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Texas Instruments TPS622312DRYT
- Part No.:
- TPS622312DRYT
- Manufacturer:
- Texas Instruments
- Package:
- 6-UFDFN
- Datasheet:
-
TPS622312DRYT.pdf
- Description:
- IC REG BUCK 2V 500MA 6SON
- Quantity:
- Payment:
- Shipping:
Inventory:935
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Product details
Overview
TPS622312DRYT from Texas Instruments is a 2-MHz/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 fixed 2.0 V output voltage, 2.05 V to 6 V input range, and 22 μA quiescent current in power-save mode - optimized for Li-ion, dual-alkaline, or single-Li-primary powered portable audio and low-power wireless systems.
For engineers reviewing the TPS622312DRYT datasheet, TPS622312DRYT pinout, TPS622312DRYT application, or TPS622312DRYT equivalent, key selection criteria include its ultra-small 12 mm² solution size, forced-PWM capability via MODE pin, 94% peak efficiency, 0.7 V internal reference, and thermal shutdown at 150°C - all critical for space-constrained battery-powered designs requiring low-noise regulation.
Technical Context
The TPS622312DRYT implements a hysteretic PWM controller topology enabling >3 MHz switching while maintaining excellent AC load regulation and low output ripple across 0–500 mA loads. Its dual-mode operation - automatic PFM/PWM transition at light-to-medium loads and user-selectable forced-PWM via MODE pin - ensures high efficiency and predictable noise spectrum.
Internally, it integrates PMOS/NMOS synchronous switches with typical RDS(ON) of 600 mΩ (high-side) and 350 mΩ (low-side), a 0.7 V precision bandgap reference, undervoltage lockout (UVLO) with 1.9 V rising threshold, and soft-start with ~100 μs startup time to 2.0 V output. Thermal shutdown activates at 150°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.0 V ±2.5% over –40°C to 125°C junction temperature - enables direct replacement of LDOs without external feedback resistors. |
| Input Voltage Range | 2.05 V to 6 V - supports single Li-primary, dual-alkaline, or Li-ion batteries across full discharge curve. |
| Max Output Current | 500 mA continuous - determined by internal 850 mA switch current limit and thermal design with RθJA = 294.5°C/W. |
| Quiescent Current | 22 μA in PFM mode - extends battery life in always-on sensor or standby subsystems. |
| Switching Frequency | 3 MHz nominal (configurable via MODE pin) - allows use of 1 μH inductors and 4.7 μF ceramic capacitors for minimal PCB area. |
| Efficiency | Up to 94% at medium loads - reduces thermal stress and improves power density vs. linear regulators. |
| PSRR | Up to 90 dB - suppresses input supply noise critical for RF and audio signal chains. |
Pinout & Package
TPS622312DRYT uses a 6-pin 1.0 mm × 1.5 mm × 0.6 mm USON (DRY) package with wettable flanks, optimized for automated optical inspection and high-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 2.05–6 V supply; connects to input capacitor (2.2 μF min) and feeds internal PMOS/NMOS switches. |
| GND | Power ground | Common return path for VIN, SW, FB, EN, and MODE; requires low-impedance PCB plane for EMI control. |
| EN | Enable control | Active-high logic input; pulling low disables converter and reduces current to <1 μA - used for 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 | Drives external inductor (2.2 μH); carries high di/dt; must be routed short and away from sensitive analog traces. |
| FB | Feedback input | Connects directly to output capacitor; internal 0.7 V reference sets 2.0 V output via fixed resistor divider - no external resistors needed. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small solution size | 12 mm² total PCB area with 1 μH inductor and 4.7 μF output capacitor - fits within tight spaces like earbud PCBs or wearables. |
| Forced PWM mode | Eliminates pulse-skipping noise by holding fixed frequency across entire load range - essential for RF coexistence and audio SNR. |
| High PSRR (90 dB) | Rejects ripple from noisy upstream supplies (e.g., buck-boost chargers), preserving clean 2.0 V rail for ADCs or PLLs. |
| 100% duty cycle capability | Enables lowest dropout operation - maintains regulation even when VIN drops to 2.05 V, extending battery runtime. |
| Thermal shutdown with hysteresis | Shuts down at 150°C junction temperature and resumes only after cooling to 130°C - prevents thermal runaway in sealed enclosures. |
Applications
| Portable Audio Systems | Low-Power Wireless Sensors |
|---|---|
|
Use Scenario: Powering DACs, headphone amplifiers, and MEMS microphones in Bluetooth earbuds with Li-ion battery input. IC Role / Device Role / Timing Role: Primary 2.0 V supply regulator replacing inefficient LDOs to minimize heat and extend playback time. Use Value: 94% efficiency and 22 μA quiescent current directly increase battery life by >30% versus linear regulation at 100 mA load. |
Use Scenario: Supplying sub-GHz transceivers (e.g., CC1310) and ultra-low-power MCUs (e.g., MSP430FR) in battery-operated IoT nodes. IC Role / Device Role / Timing Role: Main system rail generator with fast transient response to handle burst TX/RX current spikes up to 500 mA. Use Value: 3 MHz switching and 100 μs startup enable rapid wake-from-sleep operation without brownout during RF transmission. |
| Digital Camera Image Sensors | Wearable Health Monitors |
|
Use Scenario: Providing stable 2.0 V bias to CMOS image sensors and ISP processors in compact action cameras. IC Role / Device Role / Timing Role: Low-noise power source with high PSRR to prevent supply-induced fixed-pattern noise in captured images. Use Value: 90 dB PSRR and <10 mVPP output ripple ensure clean sensor analog front-end performance under dynamic lighting conditions. |
