My Inquiry
My Account
Texas Instruments TPS62231DRYT
- Part No.:
- TPS62231DRYT
- Manufacturer:
- Texas Instruments
- Package:
- 6-UFDFN
- Datasheet:
-
TPS62231DRYT.pdf
- Description:
- IC REG BUCK 1.8V 500MA 6SON
- Quantity:
- Payment:
- Shipping:
Inventory:1,280
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS62231DRYT from Texas Instruments is a 3-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 1.8 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 power rails.
For engineers reviewing the TPS62231DRYT datasheet, TPS62231DRYT pinout, TPS62231DRYT application, or TPS62231DRYT equivalent, this device offers verified 3-MHz switching, 94% peak efficiency, forced-PWM mode support, 0.7 V internal reference, and thermal shutdown at 150°C - critical for low-noise audio, RF, and battery-powered DSP core supplies.
Technical Context
The TPS62231DRYT implements a hysteretic PWM controller topology enabling 3-MHz operation without external compensation, achieving excellent AC load regulation and sub-100 μs startup time. Its integrated high-side (600–850 mΩ) and low-side (350–480 mΩ) MOSFETs support continuous conduction mode in forced-PWM and discontinuous mode in power-save mode.
It features automatic transition between pulse frequency modulation (PFM) at light loads and quasi-fixed-frequency PWM at medium/heavy loads, with MODE pin control, undervoltage lockout (1.8 V falling threshold), and soft-start limiting inrush current during 100 μs ramp-up to 1.8 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 3 MHz - enables use of 1 μH inductors and compact 4.7 μF output capacitors, minimizing solution size to <12 mm². |
| Output Voltage | Fixed 1.8 V ±2.5% - optimized for low-power DSP cores, memory I/O, and RF bias rails requiring stable mid-rail voltage. |
| 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 dropout issues. |
| Max Output Current | 500 mA - sustained under thermal limits with RθJA = 294.5°C/W in DRY package; limited by internal 850 mA switch current. |
| Quiescent Current | 22 μA in PFM mode - extends battery life in always-on sensor or standby subsystems without sacrificing regulation. |
| Efficiency | Up to 94% - achieved at medium loads with minimal conduction and switching losses, reducing thermal stress in sealed enclosures. |
| PSRR | Up to 90 dB - suppresses input ripple and noise, making it suitable for noise-sensitive analog/RF circuitry. |
Pinout & Package
TPS62231DRYT is housed in a 1 mm × 1.5 mm × 0.6 mm, 6-pin USON (DRY) package with wettable flank terminations for automated optical inspection. The package footprint requires no thermal pad and supports ≤0.6 mm maximum solution height.
| 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 inductor; carries high dv/dt switching waveform - requires tight layout to minimize EMI and ringing. |
| VIN (Pin 3) | Input Power Supply | Accepts 2.05–6 V; must be decoupled with ≥2.2 μF ceramic capacitor close to pin to stabilize high-frequency operation. |
| GND (Pin 4) | Power Ground | Low-impedance return path for both input and output currents; connects internally to exposed thermal pad (if present). |
| EN (Pin 5) | Enable Input | Active-high logic; pulling low disables converter and reduces current to <1 μA - enables system-level power sequencing. |
| FB (Pin 6) | Feedback Input | Direct connection to output capacitor; senses regulated 1.8 V via internal 0.7 V reference and resistor divider (not required for fixed-output variants). |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small solution size | ≤12 mm² PCB area with only three external components (inductor + two capacitors) - ideal for wearables and hearing aids. |
| Optimized power-save mode | 22 μA IQ with low-output-ripple PFM operation - maintains regulation without audible coil whine in portable audio. |
| Forced PWM mode | Eliminates pulse skipping across full load range - enables deterministic EMI filtering and stable operation in noise-critical RF sections. |
| 100% duty cycle capability | Supports lowest possible dropout - sustains 1.8 V output even when VIN drops to 1.85 V, extending battery runtime. |
| Thermal shutdown with hysteresis | Triggers at 150°C junction temperature with 20°C hysteresis - prevents thermal runaway while allowing safe recovery without system reset. |
Applications
| Portable Audio Systems | Low-Power Wireless Transceivers |
|---|---|
Use Scenario: Powering DACs, headphone amplifiers, and MEMS microphones in Bluetooth earbuds. IC Role / Device Role / Timing Role: Primary 1.8 V supply rail regulator with ultra-low noise and high PSRR to preserve SNR and THD performance. Use Value: 90 dB PSRR and <100 μVPP output ripple (typ.) prevent digital switching noise from modulating analog audio paths. |
Use Scenario: Supplying 1.8 V to BLE/Wi-Fi SoCs during active transmit/receive bursts and deep-sleep states. IC Role / Device Role / Timing Role: Efficient buck converter supporting dynamic load steps from 10 μA to 500 mA with <100 μs transient response. Use Value: Seamless PFM-to-PWM transition ensures >90% efficiency at 20 μA sleep current and >92% at 100 mA TX load. |
| DSP Core Power Supply | Digital Camera Image Sensors |
Use Scenario: Delivering clean 1.8 V to low-power DSP cores in edge AI vision modules. IC Role / Device Role / Timing Role: High-efficiency, low-noise DC-DC regulator replacing inefficient LDOs to reduce thermal density on BGA substrates. Use Value: 94% peak efficiency cuts power dissipation by >50% vs. LDO, enabling higher compute density within 12 mm² board area. |
