My Inquiry
My Account
Texas Instruments TPS62235DRYT
- Part No.:
- TPS62235DRYT
- Manufacturer:
- Texas Instruments
- Package:
- 6-UFDFN
- Datasheet:
-
TPS62235DRYT.pdf
- Description:
- IC REG BUCK 1.2V 500MA 6SON
- Quantity:
- Payment:
- Shipping:
Inventory:911
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS62235DRYT 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 TPS62235DRYT datasheet, TPS62235DRYT pinout, TPS62235DRYT application, or TPS62235DRYT equivalent, key selection criteria include its 1.2 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 sub-12 mm² layouts.
Technical Context
The TPS62235DRYT implements a hysteretic PWM controller topology enabling stable 2 MHz operation 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 voltage accuracy across –40°C to 125°C junction temperature.
It integrates dual MOSFET power switches (600 mΩ high-side, 350 mΩ low-side typical RDS(ON)), programmable functional modes via EN and MODE pins, and thermal shutdown at 150°C with 20°C hysteresis. The device operates in automatic PFM/PWM transition or forced-PWM mode, with minimum ON/OFF times of 135 ns / 40 ns respectively.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V - eliminates external resistor divider, reduces BOM count and layout sensitivity. |
| Switching Frequency | 2 MHz - enables use of small 2.2 μH inductors and supports compact, high-density PCB designs. |
| Max Output Current | 500 mA - sufficient for DSP core, MCU I/O, or sensor subsystems in portable devices. |
| 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. |
| Quiescent Current | 22 μA (PFM mode) - extends battery life in always-on, low-duty-cycle applications like wearables. |
| Shutdown Current | <1 μA - ensures negligible drain during system sleep or standby states. |
| Thermal Shutdown | 150°C with 20°C hysteresis - protects against sustained overload or poor heatsinking in sealed enclosures. |
Pinout & Package
TPS62235DRYT uses a 6-pin 1 mm × 1.5 mm × 0.6 mm USON (DRY) package with wettable flank terminations for reliable automated optical inspection (AOI). The exposed pad is electrically connected to GND and must be soldered to PCB thermal land for optimal thermal performance (RθJB = 166.1°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MODE (Pin 1) | Mode control input | Pull low for auto PFM/PWM transition; pull high for forced PWM - enables deterministic EMI filtering or low-noise operation. |
| SW (Pin 2) | Power switch node | Connects to inductor; carries high di/dt switching current - requires short, low-inductance trace and local decoupling. |
| VIN (Pin 3) | Main power input | Accepts 2.05–6 V; requires ≥2.2 μF ceramic input capacitor placed adjacent to pin for stability and ripple suppression. |
| GND (Pin 4) | Power ground | Common return for VIN, SW, FB, EN, MODE; must connect directly to thermal pad and solid ground plane. |
| EN (Pin 5) | Enable input | Active-high logic; must be terminated (no floating); drives shutdown state with <1 μA leakage when low. |
| FB (Pin 6) | Feedback input | Direct connection to output capacitor; senses regulated 1.2 V via internal 0.7 V reference - no external resistors needed. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small solution size | ≤12 mm² total PCB area - achieved with 1.0 mm × 1.5 mm IC, 2.2 μH inductor, and 4.7 μF output capacitor. |
| High PSRR (up to 90 dB) | Rejects input ripple and noise up to 100 kHz - suitable for powering analog/RF sections without additional LDO staging. |
| Optimized power-save mode | Maintains low output ripple (<10 mVPP) even at light loads using PFM with >20 kHz minimum frequency - avoids audible noise. |
| 100% duty cycle capability | Enables lowest possible dropout - supports VOUT = 1.2 V with VIN as low as 1.25 V under light load. |
| Integrated soft-start | Monotonic 100 μs ramp-up time - prevents inrush current and input voltage sag on weak sources like coin cells. |
Applications
| Portable Audio Power | Low-Power Wireless Node |
|---|---|
|
Use Scenario: Powering DAC, headphone amplifier, and MEMS microphone in Bluetooth earbuds. IC Role / Device Role / Timing Role: Primary 1.2 V supply rail for analog signal chain and digital baseband processor. Use Value: 90 dB PSRR suppresses switching noise from affecting audio SNR; 22 μA quiescent current extends playback time between charges. |
Use Scenario: Supplying BLE SoC (e.g., CC2640R2F) and environmental sensors in battery-powered IoT tags. IC Role / Device Role / Timing Role: Main system regulator delivering 1.2 V to core logic and RF transceiver during active transmit/receive bursts. Use Value: 500 mA peak current supports 10 ms TX pulses; forced-PWM mode ensures consistent timing for RF calibration sequences. |
| DSP Core Supply | Digital Camera Sensor Bias |
|
Use Scenario: Providing clean 1.2 V to low-power DSP cores (e.g., C55x, C674x derivatives) in portable medical imaging devices. IC Role / Device Role / Timing Role: High-efficiency, low-noise core voltage regulator with fast transient response to dynamic workload changes. Use Value: Excellent AC load regulation minimizes voltage droop during FFT computation bursts; 2 MHz switching avoids interference with image sensor clock domains. |
