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Texas Instruments TPS62231DRYR
- Part No.:
- TPS62231DRYR
- Manufacturer:
- Texas Instruments
- Package:
- 6-UFDFN
- Datasheet:
-
TPS62231DRYR.pdf
- Description:
- IC REG BUCK 1.8V 500MA 6SON
- Quantity:
- Payment:
- Shipping:
Inventory:17,102
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Product details
Overview
TPS62231DRYR from Texas Instruments is a 3-MHz synchronous step-down DC-DC converter optimized for battery-powered portable applications, delivering up to 500 mA output current with fixed 1.8 V output, 2.05 V to 6 V input range, and 94% peak efficiency - used in low-power DSP core supplies and digital camera power rails.
For engineers reviewing the TPS62231DRYR datasheet, TPS62231DRYR pinout, TPS62231DRYR application, or TPS62231DRYR equivalent, key selection criteria include its 1-mm × 1.5-mm USON-6 package, 22-μA quiescent current in power-save mode, forced PWM capability via MODE pin, 0.7-V internal reference, and support for 2.2-μH inductor / 4.7-μF capacitor minimum solution size under 12 mm².
Technical Context
The TPS62231DRYR implements a hysteretic PWM controller topology enabling 3-MHz switching with excellent AC load regulation and low output ripple across full load range. Its dual-mode operation - automatic PFM/PWM transition at light-to-medium loads and forced PWM via MODE pin - ensures high efficiency and noise control without external compensation.
Internally, it integrates high-side (600–850 mΩ) and low-side (350–480 mΩ) MOSFETs, 0.7-V reference, undervoltage lockout (1.8 V typical), thermal shutdown (150°C), and soft-start (100 μs typical). The FB pin connects directly to output capacitor for stable regulation without external resistor divider.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2.5% over –40°C to 125°C junction temperature - enables direct replacement of LDOs in DSP core rails without feedback resistor network. |
| Input Voltage Range | 2.05 V to 6 V - supports single Li-ion (2.7–4.2 V), Li-primary, or two alkaline cells without dropout concerns. |
| Switching Frequency | 3 MHz nominal - allows use of tiny 2.2-μH inductors and reduces EMI filtering burden in space-constrained audio/RF designs. |
| Max Output Current | 500 mA continuous - sustained with proper PCB thermal layout; limited by internal 850-mA high-side switch current threshold. |
| Quiescent Current | 22 μA typical in power-save mode - extends battery life in always-on sensor nodes and standby audio subsystems. |
| Efficiency | Up to 94% at medium loads - exceeds linear regulator efficiency while maintaining low output ripple (<10 mVPP typical). |
| PSRR | Up to 90 dB - suppresses input supply noise critical for analog audio paths and RF front-end biasing. |
Pinout & Package
TPS62231DRYR is housed in a 1.0 mm × 1.5 mm × 0.6 mm, 6-pin USON (DRY) package with wettable flank terminals for automated optical inspection. Thermal performance is characterized by RθJA = 294.5°C/W on standard JEDEC 2-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 2.05–6 V; must be decoupled with ≥2.2-μF ceramic capacitor close to pin for stability and transient response. |
| GND | Power ground | Primary return path for high-frequency switch current; requires low-inductance connection to power plane. |
| EN | Enable control | Active-high logic input; pulling low disables converter and reduces current to <1 μA - used for system-level power sequencing. |
| MODE | Operating mode select | Low = auto PFM/PWM transition; high = forced PWM - eliminates audible noise and enables predictable EMI filtering. |
| SW | Switch node | Connects to inductor; carries high di/dt switching current - requires short, wide trace and minimized loop area to reduce EMI. |
| FB | Feedback input | Direct connection to output capacitor; no external resistors needed - simplifies layout and improves regulation accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small solution size | 12 mm² total PCB area with 2.2-μH inductor and 4.7-μF output capacitor - fits within tight spaces in wearable and portable media devices. |
| Optimized power-save mode | 22-μA quiescent current with low-output ripple even at light loads - eliminates need for external LDO post-regulation in battery-sensitive systems. |
| Forced PWM operation | MODE pin enables fixed-frequency switching across entire load range - essential for noise-critical RF and audio signal chains. |
| High PSRR (90 dB) | Maintains clean output under noisy input conditions - replaces linear regulators in mixed-signal SoC core supplies without efficiency penalty. |
| 100% duty cycle capability | Supports lowest possible dropout - sustains 1.8-V output down to ~1.9-V input, extending usable battery voltage range. |
Applications
| Portable Audio Systems | Digital Camera Modules |
|---|---|
|
Use Scenario: Powering stereo codec, MEMS microphone bias, and headphone amplifier in Bluetooth earbuds. IC Role / Device Role / Timing Role: Primary 1.8-V rail generator replacing inefficient LDOs to extend playback time. Use Value: 94% efficiency and 90-dB PSRR minimize battery drain and prevent switching noise from coupling into analog audio paths. |
Use Scenario: Supplying image sensor core and ISP logic in compact action cameras. IC Role / Device Role / Timing Role: High-efficiency, low-noise DC-DC converter for noise-sensitive pixel readout circuitry. Use Value: 3-MHz switching avoids interference with sensor clock domains; 22-μA quiescent current preserves standby battery life. |
| Low-Power Wireless Sensors | Portable Media Players |
|
Use Scenario: Providing regulated 1.8-V supply to BLE SoC and environmental sensors in coin-cell–powered IoT nodes. IC Role / Device Role / Timing Role: Ultra-low-IQ buck converter enabling multi-year battery life in intermittent transmit/receive cycles. Use Value: 22-μA quiescent current in PFM mode and 1-μA shutdown current maximize energy per battery charge cycle. |
Use Scenario: Powering NAND flash controller and display interface logic in handheld music/video players. IC Role / Device Role / Timing Role: Compact, high-efficiency step-down regulator supporting dynamic voltage scaling during playback. Use Value: 12-mm² solution size frees PCB area for larger batteries; forced PWM mode ensures consistent timing for burst data transfers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62232DRYR | Fixed 1.2 V output; identical 3-MHz frequency, package, and feature set. | Targets lower-voltage DSP cores or FPGA I/O banks requiring 1.2 V instead of 1.8 V. | Select when system architecture mandates 1.2 V rail with same size, efficiency, and noise profile. |
| TPS622311DRYR | 2-MHz switching frequency; same 1.8 V output, USON-6 package, and 500-mA rating. | Better EMI filterability due to lower fundamental frequency; slightly larger inductor required (≥3.3 μH). | Choose for designs prioritizing EMI compliance over minimal solution size or highest efficiency at light loads. |
Compared with TPS62231DRYR, TPS62232DRYR delivers lower output voltage for newer low-power cores, while TPS622311DRYR trades switching frequency for improved EMI suppression - both retain identical pinout, thermal behavior, and control interface, enabling layout reuse where voltage or noise requirements differ.