Use Scenario: Biasing CIS analog front-end and column ADCs in compact camera modules. IC Role / Device Role / Timing Role: Stable 1.8 V rail with fast startup (<100 μs) and pre-bias start capability for instant-on imaging. Use Value: Soft-start and 100% duty cycle allow reliable boot from partially discharged batteries without brownout resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62232DRYT | Fixed 1.2 V output; identical 3-MHz operation, package, and feature set. | Suitable for lower-voltage logic rails (e.g., ARM Cortex-M cores), not 1.8 V DSP I/O. | Select when target rail requires 1.2 V with same size/performance envelope. |
| TPS622311DRYT | 2-MHz switching frequency; same 1.8 V output, but lower frequency increases inductor size and reduces light-load efficiency. | Better EMI profile in narrowband systems; less suitable for ultra-compact layouts needing 1 μH inductors. | Choose where 2-MHz fundamental simplifies EMI filtering or when legacy 2-MHz design reuse is prioritized. |
Compared with TPS62232DRYT and TPS622311DRYT, the TPS62231DRYT uniquely delivers 1.8 V at 3 MHz in the smallest footprint, offering optimal balance of size, efficiency, and noise performance for portable 1.8 V rails - neither alternative matches its combination of output voltage, frequency, and solution area.
Availability
TPS62231DRYT is available at Aetrix Electronics and suitable for portable audio systems, low-power wireless transceivers, and DSP core power supplies requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62231DRYT 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 ICs, with decades of expertise in high-efficiency DC-DC conversion and signal chain solutions.
The TPS6223x product line was designed specifically for ultra-compact, high-frequency step-down regulation in battery-powered portable electronics - emphasizing minimal solution size, low IQ, and robust light-load efficiency without compromising transient response or noise performance.
FAQ
What is the switching frequency of the TPS62231DRYT?
The TPS62231DRYT operates at a nominal 3 MHz switching frequency. This high frequency allows the use of small 1 μH inductors and 4.7 μF ceramic output capacitors, enabling total solution sizes under 12 mm². The fixed 3-MHz operation is factory-trimmed and does not require external frequency-setting components.
Does the TPS62231DRYT support forced PWM mode?
Yes, the TPS62231DRYT supports forced PWM mode via the MODE pin. When MODE is pulled high (≥2.05 V), the device operates continuously in PWM mode across all load conditions - eliminating pulse skipping, ensuring predictable EMI, and maintaining constant switching frequency for easier filtering in RF-sensitive designs.
What is the minimum input voltage required for the TPS62231DRYT to operate?
The TPS62231DRYT has a minimum input voltage of 2.05 V, defined by its undervoltage lockout (UVLO) rising threshold. It remains functional down to the falling UVLO threshold of 1.8 V, enabling operation from deeply discharged Li-ion cells or two alkaline batteries - critical for maximizing battery runtime in portable devices.
Can the TPS62231DRYT start into a pre-biased output?
Yes, the TPS62231DRYT supports pre-biased start-up. When enabled, it begins regulating from the existing output voltage rather than discharging it, preventing bus contention in multi-rail systems. This behavior is inherent to its control architecture and requires no external circuitry or configuration.
What thermal protection features does the TPS62231DRYT include?
The TPS62231DRYT incorporates thermal shutdown that activates at 150°C junction temperature, turning off both high-side and low-side MOSFETs. It includes 20°C hysteresis, allowing safe restart once the die cools to ~130°C. This protects against sustained overload or poor PCB thermal design without requiring external thermal monitoring circuits.
TPS62231DRYT 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):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 500mA
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-SON (1.45x1)
TPS62231DRYT FAQ
1.How can I place an order for TPS62231DRYT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62231DRYT 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 TPS62231DRYT reliable?
The price and inventory of TPS62231DRYT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62231DRYT is usually 5 days.
3.What payment methods are accepted for TPS62231DRYT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62231DRYT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62231DRYT?
TPS62231DRYT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62231DRYT 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 TPS62231DRYT?
For technical support, including TPS62231DRYT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62231DRYT requirements.
6.How does Aetrix verify that TPS62231DRYT is sourced from the original manufacturer or authorized distributors?
All TPS62231DRYT 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 TPS62231DRYT meets industry standards.
7.What is the process for return or replacement of TPS62231DRYT?
All TPS62231DRYT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62231DRYT, 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 TPS62231DRYT part is unused and in its original packaging.
Return procedure for TPS62231DRYT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS62231DRYT Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
