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Texas Instruments TPS61032RSAR
- Part No.:
- TPS61032RSAR
- Manufacturer:
- Texas Instruments
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
TPS61032RSAR.pdf
- Description:
- IC REG BOOST 5V 3.6A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,742
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Product details
Overview
TPS61032RSAR from Texas Instruments is a synchronous boost DC-DC converter IC designed for battery-powered portable systems. It delivers up to 1000 mA output current at 5 V from input voltages as low as 1.8 V, features 96% peak efficiency, integrated 4-A switch, and adjustable output voltage via FB pin with 500 mV reference. It is used in MP3 players, PDAs, and other single-cell Li-ion or dual-cell alkaline/NiMH powered devices.
For engineers reviewing the TPS61032RSAR datasheet, TPS61032RSAR pinout, TPS61032RSAR application, or TPS61032RSAR equivalent, key selection considerations include its 600 kHz fixed-frequency PWM operation, Power Save mode for light-load efficiency, low-battery comparator (LBI/LBO), load disconnect during shutdown, and QFN-16 thermal performance (RθJA = 35.5°C/W).
Technical Context
The TPS61032RSAR implements a fixed-frequency, multiple feedforward PWM controller with synchronous rectification using integrated N- and P-channel MOSFETs. Input voltage, output voltage, and NMOS switch voltage drop are monitored directly to adjust duty cycle, minimizing reliance on slow error-amplifier loop response.
It integrates a low-battery detector with 500 mV LBI threshold and 10 mV hysteresis, an antiringing switch to suppress SW-node oscillation in discontinuous conduction mode, and undervoltage lockout (~1.6 V) to prevent malfunction during deep discharge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Up to 1000 mA at 5 V output - supports high-power peripherals in portable systems without external current boosting. |
| Input Voltage Range | 1.8 V to 5.5 V - compatible with one-cell Li-ion (2.5–4.2 V), two/three-cell alkaline/NiMH (1.8–5.5 V), and backup power rails. |
| Switch Current Limit | 4000 mA typical - enables robust startup and transient handling with 6.8 µH inductor and 10 µF input capacitor. |
| Feedback Reference | 500 mV ±10 mV - allows precise adjustable output (e.g., 3.3 V, 5.0 V) using standard resistor dividers with minimal FB pin current (0.01 µA). |
| Switching Frequency | 600 kHz nominal - balances EMI, inductor size, and efficiency; supports external synchronization from 500–700 kHz. |
| Quiescent Current | 20 µA typical - extends battery life in always-on or low-duty-cycle applications like sensor nodes and standby subsystems. |
| Thermal Resistance | RθJA = 35.5°C/W (QFN-16) - enables >1 W continuous power dissipation with minimal PCB copper, critical for compact portable layouts. |
Pinout & Package
TPS61032RSAR is housed in a thermally enhanced 4 mm × 4 mm QFN-16 package (RSA) with exposed PowerPAD™ soldered to PGND for optimal heat transfer. The package includes three PGND pins (pins 5, 6, 7), dual VOUT pins (1, 15, 16), and separate GND (pin 13) for control logic reference.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 11) | Enable input | Active-high digital control: drives internal regulator ON/OFF; pulls to VBAT for operation, GND for full shutdown with load disconnect. |
| FB (Pin 14) | Voltage feedback input | Monitors output via resistor divider; regulates output by maintaining 500 mV at this node - enables programmable output from 1.8 V to 5.5 V. |
| GND (Pin 13) | Control ground | Reference for all logic, error amplifier, and comparator circuits - must be connected separately from PGND at single point near GND pin. |
| LBI (Pin 9) | Low-battery comparator input | Accepts scaled battery voltage (e.g., via R1/R2 divider); triggers LBO when input drops below 500 mV ±10 mV hysteresis. |
| LBO (Pin 12) | Low-battery open-drain output | Active-low flag for system MCU; requires external pullup (e.g., 1 MΩ to VOUT); high-impedance when EN = low. |
| PGND (Pins 5, 6, 7) | Power ground | Return path for high-current SW and VOUT paths - must be tied to PowerPAD™ and isolated from GND except at single-point connection. |
| SYNC (Pin 10) | Mode control/synchronization | Low = enable Power Save mode; high = fixed-frequency operation; external clock (500–700 kHz) forces synchronization. |
