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Texas Instruments TPS61029QDRCRQ1
- Part No.:
- TPS61029QDRCRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS61029QDRCRQ1.pdf
- Description:
- IC REG BOOST ADJ 1.8A 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,310
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Product details
Overview
TPS61029QDRCRQ1 from Texas Instruments is an automotive-grade synchronous boost converter IC designed for battery-powered systems requiring regulated output voltage with input as low as 0.9 V. It delivers up to 200 mA at adjustable output (1.8–5.5 V), features 96% peak efficiency, 25 µA quiescent current, and integrated low-battery comparator (LBI/LBO) - used in portable medical devices and automotive infotainment power rails.
For engineers reviewing the TPS61029QDRCRQ1 datasheet, TPS61029QDRCRQ1 pinout, TPS61029QDRCRQ1 application, or TPS61029QDRCRQ1 equivalent, key selection considerations include its 1800 mA switch current limit, Power Save Mode operation down to µA loads, fixed 600 kHz PWM frequency (disableable), down-regulation capability when VIN ≥ VOUT, and AEC-Q100 Grade 1 qualification.
Technical Context
The TPS61029QDRCRQ1 implements a fixed-frequency, multiple feedforward PWM controller with synchronous rectification using integrated NMOS and PMOS switches. Input voltage, output voltage, and NMOS switch voltage drop are directly monitored to adjust duty cycle without relying solely on the error amplifier loop - enabling fast transient response and stable regulation across wide input/output ratios.
It supports three functional modes: standard PWM (600 kHz typical), Power Save Mode (variable frequency, high light-load efficiency), and automatic down-regulation mode when VIN ≥ VOUT. The device integrates undervoltage lockout (0.8 V), overtemperature protection (140 °C), load disconnect during shutdown, and anti-ringing switch to suppress SW-node oscillations in discontinuous conduction mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.9 V to 5.5 V - enables operation from single-cell alkaline (down to 0.9 V) or Li-ion (up to 4.2 V) without external LDO pre-regulation. |
| Output Voltage Range | 1.8 V to 5.5 V (adjustable via FB pin) - supports 3.3 V microcontroller rails, 5 V USB peripherals, or 1.8 V logic interfaces. |
| Switch Current Limit | 1800 mA (typical) - sets maximum inductor peak current, enabling robust 200 mA output at 3.3 V even with 0.9 V input. |
| Quiescent Current | 25 µA (typical) - minimizes battery drain in always-on systems such as telematics or sensor nodes. |
| Efficiency | 96% (peak) - achieved via synchronous rectification (no external Schottky diode required) and low RDS(on) switches (260/290 mΩ). |
| Switching Frequency | 600 kHz (typical, fixed) - allows compact 6.8 µH inductor and ceramic output capacitors; disableable via PS pin for forced PWM mode. |
| AEC-Q100 Grade | Grade 1 (–40 °C to +125 °C TJ) - qualified for under-hood and dashboard-mounted automotive applications. |
Pinout & Package
TPS61029QDRCRQ1 is housed in a thermally enhanced 3 mm × 3 mm VSON-10 (DRC) package with exposed PowerPAD™ for improved thermal dissipation. The package requires soldering the PowerPAD™ to PGND on PCB for optimal junction-to-board thermal resistance (21.6 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 1) | Enable control input | Active-high logic: tie to VBAT to enable; GND to fully disconnect load and reduce shutdown current to 0.1 µA. |
| VOUT (Pin 2) | Regulated boost output | Delivers programmable DC output; requires 2.2 µF ceramic + 47 µF tantalum for stability and ripple suppression. |
| FB (Pin 3) | Feedback input | Senses output via resistor divider; internal reference = 500 mV - sets VOUT = 500 mV × (1 + R3/R4). |
| LBO (Pin 4) | Low-battery open-drain output | Active-low flag (0.04 V @ 100 µA) - requires external 1 MΩ pull-up; signals when battery voltage drops below programmed threshold. |
| GND (Pin 5) | Logic ground reference | Reference for all control circuitry; must be connected at single point near PGND to avoid ground shift errors. |
| VBAT (Pin 6) | Main input supply | Accepts 0.9–5.5 V; includes UVLO (0.8 V) to prevent startup from depleted batteries. |
