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Texas Instruments TPS62236DRYT
- Part No.:
- TPS62236DRYT
- Manufacturer:
- Texas Instruments
- Package:
- 6-UFDFN
- Datasheet:
-
TPS62236DRYT.pdf
- Description:
- IC REG BUCK 1.85V 500MA 6SON
- Quantity:
- Payment:
- Shipping:
Inventory:2,250
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Product details
Overview
TPS62236DRYT 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 1.85 V output voltage, 2.05–6 V input range, and 22 μA quiescent current in power-save mode. It serves as an ultra-compact, high-efficiency replacement for LDOs in space-constrained portable audio and low-power wireless systems.
For engineers reviewing the TPS62236DRYT datasheet, TPS62236DRYT pinout, TPS62236DRYT application, or TPS62236DRYT equivalent, key selection criteria include its 1.85 V fixed output, forced-PWM/PSM dual-mode operation, 6-pin USON thermal performance (RθJA = 294.5°C/W), and compatibility with 2.2 μH inductors and 4.7 μF output capacitors in sub-12 mm² layouts.
Technical Context
The TPS62236DRYT implements a hysteretic PWM controller topology enabling stable 2 MHz switching with excellent AC load regulation and <90 dB PSRR-critical for noise-sensitive RF and audio supply rails. Its internal 0.7 V reference feeds a precision feedback loop tied to the FB pin, supporting ±2.5% output accuracy across –40°C to 125°C junction temperature.
It integrates complementary PMOS/NMOS power switches with typical RDS(ON) of 600 mΩ (high-side) and 350 mΩ (low-side), enabling 100% duty-cycle operation for low-dropout scenarios and thermal shutdown at 150°C with 20°C hysteresis. MODE pin control allows deterministic transition between PFM (light-load efficiency) and forced-PWM (noise-filterable fixed-frequency) modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.85 V - eliminates external resistor divider, ensures stable core voltage for DSPs and low-power MCUs. |
| Switching Frequency | 2 MHz - enables use of small 2.2 μH inductors and supports compact PCB layout under 12 mm² total area. |
| Max Output Current | 500 mA - sufficient for powering single-core processors, camera ISPs, or Bluetooth SoCs without thermal derating in DRY package. |
| Quiescent Current | 22 μA (PSM mode) - extends battery life in always-on sensor nodes and standby audio subsystems. |
| Input Voltage Range | 2.05 V to 6 V - supports single Li-ion (2.5–4.2 V), two alkaline (2.0–3.2 V), or Li-primary cells without external regulators. |
| Efficiency | Up to 94% - reduces heat generation in sealed enclosures and improves runtime over linear regulators in portable media devices. |
| Thermal Resistance | RθJA = 294.5°C/W - requires minimal copper pour for reliable operation at full load in ambient ≤60°C. |
Pinout & Package
TPS62236DRYT uses a 6-pin USON (DRY) package measuring 1.45 mm × 1.00 mm × 0.6 mm, optimized for ultra-thin (<0.6 mm height) and ultra-small (<12 mm²) PCB footprints.
| 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 EMI filtering in noise-critical applications. |
| SW | Power Switch Node | Connects to external 2.2 μH inductor; carries high di/dt switching current-requires tight layout with short trace and ground plane return. |
| 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 ripple. |
| FB | Feedback Input | Direct connection to output capacitor; sets regulated 1.85 V via internal 0.7 V reference-no external resistors needed. |
| EN | Enable Input | Active-high logic control; pulling low disables converter and reduces current draw to <1 μA-supports system-level power sequencing. |
| GND | Power Ground | Primary return path for VIN, SW, and internal circuitry; must be connected to solid ground plane beneath package for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small solution size | 12 mm² footprint with only three external components (inductor + two capacitors)-ideal for wearables and hearing aids. |
| High PSRR (up to 90 dB) | Maintains clean 1.85 V rail despite noisy input sources like shared battery rails or switching pre-regulators. |
| Optimized power-save mode | Delivers <10 mVPP output ripple at light loads using 4.7 μF output cap-avoids audible coil whine in portable audio. |
| 100% duty cycle capability | Supports dropout as low as VOUT − VIN ≈ 0 V-enables operation near battery end-of-life in coin-cell-powered sensors. |
| Integrated soft-start | Ramps output to 1.85 V in ~100 μs with controlled inrush-prevents input voltage sag on weak sources like thin PCB traces or aging batteries. |
Applications
| Portable Audio Supply | Low-Power Wireless Node |
|---|---|
Use Scenario: Powering DACs, headphone amplifiers, and MEMS microphones in Bluetooth earbuds. IC Role / Device Role / Timing Role: Primary 1.85 V analog supply rail with ultra-low noise and ripple for signal chain integrity. Use Value: 90 dB PSRR and PFM-optimized low ripple preserve SNR >105 dB and eliminate audible artifacts during playback. | Use Scenario: Supplying Nordic nRF52832 or TI CC2642R in battery-operated IoT sensors. IC Role / Device Role / Timing Role: Efficient 1.85 V core voltage source enabling deep-sleep current <1 μA and fast wake-up response. Use Value: 22 μA quiescent current in PSM extends 200 mAh coin-cell life to >5 years in periodic transmit mode. |
| DSP Core Supply | Digital Camera ISP |