Use Scenario: Regulating power for optical heart-rate sensors (PPG), accelerometers, and BLE SoCs in wrist-worn fitness trackers. IC Role / Device Role / Timing Role: Compact, thermally robust DC-DC converter supporting 24/7 operation in constrained thermal envelopes. Use Value: 12 mm² solution size and 0.6 mm max height meet strict mechanical stack-up requirements while sustaining 125°C junction rating. |
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. | Suitable where 1.8 V logic rails are required instead of 2.0 V - no layout change needed. | Select TPS62231DRYT only if system-level voltage margin permits 1.8 V instead of 2.0 V for core logic. |
| TPS622311DRYT | Fixed 1.1 V output; 2 MHz (not 3 MHz) switching frequency; same USON-6 package and pin compatibility. | Better suited for ultra-low-voltage MCU cores (e.g., ARM Cortex-M0+) but requires re-optimization of LC filter for lower fSW. | Choose TPS622311DRYT when targeting 1.1 V domains with relaxed EMI constraints and larger inductor tolerance. |
Compared with TPS622312DRYT, TPS62231DRYT offers identical form-factor and efficiency but targets 1.8 V logic, while TPS622311DRYT shifts to 1.1 V and 2 MHz - both require voltage-specific validation but share footprint, thermal profile, and control interface.
Availability
TPS622312DRYT is available at Aetrix Electronics and suitable for portable audio, low-power wireless sensors, and wearable health monitors requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS622312DRYT 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 headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management ICs for industrial, automotive, and consumer markets.
The TPS6223x product line was designed specifically for ultra-compact, high-efficiency battery-powered portable electronics - emphasizing minimal solution size, low quiescent current, and seamless LDO replacement capability in space- and power-constrained applications.
FAQ
What is the fixed output voltage of the TPS622312DRYT?
The TPS622312DRYT delivers a factory-trimmed fixed output voltage of 2.0 V with ±2.5% accuracy over –40°C to 125°C junction temperature. This value is set by an internal resistor divider referenced to a 0.7 V bandgap, eliminating the need for external feedback components and ensuring consistent regulation across production units.
Can the TPS622312DRYT operate from a single alkaline cell?
Yes, the TPS622312DRYT supports input voltages as low as 2.05 V, enabling reliable operation from two fresh alkaline cells (starting at ~3.0 V) down to near end-of-life (~2.1 V). Its 100% duty cycle capability maintains regulation even when VIN approaches VOUT, extending usable battery capacity beyond what standard buck converters allow.
How does the MODE pin affect TPS622312DRYT operation?
When the MODE pin is pulled low (GND), the TPS622312DRYT automatically transitions between PWM and power-save (PFM) modes based on load - optimizing efficiency at light loads. When pulled high (VIN), it forces continuous PWM mode, eliminating variable-frequency noise and enabling predictable EMI filtering - critical for RF-sensitive applications.
What is the maximum recommended output current for TPS622312DRYT?
The TPS622312DRYT supports up to 500 mA continuous output current under typical PCB thermal conditions (2-layer board, 2 oz copper). This limit arises from its internal 850 mA MOSFET current limit and thermal resistance (RθJA = 294.5°C/W); sustained 500 mA operation requires adequate copper pour and airflow to maintain TJ ≤125°C.
Does the TPS622312DRYT require external compensation components?
No, the TPS622312DRYT uses an internally compensated hysteretic PWM control architecture - no external compensation network is needed. Its stability is guaranteed with standard 2.2 μH inductors and 4.7 μF ceramic output capacitors, simplifying design and reducing BOM count compared to voltage-mode controllers.
TPS622312DRYT 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):
- 2V
- 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)
TPS622312DRYT FAQ
1.How can I place an order for TPS622312DRYT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS622312DRYT 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 TPS622312DRYT reliable?
The price and inventory of TPS622312DRYT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS622312DRYT is usually 5 days.
3.What payment methods are accepted for TPS622312DRYT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS622312DRYT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS622312DRYT?
TPS622312DRYT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS622312DRYT 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 TPS622312DRYT?
For technical support, including TPS622312DRYT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS622312DRYT requirements.
6.How does Aetrix verify that TPS622312DRYT is sourced from the original manufacturer or authorized distributors?
All TPS622312DRYT 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 TPS622312DRYT meets industry standards.
7.What is the process for return or replacement of TPS622312DRYT?
All TPS622312DRYT units undergo pre-shipment inspection (PSI). If there is an issue with TPS622312DRYT, 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 TPS622312DRYT part is unused and in its original packaging.
Return procedure for TPS622312DRYT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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