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Texas Instruments TPS622319DRYR
- Part No.:
- TPS622319DRYR
- Manufacturer:
- Texas Instruments
- Package:
- 6-UFDFN
- Datasheet:
-
TPS622319DRYR.pdf
- Description:
- IC REG BUCK 1.2V 500MA 6SON
- Quantity:
- Payment:
- Shipping:
Inventory:4,906
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Product details
Overview
TPS622319DRYR 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 battery-powered systems.
For engineers reviewing the TPS622319DRYR datasheet, TPS622319DRYR pinout, TPS622319DRYR application, or TPS622319DRYR 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 low-noise portable audio and RF supply rails.
Technical Context
The TPS622319DRYR implements a hysteretic PWM controller topology enabling stable 2 MHz switching with excellent AC load regulation and <1% output voltage ripple across 0–500 mA loads. Its internal 0.7 V reference and precision feedback loop achieve ±2.5% output accuracy over –40°C to 125°C junction temperature.
Unlike standard buck controllers, it supports true PFM-to-PWM auto-transition with optimized light-load efficiency and includes undervoltage lockout (1.8 V falling threshold), thermal shutdown (150°C), and soft-start (100 μs typical rise time). The integrated 1 MΩ pull-down on EN and MODE pins eliminates external biasing components - a distinguishing feature versus other TPS6223x variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±2.5% over –40°C to 125°C - enables direct core supply for low-voltage DSPs and microcontrollers without external resistive divider. |
| Input Voltage Range | 2.05 V to 6 V - supports single Li-ion (2.5–4.2 V), Li-primary, or two alkaline cells without dropout issues. |
| Switching Frequency | 2 MHz - allows use of 2.2 μH inductors and 4.7 μF ceramic output capacitors, minimizing solution footprint to <12 mm². |
| Quiescent Current | 22 μA in power-save mode - extends battery life in always-on sensor nodes and standby circuits. |
| Output Current | Up to 500 mA continuous - sufficient for powering ARM Cortex-M cores, Bluetooth SoCs, and image sensors. |
| Shutdown Current | <1 μA - ensures negligible drain during system sleep modes. |
| Thermal Shutdown | 150°C with 20°C hysteresis - protects against sustained overload or poor PCB thermal design. |
Pinout & Package
TPS622319DRYR uses a 6-pin 1.0 mm × 1.5 mm × 0.6 mm USON (DRY) package with wettable flanks. The exposed pad is electrically connected to GND and must be soldered for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MODE | Mode control input | Internally pulled down via 1 MΩ resistor; tie to VIN to force PWM mode, leave floating or grounded for auto PFM/PWM transition. |
| SW | Power switch node | Connects to external 2.2 μH inductor; carries high-frequency switching current - requires short, low-inductance layout. |
| VIN | Input power supply | Accepts 2.05–6 V; requires local 2.2 μF ceramic decoupling capacitor placed within 2 mm of pin. |
| FB | Feedback input | Direct connection to output capacitor; no external resistor divider needed due to fixed 1.2 V output. |
| EN | Enable input | Internally pulled down via 1 MΩ resistor; logic-high (>0.8 V) enables operation, logic-low (<0.6 V) disables with <1 μA shutdown current. |
| GND | Power ground | Primary return path for input/output currents and IC substrate; must connect to exposed thermal pad and system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated EN/MODE pull-down | 1 MΩ resistor on both pins eliminates need for external biasing components - reduces BOM count and PCB area. |
| Ultra-small solution size | 12 mm² total area with 2.2 μH inductor and 4.7 μF output capacitor - fits in wearable and hearing aid form factors. |
| High PSRR (up to 90 dB) | Maintains clean 1.2 V rail under noisy input conditions - suitable for RF transceivers and ADC reference supplies. |
| 100% duty cycle capability | Enables lowest possible dropout - sustains regulation even when VIN drops to 1.2 V + diode drop (e.g., ~1.3 V). |
| Soft-start timing | 100 μs typical output ramp - prevents inrush current and input voltage sag during startup from weak sources like coin cells. |
Applications
| Portable Audio Playback | Bluetooth Low Energy Sensor Node |
|---|---|
Use Scenario: Powering DAC, headphone amplifier, and MEMS microphone in compact wireless earbuds. IC Role / Device Role / Timing Role: Primary 1.2 V core supply for audio codec ICs requiring low noise and fast transient response. Use Value: 90 dB PSRR and <1% output ripple ensure minimal audible noise and distortion during playback. | Use Scenario: Supplying nRF52832 SoC and environmental sensors in battery-operated industrial IoT tags. IC Role / Device Role / Timing Role: Main system regulator delivering 500 mA peak current during BLE advertising bursts. Use Value: 22 μA quiescent current extends 200 mAh coin cell life to >2 years in 1-second advertising interval. |
| Digital Camera Image Sensor Bias | Low-Power DSP Core Supply |
Use Scenario: Providing clean 1.2 V bias to CMOS image sensor analog front-end in action cameras. IC Role / Device Role / Timing Role: Noise-sensitive analog supply rail with tight regulation during rapid exposure changes. Use Value: Excellent AC load regulation maintains <±5 mV deviation during 100 mA step transients - prevents image banding. | Use Scenario: Powering TMS320C55xx DSP core in portable medical ultrasound devices. IC Role / Device Role / Timing Role: Fixed-output buck converter replacing discrete LDO to improve thermal performance at 400 MHz clock speeds. Use Value: 94% peak efficiency at 300 mA reduces die temperature by 12°C vs. LDO, enabling fanless enclosure design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS622312DRYR | Fixed 2.0 V output; same 2 MHz frequency, package, and EN/MODE pull-down; no 1.2 V option. | Used where higher core voltage required (e.g., legacy microcontrollers); not suitable for 1.2 V DSP cores. | Select only if target system requires 2.0 V - otherwise incompatible due to fixed output mismatch. |
| TPS62235DRYR | Fixed 1.2 V output but no integrated EN/MODE pull-down; requires external 1 MΩ resistors; same 2 MHz frequency and package. | Suitable for designs needing identical regulation but allowing external bias control; adds 2 passive components. | Choose when board-level control of EN/MODE state is preferred over internal pull-down; increases BOM and layout complexity. |
Compared with TPS622312DRYR and TPS62235DRYR, the TPS622319DRYR uniquely combines 1.2 V output, 2 MHz operation, and factory-integrated 1 MΩ pull-downs - eliminating external biasing while maintaining pin compatibility and PCB footprint.
