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Texas Instruments TPS61031PWP
- Part No.:
- TPS61031PWP
- Manufacturer:
- Texas Instruments
- Package:
- 16-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS61031PWP.pdf
- Description:
- IC REG BOOST 3.3V 3.6A 16HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,905
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Product details
Overview
TPS61031PWP 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 pins. It is used in portable electronics requiring regulated 5 V rail generation from declining battery sources.
For engineers reviewing the TPS61031PWP datasheet, TPS61031PWP pinout, TPS61031PWP application, or TPS61031PWP equivalent, key selection considerations include its 4 A switch current limit, Power Save mode operation below 10 mA load, shutdown load disconnect capability, low 20 µA quiescent current, and TSSOP-16 PowerPAD™ package thermal performance.
Technical Context
The TPS61031PWP 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 response for transient robustness. Its synchronous rectifier uses integrated N-channel and P-channel MOSFETs with separate PGND and GND pins to minimize ground shift and enable true load isolation during shutdown.
It integrates antiringing circuitry on the SW node to suppress discontinuous-conduction-mode ringing, includes undervoltage lockout (~1.6 V), soft-start with precharge and current-limited startup, and supports external synchronization (500–700 kHz) or Power Save mode via the SYNC pin. The LBI/LBO comparator operates only when EN is high and uses a 500 mV internal reference with 10 mV hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5 V - eliminates need for external feedback resistors; stable regulation across 1.8–5.5 V input range. |
| Max Output Current | 1000 mA at 5 V - supports power-hungry peripherals like USB ports or displays in portable devices. |
| Switch Current Limit | 4000 mA typical - enables reliable inductor sizing and prevents overcurrent damage under transient loads. |
| Quiescent Current | 20 µA typical - extends battery life in always-on or low-duty-cycle applications such as remote controls. |
| Efficiency | 96% peak - reduces thermal stress and maximizes runtime in space-constrained battery-powered designs. |
| Switching Frequency | 600 kHz nominal - allows compact external components (e.g., 6.8 µH inductor, 10 µF ceramic input cap). |
| Shutdown Current | 0.1–1 µA - ensures negligible battery drain during system sleep or off-state. |
| Feedback Reference | 500 mV - applies only to adjustable variants; TPS61031PWP uses internal 5 V reference, not FB pin. |
Pinout & Package
TSSOP-16 PowerPAD™ package (5.00 mm × 4.40 mm) with exposed thermal pad soldered to PGND plane for enhanced thermal dissipation (RθJA = 46.9°C/W). Pin 16 is NC (no internal connection); PowerPAD™ must be connected to PGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 9) | Enable input | Active-high logic: connects to VBAT to enable; ties to GND to fully isolate load and reduce battery drain to sub-µA. |
| VOUT (Pins 13–15) | Regulated output | Three parallel pins reduce IR drop and improve current handling for 1 A output delivery. |
| PGND (Pins 3–5) | Power ground | Separate return path for high-current switch and rectifier; must connect to PCB PGND plane, not signal GND. |
| SW (Pins 1–2) | Boost switch node | Connects to inductor and diode/switch; carries high dv/dt switching waveform; requires tight layout to minimize EMI. |
| LBI (Pin 7) | Low-battery input | Accepts scaled battery voltage; comparator triggers at 500 mV threshold (10 mV hysteresis) when device is enabled. |
| LBO (Pin 10) | Low-battery output | Open-drain flag - requires external pullup; asserts low when LBI falls below threshold, signaling end-of-life battery condition. |
| SYNC (Pin 8) | Mode control | Low = Power Save mode; high = fixed-frequency operation; external clock = synchronization (500–700 kHz). |
| VBAT (Pin 6) | Input supply | Accepts 1.8–5.5 V; includes UVLO (~1.6 V) to prevent malfunction during deep discharge. |
Key Features
| Feature | Design Value |
|---|---|
| Load disconnect during shutdown | True isolation achieved by disconnecting PMOS cathode from source - prevents backfeed and eliminates need for external reverse-blocking FET. |
| Integrated antiringing switch | Clamps SW node to VBAT during DCM, suppressing parasitic ringing without external snubber components. |
| Power Save mode | Automatically engages below ~10 mA load to maintain >85% efficiency - critical for standby power optimization. |
| Thermal protection | Overtemperature shutdown at 140°C with 20°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
| Low-EMI design | Controlled slew rates and integrated antiringing reduce radiated emissions, easing EMC compliance in portable Class B devices. |
Applications
| MP3 Player Power Management | PDA System Rail Generation |
|---|---|
Use Scenario: Portable audio player powered by single-cell Li-ion battery (2.8–4.2 V) requiring stable 5 V for USB charging port and display backlight. IC Role / Device Role / Timing Role: Primary boost regulator generating regulated 5 V output; manages dynamic load steps from audio decoding to screen refresh. Use Value: 96% efficiency extends playback time; Power Save mode minimizes idle current; LBO alerts firmware of battery depletion before shutdown. | Use Scenario: Handheld PDA using dual-cell NiMH (2.4–3.0 V) to power 3.3 V logic and 5 V peripheral interface (e.g., SD card slot). IC Role / Device Role / Timing Role: High-efficiency step-up converter supplying clean 5 V rail; synchronized to system clock via SYNC pin to avoid beat frequencies. Use Value: Fixed 5 V output simplifies BOM; 4 A switch headroom supports hot-plug SD insertion surge; TSSOP PowerPAD™ enables compact layout. |
| Wireless Headset Charging Circuit | Portable Medical Glucometer |