Availability
TPS62231DRYR is available at Aetrix Electronics and suitable for portable audio systems, digital camera modules, and low-power wireless sensors requiring stable component supply with guaranteed long-term manufacturability and consistent electrical performance.
Supply support for TPS62231DRYR 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, embedded processing, and power management technologies, with decades of leadership in high-efficiency DC-DC conversion.
The TPS6223x product line was designed specifically for ultra-compact, battery-powered portable electronics - emphasizing minimal solution size, low quiescent current, and high PSRR to replace linear regulators without sacrificing noise performance.
FAQ
What is the fixed output voltage of the TPS62231DRYR?
The TPS62231DRYR provides a factory-trimmed fixed output voltage of 1.8 V with ±2.5% accuracy over –40°C to 125°C junction temperature. This eliminates the need for external feedback resistors and simplifies design for applications like DSP core supplies where precise 1.8-V regulation is required. The TPS62231DRYR achieves this using an internal 0.7-V reference and precision resistor network.
Does the TPS62231DRYR support forced PWM mode, and how is it enabled?
Yes, the TPS62231DRYR supports forced PWM mode across the full load range. It is enabled by driving the MODE pin high (≥0.8 V), which disables automatic PFM/PWM transition and maintains quasi-fixed 3-MHz switching. This is critical for noise-sensitive applications such as RF transceivers or high-fidelity audio circuits where pulse skipping must be avoided. The TPS62231DRYR retains full regulation accuracy and thermal protection in this mode.
What is the minimum input voltage required for the TPS62231DRYR to start up and operate?
The TPS62231DRYR requires a minimum input voltage of 2.05 V to start up and sustain operation, as defined by its undervoltage lockout (UVLO) rising threshold. It remains functional down to the falling UVLO threshold of 1.8 V, allowing extended runtime from aging Li-ion or dual-alkaline batteries. Below 2.05 V, the device will not initiate soft-start; once enabled, it continues regulating until VIN drops below 1.8 V.
Can the TPS62231DRYR be used to replace an LDO in a low-noise application?
Yes, the TPS62231DRYR is explicitly designed as an LDO replacement in low-noise applications. With up to 90-dB PSRR and optimized power-save mode delivering low output ripple (<10 mVPP) even with small 4.7-μF output capacitors, it matches or exceeds LDO noise performance while achieving 94% efficiency. Its 22-μA quiescent current further supports battery longevity - making the TPS62231DRYR ideal for portable audio and RF bias rails.
What package type and dimensions does the TPS62231DRYR use?
The TPS62231DRYR uses a 6-pin USON (Ultra-Small Outline No-lead) package designated DRY, measuring 1.0 mm × 1.5 mm × 0.6 mm with wettable flanks. This package enables automated optical inspection and supports ultra-dense PCB layouts. Its thermal resistance is characterized at RθJA = 294.5°C/W on a standard 2-layer JEDEC board, and it requires no heatsink for typical 500-mA operation with adequate copper pour.
TPS62231DRYR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-UFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.05V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 500mA
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-SON (1.45x1)
TPS62231DRYR FAQ
1.How can I place an order for TPS62231DRYR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62231DRYR 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 TPS62231DRYR reliable?
The price and inventory of TPS62231DRYR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62231DRYR is usually 5 days.
3.What payment methods are accepted for TPS62231DRYR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62231DRYR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62231DRYR?
TPS62231DRYR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62231DRYR 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 TPS62231DRYR?
For technical support, including TPS62231DRYR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62231DRYR requirements.
6.How does Aetrix verify that TPS62231DRYR is sourced from the original manufacturer or authorized distributors?
All TPS62231DRYR 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 TPS62231DRYR meets industry standards.
7.What is the process for return or replacement of TPS62231DRYR?
All TPS62231DRYR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62231DRYR, 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 TPS62231DRYR part is unused and in its original packaging.
Return procedure for TPS62231DRYR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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