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Texas Instruments TPS62237DRYR
- Part No.:
- TPS62237DRYR
- Manufacturer:
- Texas Instruments
- Package:
- 6-UFDFN
- Datasheet:
-
TPS62237DRYR.pdf
- Description:
- IC REG BUCK 3.3V 500MA 6SON
- Quantity:
- Payment:
- Shipping:
Inventory:21,528
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Product details
Overview
TPS62237DRYR from Texas Instruments is a 2-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 3.3 V output, 2.05–6 V input range, and 94% peak efficiency. It serves as a high-efficiency replacement for LDOs in space-constrained portable audio and low-power wireless systems.
For engineers reviewing the TPS62237DRYR datasheet, TPS62237DRYR pinout, TPS62237DRYR application, or TPS62237DRYR equivalent, key selection criteria include its 22-μA quiescent current in power-save mode, forced PWM capability via MODE pin, 0.7-V internal reference, and support for ultra-small 12-mm² total solution size with 1-μH inductor and 4.7-μF output capacitor.
Technical Context
The TPS62237DRYR implements a hysteretic PWM controller topology enabling 2 MHz fixed-frequency operation and automatic transition between pulse-width modulation (PWM) and pulse-frequency modulation (PFM) modes. Its integrated high-side/low-side MOSFETs feature 600 mΩ and 350 mΩ typical RDS(ON), respectively, with 850 mA forward current limit on the high-side switch.
It operates across –40°C to 125°C junction temperature, includes undervoltage lockout (UVLO) with 1.9 V rising threshold, thermal shutdown at 150°C, and soft-start with ~100 μs startup time to 3.3 V. The FB pin connects directly to the output capacitor for regulation using an internal 0.7-V reference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2.5% over –40°C to 125°C; enables direct replacement of 3.3-V LDOs without external feedback resistors. |
| Input Voltage Range | 2.05 V to 6 V; supports single Li-ion, Li-primary, or two alkaline cells without brownout during discharge. |
| Switching Frequency | 2 MHz nominal; allows use of compact 1-μH inductors and reduces EMI fundamental frequency above sensitive bands. |
| Max Output Current | 500 mA continuous; limited by internal 850 mA high-side current sense threshold and thermal design margin. |
| Quiescent Current | 22 μA typical in PFM mode; extends battery life in always-on sensor or standby subsystems. |
| Efficiency | Up to 94% at medium load; achieved via synchronous rectification and low RDS(ON) MOSFETs minimizing conduction loss. |
| PSRR | Up to 90 dB at 100 kHz; suppresses input ripple and noise critical for RF and audio supply domains. |
Pinout & Package
TPS62237DRYR 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 resistance is 294.5°C/W (junction-to-ambient).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MODE | Mode control input | Pull low for automatic PFM/PWM transition; pull high for forced PWM operation-enables deterministic switching in noise-sensitive applications. |
| SW | Power switch node | Connects to external inductor; carries high di/dt switching current-requires tight layout and Kelvin connection to minimize ringing. |
| VIN | Main power input | Accepts 2.05–6 V; must be decoupled with ≥2.2 μF ceramic capacitor placed adjacent to pin to suppress high-frequency noise. |
| FB | Feedback input | Direct connection to output capacitor; senses regulated 3.3 V via internal 0.7-V reference-no external resistor divider needed. |
| EN | Enable input | Active-high logic; <1 μA shutdown current when pulled low-supports precise power sequencing in multi-rail systems. |
| GND | Power ground | Primary return path for high-current switching loop; must be connected to solid thermal pad under package for thermal and EMI performance. |
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 footprint constraints of wearables and hearing aids. |
| Optimized power-save mode | 22-μA quiescent current with low-output ripple even at light loads-eliminates audible noise and preserves regulation in battery-powered standby states. |
| Forced PWM mode | MODE pin enables fixed-frequency operation across full load range-simplifies EMI filtering and improves transient response predictability. |
| High PSRR | 90 dB at 100 kHz-maintains clean 3.3-V rail for analog/RF circuitry despite noisy shared input sources like USB or PMIC outputs. |
| 100% duty cycle capability | Supports lowest dropout operation near VIN = VOUT-extends usable battery life down to 3.3 V cutoff in Li-ion systems. |
Applications
| Portable Audio Devices | Low-Power Wireless Sensors |
|---|---|
Use Scenario: Powering DACs, headphone amplifiers, and MEMS microphones in Bluetooth earbuds. IC Role / Device Role / Timing Role: Primary 3.3-V supply rail regulator with low noise and fast transient response. Use Value: 90 dB PSRR and PFM-mode ripple optimization prevent audible artifacts and ensure SNR integrity in audio signal chain. | Use Scenario: Supplying BLE SoCs, environmental sensors, and wake-up radios in battery-operated IoT nodes. IC Role / Device Role / Timing Role: Always-on system power manager delivering regulated 3.3 V with ultra-low quiescent current. Use Value: 22-μA IQ in PFM mode extends 10-year battery life in coin-cell–powered deployments. |
| Digital Camera Modules | Low-Power DSP Core Supplies |