| LBI (Pin 7) | Low-battery comparator input | Programmable threshold (500 mV ±10 mV hysteresis); connect resistive divider from VBAT to set battery cutoff voltage. |
| PS (Pin 8) | Power Save Mode control | Low = enable variable-frequency light-load mode; high = force fixed 600 kHz PWM - critical for EMI-sensitive designs. |
| SW (Pin 9) | Boost switch node | Connects to inductor and flyback diode (internal PMOS); high dv/dt node - requires tight layout and anti-ringing design. |
| PGND (Pin 10) | Power ground | Source of NMOS switch; separate from logic GND to isolate high-current return paths and maintain regulation accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Down-regulation capability | Maintains regulation even when VIN ≥ VOUT (e.g., 4.2 V Li-ion → 3.3 V rail), eliminating need for buck-boost or LDO post-regulator. |
| Integrated anti-ringing switch | Clamps SW-node ringing to VBAT during DCM, reducing radiated EMI without external snubber components. |
| Load disconnect during shutdown | Isolates output from battery via backgate control of PMOS - prevents battery drain in sleep mode without external MOSFET. |
| Two-ground architecture (GND/PGND) | Separates control and power return paths to eliminate ground bounce, ensuring stable feedback and accurate current limiting. |
| Programmable low-battery detection | Configurable LBI threshold (via resistor divider) and open-drain LBO output enable system-level battery management without MCU intervention. |
Applications
| Portable Medical Sensors | Automotive Infotainment Displays |
|---|---|
Use Scenario: Wearable glucose monitor powered by single alkaline cell with 10-year shelf life requirement. IC Role / Device Role / Timing Role: Primary DC/DC regulator generating stable 3.3 V for ultra-low-power MCU and BLE radio from 0.9–1.5 V battery. Use Value: 25 µA quiescent current extends battery life; down-regulation maintains regulation as battery discharges past nominal output voltage. |
Use Scenario: LCD backlight driver in vehicle head unit where 5 V rail must remain stable despite 12 V battery sag during cranking. IC Role / Device Role / Timing Role: Boost converter supplying 5 V to display controller from 3.3 V domain, with LBO signaling battery health to main ECU. Use Value: 1800 mA switch limit ensures 500 mA peak current delivery; AEC-Q100 Grade 1 guarantees operation at 125 °C junction temperature. |
| Telematics Control Units | Industrial Handheld Scanners |
Use Scenario: Cellular-connected GPS tracker operating from two AA cells in cold environments (–40 °C). IC Role / Device Role / Timing Role: High-efficiency boost IC delivering 3.3 V to modem and GNSS receiver while maintaining regulation down to 0.9 V input. Use Value: 96% peak efficiency minimizes thermal rise in sealed enclosure; UVLO prevents erratic behavior during deep discharge. |
Use Scenario: Barcode scanner with LED flash requiring 5 V pulse from single Li-ion cell. IC Role / Device Role / Timing Role: Adjustable-output boost converter powering white LED array with programmable brightness via FB voltage scaling. Use Value: Adjustable output (1.8–5.5 V) enables direct LED drive without current-limiting resistor; PS pin disables Power Save Mode for consistent flash timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61025QDRCRQ1 | Fixed 3.3 V output; 1500 mA switch current limit | Eliminates FB resistor network but lacks output flexibility; lower peak current limits max output power at low input. | Select when system requires only 3.3 V and space-constrained layout favors fixed-output simplicity. |
| TPS61027QDRCRQ1 | Fixed 5 V output; 1500 mA switch current limit | Optimized for USB-peripheral rails; same thermal profile but reduced headroom for down-regulation vs. TPS61029QDRCRQ1. | Choose for 5 V-only systems needing guaranteed compliance with USB 2.0 voltage tolerance (4.75–5.25 V). |
Compared with TPS61025QDRCRQ1 and TPS61027QDRCRQ1, the TPS61029QDRCRQ1 offers wider output adjustability (1.8–5.5 V), higher switch current (1800 mA), and greater flexibility in battery voltage tracking - making it optimal for multi-rail or evolving voltage requirements in automotive and industrial designs.
