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Texas Instruments TPS61026DRCT
- Part No.:
- TPS61026DRCT
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS61026DRCT.pdf
- Description:
- IC REG BOOST 5V 1.8A 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,524
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Product details
Overview
TPS61026DRCT from Texas Instruments is a fixed-frequency synchronous boost converter IC designed for battery-powered systems requiring regulated 5 V output. It delivers up to 200 mA at 5 V from input voltages as low as 0.9 V, features 96% peak efficiency, integrated low-battery comparator (LBI/LBO), and operates in down-regulation mode when input exceeds output voltage-enabling use with single-cell Li-ion or multi-cell alkaline/NiMH batteries in portable medical devices and camera flash circuits.
For engineers reviewing the TPS61026DRCT datasheet, TPS61026DRCT pinout, TPS61026DRCT application, or TPS61026DRCT equivalent, key selection criteria include its 5 V fixed output, 1500–1800 mA switch current limit, 480–720 kHz switching frequency, Power Save Mode control via PS pin, and VSON-10 (3 mm × 3 mm) package with separate PGND/GND pins for optimal thermal and noise performance.
Technical Context
The TPS61026DRCT implements a fixed-frequency PWM controller with multiple feed-forward regulation-monitoring VBAT, VOUT, and NMOS switch voltage drop to directly adjust duty cycle without relying solely on slow error-amplifier feedback. Its synchronous rectification uses integrated N-channel and P-channel MOSFETs, eliminating external Schottky diodes and enabling 96% efficiency.
It supports automatic down-regulation mode when VBAT ≥ VOUT (e.g., 4.2 V Li-ion → 5 V output), where the PMOS rectifier acts as a linear pass element; this mode activates above ~VOUT + 50 mV and deactivates below it. Thermal protection triggers at 140°C with 20°C hysteresis, and undervoltage lockout disables operation below ~0.8 V on VBAT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5 V - eliminates need for external feedback resistors; stable across load and line variations. |
| Input Voltage Range | 0.9 V to 5.5 V - supports deep-discharged single-cell alkaline (0.9 V) and fully charged Li-ion (4.2 V) without external LDO. |
| Switch Current Limit | 1500 mA (typ) - enables ≥200 mA output at 5 V with margin for inductor saturation and PCB trace losses. |
| Efficiency | Up to 96% - achieved via synchronous rectification; maintains >85% efficiency at 10 mA load with 2.4 V input → 5 V output. |
| Quiescent Current | 25 µA (typ) - minimizes battery drain in standby; drops to 0.1 µA in shutdown mode. |
| Switching Frequency | 480–720 kHz - balances inductor size (6.8 µH typical) and EMI; fixed-frequency operation enabled by pulling PS high. |
| Low-Battery Detection | 500 mV threshold at LBI pin - programmable via resistor divider; open-drain LBO output signals battery depletion. |
Pinout & Package
The TPS61026DRCT is housed in a thermally enhanced 3 mm × 3 mm VSON-10 PowerPAD™ package (DRC suffix), with exposed thermal pad soldered to PGND for efficient heat dissipation. Pin 1 is EN; PowerPAD must be connected to PGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable input | Active-high logic: tie to VBAT to enable, GND to disable; controls full shutdown including LBO and internal bias. |
| VOUT (Pin 2) | Regulated output | 5 V power rail output; requires 2.2 µF ceramic + 47 µF tantalum for stability and transient response. |
| FB (Pin 3) | Feedback input | Internally tied to 5 V reference; not used in fixed-output TPS61026DRCT-leave unconnected or grounded per TI design guidance. |
| LBO (Pin 4) | Low-battery open-drain output | Active-low flag; requires external 1 MΩ pull-up to indicate battery voltage below programmed LBI threshold. |
| GND (Pin 5) | Logic ground | Reference for EN, PS, LBI, FB; must be star-connected near PGND to minimize noise coupling into control circuitry. |
| VBAT (Pin 6) | Battery input | Main power input (0.9–5.5 V); decoupled with 10 µF ceramic close to pin; UVLO triggers at ~0.8 V. |
| LBI (Pin 7) | Low-battery comparator input | Accepts scaled battery voltage; threshold = 500 mV ±10 mV hysteresis; must not float-tie to GND if unused. |
| PS (Pin 8) | Power Save Mode control | Pull to GND for automatic light-load efficiency optimization; pull to VBAT to force fixed-frequency PWM operation. |
