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Texas Instruments TPS622315DRYT
- Part No.:
- TPS622315DRYT
- Manufacturer:
- Texas Instruments
- Package:
- 6-UFDFN
- Datasheet:
-
TPS622315DRYT.pdf
- Description:
- IC REG BUCK 1.15V 500MA 6SON
- Quantity:
- Payment:
- Shipping:
Inventory:728
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Product details
Overview
TPS622315DRYT 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 1.15 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 power rails.
For engineers reviewing the TPS622315DRYT datasheet, TPS622315DRYT pinout, TPS622315DRYT application, or TPS622315DRYT equivalent, key selection criteria include its 1.15 V fixed output, 2 MHz switching frequency, 6-pin USON thermal performance (RθJA = 294.5°C/W), forced-PWM capability via MODE pin, and compatibility with 2.2 μH inductors and 4.7 μF output capacitors in ≤12 mm² layouts.
Technical Context
The TPS622315DRYT implements a hysteretic PWM controller topology enabling stable 2 MHz operation with excellent AC load regulation and low output ripple-even at light loads-via optimized power-save mode pulse-skipping. Its internal 0.7 V reference feeds a precision feedback loop tied to the FB pin.
It integrates complementary PMOS/NMOS power switches with typical RDS(ON) of 600 mΩ (high-side) and 350 mΩ (low-side), supports 100% duty cycle for low-dropout operation, and features undervoltage lockout (1.8 V falling threshold) and thermal shutdown (150°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.15 V ±2.5% over –40°C to 125°C junction temperature - ensures stable core supply for low-voltage DSPs and MCUs. |
| Switching Frequency | 2 MHz nominal - enables use of small 2.2 μH inductors and reduces EMI filtering burden in noise-sensitive RF/audio designs. |
| Max Output Current | 500 mA continuous - supported by internal 850 mA high-side current limit and thermal design (RθJA = 294.5°C/W). |
| Quiescent Current | 22 μA in power-save mode - extends battery life in always-on portable sensors and wearables. |
| Input Voltage Range | 2.05 V to 6 V - compatible with single Li-ion (2.5–4.2 V), Li-primary, or two alkaline cells across full discharge curve. |
| Package | USON-6 (1.0 mm × 1.5 mm × 0.6 mm) - achieves <12 mm² PCB area and ≤0.6 mm height for ultra-thin end equipment. |
Pinout & Package
TPS622315DRYT uses a 6-pin USON (DRY) package with wettable flanks, measuring 1.0 mm × 1.5 mm × 0.6 mm, optimized for automated optical inspection and thermal dissipation via bottom-side copper exposure.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MODE (Pin 1) | 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 (Pin 2) | Switch node | Connects to external 2.2 μH inductor - carries high di/dt switching current; requires tight layout to minimize ringing and EMI. |
| VIN (Pin 3) | Input power supply | Accepts 2.05–6 V; requires local 2.2 μF ceramic capacitor - decouples high-frequency switching noise from source. |
| GND (Pin 4) | Power ground | Primary return path for power switches and feedback loop - must be connected to low-impedance PCB plane under IC body. |
| EN (Pin 5) | Enable input | Active-high logic; <0.6 V = shutdown (<1 μA ISD); >0.8 V = enabled - supports power sequencing with upstream regulators. |
| FB (Pin 6) | Feedback input | Direct connection to output capacitor - senses regulated 1.15 V via internal 0.7 V reference and resistorless fixed-output configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small solution size | ≤12 mm² total PCB area using only 2.2 μH inductor, 4.7 μF output cap, and 2.2 μF input cap - ideal for hearing aids and compact IoT nodes. |
| High PSRR (up to 90 dB) | Maintains clean 1.15 V rail despite noisy input sources (e.g., shared battery with RF transceivers) - reduces need for additional LDO post-regulation. |
| Optimized power-save mode | 22 μA IQ with low-output ripple even at 10–100 μA loads - avoids audible coil whine and preserves signal integrity in audio codecs. |
| Forced PWM mode | Eliminates variable-frequency PFM operation via MODE pin - enables deterministic EMI filter design and simplifies compliance testing. |
| 100% duty-cycle operation | Supports dropout as low as VOUT − VIN ≈ 0 V - sustains regulation during brownout conditions common in aging batteries. |
Applications
| Portable Audio Power | Low-Power Wireless MCU Core |
|---|---|
Use Scenario: Powering DAC/ADC sections and headphone amplifiers in Bluetooth earbuds with Li-ion battery input. IC Role / Device Role / Timing Role: Primary 1.15 V core regulator delivering clean, low-noise supply with <10 mVPP ripple at 100 kHz bandwidth. Use Value: Replaces discrete LDO + ferrite-bead filter, reducing BOM count by 3 components while improving efficiency from 65% to 92% at 100 mA. |
Use Scenario: Supplying 1.15 V core voltage to ARM Cortex-M0+ microcontrollers in BLE sensor nodes operating on coin-cell batteries. IC Role / Device Role / Timing Role: Always-on buck converter enabling 22 μA sleep-mode current and fast wake-up (<100 μs start-up time). Use Value: Extends battery life from 6 to 14 months by cutting quiescent loss vs. legacy linear regulators without sacrificing transient response. |
| Digital Camera Image Sensor Bias | Wearable Health Monitor Analog Front-End |
