirements.
6.How does Aetrix verify that TPS63050RMWT is sourced from the original manufacturer or authorized distributors?
All TPS63050RMWT 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 TPS63050RMWT meets industry standards.
7.What is the process for return or replacement of TPS63050RMWT?
All TPS63050RMWT units undergo pre-shipment inspection (PSI). If there is an issue with TPS63050RMWT, 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 TPS63050RMWT part is unused and in its original packaging.
Return procedure for TPS63050RMWT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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