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Texas Instruments TPS62235DRYR
- Part No.:
- TPS62235DRYR
- Manufacturer:
- Texas Instruments
- Package:
- 6-UFDFN
- Datasheet:
-
TPS62235DRYR.pdf
- Description:
- IC REG BUCK 1.2V 500MA 6SON
- Quantity:
- Payment:
- Shipping:
Inventory:302
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Product details
Overview
TPS62235DRYR 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 1.2 V output voltage, 2.05 V to 6 V input range, and 22 μA quiescent current in power-save mode - used for low-power DSP core supply and portable media devices.
For engineers reviewing the TPS62235DRYR datasheet, TPS62235DRYR pinout, TPS62235DRYR application, or TPS62235DRYR equivalent, key selection criteria include its 1.2 V fixed output, 2 MHz switching frequency, forced-PWM capability via MODE pin, ultra-small 12 mm² solution size, and operation down to –40°C junction temperature.
Technical Context
The TPS62235DRYR implements a hysteretic PWM controller topology enabling stable 2 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.
Its internal 0.7 V reference feeds a precision feedback loop; the FB pin connects directly to the output capacitor for regulation. The device integrates high-side (600–850 mΩ) and low-side (350–480 mΩ) MOSFETs, with thermal shutdown at 150°C and undervoltage lockout (UVLO) active below 1.8 V (falling threshold).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±2.5% over –40°C to 125°C - ensures stable core supply for low-voltage DSPs and microcontrollers. |
| Switching Frequency | 2 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 - sufficient for powering single-core processors, audio codecs, or RF transceivers in portable systems. |
| Quiescent Current | 22 μA in PFM mode - extends battery life in always-on sensor nodes or standby subsystems. |
| 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 external regulators. |
| Efficiency | Up to 94% - reduces thermal load and improves power density versus LDO alternatives in battery-powered designs. |
| Package | USON-6 (1 mm × 1.5 mm × 0.6 mm) - ultra-compact footprint compatible with space-constrained wearables and hearing aids. |
Pinout & Package
TPS62235DRYR is housed in a 6-pin USON (DRY) package measuring 1.0 mm × 1.5 mm × 0.6 mm, with wettable flanks for automated optical inspection. Thermal resistance RθJA is 294.5°C/W on standard 2-layer PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MODE | Mode control input | Pull low for automatic PFM/PWM transition; pull high for forced PWM mode - eliminates audible noise and enables predictable EMI filtering. |
| SW | Switch node | Connects to inductor - carries high di/dt switching current; requires tight layout to minimize EMI and voltage spikes. |
| VIN | Input power supply | Accepts 2.05–6 V; must be decoupled with ≥2.2 μF ceramic capacitor close to pin to suppress input ripple and UVLO false triggers. |
| FB | Feedback input | Direct connection to output capacitor - sets regulation point via internal 0.7 V reference; no external resistor divider needed. |
| EN | Enable input | Active-high logic; must be terminated (no internal pull-up/down) - enables precise power sequencing with other rails. |
| GND | Power ground | Common return for VIN, SW, EN, MODE, FB - requires low-impedance thermal pad connection to PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Forced PWM mode | Eliminates pulse skipping noise by holding constant 2 MHz switching - critical for RF-sensitive receivers and audio DACs. |
| 100% duty cycle capability | Supports dropout as low as VOUT − VIN ≈ 0 V - maintains regulation during brownout conditions common in battery discharge profiles. |
| High PSRR (up to 90 dB) | Rejects input ripple and noise above 10 kHz - allows direct connection to noisy shared battery rails without additional LDO stage. |
| Thermal shutdown with hysteresis | Shuts down at 150°C junction temperature and resumes at 130°C - prevents thermal runaway during sustained 500 mA loads in confined enclosures. |
| Soft-start (100 μs) | Monotonic VOUT ramp limits inrush current - avoids input voltage sag on weak sources like coin-cell batteries or long PCB traces. |
Applications
| Portable Audio Playback | Low-Power DSP Core Supply |
|---|---|
Use Scenario: Powering stereo audio codecs and Class-D amplifiers in Bluetooth earbuds with single Li-ion cell. IC Role / Device Role / Timing Role: Primary voltage regulator converting 3.0–4.2 V battery to clean, low-noise 1.2 V for DSP core logic and memory interface. Use Value: 22 μA quiescent current extends playback time; forced PWM mode eliminates switching noise in analog audio path. | Use Scenario: Supplying real-time signal processing units in industrial wireless sensors operating from two alkaline AA cells. IC Role / Device Role / Timing Role: Efficient step-down converter delivering regulated 1.2 V to ARM Cortex-M0+ MCU core under dynamic load (10 mA–500 mA). Use Value: 2.05 V minimum input enables full battery utilization; 94% efficiency minimizes self-heating in sealed enclosures. |
| Digital Camera Image Sensor Bias | Wearable Health Monitor PMU |