Availability
TPS61029QDRCRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, portable medical sensors, and industrial handheld scanners requiring stable component supply with AEC-Q100 qualification and long-term production continuity.
Supply support for TPS61029QDRCRQ1 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 specializing in analog and embedded processing technologies, with leadership in power management ICs for automotive, industrial, and personal electronics markets.
The TPS6102x-Q1 product line was engineered specifically for automotive battery-powered subsystems requiring high efficiency, ultra-low quiescent current, and robust operation across extreme temperature and voltage ranges.
FAQ
What is the minimum input voltage required for TPS61029QDRCRQ1 to start switching?
The TPS61029QDRCRQ1 requires a minimum input voltage of 0.9 V to initiate startup, with a typical undervoltage lockout (UVLO) rising threshold of 1.2 V. Below 0.9 V, the device remains disabled; once VIN exceeds 1.2 V, soft-start begins with precharge current limiting. This enables reliable operation from deeply discharged alkaline or NiMH cells - a key requirement for long-life portable medical and telematics applications using the TPS61029QDRCRQ1.
Can TPS61029QDRCRQ1 regulate output when input voltage exceeds output voltage?
Yes, the TPS61029QDRCRQ1 supports automatic down-regulation mode: when VIN ≥ VOUT, it adjusts the PMOS rectifier's conduction to maintain regulation - for example, delivering stable 3.3 V from a 4.2 V Li-ion cell. This eliminates need for external buck converters or LDOs. However, efficiency decreases in this mode due to increased conduction loss, so thermal design must account for higher power dissipation in the TPS61029QDRCRQ1.
How is the low-battery detection threshold set on TPS61029QDRCRQ1?
The low-battery threshold is set externally using a resistor divider from VBAT to GND, connected to the LBI pin. With an internal 500 mV comparator reference and 10 mV hysteresis, the divider ratio determines cutoff voltage - e.g., R1 = 390 kΩ and R2 = 500 kΩ sets ~3.0 V cutoff. The LBO pin outputs open-drain low when threshold is crossed, requiring a 1 MΩ pull-up. This configuration enables precise, system-configurable battery monitoring without MCU involvement in the TPS61029QDRCRQ1.
What is the purpose of separate GND and PGND pins on TPS61029QDRCRQ1?
GND serves as the reference for all control circuitry (error amplifier, comparators, logic), while PGND carries high pulsed currents from the NMOS switch. Separating them prevents ground bounce from corrupting feedback accuracy or causing instability. PCB layout must connect GND and PGND at a single point near the IC's GND pin - not at the PowerPAD™ - to preserve regulation precision and ensure reliable current limiting in the TPS61029QDRCRQ1.
Does TPS61029QDRCRQ1 require external components for EMI reduction?
No - the TPS61029QDRCRQ1 integrates an anti-ringing switch that clamps SW-node oscillations during discontinuous conduction mode, significantly reducing radiated EMI without external snubbers. Combined with synchronous rectification and optimized gate drive, this allows compliant operation in automotive EMC environments. Layout best practices (short SW traces, proper grounding, and capacitor placement) remain essential, but no additional EMI-suppression components are mandated for the TPS61029QDRCRQ1.
TPS61029QDRCRQ1 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:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.9V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 1.8A (Switch)
- Frequency - Switching:
- 600kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS61029QDRCRQ1 FAQ
1.How can I place an order for TPS61029QDRCRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61029QDRCRQ1 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 TPS61029QDRCRQ1 reliable?
The price and inventory of TPS61029QDRCRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61029QDRCRQ1 is usually 5 days.
3.What payment methods are accepted for TPS61029QDRCRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61029QDRCRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61029QDRCRQ1?
TPS61029QDRCRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61029QDRCRQ1 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 TPS61029QDRCRQ1?
For technical support, including TPS61029QDRCRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61029QDRCRQ1 requirements.
6.How does Aetrix verify that TPS61029QDRCRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS61029QDRCRQ1 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 TPS61029QDRCRQ1 meets industry standards.
7.What is the process for return or replacement of TPS61029QDRCRQ1?
All TPS61029QDRCRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS61029QDRCRQ1, 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 TPS61029QDRCRQ1 part is unused and in its original packaging.
Return procedure for TPS61029QDRCRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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