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Texas Instruments TPS63051RMWR
- Part No.:
- TPS63051RMWR
- Manufacturer:
- Texas Instruments
- Package:
- 12-VFQFN
- Datasheet:
-
TPS63051RMWR.pdf
- Description:
- IC REG BCK BST 3.3V 500MA 12VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:11,417
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Product details
Overview
TPS63051RMWR from Texas Instruments is a fixed-output 3.3 V, 500 mA synchronous buck-boost DC/DC converter with seamless mode transition, 2.5–5.5 V input range, 2.5 MHz switching frequency, and <65 µA quiescent current. It delivers regulated power in battery-powered portable electronics where input voltage may dip below or rise above the output rail.
For engineers reviewing the TPS63051RMWR datasheet, TPS63051RMWR pinout, TPS63051RMWR application, or TPS63051RMWR equivalent, key selection criteria include its fixed 3.3 V output, programmable input current limit (via ILIM0/ILIM1), adjustable soft-start, PFM/PWM mode control, and HotRod QFN thermal performance (RθJB = 8.0°C/W).
Technical Context
The TPS63051RMWR implements average current-mode control using four internal N-channel MOSFETs-operating as either buck (VIN > VOUT) or boost (VIN < VOUT) with one switch held on and one held off to minimize switching losses. Seamless mode transition occurs without output disruption when VIN crosses VOUT.
It integrates undervoltage lockout (1.7 V threshold, 200 mV hysteresis), thermal shutdown (140°C, 20°C hysteresis), overvoltage protection (~6.7 V), and open-drain power-good (PG) signaling with configurable behavior based on EN, ILIM0, and ILIM1 logic states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±1.1% (PWM mode); enables direct replacement of LDOs in 3.3 V rail systems without external feedback resistors. |
| Max Output Current | 500 mA continuous in boost mode (VIN ≥ 2.5 V); sufficient for USB peripherals, PMIC rails, and low-power microcontrollers. |
| Input Voltage Range | 2.5 V to 5.5 V; supports single-cell Li-ion (2.7–4.2 V), LiFePO₄ (2.5–3.65 V), and dual-cell alkaline/NiMH (2.5–3.6 V) battery inputs. |
| Switching Frequency | 2.5 MHz typical; allows use of small 1.5 µH inductors and 10 µF ceramic output capacitors, reducing solution footprint. |
| Quiescent Current | 43–65 µA at 3.6 V input; extends battery runtime in always-on sensor nodes and standby modes. |
| Efficiency | >90% in boost mode, >95% in buck mode; minimizes thermal load in sealed enclosures and improves energy harvesting system yield. |
| Thermal Resistance | RθJB = 8.0°C/W (HotRod QFN); enables 1 A peak switch current handling with minimal PCB copper area. |
Pinout & Package
TPS63051RMWR uses a 2.5 mm × 2.5 mm, 12-pin HotRod™ QFN package with exposed thermal pad (RMW suffix). The package supports high-current routing and low-inductance switching paths via copper leadframe construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Supplies both control circuitry and power stage; accepts 2.5–5.5 V; requires local 10 µF ceramic decoupling. |
| VOUT | Regulated output | Delivers fixed 3.3 V; connects directly to load; requires 10 µF output capacitance for stability and ripple control. |
| GND | Ground reference | Two dedicated pins (pins 2 & 9) provide separate power/control ground return paths to reduce noise coupling. |
| EN | Enable control | Active-high digital input; must be pulled high (>1.2 V) to operate; pulls low (<0.3 V) to enter 0.1 µA shutdown state with load disconnect. |
| PFM/PWM | Mode selection | Logic-controlled operation mode: low = automatic PFM/PWM (efficiency-optimized), high = forced PWM (fixed 2.5 MHz, low-noise). |
| PG | Power-good indicator | Open-drain output; asserts high-Z when VOUT > 95% of 3.3 V, sinks current when VOUT < 90%; requires external pullup. |
| SS | Soft-start timing | Capacitor-connected pin; charges at 1 µA to set monotonic startup; floating = default ~280 µs (buck) / ~600 µs (boost) ramp time. |
| ILIM0 / ILIM1 | Input current limit programming | Two logic inputs selecting one of four input current limit levels (e.g., 550–1400 mA at VIN=3.3 V); prevents inrush during cold start. |
