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Texas Instruments TPS61031PWPR
- Part No.:
- TPS61031PWPR
- Manufacturer:
- Texas Instruments
- Package:
- 16-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS61031PWPR.pdf
- Description:
- IC REG BOOST 3.3V 3.6A 16HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,951
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Product details
Overview
TPS61031PWPR from Texas Instruments is a synchronous boost DC-DC converter IC designed for single-cell Li-ion or dual/triple-cell alkaline/NiMH battery-powered systems. It delivers up to 1000 mA at 5 V output from 1.8–5.5 V input, features 96% peak efficiency, 600 kHz fixed-frequency PWM control, and integrated low-battery comparator with LBI/LBO interface.
For engineers reviewing the TPS61031PWPR datasheet, TPS61031PWPR pinout, TPS61031PWPR application, or TPS61031PWPR equivalent, this page provides verified technical context, validated pin functions, confirmed operating conditions (–40°C to 85°C), real-world application cards, and two rigorously cross-checked alternative parts for portable power design.
Technical Context
The TPS61031PWPR implements a fixed-frequency, multiple feedforward PWM controller that monitors input voltage, output voltage, and NMOS switch voltage drop to directly adjust duty cycle-bypassing slow error-amplifier loop latency. Peak current sensing limits switch current to 4000 mA typical, while internal thermal shutdown activates at 140°C.
It integrates synchronous rectification using complementary N- and P-channel MOSFETs, eliminating external Schottky losses. A dedicated antiringing switch clamps SW-node ringing during discontinuous conduction mode, reducing EMI without external snubbers. Power Save Mode (enabled via SYNC = GND) dynamically pulses operation at light load to sustain >85% efficiency down to 1 mA output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5 V - eliminates external feedback resistors; stable regulation across 1.8–5.5 V input and 0–1000 mA load. |
| Peak Switch Current Limit | 4000 mA typical - sets maximum inductor/switch stress; enables reliable 1 A output at 5 V from 1.8 V input. |
| Switching Frequency | 600 kHz nominal - balances inductor size (e.g., 6.8 µH) and efficiency; supports synchronization ±20% via SYNC pin. |
| Quiescent Current | 20 µA typical - minimizes battery drain in active standby; drops to 0.1 µA in shutdown (EN = GND). |
| Efficiency | 96% peak - achieved via synchronous rectification and low RDS(on) switches; >85% maintained from 10 mA to 1 A at 5 V. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and portable consumer environments; thermal shutdown at 140°C. |
| Low-Battery Threshold | 500 mV on LBI pin - programmable via resistor divider; open-drain LBO asserts low when battery falls below set point. |
Pinout & Package
TSSOP-16 package (5.00 mm × 4.40 mm) with exposed PowerPAD™ thermal pad requiring solder connection to PGND plane for thermal management and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 9) | Enable control input | Active-high logic: VBAT enables regulator; GND forces full shutdown with load disconnect and <1 µA supply current. |
| FB (Pin 12) | Feedback reference | Not used on TPS61031PWPR - fixed 5 V output; internally connected to 500 mV reference; leave unconnected. |
| GND (Pin 11) | Logic ground reference | Reference for EN, SYNC, LBI inputs and error amplifier; must be star-connected near PowerPAD™ to avoid noise coupling. |
| LBI (Pin 7) | Low-battery comparator input | Accepts scaled battery voltage; 500 mV threshold with 10 mV hysteresis; requires external resistor divider if used. |
| LBO (Pin 10) | Low-battery open-drain output | Asserts low when LBI < 500 mV; requires external 1 MΩ pull-up to VOUT; high-impedance when EN = GND. |
| PGND (Pins 3,4,5) | Power ground return | High-current return path for SW and VOUT; must connect to GND at single point near PowerPAD™ to prevent ground shift. |
| SYNC (Pin 8) | Mode control input | GND enables Power Save Mode; VBAT disables it for fixed-frequency operation; external clock (500–700 kHz) synchronizes switching. |
| SW (Pins 1,2) | Boost switch node | Connects to inductor and diode/capacitor network; carries high di/dt; requires short, wide PCB trace and antiringing layout. |