Use Scenario: Providing stable 3.3-V bias to image sensor interfaces and ISP power domains in compact camera modules. IC Role / Device Role / Timing Role: High-efficiency point-of-load converter supporting burst-mode imaging with rapid load transients. Use Value: 100 μs startup time and 500 mA capability enable immediate sensor activation after wake-up without voltage droop. | Use Scenario: Supplying core voltage to low-power DSPs in voice-activated edge devices. IC Role / Device Role / Timing Role: Dedicated core rail generator with tight DC regulation and low AC impedance. Use Value: 0.7-V internal reference and ±2.5% output accuracy ensure consistent DSP timing margins across temperature and load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYR | Fixed 1.8 V output; identical package, pinout, and functional behavior except output voltage. | Targets 1.8-V digital I/O or core rails instead of 3.3-V analog/peripheral supplies. | Select when system requires 1.8 V with same board layout and control interface. |
| TPS62238DRYR | Fixed 2.25 V output; shares all electrical specs, thermal characteristics, and package dimensions with TPS62237DRYR. | Suitable for 2.25-V FPGA I/O banks or specific sensor biasing requirements. | Choose for 2.25-V rail where 3.3-V is incompatible with downstream logic thresholds. |
Compared with TPS62231DRYR and TPS62238DRYR, the TPS62237DRYR provides the only 3.3-V fixed-output option in the TPS6223x family with 2-MHz switching-making it uniquely suited for legacy 3.3-V peripheral interfaces without redesigning feedback networks or adjusting sequencing timing.
Availability
TPS62237DRYR is available at Aetrix Electronics and suitable for portable audio, low-power wireless sensors, and digital camera modules requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62237DRYR 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 over 50 years of innovation in energy-efficient IC design.
The TPS6223x product line was engineered for ultra-compact, high-efficiency DC-DC conversion in battery-powered portable electronics-prioritizing minimal solution size, low IQ, and robust performance across wide temperature and load ranges.
FAQ
What is the output voltage of the TPS62237DRYR?
The TPS62237DRYR provides a fixed 3.3 V output voltage with ±2.5% accuracy over the full operating temperature range of –40°C to 125°C. This eliminates the need for external feedback resistors and simplifies design for standard 3.3-V rail applications such as USB peripherals, SD card interfaces, and analog front-ends. The internal 0.7-V reference ensures stable regulation independent of external component tolerances.
Does the TPS62237DRYR support forced PWM mode?
Yes, the TPS62237DRYR supports forced PWM mode via the MODE pin: pulling MODE high disables automatic PFM/PWM transition and locks the device into quasi-fixed-frequency 2-MHz operation across all load conditions. This is essential for EMI-sensitive designs where predictable switching frequency simplifies filter design and avoids sub-audible beat frequencies in audio systems.
What is the minimum input voltage required for the TPS62237DRYR to operate?
The TPS62237DRYR requires a minimum input voltage of 2.05 V to initiate and sustain regulation. This enables reliable operation from partially discharged Li-ion batteries (down to ~2.1 V), Li-primary cells, or two alkaline cells in series. The undervoltage lockout (UVLO) has a rising threshold of 1.9 V, ensuring clean startup once input rises above this level.
Can the TPS62237DRYR be used with a pre-biased output capacitor?
Yes, the TPS62237DRYR supports start-up into a pre-biased output capacitor. Its internal soft-start circuitry ramps the output from the existing bias voltage to the target 3.3 V without causing reverse current or output overshoot-critical for hot-swap or multi-rail sequencing scenarios where downstream circuitry remains powered during converter enable.
What package type and dimensions does the TPS62237DRYR use?
The TPS62237DRYR uses a 6-pin USON (DRY) package measuring 1.0 mm × 1.5 mm × 0.6 mm with wettable flanks. This ultra-compact footprint enables high-density layouts in space-constrained applications like hearables and medical patches. The exposed thermal pad underneath improves heat dissipation and solder joint reliability during reflow.
TPS62237DRYR 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):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 500mA
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-SON (1.45x1)
TPS62237DRYR FAQ
1.How can I place an order for TPS62237DRYR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62237DRYR 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 TPS62237DRYR reliable?
The price and inventory of TPS62237DRYR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62237DRYR is usually 5 days.
3.What payment methods are accepted for TPS62237DRYR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62237DRYR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62237DRYR?
TPS62237DRYR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62237DRYR 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 TPS62237DRYR?
For technical support, including TPS62237DRYR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62237DRYR requirements.
6.How does Aetrix verify that TPS62237DRYR is sourced from the original manufacturer or authorized distributors?
All TPS62237DRYR 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 TPS62237DRYR meets industry standards.
7.What is the process for return or replacement of TPS62237DRYR?
All TPS62237DRYR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62237DRYR, 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 TPS62237DRYR part is unused and in its original packaging.
Return procedure for TPS62237DRYR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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