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Texas Instruments TPS622317DRYT
- Part No.:
- TPS622317DRYT
- Manufacturer:
- Texas Instruments
- Package:
- 6-UFDFN
- Datasheet:
-
TPS622317DRYT.pdf
- Description:
- IC REG BUCK 2.9V 500MA 6SON
- Quantity:
- Payment:
- Shipping:
Inventory:1,082
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Product details
Overview
TPS622317DRYT from Texas Instruments is a 2.9-V fixed-output, 3-MHz synchronous step-down DC-DC converter in a 1-mm × 1.5-mm USON-6 package, delivering up to 500 mA output current with 94% peak efficiency, 22-μA quiescent current in power-save mode, and operation from 2.05 V to 6 V input - optimized for Li-ion, dual-alkaline, or Li-primary battery-powered portable audio and low-power wireless systems.
For engineers reviewing the TPS622317DRYT datasheet, TPS622317DRYT pinout, TPS622317DRYT application, or TPS622317DRYT equivalent, key selection criteria include its 2.9-V fixed output, 3-MHz switching frequency, ultra-small 12-mm² solution size, forced-PWM capability via MODE pin, and thermal shutdown at 150°C - all critical for space-constrained, noise-sensitive, and battery-life-optimized designs.
Technical Context
The TPS622317DRYT implements a hysteretic PWM controller topology enabling stable 3-MHz operation with excellent AC load regulation and low output ripple across 0–500 mA loads. It supports automatic transition between pulse-frequency modulation (PFM) at light loads and quasi-fixed-frequency PWM at medium/heavy loads, with internal 0.7-V reference and feedback loop referenced to FB pin.
Its integrated high-side/low-side MOSFETs feature typical RDS(ON) of 600 mΩ (PMOS) and 350 mΩ (NMOS), enabling efficient conversion down to 2.05-V input while maintaining 100% duty cycle capability for lowest dropout. Thermal shutdown activates at 150°C with 20°C hysteresis, and undervoltage lockout triggers at 1.8 V (falling) / 1.9 V (rising).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.9 V ±2.5% over –40°C to 125°C junction temperature - ensures stable core supply for DSPs or RF ICs without external resistor divider. |
| Switching Frequency | 3 MHz - enables use of tiny 2.2-μH inductors and 4.7-μF output capacitors, minimizing PCB area to <12 mm². |
| Max Output Current | 500 mA - supported by internal 850-mA high-side current limit and thermal design with RθJA = 294.5°C/W in DRY package. |
| Quiescent Current | 22 μA in PFM mode - extends battery runtime in always-on sensor or standby audio subsystems. |
| Input Voltage Range | 2.05 V to 6 V - compatible with single Li-ion (2.7–4.2 V), two alkaline (2.0–3.2 V), or Li-primary cells without external LDO pre-regulation. |
| Efficiency | Up to 94% - reduces thermal load in sealed enclosures and improves energy utilization in portable media players. |
| Shutdown Current | <1 μA - enables deep-sleep modes in IoT endpoints with minimal leakage during system suspend. |
Pinout & Package
TPS622317DRYT is housed in a 1-mm × 1.5-mm × 0.6-mm, 6-pin USON (DRY) package with wettable flanks, optimized for automated optical inspection and high-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MODE | Mode control input | Pull low for auto PFM/PWM transition; pull high for forced PWM - eliminates audible noise in audio codecs and improves EMI filtering predictability. |
| SW | Power switch node | Connects to external 2.2-μH inductor - carries high di/dt switching current; requires tight layout to minimize parasitic inductance and EMI. |
| VIN | Main power input | Accepts 2.05–6 V; requires local 2.2-μF ceramic capacitor placed adjacent to pin to suppress high-frequency input ripple. |
| FB | Feedback input | Direct connection to output capacitor - sets regulation point via internal 0.7-V reference; no external resistors needed for fixed 2.9-V output. |
| EN | Enable input | Active-high logic; must be terminated - enables precise power sequencing with other rails or microcontroller GPIO control. |
| GND | Power ground | Common return for VIN, SW, EN, MODE, FB - requires solid thermal pad connection to PCB ground plane for thermal performance and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small solution size | 12 mm² total PCB area - achieved with only three external components (inductor + two capacitors), ideal for hearing aids and wearables. |
| High PSRR (up to 90 dB) | Rejects input ripple and noise from noisy battery or shared power rails - critical for analog audio paths and RF front-end stability. |
| Optimized power-save mode | Maintains low output voltage ripple even at 10–100 μA loads using small 4.7-μF output capacitor - avoids audible coil whine in portable speakers. |
| 100% duty cycle operation | Supports dropout as low as VOUT − VIN ≈ 0 V - enables direct regulation from partially discharged Li-ion cells (e.g., 3.0 V → 2.9 V). |
| Thermal shutdown with hysteresis | Shuts down at 150°C and resumes at 130°C - prevents thermal runaway during sustained 500-mA loads in compact enclosures. |
Applications
| Portable Audio Playback | Low-Power Wireless Sensor Node |
|---|---|
Use Scenario: Powering DAC, headphone amplifier, and codec in Bluetooth earbuds with 3.7-V Li-ion battery. IC Role / Device Role: Primary 2.9-V rail generator replacing inefficient LDO to extend playback time. Use Value: 94% efficiency and 22-μA quiescent current directly increase battery life by >30% versus linear regulation at 100-mA average load. | Use Scenario: Supplying 2.9-V bias to sub-GHz RF transceiver and ultra-low-power MCU in industrial temperature sensor. IC Role / Device Role: Main system regulator operating from two AA alkaline cells (2.0–3.2 V range). Use Value: 2.05-V minimum input enables full battery utilization down to 2.1 V, adding ~15% operational runtime before replacement. |
| Digital Camera Image Sensor Bias | Wearable Health Monitor Core Supply |