Use Scenario: Delivering stable 1.85 V to C55x or C674x DSP cores in portable medical ultrasound units. IC Role / Device Role / Timing Role: High-transient-response buck regulator maintaining voltage within ±2.5% during burst processing. Use Value: 2 MHz switching and fast soft-start ensure <100 μs recovery from sleep states without brownout resets. | Use Scenario: Powering image signal processors in compact action cameras with rolling-shutter CMOS sensors. IC Role / Device Role / Timing Role: Low-noise, low-ripple 1.85 V I/O and core supply preventing pixel noise and color banding. Use Value: Forced-PWM mode eliminates variable-frequency switching noise that corrupts high-gain analog video paths. |
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 output voltage. | Suitable where 1.8 V (not 1.85 V) aligns with SoC core requirements-no layout change required. | Select when target SoC specifies nominal 1.8 V core voltage with ±50 mV tolerance. |
| TPS62237DRYT | Fixed 3.3 V output; same 2 MHz frequency, USON-6 package, and feature set. | Used for I/O or peripheral rail instead of core rail-requires separate feedback network if adjustable output needed. | Choose for 3.3 V logic interface supply where higher voltage margin supports level-shifting or legacy peripherals. |
Compared with TPS62236DRYT, TPS62231DRYT offers identical performance at 1.8 V-ideal for standard ARM Cortex-M cores-while TPS62237DRYT provides 3.3 V for interface domains; neither requires PCB revision, but output voltage mismatch must match system rail architecture.
Availability
TPS62236DRYT is available at Aetrix Electronics and suitable for portable audio, low-power wireless, and DSP core supply applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62236DRYT 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 leader specializing in analog, embedded processing, and power management technologies, with decades of expertise 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 robust noise performance in sub-2 mm² footprints.
FAQ
What is the fixed output voltage of the TPS62236DRYT?
The TPS62236DRYT delivers a factory-trimmed fixed output voltage of 1.85 V with ±2.5% accuracy across –40°C to 125°C junction temperature. This eliminates the need for external feedback resistors and ensures stable core voltage for low-voltage DSPs and wireless SoCs without calibration overhead.
Does the TPS62236DRYT require external feedback resistors?
No, the TPS62236DRYT does not require external feedback resistors. It uses an internal resistor divider referenced to a 0.7 V bandgap, configured for a fixed 1.85 V output. The FB pin connects directly to the output capacitor, simplifying layout and reducing BOM count by two precision resistors.
How does the MODE pin affect TPS62236DRYT operation?
When the MODE pin is pulled low, the TPS62236DRYT operates in automatic power-save mode (PFM at light loads, PWM at heavy loads). When pulled high, it forces continuous PWM mode across all load conditions-enabling predictable EMI filtering and eliminating variable-frequency switching noise in sensitive analog circuits.
What is the minimum input voltage required for TPS62236DRYT startup?
The TPS62236DRYT requires a minimum input voltage of 2.05 V to initiate startup, per its undervoltage lockout (UVLO) rising threshold. It remains functional down to the falling UVLO threshold of 1.8 V, allowing extended operation into battery discharge tails for single-cell Li-ion and dual-alkaline systems.
Can the TPS62236DRYT start into a prebiased output?
Yes, the TPS62236DRYT supports start-up into a prebiased output capacitor. Its internal soft-start circuit detects the existing output voltage and ramps monotonically to 1.85 V without reverse current flow or output overshoot-critical for hot-swap and multi-rail sequencing in portable systems.
TPS62236DRYT 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):
- 1.85V
- 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)
TPS62236DRYT FAQ
1.How can I place an order for TPS62236DRYT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62236DRYT 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 TPS62236DRYT reliable?
The price and inventory of TPS62236DRYT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62236DRYT is usually 5 days.
3.What payment methods are accepted for TPS62236DRYT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62236DRYT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62236DRYT?
TPS62236DRYT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62236DRYT 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 TPS62236DRYT?
For technical support, including TPS62236DRYT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62236DRYT requirements.
6.How does Aetrix verify that TPS62236DRYT is sourced from the original manufacturer or authorized distributors?
All TPS62236DRYT 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 TPS62236DRYT meets industry standards.
7.What is the process for return or replacement of TPS62236DRYT?
All TPS62236DRYT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62236DRYT, 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 TPS62236DRYT part is unused and in its original packaging.
Return procedure for TPS62236DRYT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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