| SW (Pins 3, 4) | Boost switch node | Connects to inductor and diode/switch; carries high dI/dt - requires short, wide traces and local ceramic decoupling (10 µF). |
| VBAT (Pin 8) | Main supply input | Accepts 1.8–5.5 V battery source; includes UVLO (~1.6 V) to prevent unstable operation during deep discharge. |
| VOUT (Pins 1, 15, 16) | Regulated output | Delivers stable boosted voltage; three pins reduce IR drop and improve current sharing - supports ≥1 A continuous load. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated N- and P-MOSFETs replace Schottky diode, achieving 96% peak efficiency and eliminating reverse recovery losses. |
| Load disconnect during shutdown | Special circuit isolates VOUT from VBAT when EN = low - prevents battery drain even with output capacitors charged. |
| Antiringing switch | Clamps SW node to VBAT during DCM, suppressing parasitic ringing and reducing radiated EMI without external snubbers. |
| Power Save mode | Auto-switches to pulse-skipping at light loads (<10 mA), maintaining >85% efficiency down to µA-level output currents. |
| Thermal protection | Overtemperature shutdown at 140°C with 20°C hysteresis - protects against sustained overload or poor PCB heatsinking. |
Applications
| Portable Audio Players | Handheld Medical Devices |
|---|---|
|
Use Scenario: MP3 player powered by single-cell Li-ion battery (2.7–4.2 V) requiring stable 5 V rail for USB OTG, DAC, and display backlight. IC Role / Device Role / Timing Role: Primary boost regulator generating regulated 5 V from declining battery voltage; manages dynamic load steps during audio playback and file transfer. Use Value: Delivers 1000 mA at >90% efficiency across full battery range, enabling >10-hour playback while minimizing heat in sealed enclosure. |
Use Scenario: Battery-operated glucose meter with LCD, Bluetooth LE, and precision analog front-end requiring clean 3.3 V and 5 V supplies. IC Role / Device Role / Timing Role: Dual-rail power source: adjustable output set to 3.3 V for MCU/analog section, with LBO monitoring battery health before clinical measurement. Use Value: Low 20 µA quiescent current extends shelf life; load disconnect prevents false low-battery alerts during sleep mode. |
| Industrial Handheld Scanners | Wireless Sensor Nodes |
|
Use Scenario: Rugged barcode scanner using dual-cell NiMH (2.4–3.6 V) powering laser diode driver, CMOS imager, and BLE radio. IC Role / Device Role / Timing Role: High-current boost stage supplying 5 V @ 800 mA peak for laser pulsing; SYNC pin synchronized to system clock to avoid RF interference. Use Value: 4-A switch handles 200-ms laser pulses without dropout; QFN-16 thermal performance sustains operation in 60°C ambient. |
Use Scenario: LoRaWAN node powered by two AA alkaline cells (1.8–3.0 V) needing regulated 3.3 V for microcontroller and transceiver. IC Role / Device Role / Timing Role: Always-on power manager with programmable LBI threshold (e.g., 2.2 V) triggering graceful shutdown before sensor data loss. Use Value: Power Save mode maintains >88% efficiency at 50 µA load; shutdown current <1 µA preserves battery for multi-year deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61030PWP | Same architecture and specs, but in 5.0 mm × 4.4 mm TSSOP-16 package with higher RθJA (46.9°C/W) and no PowerPAD™. | Less suitable for high-ambient or high-power-density designs; requires larger PCB area and more thermal vias for equivalent thermal performance. | Select TPS61030PWP only if TSSOP footprint is mandated and thermal margin >15°C is available. |
| MT3608 | Lower-cost 2-A boost IC with 2 MHz switching, no LBO/LBI, no Power Save mode, and 1.2 MHz typical frequency - lacks battery supervision and light-load optimization. | Applicable where cost dominates and battery monitoring or ultra-low Iq is not required; unsuitable for medical or long-life battery applications. | Choose MT3608 for consumer accessories with fixed 5 V output and no battery health management needs. |
Compared with TPS61032RSAR, TPS61030PWP trades thermal performance for legacy package compatibility, while MT3608 sacrifices supervision features and efficiency optimization for cost and integration density - making TPS61032RSAR the preferred choice for battery-critical, thermally constrained, or long-duration portable systems.