| L1 / L2 | Inductor connections | Dual inductor terminals enabling buck-boost topology; require low-ESR 1.5 µH shielded inductor with 1.5 A saturation current. |
| FB | Feedback input | Internally connected to 3.3 V reference; not user-accessible-no external resistor divider needed for fixed-output operation. |
Key Features
| Feature | Design Value |
|---|---|
| Seamless buck-boost transition | Eliminates output voltage discontinuity when VIN crosses VOUT-critical for stable MCU/SOC operation during battery discharge. |
| Programmable input current limit | Four discrete current thresholds (via ILIM0/ILIM1) protect battery and PCB traces during startup and fault conditions. |
| Adjustable soft-start | Capacitor-timed ramp prevents inrush-induced input droop and output overshoot-enables reliable power sequencing. |
| Load disconnect in shutdown | Internal FET isolates VOUT from VIN during EN = low, preventing backfeed and enabling true system-level power gating. |
| Integrated thermal shutdown | 140°C junction trip with 20°C hysteresis ensures safe operation under sustained overload or poor heatsinking. |
Applications
| Smartphone Power Management | USB-C Accessory Rail |
|---|---|
Use Scenario: Regulating 3.3 V for baseband processor I/O, camera interface, and touch controller from a single-cell Li-ion battery (2.8–4.2 V). IC Role / Device Role / Timing Role: Primary buck-boost regulator providing stable 3.3 V supply with seamless mode transition as battery discharges past 3.3 V. Use Value: Maintains uninterrupted operation without brownouts during deep discharge; 95% peak efficiency reduces thermal stress in compact chassis. | Use Scenario: Generating 3.3 V for USB-C PD communication IC (e.g., CCGx) and sideband use (SBU) switches in portable adapters. IC Role / Device Role / Timing Role: Fixed-output DC/DC converter powering PD controller logic and level-shifters from variable VBUS (4.75–5.5 V) or battery backup. Use Value: 2.5 MHz operation avoids AM radio band interference; small 2.5×2.5 mm footprint fits tight adapter PCB layouts. |
| Smart Meter MCU Supply | Industrial Sensor Node |
Use Scenario: Delivering 3.3 V to ultra-low-power MCU (e.g., MSP430FR) and RF transceiver (e.g., CC1310) from primary alkaline or Li-SOCl₂ battery. IC Role / Device Role / Timing Role: Main system regulator supporting wide input (2.5–5.5 V) and low-quiescent-current sleep modes. Use Value: 43 µA IQ extends 10-year battery life; PG signal enables firmware-controlled power validation before data transmission. | Use Scenario: Powering MEMS accelerometer, BLE SoC, and EEPROM from coin cell (2.0–3.0 V) or energy harvester output (2.5–4.5 V). IC Role / Device Role / Timing Role: Efficient step-up/step-down regulator enabling operation across full harvestable voltage range. Use Value: PFM mode maintains >85% efficiency at 100 µA load; SS pin allows synchronization with wake-up timer for deterministic startup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS63050RMWR | Adjustable output (0.8–5.5 V) via external resistor divider; identical pinout, package, and electrical specs except FB pin is active. | Required when system needs programmable or non-3.3 V rails (e.g., 2.8 V for RF front-end, 5.0 V for USB PHY). | Select TPS63050RMWR only if output voltage flexibility is needed-adds two resistors but retains all other design reuse. |
| MP2155GQZ-P | Fixed 3.3 V output, 600 mA max, 2.2 MHz switching, 29 µA IQ; 2×2 mm QFN-12, but no PG or programmable current limit. | Suitable for cost-sensitive, space-constrained designs where power-good monitoring and inrush control are not required. | Choose MP2155GQZ-P for simpler BOM and lower IQ, but verify thermal margin (RθJB = 32°C/W) and absence of PG/ILIM features. |
Compared with TPS63051RMWR, TPS63050RMWR offers output adjustability at the cost of added resistors and slightly higher layout complexity, while MP2155GQZ-P trades advanced protection and monitoring features for lower quiescent current and reduced component count-making each suitable for distinct system priorities.
