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Texas Instruments TPS61031PWPRG4
- Part No.:
- TPS61031PWPRG4
- Manufacturer:
- Texas Instruments
- Package:
- 16-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS61031PWPRG4.pdf
- Description:
- IC REG BOOST 3.3V 3.6A 16HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,785
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Product details
Overview
TPS61031PWPRG4 from Texas Instruments is a synchronous boost DC-DC converter IC designed for single-cell Li-ion or dual-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 audio players and PDAs requiring compact, high-efficiency voltage boosting.
For engineers reviewing the TPS61031PWPRG4 datasheet, TPS61031PWPRG4 pinout, TPS61031PWPRG4 application, or TPS61031PWPRG4 equivalent, key selection considerations include its 5 V fixed output, TSSOP-16 PowerPAD™ package, 4 A switch current limit, power-save mode operation, and load disconnect during shutdown.
Technical Context
The TPS61031PWPRG4 implements a fixed-frequency, multiple feedforward PWM controller with synchronous rectification using integrated N-channel and P-channel MOSFETs. Input voltage, output voltage, and NMOS switch voltage drop are directly monitored to dynamically adjust duty cycle-bypassing slow error-amplifier loop response for fast transient handling.
It integrates a low-battery detector with 500 mV internal threshold on LBI, 10 mV hysteresis, and open-drain LBO output; an antiringing switch to suppress SW-node oscillation in discontinuous conduction mode; and undervoltage lockout (UVLO) at ~1.6 V on VBAT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5 V - eliminates external feedback resistors and simplifies layout for stable 5 V rail generation. |
| Input Voltage Range | 1.8 V to 5.5 V - supports single-cell Li-ion (2.5–4.2 V), two-cell alkaline/NiMH (2.4–3.6 V), and three-cell configurations down to end-of-life. |
| Switch Current Limit | 4000 mA typical - enables robust 1 A output at 5 V even at 1.8 V input, with margin for startup surges and transient loads. |
| Peak Efficiency | 96% - achieved via synchronous rectification and low RDS(on) switches, reducing conduction loss versus Schottky diode solutions. |
| Quiescent Current | 20 µA typical - minimizes battery drain in standby, critical for always-on portable devices with long shelf life requirements. |
| Switching Frequency | 600 kHz nominal - balances inductor size (enabling compact 6.8 µH designs) and switching loss for optimal power density. |
| Shutdown Current | 0.1–1 µA - ensures near-zero battery leakage when disabled, preserving charge during storage or system sleep. |
Pinout & Package
TSSOP-16 PowerPAD™ package (5.00 mm × 4.40 mm), thermally enhanced with exposed PowerPAD™ soldered to PGND plane for efficient heat dissipation in space-constrained portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 9) | Enable control input | Active-high logic: drives internal regulator ON/OFF; ties to VBAT for always-on, GND for full shutdown with load disconnect. |
| FB (Pin 12) | Feedback reference | Not used in TPS61031 - internal resistor divider sets fixed 5 V output; leave unconnected per datasheet. |
| GND (Pin 11) | Control ground reference | Reference node for all logic, error amplifier, and comparator circuits; must be star-connected near PowerPAD™. |
| LBI (Pin 7) | Low-battery comparator input | Accepts scaled battery voltage; comparator triggers at 500 mV with 10 mV hysteresis - enables programmable battery cutoff. |
| LBO (Pin 10) | Low-battery open-drain output | Active-low flag pulled up externally (e.g., 1 MΩ); signals host MCU when battery falls below programmed threshold. |
| 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 avoid ground shift. |
| SYNC (Pin 8) | Power-save/sync control | Low = enable power-save mode; high = fixed-frequency operation; external clock (500–700 kHz) forces synchronization. |
| SW (Pins 1,2) | Boost switch node | Connects to inductor and catch diode (replaced by internal PMOS); high dv/dt node requiring tight layout and antiringing design. |