Availability
TPS61032RSAR is available at Aetrix Electronics and suitable for portable medical devices, industrial handheld scanners, wireless sensor nodes, and consumer audio equipment requiring stable component supply, extended battery life, and reliable thermal management.
Supply support for TPS61032RSAR 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-powered system solutions.
The TPS6103x product line was designed specifically for portable electronics requiring high-efficiency, small-footprint boost conversion from single- or dual-cell batteries - emphasizing low quiescent current, integrated supervision, and robust thermal behavior in space-constrained layouts.
FAQ
What is the maximum output current capability of the TPS61032RSAR under real-world conditions?
The TPS61032RSAR delivers up to 1000 mA at 5 V output when input voltage is ≥2.4 V and ambient temperature is ≤60°C. At 1.8 V input, maximum output current drops to ~650 mA due to reduced headroom and increased conduction losses. Full 1-A capability requires proper PCB layout with thermal vias under the PowerPAD™ and adequate input/output capacitance (10 µF ceramic + 220 µF tantalum).
How does the TPS61032RSAR implement load disconnect during shutdown?
The TPS61032RSAR uses a dedicated circuit that disconnects the cathode of the internal high-side PMOS backgate diode from its source when EN is low. This prevents reverse current flow from VOUT to VBAT, ensuring zero load current during shutdown. Unlike conventional synchronous rectifiers, no external MOSFET or ideal diode controller is needed - the feature is fully integrated and active within the TPS61032RSAR itself.
Can the TPS61032RSAR be synchronized to an external clock, and what are the valid frequency and duty-cycle ranges?
Yes, the TPS61032RSAR accepts an external clock signal on the SYNC pin to force operation at a user-defined frequency between 500 kHz and 700 kHz - a ±20% window around its nominal 600 kHz. The input clock must have a duty cycle between 30% and 70% to ensure reliable edge detection and stable phase alignment. Outside this range, the device may default to internal oscillator or exhibit erratic switching.
What is the exact function of the LBI and LBO pins on the TPS61032RSAR, and how is the threshold programmed?
The LBI pin accepts a scaled-down battery voltage (e.g., via R1/R2 divider), and the internal comparator triggers LBO - an open-drain output - when LBI falls below 500 mV ±10 mV hysteresis. To set a 2.8 V battery cutoff, use R1 = 390 kΩ and R2 = 200 kΩ so that 2.8 V × [200/(390+200)] ≈ 0.5 V. The TPS61032RSAR's LBO remains high-impedance when EN = low, preventing false alerts during system sleep.
Does the TPS61032RSAR require external compensation components, and what is its stability behavior with standard output capacitors?
No, the TPS61032RSAR uses internal compensation and is optimized for stability with standard ceramic output capacitors (≥2.2 µF X5R/X7R) and low-ESR bulk capacitance (e.g., 220 µF tantalum). Its feedforward control architecture reduces phase-margin sensitivity, eliminating need for external RC networks. Verified stable across 1–100 µF output capacitance range and 10–100 mΩ ESR - simplifying design and reducing BOM count for the TPS61032RSAR.
TPS61032RSAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-VQFN Exposed Pad
- 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):
- 5V
- 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-QFN (4x4)
TPS61032RSAR FAQ
1.How can I place an order for TPS61032RSAR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61032RSAR 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 TPS61032RSAR reliable?
The price and inventory of TPS61032RSAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61032RSAR is usually 5 days.
3.What payment methods are accepted for TPS61032RSAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61032RSAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61032RSAR?
TPS61032RSAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61032RSAR 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 TPS61032RSAR?
For technical support, including TPS61032RSAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61032RSAR requirements.
6.How does Aetrix verify that TPS61032RSAR is sourced from the original manufacturer or authorized distributors?
All TPS61032RSAR 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 TPS61032RSAR meets industry standards.
7.What is the process for return or replacement of TPS61032RSAR?
All TPS61032RSAR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61032RSAR, 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 TPS61032RSAR part is unused and in its original packaging.
Return procedure for TPS61032RSAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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