Availability
TPS63051RMWR is available at Aetrix Electronics and suitable for smartphone power management, USB-C accessory rails, smart meter MCU supplies, and industrial sensor nodes requiring stable component supply across long production lifecycles.
Supply support for TPS63051RMWR 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.
The TPS6305x product line was designed specifically for portable battery-powered systems needing high-efficiency, wide-input-range buck-boost regulation with minimal external components and robust protection features.
FAQ
What is the maximum continuous output current capability of the TPS63051RMWR?
The TPS63051RMWR delivers up to 500 mA continuous output current in boost mode (VIN ≥ 2.5 V, VOUT = 3.3 V). In buck mode (VIN > VOUT), it supports up to 1 A, but the TPS63051RMWR's fixed 3.3 V output and internal current sensing are optimized for the 500 mA boost rating. This makes the TPS63051RMWR ideal for mid-power portable applications where input voltage often falls below 3.3 V.
Does the TPS63051RMWR require external feedback resistors to set its output voltage?
No, the TPS63051RMWR does not require external feedback resistors. Its output is factory-trimmed to a fixed 3.3 V with ±1.1% accuracy in PWM mode. The FB pin is internally connected to the 0.8 V reference and is not accessible-unlike the adjustable TPS63050RMWR, which uses FB for external resistor-divider programming. This simplifies layout and eliminates resistor tolerance errors for 3.3 V applications.
How does the PFM/PWM pin affect the operation of the TPS63051RMWR?
The PFM/PWM pin on the TPS63051RMWR selects between two operating modes: when pulled low, the device enters automatic PFM/PWM mode-reducing switching frequency at light loads to maintain >85% efficiency down to 100 µA; when pulled high, it forces fixed-frequency 2.5 MHz PWM operation for predictable EMI and lower output ripple. This pin gives designers direct control over the trade-off between efficiency and noise in battery-sensitive systems.
What thermal performance can be expected from the TPS63051RMWR in a standard 2-layer PCB layout?
In a standard 2-layer PCB with 1 oz copper and minimal thermal vias, the TPS63051RMWR (RMW package) achieves RθJB = 8.0°C/W. At 500 mA output and 90% efficiency, power dissipation is ~185 mW, resulting in ~1.5°C junction-to-board temperature rise-well within safe limits. For higher ambient or sustained loads, adding 4–6 thermal vias under the exposed pad further reduces thermal resistance and improves reliability.
Can the TPS63051RMWR safely drive a short-circuited output?
Yes, the TPS63051RMWR includes short-circuit protection that limits output current to 1.5 A when VOUT drops below 1.2 V. During a hard short, the device enters hiccup mode-cycling on/off to limit average power dissipation and prevent thermal damage. This behavior, combined with thermal shutdown (140°C) and overvoltage protection (~6.7 V), ensures robust fault tolerance without external circuitry.
TPS63051RMWR 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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- 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)
TPS63051RMWR FAQ
1.How can I place an order for TPS63051RMWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS63051RMWR 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 TPS63051RMWR reliable?
The price and inventory of TPS63051RMWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS63051RMWR is usually 5 days.
3.What payment methods are accepted for TPS63051RMWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS63051RMWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS63051RMWR?
TPS63051RMWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS63051RMWR 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 TPS63051RMWR?
For technical support, including TPS63051RMWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS63051RMWR requirements.
6.How does Aetrix verify that TPS63051RMWR is sourced from the original manufacturer or authorized distributors?
All TPS63051RMWR 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 TPS63051RMWR meets industry standards.
7.What is the process for return or replacement of TPS63051RMWR?
All TPS63051RMWR units undergo pre-shipment inspection (PSI). If there is an issue with TPS63051RMWR, 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 TPS63051RMWR part is unused and in its original packaging.
Return procedure for TPS63051RMWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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