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Texas Instruments TPS622319DRYT
- Part No.:
- TPS622319DRYT
- Manufacturer:
- Texas Instruments
- Package:
- 6-UFDFN
- Datasheet:
-
TPS622319DRYT.pdf
- Description:
- IC REG BUCK 1.2V 500MA 6SON
- Quantity:
- Payment:
- Shipping:
Inventory:462
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Product details
Overview
TPS622319DRYT 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, 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 TPS622319DRYT datasheet, TPS622319DRYT pinout, TPS622319DRYT application, or TPS622319DRYT equivalent, key selection criteria include its integrated 1 MΩ EN/MODE pull-down resistor, forced PWM capability via MODE pin, 12 mm² minimum PCB solution size, and suitability for pre-biased start-up in battery-powered embedded designs.
Technical Context
The TPS622319DRYT implements a hysteretic PWM controller topology enabling 2 MHz fixed-frequency operation or automatic PFM/PWM transition based on load. Its internal 0.7 V reference feeds a precision error comparator that triggers switching upon output voltage deviation, with minimum ON-time of 135 ns and minimum OFF-time of 40 ns.
This device integrates both high-side (600–850 mΩ) and low-side (350–480 mΩ) MOSFETs, supports 100% duty cycle for low-dropout operation, and features undervoltage lockout (1.8 V falling threshold), thermal shutdown at 150°C, and soft-start with ~100 μs ramp time to nominal output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±2.5% over –40°C to 125°C junction temperature - ensures stable core supply for low-voltage DSPs and microcontrollers. |
| Input Voltage Range | 2.05 V to 6 V - supports single Li-ion, Li-primary, or dual alkaline batteries without external regulation. |
| Switching Frequency | 2 MHz - enables use of small 2.2 μH inductors and 4.7 μF output capacitors, minimizing solution footprint to <12 mm². |
| Max Output Current | 500 mA - sufficient for powering RF transceivers, audio codecs, or sensor hubs in portable devices. |
| Quiescent Current | 22 μA in power-save mode - extends battery life in always-on, low-duty-cycle applications like wearables. |
| Shutdown Current | <1 μA - enables deep-sleep system states with negligible leakage during standby. |
| Package | USON-6 (1.45 mm × 1.00 mm, 0.6 mm height) - ultra-thin, leadless package compatible with automated SMT assembly and high-density layouts. |
Pinout & Package
TPS622319DRYT is housed in a 6-pin USON (Ultra-Thin Small Outline No-lead) package measuring 1.45 mm × 1.00 mm × 0.6 mm, optimized for minimal PCB area and height. The exposed pad is not electrically connected and requires no solder connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MODE (Pin 1) | Mode control input | Internally pulled down via 1 MΩ resistor; logic-high forces PWM mode, logic-low enables auto PFM/PWM transition - eliminates need for external pull-down. |
| SW (Pin 2) | Switch node | Connects to external inductor; carries high dv/dt switching waveform - requires tight layout and ground plane isolation. |
| VIN (Pin 3) | Input power supply | Accepts 2.05–6 V; must be decoupled with ≥2.2 μF ceramic capacitor close to pin to suppress ripple and support peak current demands. |
| GND (Pin 4) | Power ground | Primary return path for high-current switch loop; must be tied directly to thermal pad and power plane for thermal and EMI performance. |
| EN (Pin 5) | Enable input | Internally pulled down via 1 MΩ resistor; logic-high enables regulator, logic-low places device in shutdown (<1 μA IQ) - simplifies power sequencing. |
| FB (Pin 6) | Feedback input | Monitors output voltage via internal 0.7 V reference; connects directly to output capacitor - no external resistor divider required for fixed-output variants. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated EN/MODE pull-down resistors | 1 MΩ on both pins - eliminates two external components and ensures defined startup/shutdown behavior without external biasing. |
| Pre-biased output start-up | Supports ramping from non-zero output voltage - prevents reverse current flow into powered downstream circuits during hot-plug or rail sequencing. |
| 100% duty cycle operation | Enables dropout as low as VIN – VOUT ≈ 0 V at light loads - critical for maintaining regulation near battery end-of-life (e.g., 2.05 V input → 1.2 V out). |
| High PSRR (up to 90 dB) | Maintains clean output under noisy input conditions - suitable for noise-sensitive analog/RF sections without additional LDO filtering. |
| Thermal shutdown with hysteresis | Triggers at 150°C, releases at 130°C - protects against sustained overload or poor thermal design while preventing thermal oscillation. |
Applications
| Portable Audio Playback | Low-Power Wireless Sensor Node |
|---|---|
|
Use Scenario: Powering a Class-D audio amplifier and MEMS microphone in a Bluetooth earbud with 300 mAh Li-ion cell. IC Role / Device Role / Timing Role: Primary DC-DC regulator supplying 1.2 V to digital audio processor core and I/O rails. Use Value: 22 μA quiescent current extends standby time; 2 MHz switching avoids audible noise; 12 mm² solution fits within 10×12 mm PCB constraint. |
Use Scenario: Supplying 1.2 V to an ultra-low-power sub-GHz transceiver (e.g., CC1310) and environmental sensor in a battery-operated IoT node. IC Role / Device Role / Timing Role: Main system regulator enabling deep-sleep current <1 μA via EN-controlled shutdown between transmissions. Use Value: Integrated pull-down resistors simplify BOM; 2.05 V minimum input supports full battery discharge down to 2.2 V; high PSRR rejects RF coupling from antenna. |
| Digital Camera Image Sensor Core | Wearable Health Monitor SoC |
|
Use Scenario: Delivering clean, low-noise 1.2 V to CMOS image sensor digital core in a compact action camera. IC Role / Device Role / Timing Role: High-efficiency buck converter replacing linear regulator to reduce thermal load on stacked-die module. Use Value: 94% peak efficiency minimizes self-heating; 2 MHz operation allows ceramic filter components smaller than 0805 size; PFM mode maintains low ripple at 10–100 μA active current. |
