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Texas Instruments TPS61027DRCRG4
- Part No.:
- TPS61027DRCRG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS61027DRCRG4.pdf
- Description:
- IC REG BOOST 5V 1.5A 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,860
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Product details
Overview
TPS61027DRCRG4 from Texas Instruments is a synchronous boost DC-DC converter optimized for single-cell Li-ion, alkaline, NiCd, or NiMH battery-powered systems. It delivers up to 200 mA at 5 V output from a 0.9–6.5 V input, features 96% peak efficiency, 25 µA quiescent current, and integrated low-battery detection with LBI/LBO pins - deployed in portable medical devices and camera LED flash circuits.
For engineers reviewing the TPS61027DRCRG4 datasheet, TPS61027DRCRG4 pinout, TPS61027DRCRG4 application, or TPS61027DRCRG4 equivalent, key selection criteria include fixed 5-V output, 1500-mA switch current limit, down-regulation capability when VIN ≥ VOUT, thermal shutdown (140°C), and VSON-10 (3 mm × 3 mm) package compatibility with high-density PCB layouts.
Technical Context
The TPS61027DRCRG4 implements a fixed-frequency (480–720 kHz) PWM controller with synchronous rectification using integrated N- and P-channel MOSFETs. Input voltage, output voltage, and NMOS switch voltage drop are fed forward directly into regulation - bypassing slow error-amplifier loops for rapid duty-cycle response to load or input transients.
It supports three functional modes: standard boost, automatic down-regulation (when VIN ≥ VOUT), and Power Save Mode (enabled via PS pin). Down-regulation maintains 5-V regulation even with fully charged Li-ion (4.2 V) input, while Power Save Mode improves light-load efficiency by pulsing operation instead of fixed-frequency switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5 V - eliminates external feedback resistors and simplifies layout for stable USB-compatible rail generation. |
| Input Voltage Range | 0.9 V to 6.5 V - supports deep discharge of single-cell alkaline (down to 0.9 V) and full range of Li-ion (3.0–4.2 V). |
| Switch Current Limit | 1500 mA - enables sustained 200 mA output at 5 V with margin for transient loads and inductor saturation headroom. |
| Peak Efficiency | 96% - achieved via synchronous rectification (replacing Schottky diode), reducing conduction loss and thermal stress. |
| Quiescent Current | 25 µA (typ) - extends battery life in always-on portable devices such as glucose meters or Bluetooth trackers. |
| Shutdown Current | 0.1–1 µA - ensures near-zero battery drain during system sleep, critical for long-term unattended operation. |
| Oscillator Frequency | 480–720 kHz - balances EMI performance and inductor size; supports compact 6.8 µH external inductor. |
Pinout & Package
VSON-10 (DRC) package: 3.00 mm × 3.00 mm body, PowerPAD™ exposed thermal pad soldered to PGND for enhanced heat dissipation (RθJA = 47.2°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable control input | Active-high logic: tie to VBAT to enable; GND disables converter and disconnects load from battery. |
| 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 | Not used - internal resistor divider sets fixed 5-V output; leave floating or connect to GND per datasheet guidance. |
| LBO (Pin 4) | Low-battery open-drain output | Active-low flag indicating battery voltage below user-programmed threshold; requires external 1-MΩ pull-up. |
| GND (Pin 5) | Logic ground reference | Reference for all control circuitry; must be connected to PGND at single point near GND pin to avoid ground shift. |
| VBAT (Pin 6) | Main input supply | Accepts 0.9–6.5 V; includes undervoltage lockout (0.8 V threshold) to prevent malfunction during deep discharge. |
| LBI (Pin 7) | Low-battery comparator input | Programmable threshold (500 mV typical); use resistor divider from VBAT to set battery cutoff voltage (e.g., 3.0 V). |
| PS (Pin 8) | Power Save mode control | Low = enable pulse-mode for high light-load efficiency; high = force fixed-frequency operation (disabled in down-regulation). |
| SW (Pin 9) | Boost switch node | Connects to inductor and catch diode (integrated PMOS); requires careful routing to minimize EMI and ringing. |
| PGND (Pin 10) | Power ground | Source connection for NMOS switch; must be tied to GND at single point and thermally coupled to PowerPAD™. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated anti-ringing switch | Dampens SW-node oscillation in discontinuous conduction mode, reducing radiated EMI without external snubbers. |
| Load disconnect during shutdown | Isolates output from battery via backgate control of high-side PMOS - prevents battery drain with no external FET needed. |
| Down-regulation capability | Maintains regulated 5-V output even when input exceeds 5 V (e.g., 4.2-V Li-ion), enabling single-rail power for mixed-voltage systems. |
| Thermal shutdown with hysteresis | Triggers at 140°C junction temperature and releases at 120°C, preventing thermal runaway during overload or poor heatsinking. |
| Low-battery comparator with hysteresis | 500-mV threshold with 10-mV hysteresis on LBI pin; enables precise, noise-immune battery monitoring without external comparators. |
Applications
| Portable Medical Sensors | USB-Powered Peripherals |
|---|---|
|
Use Scenario: Continuous glucose monitor powered by a single AA alkaline cell, operating down to 0.9 V. IC Role / Device Role / Timing Role: Primary 5-V power rail generator with battery-life extension via 25-µA quiescent current and load disconnect. Use Value: Enables >12-month battery life while maintaining USB-compliant 5-V output for BLE radio and sensor interface. |
Use Scenario: Compact USB-C audio adapter drawing 180 mA at 5 V from a 3.3-V host rail. IC Role / Device Role / Timing Role: Step-up converter providing isolated 5-V bus for USB enumeration and charging negotiation. Use Value: Eliminates need for separate 5-V supply; down-regulation handles host rail fluctuations without output droop. |
| Camera LED Flash Drivers | Industrial Handheld Scanners |
|