Use Scenario: Providing clean 2.9-V supply to CMOS image sensor and ISP in compact action camera. IC Role / Device Role: Low-noise, high-PSRR DC-DC converter feeding analog sensor front-end. Use Value: 90-dB PSRR suppresses switching noise coupling into analog pixel data, reducing fixed-pattern noise in captured images. | Use Scenario: Regulating 2.9-V core voltage for ARM Cortex-M0+ MCU and optical heart-rate sensor in fitness band. IC Role / Device Role: Space-optimized power stage in 12-mm² total board area constraint. Use Value: 1-mm × 1.5-mm USON package and 12-mm² solution size meet strict mechanical envelope requirements without sacrificing efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYT | Fixed 1.8-V output; identical package, pinout, and electrical specs except VOUT. | Used where lower core voltage required (e.g., 1.8-V I/O domains); not interchangeable without schematic change. | Select TPS62231DRYT only when 1.8-V output is explicitly required - same layout but different feedback network (internal). |
| TPS62232DRYT | Fixed 1.2-V output; otherwise matches TPS622317DRYT in frequency, package, and efficiency profile. | Targeted at ultra-low-voltage digital cores (e.g., 1.2-V FPGA logic); incompatible for 2.9-V rail needs. | Choose TPS62232DRYT for 1.2-V applications - pin-compatible but electrically distinct output; verify load transient response matches system requirements. |
Compared with TPS62231DRYT (1.8 V) and TPS62232DRYT (1.2 V), the TPS622317DRYT provides the only 2.9-V fixed option in the family - making it uniquely suitable for analog audio stages, RF biasing, and legacy 3.0-V peripherals where higher output voltage is mandatory for signal headroom or interface compatibility.
Availability
TPS622317DRYT is available at Aetrix Electronics and suitable for portable audio, low-power wireless sensor nodes, and wearable health monitors requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.
Supply support for TPS622317DRYT 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 leadership in high-efficiency DC-DC conversion and battery-powered system solutions.
The TPS6223x product line was designed specifically for ultra-compact, high-frequency step-down regulation in portable electronics - prioritizing minimal solution size, low quiescent current, and robust performance across wide input voltage and temperature ranges.
FAQ
What is the fixed output voltage of the TPS622317DRYT?
The TPS622317DRYT delivers a factory-trimmed fixed output voltage of 2.9 V with ±2.5% accuracy over –40°C to 125°C junction temperature. This value is set internally and requires no external feedback resistors, simplifying design and reducing BOM count. The 2.9-V output is specifically selected to support analog audio circuitry, RF bias rails, and legacy 3.0-V interfaces while maintaining margin below typical Li-ion maximum voltage.
Does the TPS622317DRYT support forced PWM mode, and how is it enabled?
Yes, the TPS622317DRYT supports forced PWM mode to eliminate pulse-skipping noise. It is enabled by pulling the MODE pin high (≥0.8 V) - typically to VIN. In this mode, the device operates at quasi-fixed 3-MHz frequency across all load conditions, improving EMI filter predictability and eliminating audible artifacts in sensitive audio applications. The TPS622317DRYT does not integrate a pull-down resistor on MODE, so external termination is required.
What is the minimum input voltage required for the TPS622317DRYT to start up and regulate?
TPS622317DRYT requires a minimum input voltage of 2.05 V to initiate startup and maintain regulation. This allows operation from two alkaline cells (down to ~2.1 V) or deeply discharged Li-primary batteries. The undervoltage lockout (UVLO) rising threshold is 1.9 V, ensuring reliable turn-on once input recovers above that level. Below 2.05 V, the device ceases switching and enters UVLO disable state.
Can the TPS622317DRYT be used to replace an LDO in a battery-powered design?
Yes, the TPS622317DRYT is explicitly positioned as an LDO replacement in portable systems. With 94% peak efficiency and 22-μA quiescent current, it significantly outperforms typical LDOs (often <50% efficient at 3.7 V → 2.9 V), extending battery life. Its 100% duty cycle capability and low dropout behavior mimic LDO usability, while its high PSRR (up to 90 dB) ensures noise performance meets or exceeds linear regulators in RF and audio signal chains.
What package type and dimensions does the TPS622317DRYT use?
The TPS622317DRYT uses the DRY package: a 6-pin, 1.0-mm × 1.5-mm × 0.6-mm USON (Ultra-Small Outline No-lead) with wettable flanks. This package enables automated optical inspection and supports ultra-dense PCB layouts. Its thermal resistance is RθJA = 294.5°C/W, and it requires solder paste stencil design per TI's SNOA847 application note for reliable reflow yield.
TPS622317DRYT 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):
- 2.9V
- 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)
TPS622317DRYT FAQ
1.How can I place an order for TPS622317DRYT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS622317DRYT 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 TPS622317DRYT reliable?
The price and inventory of TPS622317DRYT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS622317DRYT is usually 5 days.
3.What payment methods are accepted for TPS622317DRYT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS622317DRYT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS622317DRYT?
TPS622317DRYT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS622317DRYT 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 TPS622317DRYT?
For technical support, including TPS622317DRYT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS622317DRYT requirements.
6.How does Aetrix verify that TPS622317DRYT is sourced from the original manufacturer or authorized distributors?
All TPS622317DRYT 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 TPS622317DRYT meets industry standards.
7.What is the process for return or replacement of TPS622317DRYT?
All TPS622317DRYT units undergo pre-shipment inspection (PSI). If there is an issue with TPS622317DRYT, 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 TPS622317DRYT part is unused and in its original packaging.
Return procedure for TPS622317DRYT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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