Use Scenario: Providing stable 1.2 V bias to CMOS image sensor analog front-end in compact action cameras. IC Role / Device Role / Timing Role: Low-ripple power source with fast transient response to handle burst-mode sensor readout currents. Use Value: High PSRR (90 dB) suppresses digital switching noise from nearby processors; 12 mm² solution fits within tight camera module height budget. | Use Scenario: Central power management unit in ECG/PPG patches powered by rechargeable Li-polymer cells. IC Role / Device Role / Timing Role: Main system regulator supplying 1.2 V to ultra-low-power microcontroller and analog signal chain. Use Value: 0.6 mm max solution height meets wearable thickness constraints; thermal shutdown protects against skin-contact overheating. |
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 | Same package and 2 MHz frequency, but fixed 1.2 V output with identical specs - functionally identical except marking code. | No functional difference; both rated for –40°C to 125°C and share same electrical characteristics per datasheet Table 5. | Select TPS62232DRYR only if legacy BOM alignment or distributor stock availability dictates. |
| TPS62231DRYR | Same family, USON-6, 3 MHz switching, but fixed 1.8 V output - higher VOUT, different frequency, same 500 mA capability. | Suitable where system requires 1.8 V I/O or logic rail instead of 1.2 V core voltage; not drop-in due to output voltage mismatch. | Choose TPS62231DRYR when upgrading from 1.8 V legacy designs or when higher switching frequency improves EMI compliance. |
Compared with TPS62235DRYR, TPS62232DRYR offers identical performance and pinout but differs only in orderable marking; TPS62231DRYR provides 1.8 V at 3 MHz - useful for I/O rails but requires circuit redesign for core voltage replacement.
Availability
TPS62235DRYR is available at Aetrix Electronics and suitable for portable audio, low-power DSP core supply, and digital camera applications requiring stable component supply, consistent parametric performance, and long-term production support.
Supply support for TPS62235DRYR 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, designing and manufacturing analog ICs, embedded processors, and DLP technology for industrial, automotive, and consumer markets.
The TPS6223x product line delivers ultra-small, high-efficiency step-down converters optimized for battery-powered portable electronics where minimal PCB area, low quiescent current, and low-noise operation are critical design requirements.
FAQ
What is the fixed output voltage of the TPS62235DRYR?
The TPS62235DRYR has a factory-trimmed fixed output voltage of 1.2 V, with accuracy of ±2.5% over the full –40°C to 125°C junction temperature range. This value is set internally and requires no external feedback resistors - the FB pin connects directly to the output capacitor for regulation.
Does the TPS62235DRYR support forced PWM mode, and how is it enabled?
Yes, the TPS62235DRYR supports forced PWM mode. It is enabled by pulling the MODE pin high (to VIN level), which disables automatic PFM/PWM transition and locks the device into continuous 2 MHz switching - essential for noise-sensitive applications like audio or RF circuits where pulse skipping must be avoided.
What is the minimum input voltage required for the TPS62235DRYR to operate?
The TPS62235DRYR requires a minimum input voltage of 2.05 V to start and remain operational, as defined by its undervoltage lockout (UVLO) rising threshold. It continues functioning down to the falling UVLO threshold of 1.8 V, enabling full utilization of Li-primary or two-alkaline battery discharge curves.
Can the TPS62235DRYR be used to replace an LDO in a low-noise application?
Yes, the TPS62235DRYR is explicitly designed as an LDO replacement. Its high PSRR (up to 90 dB), low output voltage ripple in PFM mode, and ability to operate with small 2.2 μH / 4.7 μF filters make it suitable for noise-sensitive analog circuits - delivering >30% efficiency gain over typical LDOs while maintaining signal integrity.
What package type and dimensions does the TPS62235DRYR use?
The TPS62235DRYR uses the DRY package: a 6-pin USON (Ultra-Small Outline No-lead) measuring 1.0 mm × 1.5 mm × 0.6 mm nominal body size, with wettable flanks for solder inspection. Its thermal pad is exposed on the bottom and must be soldered to a PCB thermal plane for reliable 500 mA operation.
TPS62235DRYR 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):
- 1.2V
- 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)
TPS62235DRYR FAQ
1.How can I place an order for TPS62235DRYR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62235DRYR 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 TPS62235DRYR reliable?
The price and inventory of TPS62235DRYR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62235DRYR is usually 5 days.
3.What payment methods are accepted for TPS62235DRYR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62235DRYR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62235DRYR?
TPS62235DRYR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62235DRYR 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 TPS62235DRYR?
For technical support, including TPS62235DRYR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62235DRYR requirements.
6.How does Aetrix verify that TPS62235DRYR is sourced from the original manufacturer or authorized distributors?
All TPS62235DRYR 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 TPS62235DRYR meets industry standards.
7.What is the process for return or replacement of TPS62235DRYR?
All TPS62235DRYR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62235DRYR, 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 TPS62235DRYR part is unused and in its original packaging.
Return procedure for TPS62235DRYR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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