Use Scenario: Biasing CMOS image sensor analog front-end (AFE) and column ADC in compact action cameras. IC Role / Device Role / Timing Role: Stable 1.2 V reference-grade supply for precision analog circuitry requiring minimal ripple and drift. Use Value: Fixed 1.2 V output eliminates resistor tolerance errors; 0.7 V internal reference ensures tight line/load regulation (±0.001%/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 |
|---|---|---|---|
| TPS62232DRYT | Same 1.2 V output and USON-6 package, but 3 MHz switching frequency - higher frequency allows smaller inductor (1.5 μH typical) but increases switching losses at >300 mA. | Better suited for ultra-thin designs where height <0.6 mm is critical and load currents remain ≤300 mA. | Select TPS62232DRYT only if board space permits tighter component placement and thermal margin supports higher fSW losses. |
| TPS622315DRYT | 1.15 V fixed output, 2 MHz, identical package and pinout - differs only in output voltage; shares same electrical specs and thermal behavior. | Used where SoC core voltage requires 1.15 V instead of 1.2 V, such as certain ARM Cortex-M4F implementations with adaptive voltage scaling. | Choose TPS622315DRYT when exact 1.15 V is mandated by processor datasheet; otherwise, TPS62235DRYT provides wider margin for aging or temperature drift. |
Compared with TPS62232DRYT and TPS622315DRYT, the TPS62235DRYT offers the optimal balance of 1.2 V output compatibility, 2 MHz efficiency vs. size trade-off, and proven thermal performance in production wearable and sensor designs - making it the preferred choice for general-purpose 1.2 V core rail applications.
Availability
TPS62235DRYT is available at Aetrix Electronics and suitable for portable audio, low-power wireless nodes, and DSP core supply applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across manufacturing lots.
Supply support for TPS62235DRYT 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 over 90 years of innovation in energy-efficient electronics.
The TPS6223x product line was engineered specifically for ultra-compact, high-efficiency DC-DC conversion in battery-powered portable devices - prioritizing minimal solution size, low quiescent current, and robust noise performance in constrained form factors.
FAQ
What is the fixed output voltage of the TPS62235DRYT?
The TPS62235DRYT delivers a factory-trimmed fixed output voltage of 1.2 V with ±2.5% accuracy across –40°C to 125°C junction temperature. This eliminates the need for external feedback resistors and ensures consistent regulation without BOM or layout dependencies - a key advantage over adjustable converters in high-volume portable designs.
Does the TPS62235DRYT require external feedback resistors?
No, the TPS62235DRYT does not require external feedback resistors. It uses an internal resistor divider referenced to a 0.7 V bandgap, configured for 1.2 V output. The FB pin connects directly to the output capacitor, simplifying layout, reducing component count, and improving long-term stability versus resistor-based solutions subject to drift or mismatch.
How does the MODE pin affect TPS62235DRYT operation?
The MODE pin on the TPS62235DRYT selects between two operating modes: pulled low (GND) enables automatic PFM/PWM transition for peak efficiency across load range; pulled high (VIN) forces continuous PWM mode for predictable switching frequency and lower output ripple - essential for EMI-sensitive or timing-critical applications.
What is the minimum input voltage required for TPS62235DRYT startup?
The TPS62235DRYT 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 1.9 V, enabling reliable operation across the full discharge curve of Li-primary and two-alkaline battery configurations.
Can the TPS62235DRYT operate with a prebiased output capacitor?
Yes, the TPS62235DRYT supports start-up into a prebiased output capacitor. Its internal soft-start circuit detects the initial bias voltage and ramps the output monotonically to 1.2 V without reverse current flow or output overshoot - a critical feature for hot-swap and power-sequencing applications in multi-rail systems.
TPS62235DRYT 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)
TPS62235DRYT FAQ
1.How can I place an order for TPS62235DRYT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62235DRYT 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 TPS62235DRYT reliable?
The price and inventory of TPS62235DRYT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62235DRYT is usually 5 days.
3.What payment methods are accepted for TPS62235DRYT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62235DRYT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62235DRYT?
TPS62235DRYT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62235DRYT 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 TPS62235DRYT?
For technical support, including TPS62235DRYT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62235DRYT requirements.
6.How does Aetrix verify that TPS62235DRYT is sourced from the original manufacturer or authorized distributors?
All TPS62235DRYT 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 TPS62235DRYT meets industry standards.
7.What is the process for return or replacement of TPS62235DRYT?
All TPS62235DRYT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62235DRYT, 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 TPS62235DRYT part is unused and in its original packaging.
Return procedure for TPS62235DRYT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS62235DRYT 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…