Availability
TPS622319DRYR is available at Aetrix Electronics and suitable for portable audio, Bluetooth sensor nodes, and digital camera image sensor biasing requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS622319DRYR 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, specializing in analog, embedded processing, and power management technologies for industrial, automotive, and consumer markets.
The TPS6223x product line was designed specifically for ultra-compact, high-efficiency DC-DC conversion in battery-powered portable electronics - prioritizing minimal solution size, low quiescent current, and robust light-load performance.
FAQ
What is the output voltage tolerance of the TPS622319DRYR over temperature?
The TPS622319DRYR has 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 includes initial tolerance, line regulation, load regulation, and thermal drift - verified per TI's SLVS941G production data sheet. The TPS622319DRYR achieves this using a precision internal 0.7 V reference and trimmed feedback network.
Does the TPS622319DRYR require external resistors on the EN or MODE pins?
No, the TPS622319DRYR does not require external resistors on EN or MODE. It integrates a 1 MΩ pull-down resistor on both pins - a unique feature among the TPS6223x family. This eliminates the need for external biasing components, reducing BOM count and PCB area. Other variants like TPS62235DRYR require external 1 MΩ resistors for the same functionality.
What is the minimum recommended input voltage for reliable startup of the TPS622319DRYR?
The minimum recommended input voltage for reliable startup of the TPS622319DRYR is 2.05 V. Below this, the device remains in undervoltage lockout (UVLO) with the rising threshold set at 1.9–2.05 V. Startup occurs once VIN exceeds the rising UVLO threshold, and the internal soft-start circuit ramps the 1.2 V output within 100 μs. The TPS622319DRYR remains functional down to the falling UVLO threshold of 1.8–1.9 V.
Can the TPS622319DRYR operate in forced PWM mode across the entire load range?
Yes, the TPS622319DRYR can operate in forced PWM mode across the entire load range by pulling the MODE pin high (≥0.8 V). In this mode, pulse skipping is disabled, switching frequency remains quasi-fixed near 2 MHz, and output ripple is reduced - beneficial for noise-sensitive RF or audio applications. Unlike power-save mode, forced PWM maintains continuous conduction even at zero load.
What thermal considerations apply to the TPS622319DRYR in a 12 mm² PCB layout?
The TPS622319DRYR has a junction-to-ambient thermal resistance (RθJA) of 294.5°C/W in the DRY (USON-6) package. In a minimal 12 mm² layout with only top-side copper, power dissipation above ~120 mW may cause junction temperatures to exceed 125°C. To maintain reliability, ensure the exposed thermal pad is fully soldered to a solid GND plane, use thermal vias under the pad, and limit continuous output current to ≤350 mA at 3.6 V input per TI's recommended operating conditions.
TPS622319DRYR 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)
TPS622319DRYR FAQ
1.How can I place an order for TPS622319DRYR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS622319DRYR 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 TPS622319DRYR reliable?
The price and inventory of TPS622319DRYR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS622319DRYR is usually 5 days.
3.What payment methods are accepted for TPS622319DRYR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS622319DRYR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS622319DRYR?
TPS622319DRYR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS622319DRYR 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 TPS622319DRYR?
For technical support, including TPS622319DRYR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS622319DRYR requirements.
6.How does Aetrix verify that TPS622319DRYR is sourced from the original manufacturer or authorized distributors?
All TPS622319DRYR 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 TPS622319DRYR meets industry standards.
7.What is the process for return or replacement of TPS622319DRYR?
All TPS622319DRYR units undergo pre-shipment inspection (PSI). If there is an issue with TPS622319DRYR, 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 TPS622319DRYR part is unused and in its original packaging.
Return procedure for TPS622319DRYR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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