Use Scenario: White LED flash requiring 5 V/1.2 A pulsed drive, powered by 3.7-V Li-ion battery. IC Role / Device Role / Timing Role: High-efficiency boost stage feeding LED driver IC; supports burst-mode flash timing. Use Value: Delivers 96% efficiency at 200 mA continuous, minimizing thermal rise during repeated flash activation. |
Use Scenario: Rugged barcode scanner using two NiMH cells (2.4 V nominal) powering 5-V MCU, imager, and RF module. IC Role / Device Role / Timing Role: Main system power regulator with low-battery warning (LBI/LBO) for user alert before shutdown. Use Value: Extends usable runtime by 22% vs. non-synchronous boosters; programmable LBI enables precise end-of-life detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61026DRCR | Fixed 5-V output, 1800-mA switch current limit, 0.9–5.5 V input range | Higher peak current supports >250 mA continuous loads; lower max input voltage excludes 6.5-V alkaline stack use | Select when higher output current is required and input stays ≤5.5 V; verify thermal design for 1800-mA switch stress. |
| TPS61025DRCR | Fixed 3.3-V output, 1500-mA switch current limit, 0.9–6.5 V input range | Matches TPS61027DRCRG4's current rating and input range but targets 3.3-V logic rails instead of 5-V USB/peripherals | Choose for 3.3-V MCU or sensor subsystems; not suitable for 5-V applications without post-regulation. |
Compared with TPS61027DRCRG4, TPS61026DRCR offers higher current headroom at reduced input voltage range, while TPS61025DRCR provides identical current and input specs but targets 3.3-V systems - making TPS61027DRCRG4 the optimal choice for fixed 5-V, wide-input, battery-critical designs.
Availability
TPS61027DRCRG4 is available at Aetrix Electronics and suitable for portable medical sensors, USB-powered peripherals, camera LED flash drivers, and industrial handheld scanners requiring stable component supply across extended production lifecycles.
Supply support for TPS61027DRCRG4 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 delivering analog, embedded processing, and connectivity solutions with over 50 years of power management innovation.
The TPS6102x family was designed specifically for ultra-low-power, high-efficiency boost conversion in space-constrained battery-powered devices - emphasizing quiescent current optimization, integrated protection, and seamless integration with single-cell chemistries.
FAQ
What is the output voltage configuration of the TPS61027DRCRG4?
The TPS61027DRCRG4 features a factory-trimmed fixed 5-V output. Unlike adjustable variants (e.g., TPS61020), it does not require external feedback resistors - simplifying design, reducing BOM count, and improving output accuracy (±3% total regulation including line/load effects). This makes TPS61027DRCRG4 ideal for USB-hosted peripherals and 5-V logic interfaces where precision and layout simplicity are critical.
Does the TPS61027DRCRG4 support input voltages higher than its 5-V output?
Yes, the TPS61027DRCRG4 supports down-regulation: it maintains regulated 5-V output even when input exceeds 5 V (e.g., 4.2-V Li-ion). In this mode, the internal PMOS rectifier operates as a linear pass element, dropping excess voltage - enabling single-rail power for mixed-voltage systems. Note that power dissipation increases in down-regulation, so thermal design must account for worst-case VIN–VOUT × IOUT.
How does the low-battery detection work on the TPS61027DRCRG4?
The TPS61027DRCRG4 uses the LBI pin to monitor battery voltage via an external resistor divider, comparing it to an internal 500-mV threshold. When the scaled voltage drops below threshold, LBO (open-drain) pulls low. Detection is active only when EN = high. LBI includes 10-mV hysteresis to prevent chatter; unused LBI must be tied to GND or VBAT - never left floating - to ensure reliable operation.
What is the purpose of the PS pin on the TPS61027DRCRG4?
The PS (Power Save) pin on the TPS61027DRCRG4 controls light-load efficiency mode. When PS = GND, the device enters pulse-frequency modulation (PFM) mode - delivering energy in bursts to maintain regulation while minimizing switching losses. When PS = VBAT, fixed-frequency PWM is enforced. In down-regulation mode, Power Save is always active and cannot be disabled.
Can the TPS61027DRCRG4 be used with a 0.9-V input source?
Yes, the TPS61027DRCRG4 starts up and operates continuously down to 0.9 V input - verified across temperature and load conditions. Its 25-µA quiescent current and ability to regulate 5 V from sub-1-V sources make it uniquely suited for deeply discharged alkaline/NiMH cells in long-life portable equipment. Startup current is limited to 40% of nominal switch current to protect weak batteries during initial charge.
TPS61027DRCRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.9V
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1.5A (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)
TPS61027DRCRG4 FAQ
1.How can I place an order for TPS61027DRCRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61027DRCRG4 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 TPS61027DRCRG4 reliable?
The price and inventory of TPS61027DRCRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61027DRCRG4 is usually 5 days.
3.What payment methods are accepted for TPS61027DRCRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61027DRCRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61027DRCRG4?
TPS61027DRCRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61027DRCRG4 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 TPS61027DRCRG4?
For technical support, including TPS61027DRCRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61027DRCRG4 requirements.
6.How does Aetrix verify that TPS61027DRCRG4 is sourced from the original manufacturer or authorized distributors?
All TPS61027DRCRG4 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 TPS61027DRCRG4 meets industry standards.
7.What is the process for return or replacement of TPS61027DRCRG4?
All TPS61027DRCRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS61027DRCRG4, 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 TPS61027DRCRG4 part is unused and in its original packaging.
Return procedure for TPS61027DRCRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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