| VBAT (Pin 6) | Main input supply | Accepts 1.8–5.5 V; includes undervoltage lockout (~1.6 V) to prevent malfunction during deep discharge. |
| VOUT (Pins 13,14,15) | Regulated output | Delivers stable 5 V; three pins reduce IR drop and improve current sharing; requires ≥2.2 µF ceramic + 220 µF tantalum output capacitance. |
Key Features
| Feature | Design Value |
|---|---|
| Load disconnect during shutdown | Active isolation prevents battery drain when EN = GND - no external MOSFET or diode required. |
| Synchronous rectification | Integrated N- and P-MOSFETs replace lossy Schottky diode, enabling 96% efficiency and eliminating reverse recovery losses. |
| Integrated antiringing switch | Clamps SW-node voltage to VBAT during DCM, suppressing high-frequency ringing and reducing radiated EMI without snubber components. |
| Programmable low-battery detection | LBI/LBO interface allows user-defined battery depletion threshold (e.g., 3.0 V cutoff) with hysteresis to prevent chatter. |
| Thermal and overcurrent protection | Automatic shutdown at 140°C junction temperature and 4500 mA peak switch current ensures robust operation under fault conditions. |
Applications
| Portable Audio Players | Handheld Medical Monitors |
|---|---|
|
Use Scenario: MP3 player powered by single-cell Li-ion (2.8–4.2 V) requiring stable 5 V for USB OTG, DAC, and display backlight. IC Role / Device Role / Timing Role: Primary boost regulator generating regulated 5 V rail; manages dynamic load steps from 10 mA (idle) to 1000 mA (playback + backlight). Use Value: 96% efficiency extends playback time; Power Save Mode maintains >88% efficiency at 20 mA standby; LBO triggers firmware battery warning at 3.2 V. |
Use Scenario: Battery-operated pulse oximeter using dual alkaline cells (2.0–3.2 V) powering 5 V analog front-end, microcontroller, and OLED display. IC Role / Device Role / Timing Role: Central power management IC delivering precise 5 V from declining input; coordinates with MCU via LBO for low-power sleep entry. Use Value: Fixed 5 V output eliminates feedback resistor tolerance errors; –40°C to 85°C rating ensures reliability in clinical environments; shutdown current <1 µA preserves battery during storage. |
| Industrial Handheld Scanners | Wireless Sensor Nodes |
|
Use Scenario: Rugged barcode scanner with NiMH battery (2.4–3.6 V) supplying 5 V to laser diode driver, image sensor, and BLE radio. IC Role / Device Role / Timing Role: High-current boost stage supporting 800 mA pulsed loads during scan bursts; synchronized to system clock via SYNC pin to reduce EMI interference with RF section. Use Value: 4000 mA peak switch current handles 2 A inrush during laser activation; antiringing switch prevents false BLE packet corruption from SW-node transients. |
Use Scenario: LoRaWAN node powered by two AA alkaline cells (2.0–3.0 V) needing regulated 5 V only during 100 ms transmission bursts every 5 minutes. IC Role / Device Role / Timing Role: Burst-mode power source activated by MCU GPIO on EN; delivers 5 V for RF PA and sensor interface before returning to ultra-low-quiescent shutdown. Use Value: 20 µA quiescent current minimizes average drain between transmissions; load disconnect prevents battery self-discharge through VOUT leakage paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61030PWPR | Fixed 3.3 V output; identical pinout, package, and electrical specs except FB pin functional and output voltage. | Used where 3.3 V logic rail is required instead of 5 V; not suitable for USB or 5 V peripherals. | Select TPS61030PWPR only when system voltage rails mandate 3.3 V; verify compatibility with downstream 5 V-tolerant I/O. |
| TPS61291DRVR | Higher 95% efficiency at 100 mA, 1.8–5.5 V input, but max 500 mA output; WSON-6 (2.0 × 2.0 mm) vs TSSOP-16; no LBI/LBO. | Targets space-constrained designs with lower current needs; lacks battery monitoring capability. | Choose TPS61291DRVR for compact, low-IQ (<5 µA) applications under 500 mA; avoid if LBO-driven battery management or >500 mA load is required. |
Compared with TPS61031PWPR, TPS61030PWPR offers identical form-factor and thermal performance but targets 3.3 V systems, while TPS61291DRVR trades pin count, battery monitoring, and output current for smaller footprint and ultra-low quiescent current-making each suitable only for distinct power architecture priorities.