| SW (Pin 9) | Boost switch node | Connects to inductor and catch diode (integrated PMOS); high dv/dt node-requires tight layout and ground shielding. |
| PGND (Pin 10) | Power ground | Source of NMOS switch and thermal pad connection; separate from logic GND to prevent ground bounce in high-current paths. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated N- and P-MOSFETs replace Schottky diode-reducing conduction loss and enabling 96% peak efficiency. |
| Down-regulation capability | Regulates 5 V output even when VBAT ≥ VOUT (e.g., 4.2 V Li-ion → 5 V), avoiding need for buck-boost topology in mixed-voltage battery systems. |
| Load disconnect in shutdown | Internal circuit isolates VOUT from VBAT during EN = low-prevents battery drain through output capacitors or downstream loads. |
| Integrated anti-ringing switch | Clamps SW node to VBAT during discontinuous conduction mode-suppressing EMI without external snubbers or ferrite beads. |
| Separate GND/PGND pins | Prevents control-loop noise injection from high di/dt power paths-critical for stable regulation under dynamic load transients. |
Applications
| Portable Medical Sensors | Camera Flash LED Drivers |
|---|---|
Use Scenario: Wearable pulse oximeter powered by single AAA alkaline cell, operating down to 0.9 V while delivering stable 5 V to analog front-end and BLE radio. IC Role / Device Role / Timing Role: Primary DC-DC power supply regulating 5 V rail; manages battery discharge curve and provides LBO signal for low-power alert before shutdown. Use Value: Enables >100 hours runtime from one AAA cell; down-regulation mode allows direct use of fresh 1.5 V cells without intermediate LDO, reducing BOM count. | Use Scenario: Smartphone rear-camera module requiring 5 V/500 mA burst for white LED flash, supplied from shared 3.7 V Li-ion battery rail. IC Role / Device Role / Timing Role: Boost converter generating 5 V flash rail; PS pin synchronized to camera shutter timing to force fixed-frequency mode during flash pulse for predictable EMI profile. Use Value: Delivers required 500 mA peak with <±3% output accuracy; integrated LBO prevents flash activation when battery falls below safe operating voltage. |
| Handheld Barcode Scanners | Industrial Handheld Terminals |
Use Scenario: Ruggedized scanner using two NiMH cells (2.4 V nominal) powering 5 V laser diode driver and CMOS image sensor. IC Role / Device Role / Timing Role: Main system power regulator; LBI pin configured for 2.0 V battery cutoff to preserve cell longevity and avoid deep discharge damage. Use Value: Maintains 5 V regulation across full 2.4 V → 1.8 V battery range; 25 µA quiescent current extends standby time between scans. | Use Scenario: Warehouse terminal with three AA alkaline cells (4.5 V fresh, 3.0 V depleted) powering 5 V display backlight, RFID reader, and ARM Cortex-M4 MCU. IC Role / Device Role / Timing Role: Central power management IC; uses down-regulation mode to sustain 5 V output even at 4.5 V input, eliminating need for buck-boost fallback. Use Value: Eliminates voltage droop during high-current RFID transmission; thermal pad (PowerPAD) ensures reliable operation at 85°C ambient in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61027DRCT | Fixed 5 V output, 1800 mA switch current limit vs. TPS61026DRCT's 1500 mA; identical package and pinout. | Supports higher peak output current (≥250 mA at 5 V), better suited for applications with transient-heavy loads like motor drivers or RF power amplifiers. | Select TPS61027DRCT when sustained >200 mA or higher inrush current is required; verify inductor saturation rating and thermal margin. |
| TPS61025DRCT | Fixed 3.3 V output, same 1500 mA switch limit and VSON-10 package; shares identical control architecture and feature set. | Targets 3.3 V logic rails (MCUs, sensors, radios); eliminates need for post-regulation LDO when 3.3 V is system primary voltage. | Choose TPS61025DRCT for 3.3 V systems; avoids efficiency loss and board space of external LDO; pin-compatible drop-in replacement. |
Compared with TPS61027DRCT and TPS61025DRCT, the TPS61026DRCT offers optimal balance of 5 V output, 1500 mA current capability, and thermal performance in the 3 mm × 3 mm VSON package-making it ideal for cost-sensitive, space-constrained 5 V portable designs where peak load remains ≤200 mA.