| VBAT (Pin 6) | Main input supply | Accepts 1.8–5.5 V battery source; includes UVLO (~1.6 V) to prevent malfunction during deep discharge. |
| VOUT (Pins 13,14,15) | Regulated output | Delivers up to 1000 mA at 5 V; multiple pins reduce IR drop and thermal resistance for high-current delivery. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Replaces lossy Schottky diode with low-RDS(on) PMOS switch, enabling 96% efficiency and eliminating reverse recovery losses. |
| Load disconnect during shutdown | Special circuit isolates VOUT from VBAT when EN = low - prevents battery drain through output capacitors or downstream circuitry. |
| Integrated antiringing switch | Clamps SW node to VBAT during DCM, suppressing high-frequency ringing and reducing EMI without external snubbers. |
| Power-save mode | Automatically pulses at light load to maintain >85% efficiency down to 1 mA, extending runtime in intermittent-use applications. |
| Thermal protection | Overtemperature shutdown at 140°C with 20°C hysteresis prevents damage under sustained overload or poor heatsinking. |
Applications
| Portable Audio Players | PDA Power Management |
|---|---|
|
Use Scenario: MP3 player powered by single-cell Li-ion battery (2.8–4.2 V) requiring stable 5 V for USB interface and audio DAC. IC Role / Device Role / Timing Role: Primary voltage booster generating regulated 5 V rail from declining battery voltage, maintaining USB compliance across full discharge cycle. Use Value: Delivers 1000 mA at 5 V down to 1.8 V input, enabling full functionality until battery reaches safe cutoff - extends usable playback time by ~18% vs. non-boost alternatives. |
Use Scenario: Handheld PDA with dual-cell NiMH pack (2.4–3.6 V) powering 5 V LCD backlight and SD card interface. IC Role / Device Role / Timing Role: Central power conversion IC providing isolated 5 V supply with load disconnect to preserve battery during suspend mode. Use Value: Shutdown current <1 µA prevents >2% monthly self-discharge, while synchronous rectification maintains >90% efficiency at 200 mA backlight load. |
| Wireless Headphone Charging Case | Medical Sensor Node |
|
Use Scenario: Compact charging case with built-in Li-ion battery (3.0–4.2 V) that boosts to 5 V for USB-C charging of earbuds. IC Role / Device Role / Timing Role: High-density boost converter enabling ultra-thin form factor via 4 mm × 4.4 mm TSSOP PowerPAD™ and minimal external components. Use Value: 96% efficiency reduces thermal rise in sealed enclosure; antiringing switch meets Class B EMI limits without added filtering components. |
Use Scenario: Battery-powered wearable sensor collecting ECG data, requiring precise 5 V analog supply from coin cell or small Li-ion. IC Role / Device Role / Timing Role: Low-quiescent-power voltage booster with programmable low-battery detection (LBI/LBO) to trigger graceful shutdown before data corruption. Use Value: 20 µA quiescent current extends 3-year shelf life; 500 mV LBI threshold + 10 mV hysteresis enables accurate 2.8 V battery cutoff with ±0.1 V tolerance. |
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 specs otherwise - no FB pin required, but incompatible for 5 V systems. | Targeted at 3.3 V microcontroller rails; cannot replace TPS61031PWPRG4 where 5 V USB or logic is mandatory. | Select only if system requires 3.3 V and shares same PCB footprint - no redesign needed, but output voltage mismatch invalidates direct substitution. |
| TPS61291DRVR | Lower 1.8–5.5 V input, 5 V fixed output; 2.5 µA IQ, 2.1 MHz switching, QFN-12 package - smaller size but lower 750 mA output capability. | Better suited for ultra-low-power wearables; lacks LBI/LBO and load disconnect, limiting battery management depth. | Choose when board space is critical and 750 mA suffices; avoid where low-battery signaling or full load isolation is required. |
Compared with TPS61031PWPRG4, TPS61030PWPR offers identical packaging and efficiency but fails for 5 V applications due to fixed 3.3 V output, while TPS61291DRVR trades off battery monitoring and load isolation for smaller size and lower quiescent current - making it unsuitable for systems requiring robust power sequencing or runtime prediction.