Use Scenario: Regulating 1.2 V for an ARM Cortex-M0+ MCU and optical heart-rate sensor ASIC in a wrist-worn fitness tracker. IC Role / Device Role / Timing Role: Single-chip power solution supporting dynamic voltage scaling and rapid wake-up from sleep modes. Use Value: Soft-start limits inrush current during wake-up; pre-biased start-up prevents brown-out when sensor wakes before MCU; USON-6 footprint matches 0.4 mm pitch flex PCB routing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62235DRYT | Same USON-6 package and 2 MHz frequency, but fixed 1.2 V output without integrated EN/MODE pull-down resistors - requires external 1 MΩ resistors on both pins. | Suitable where board space permits two 0402 resistors and design requires explicit control over enable timing or mode selection. | Select TPS62235DRYT only if external resistor biasing is preferred for timing margining or compatibility with legacy layout. |
| TPS62231DRYT | 3 MHz switching frequency, fixed 1.8 V output, no integrated pull-down resistors - higher frequency enables smaller inductors but incompatible output voltage and biasing scheme. | Better suited for 1.8 V I/O rails or applications requiring faster transient response, but not drop-in for 1.2 V core supply with simplified enable. | Choose TPS62231DRYT only when 1.8 V output and 3 MHz operation are required; not a functional substitute for TPS622319DRYT's 1.2 V + integrated pull-down combination. |
Compared with TPS62235DRYT and TPS62231DRYT, the TPS622319DRYT uniquely combines fixed 1.2 V output, 2 MHz operation, and factory-integrated 1 MΩ pull-downs on both EN and MODE - reducing component count, improving reliability, and simplifying layout for space- and power-critical 1.2 V core supplies.
Availability
TPS622319DRYT is available at Aetrix Electronics and suitable for portable audio playback, low-power wireless sensor nodes, and wearable health monitors requiring stable component supply across production lifecycles.
Supply support for TPS622319DRYT 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 and embedded processing technologies, with leadership in power management ICs for portable, industrial, and automotive markets.
The TPS6223x product line was designed specifically for ultra-small-footprint, high-efficiency DC-DC conversion in battery-powered portable electronics - emphasizing minimal external component count, low quiescent current, and robust operation across wide input voltage and temperature ranges.
FAQ
What is the output voltage tolerance of the TPS622319DRYT over temperature?
The TPS622319DRYT delivers a fixed 1.2 V output with ±2.5% accuracy over the full operating junction temperature range of –40°C to 125°C. This specification is guaranteed by internal trimming of the 0.7 V reference and feedback network, ensuring stable core voltage for sensitive digital loads without external calibration.
Does the TPS622319DRYT require external pull-down resistors on EN and MODE pins?
No - the TPS622319DRYT integrates a 1 MΩ pull-down resistor on both EN and MODE pins, eliminating the need for external biasing components. This feature simplifies schematic design, reduces BOM count, and guarantees defined low-state behavior during power-up and reset sequences.
Can the TPS622319DRYT start up into a pre-biased output capacitor?
Yes, the TPS622319DRYT supports pre-biased start-up: it safely ramps the output from an existing voltage (e.g., residual charge on output cap) to the regulated 1.2 V without injecting reverse current. This capability is essential for hot-swap operation and multi-rail power sequencing in complex portable systems.
What is the minimum input voltage required for the TPS622319DRYT to regulate properly?
The TPS622319DRYT requires a minimum input voltage of 2.05 V to maintain regulation. Below this threshold, the device enters undervoltage lockout (UVLO) and disables switching. The rising UVLO threshold is 1.9–2.05 V, allowing reliable restart as battery voltage recovers after transient sag.
How does the TPS622319DRYT achieve high PSRR despite being a switching regulator?
The TPS622319DRYT achieves up to 90 dB PSRR through its hysteretic PWM control architecture, fast error comparator response, and optimized internal compensation. Unlike conventional voltage-mode controllers, its direct output voltage sensing and short propagation delay minimize sensitivity to input ripple - making it viable for RF and audio supply domains traditionally served by LDOs.
TPS622319DRYT 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)
TPS622319DRYT FAQ
1.How can I place an order for TPS622319DRYT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS622319DRYT 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 TPS622319DRYT reliable?
The price and inventory of TPS622319DRYT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS622319DRYT is usually 5 days.
3.What payment methods are accepted for TPS622319DRYT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS622319DRYT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS622319DRYT?
TPS622319DRYT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS622319DRYT 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 TPS622319DRYT?
For technical support, including TPS622319DRYT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS622319DRYT requirements.
6.How does Aetrix verify that TPS622319DRYT is sourced from the original manufacturer or authorized distributors?
All TPS622319DRYT 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 TPS622319DRYT meets industry standards.
7.What is the process for return or replacement of TPS622319DRYT?
All TPS622319DRYT units undergo pre-shipment inspection (PSI). If there is an issue with TPS622319DRYT, 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 TPS622319DRYT part is unused and in its original packaging.
Return procedure for TPS622319DRYT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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