Availability
TPS61026DRCT is available at Aetrix Electronics and suitable for portable medical sensors, camera flash LED drivers, handheld barcode scanners, and industrial handheld terminals requiring stable component supply across extended production lifecycles.
Supply support for TPS61026DRCT 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 over 50 years of innovation in energy-efficient power conversion.
The TPS6102x family was engineered for ultra-low-input-voltage battery-powered applications-delivering high-efficiency boost conversion in miniature packages for space- and runtime-constrained portable electronics.
FAQ
What is the exact output voltage of the TPS61026DRCT?
TPS61026DRCT provides a factory-trimmed fixed 5 V output with ±3% total accuracy across line, load, and temperature. This specification includes both line regulation (0.6%) and load regulation (0.6%), ensuring stable 5 V delivery from 0.9 V to 5.5 V input and up to 200 mA load current without external feedback components.
Does the TPS61026DRCT support input voltages higher than its 5 V output?
Yes, the TPS61026DRCT supports down-regulation mode when input voltage exceeds 5 V-such as from a fully charged 4.2 V Li-ion cell. In this mode, the internal PMOS rectifier operates as a linear pass element to maintain 5 V regulation. Operation is stable as long as VBAT stays within the 0.9 V to 5.5 V absolute maximum range specified for TPS61026DRCT.
How is low-battery detection implemented on the TPS61026DRCT?
The TPS61026DRCT uses the LBI pin to accept a scaled-down battery voltage via an external resistor divider, comparing it to an internal 500 mV reference. When the divided voltage falls below 500 mV, the open-drain LBO pin pulls low. The LBI pin includes 10 mV hysteresis, and must never be left floating-TI recommends tying it to GND if unused. This function is only active when EN is high.
What is the purpose of separate GND and PGND pins on the TPS61026DRCT?
The TPS61026DRCT separates logic ground (GND, Pin 5) from power ground (PGND, Pin 10) to isolate sensitive control circuitry from high di/dt switching currents. GND serves EN, PS, LBI, and FB references, while PGND connects to the NMOS switch source and PowerPAD thermal pad. This separation prevents ground bounce from corrupting regulation accuracy and improves EMI performance in noisy portable environments.
Can the TPS61026DRCT be forced into fixed-frequency PWM mode?
Yes, the TPS61026DRCT enters fixed-frequency PWM mode when the PS pin (Pin 8) is pulled high to VBAT. In this configuration, it operates continuously at 480–720 kHz regardless of load, improving EMI predictability for timing-critical applications like camera flash synchronization. When PS is grounded, it defaults to Power Save Mode-switching only as needed to maintain regulation, optimizing light-load efficiency.
TPS61026DRCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN 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):
- 0.9V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1.8A (Switch)
- Frequency - Switching:
- 600kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS61026DRCT FAQ
1.How can I place an order for TPS61026DRCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61026DRCT 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 TPS61026DRCT reliable?
The price and inventory of TPS61026DRCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61026DRCT is usually 5 days.
3.What payment methods are accepted for TPS61026DRCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61026DRCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61026DRCT?
TPS61026DRCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61026DRCT 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 TPS61026DRCT?
For technical support, including TPS61026DRCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61026DRCT requirements.
6.How does Aetrix verify that TPS61026DRCT is sourced from the original manufacturer or authorized distributors?
All TPS61026DRCT 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 TPS61026DRCT meets industry standards.
7.What is the process for return or replacement of TPS61026DRCT?
All TPS61026DRCT units undergo pre-shipment inspection (PSI). If there is an issue with TPS61026DRCT, 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 TPS61026DRCT part is unused and in its original packaging.
Return procedure for TPS61026DRCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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