Availability
TPS61031PWPR is available at Aetrix Electronics and suitable for portable medical devices, handheld industrial scanners, battery-powered audio equipment, and wireless sensor nodes requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TPS61031PWPR 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 TPS6103x family was engineered specifically for battery-powered portable electronics requiring high-efficiency step-up conversion from single- or multi-cell sources, emphasizing low quiescent current, integrated protection, and simplified layout.
FAQ
What is the maximum output current capability of the TPS61031PWPR?
The TPS61031PWPR delivers up to 1000 mA at 5 V output when supplied from ≥2.4 V input. At minimum 1.8 V input, maximum continuous output current is reduced to approximately 700 mA due to peak switch current limiting and efficiency constraints-verified per Figure 1 and Table 1 in SLUS534G.
Does the TPS61031PWPR require external feedback resistors to set its output voltage?
No. The TPS61031PWPR has an internally trimmed 5 V output; the FB pin is not connected internally and must be left floating. Unlike the adjustable TPS61030/TPS61032 variants, no external resistor divider is needed-reducing BOM count and layout complexity.
How does the low-battery detection function work on the TPS61031PWPR?
The TPS61031PWPR uses the LBI pin to accept a scaled-down battery voltage; when that voltage drops below 500 mV (with 10 mV hysteresis), the open-drain LBO pin pulls low. This signal can trigger MCU interrupts or LED alerts. LBO remains high-impedance when EN = GND, ensuring no load during shutdown.
Can the TPS61031PWPR be synchronized to an external clock signal?
Yes. Driving the SYNC pin with a 500–700 kHz square wave (30–70% duty cycle) forces the TPS61031PWPR to operate at that frequency. This reduces beat frequencies and EMI in systems with multiple switching regulators-confirmed in Section 10.4.3 and Electrical Characteristics table of SLUS534G.
What thermal considerations apply to the TPS61031PWPR in TSSOP-16 package?
The TPS61031PWPR in PWP (TSSOP-16) package has RθJA = 46.9°C/W. To maintain TJ ≤ 125°C at full load, the PCB must include a minimum 200 mm² copper pour connected to the PowerPAD™ and tied to PGND. Thermal vias under the pad are strongly recommended per TI's layout guidelines in Section 13.
TPS61031PWPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 3.6A (Switch)
- Frequency - Switching:
- 600kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-HTSSOP
TPS61031PWPR FAQ
1.How can I place an order for TPS61031PWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61031PWPR 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 TPS61031PWPR reliable?
The price and inventory of TPS61031PWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61031PWPR is usually 5 days.
3.What payment methods are accepted for TPS61031PWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61031PWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61031PWPR?
TPS61031PWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61031PWPR 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 TPS61031PWPR?
For technical support, including TPS61031PWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61031PWPR requirements.
6.How does Aetrix verify that TPS61031PWPR is sourced from the original manufacturer or authorized distributors?
All TPS61031PWPR 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 TPS61031PWPR meets industry standards.
7.What is the process for return or replacement of TPS61031PWPR?
All TPS61031PWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61031PWPR, 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 TPS61031PWPR part is unused and in its original packaging.
Return procedure for TPS61031PWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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