Availability
TPS61031PWPRG4 is available at Aetrix Electronics and suitable for portable audio devices, handheld computing equipment, wireless charging cases, and medical sensor nodes requiring stable component supply with consistent parametric performance across production batches.
Supply support for TPS61031PWPRG4 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, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets since 1930.
The TPS6103x family was engineered specifically for high-efficiency, low-voltage battery-powered portable devices - emphasizing minimal external components, thermal resilience in confined spaces, and intelligent battery supervision.
FAQ
What is the output voltage configuration of the TPS61031PWPRG4?
The TPS61031PWPRG4 provides a fixed 5 V output voltage. Unlike adjustable variants (e.g., TPS61030/TPS61032), it does not require external feedback resistors - the voltage divider is internal, and the FB pin is unused and should remain unconnected. This configuration ensures consistent 5 V regulation across temperature and load without calibration overhead, making it ideal for USB-powered peripherals and 5 V logic interfaces.
Does the TPS61031PWPRG4 support load disconnect during shutdown?
Yes, the TPS61031PWPRG4 actively disconnects the load from the input during shutdown. When the EN pin is pulled low, internal circuitry isolates VOUT from VBAT by controlling the backgate of the high-side PMOS switch - preventing reverse current flow through the body diode. This feature ensures zero hold-up current and eliminates battery drain in standby, which is critical for long-term storage in portable medical or IoT devices using the TPS61031PWPRG4.
How does the low-battery detection work on the TPS61031PWPRG4?
The TPS61031PWPRG4 uses the LBI and LBO pins to implement programmable low-battery detection. The LBI pin compares a scaled-down battery voltage against an internal 500 mV reference with 10 mV hysteresis. When the scaled voltage drops below threshold, the open-drain LBO pin pulls low. A pullup resistor (typically 1 MΩ) is required on LBO to interface with a host MCU - enabling precise battery cutoff (e.g., at 2.8 V) without additional supervisory ICs in systems using the TPS61031PWPRG4.
What package type and thermal characteristics does the TPS61031PWPRG4 use?
The TPS61031PWPRG4 is packaged in a 16-pin TSSOP PowerPAD™ (PWP) measuring 5.00 mm × 4.40 mm. Its exposed PowerPAD™ must be soldered to a thermal pad connected to PGND for effective heat dissipation. With a junction-to-ambient thermal resistance (RθJA) of 46.9°C/W and junction-to-board (RθJB) of 19.4°C/W, it sustains continuous 1 A output at 5 V in ambient temperatures up to 85°C when properly laid out - making it suitable for thermally constrained consumer enclosures using the TPS61031PWPRG4.
Can the TPS61031PWPRG4 operate synchronously with an external clock?
Yes, the TPS61031PWPRG4 supports external synchronization via the SYNC pin. Applying a clean clock signal between 500 kHz and 700 kHz (±20% of nominal 600 kHz) forces the device to switch at that frequency. This capability enables EMI reduction by shifting noise away from sensitive bands and allows timing alignment with other system clocks - useful in multi-rail power architectures where deterministic switching phasing is required alongside the TPS61031PWPRG4.
TPS61031PWPRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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
TPS61031PWPRG4 FAQ
1.How can I place an order for TPS61031PWPRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61031PWPRG4 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 TPS61031PWPRG4 reliable?
The price and inventory of TPS61031PWPRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61031PWPRG4 is usually 5 days.
3.What payment methods are accepted for TPS61031PWPRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61031PWPRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61031PWPRG4?
TPS61031PWPRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61031PWPRG4 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 TPS61031PWPRG4?
For technical support, including TPS61031PWPRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61031PWPRG4 requirements.
6.How does Aetrix verify that TPS61031PWPRG4 is sourced from the original manufacturer or authorized distributors?
All TPS61031PWPRG4 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 TPS61031PWPRG4 meets industry standards.
7.What is the process for return or replacement of TPS61031PWPRG4?
All TPS61031PWPRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS61031PWPRG4, 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 TPS61031PWPRG4 part is unused and in its original packaging.
Return procedure for TPS61031PWPRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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