Use Scenario: Rechargeable Bluetooth headset with micro-USB input; boost converter generates 5 V from 3.7 V Li-ion cell to charge internal battery or power RF section. IC Role / Device Role / Timing Role: Bidirectional-capable boost stage (with external circuitry); provides regulated 5 V during wired charging and system operation. Use Value: 20 µA quiescent current preserves charge during storage; shutdown load disconnect prevents self-discharge; low EMI avoids interference with 2.4 GHz radio. | Use Scenario: Battery-operated blood glucose meter using AAA alkaline cells (1.8–3.0 V) to power LCD, sensor bias, and BLE wireless transmission. IC Role / Device Role / Timing Role: Primary power supply delivering precise 5 V for analog front-end and digital subsystem; LBI monitors battery health. Use Value: 500 mV LBI threshold enables accurate end-of-life detection; 1.8 V start-up supports full battery voltage range; small TSSOP footprint fits handheld form factor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61030PWP | Fixed 3.3 V output; identical pinout, package, and specs otherwise. | Used where 3.3 V logic rail is required instead of 5 V; no feedback resistor network needed. | Select TPS61030PWP when system requires 3.3 V output and shares same board layout and thermal constraints. |
| TPS61032PWP | Adjustable output (1.8–5.5 V) via FB pin; same package and switching characteristics. | Supports variable output configurations; requires external R-divider but offers design flexibility across product variants. | Choose TPS61032PWP when output voltage must be tuned per application or when consolidating multiple SKUs into one BOM. |
Compared with TPS61030PWP and TPS61032PWP, the TPS61031PWP provides optimal integration for 5 V–focused designs-eliminating external components while maintaining identical thermal, efficiency, and protection features across the family.
Availability
TPS61031PWP is available at Aetrix Electronics and suitable for portable medical devices, consumer audio equipment, handheld industrial scanners, and battery-powered IoT edge nodes requiring stable component supply and long-term manufacturability.
Supply support for TPS61031PWP 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management technologies for industrial, automotive, and consumer markets.
The TPS6103x product line was engineered specifically for high-efficiency, low-quiescent-current boost conversion in space- and battery-constrained portable electronics, emphasizing thermal robustness, load isolation, and system-level power supervision.
FAQ
What is the maximum output current capability of the TPS61031PWP?
The TPS61031PWP delivers up to 1000 mA at 5 V output when supplied from ≥2.4 V input. At lower inputs (e.g., 1.8 V), maximum output current decreases due to power conservation limits and switch current headroom. The internal 4000 mA peak switch current limit ensures safe operation under transient loads, and actual deliverable current depends on PCB layout, inductor DCR, and thermal management.
Does the TPS61031PWP require external feedback resistors to set the output voltage?
No. The TPS61031PWP has an internally trimmed 5 V output and does not use the FB pin. Unlike the adjustable TPS61032PWP, it requires no external resistor divider - simplifying design, reducing BOM count, and improving production consistency. The FB pin is left unconnected in standard operation.
How does the low-battery detection function work on the TPS61031PWP?
The TPS61031PWP's LBI/LBO circuit compares a scaled-down battery voltage (via external resistor divider) against an internal 500 mV reference. When enabled (EN = high), LBO pulls low if LBI drops below 500 mV. The comparator includes 10 mV hysteresis to prevent chatter. LBI must never float - tie to GND if unused. LBO is open-drain and requires a pullup resistor (typically 1 MΩ) to VOUT.
Can the TPS61031PWP operate in Power Save mode and still meet tight output voltage regulation requirements?
Yes. In Power Save mode, the TPS61031PWP maintains ±3% output voltage regulation by pulsing the switch only as needed to correct droop. This mode activates automatically below ~10 mA load and improves light-load efficiency to >85%, while preserving regulation accuracy through the internal error amplifier and 500 mV reference. For fixed-frequency operation, tie SYNC to VBAT.
What thermal considerations apply to the TPS61031PWP in TSSOP-16 PowerPAD™ package?
The TPS61031PWP in PWP package has RθJA = 46.9°C/W. To sustain 1 A output continuously, the PCB must provide adequate copper area connected to the PowerPAD™ (soldered to PGND) and minimize ambient temperature rise. Thermal shutdown triggers at 140°C with 20°C hysteresis. Layout best practices include short, wide traces for PGND/VOUT, thermal vias under PowerPAD™, and separation from heat sources.
TPS61031PWP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- 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
TPS61031PWP FAQ
1.How can I place an order for TPS61031PWP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61031PWP 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 TPS61031PWP reliable?
The price and inventory of TPS61031PWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61031PWP is usually 5 days.
3.What payment methods are accepted for TPS61031PWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61031PWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61031PWP?
TPS61031PWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61031PWP 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 TPS61031PWP?
For technical support, including TPS61031PWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61031PWP requirements.
6.How does Aetrix verify that TPS61031PWP is sourced from the original manufacturer or authorized distributors?
All TPS61031PWP 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 TPS61031PWP meets industry standards.
7.What is the process for return or replacement of TPS61031PWP?
All TPS61031PWP units undergo pre-shipment inspection (PSI). If there is an issue with TPS61031PWP, 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 TPS61031PWP part is unused and in its original packaging.
Return procedure for TPS61031PWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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