Use Scenario: Providing stable 1.15 V bias to CMOS image sensor analog blocks during burst capture sequences. IC Role / Device Role / Timing Role: High-PSRR step-down regulator rejecting switching noise from shared 3.3 V system rail during flash LED pulsing. Use Value: Prevents image banding artifacts by maintaining >90 dB PSRR at 1–10 MHz, eliminating need for separate low-noise LDO. |
Use Scenario: Powering ECG/PPG analog signal chains in wrist-worn health monitors where mechanical vibration induces supply noise. IC Role / Device Role / Timing Role: Compact, low-profile DC-DC converter with 0.6 mm max height fitting under curved display assemblies. Use Value: Achieves 12 mm² footprint and <0.6 mm profile - meets strict mechanical envelope while sustaining 94% peak efficiency at 200 mA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS622311DRYT | Fixed 1.1 V output; identical 2 MHz frequency, package, and feature set. | Suitable for slightly lower-voltage MCU cores (e.g., certain MSP430 variants) but not drop-in for 1.15 V requirements. | Select when target rail is 1.1 V and board layout allows no changes - same pinout and thermal behavior. |
| TPS62235DRYT | Fixed 1.2 V output; otherwise identical electrical specs and USON-6 package. | Used in higher-margin digital logic rails (e.g., FPGA I/O banks) where 50 mV higher VOUT is acceptable. | Choose if system tolerances allow 1.2 V instead of 1.15 V - avoids redesign but requires validation of downstream voltage margins. |
Compared with TPS622311DRYT and TPS62235DRYT, the TPS622315DRYT provides the precise 1.15 V needed for modern ultra-low-power DSP cores and mixed-signal SoCs, balancing efficiency, size, and voltage accuracy without requiring external feedback resistors or layout modifications.
Availability
TPS622315DRYT is available at Aetrix Electronics and suitable for portable audio, low-power wireless, and wearable health monitor applications requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for TPS622315DRYT 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 family was designed specifically for ultra-compact, battery-powered portable electronics - prioritizing minimal solution size, low quiescent current, and robust light-load efficiency without sacrificing transient response or noise performance.
FAQ
What is the exact output voltage of the TPS622315DRYT?
The TPS622315DRYT delivers a factory-trimmed fixed output voltage of 1.15 V with ±2.5% accuracy over –40°C to 125°C junction temperature. This value is set internally and requires no external feedback resistors - the FB pin connects directly to the output capacitor for regulation.
Does the TPS622315DRYT support forced PWM mode, and how is it enabled?
Yes, the TPS622315DRYT supports forced PWM mode via the MODE pin (Pin 1). Pulling MODE high (≥0.8 V) disables power-save mode and locks the device into quasi-fixed-frequency PWM operation across all load conditions - critical for EMI-controlled designs and noise-sensitive analog circuits.
What is the minimum input voltage required for the TPS622315DRYT to operate?
The TPS622315DRYT requires a minimum input voltage of 2.05 V to initiate startup and maintain regulation. Below this threshold, the undervoltage lockout circuit disables switching; the rising UVLO threshold is 1.9–2.05 V, ensuring reliable turn-on as battery voltage recovers.
Can the TPS622315DRYT be used with a pre-biased output capacitor?
Yes, the TPS622315DRYT supports start-up into a pre-biased output capacitor. Its soft-start circuitry ramps the output from the existing bias voltage to the nominal 1.15 V without causing reverse current or output overshoot - essential for hot-swap and multi-rail sequencing applications.
What thermal performance can be expected from the TPS622315DRYT in a standard PCB layout?
In a typical 2-layer PCB with 1-in² 1-oz copper pour under the DRY package, the TPS622315DRYT exhibits a junction-to-ambient thermal resistance (RθJA) of 294.5°C/W. At 500 mA output and 3.6 V input, this yields ~35°C junction rise above ambient - well within the –40°C to 125°C operating range.
TPS622315DRYT 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):
- 1.15V
- 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)
TPS622315DRYT FAQ
1.How can I place an order for TPS622315DRYT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS622315DRYT 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 TPS622315DRYT reliable?
The price and inventory of TPS622315DRYT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS622315DRYT is usually 5 days.
3.What payment methods are accepted for TPS622315DRYT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS622315DRYT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS622315DRYT?
TPS622315DRYT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS622315DRYT 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 TPS622315DRYT?
For technical support, including TPS622315DRYT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS622315DRYT requirements.
6.How does Aetrix verify that TPS622315DRYT is sourced from the original manufacturer or authorized distributors?
All TPS622315DRYT 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 TPS622315DRYT meets industry standards.
7.What is the process for return or replacement of TPS622315DRYT?
All TPS622315DRYT units undergo pre-shipment inspection (PSI). If there is an issue with TPS622315DRYT, 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 TPS622315DRYT part is unused and in its original packaging.
Return procedure for TPS622315DRYT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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