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Infineon Technologies TLS4125D0EPVXUMA1
- Part No.:
- TLS4125D0EPVXUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 14-PowerTSSOP (0.154", 3.90mm Width)
- Datasheet:
-
TLS4125D0EPVXUMA1.pdf
- Description:
- IC REG BUCK ADJ 2.5A TSDSO-14-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,393
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Product details
Overview
TLS4125D0EPVXUMA1 from Infineon Technologies is a 2.5 A, 2.8 MHz synchronous step-down DC-DC regulator for automotive power systems, featuring adjustable output (3.0–10.0 V), ±1.5% feedback accuracy in PWM mode, integrated high-side/low-side MOSFETs, and AEC-Q100 qualification. It operates across 3.7–35 V input, supports 100% duty cycle for cold-crank scenarios, and delivers ultra-low quiescent current (31 µA) in active PFM mode.
For engineers reviewing the TLS4125D0EPVXUMA1 datasheet, TLS4125D0EPVXUMA1 pinout, TLS4125D0EPVXUMA1 application, or TLS4125D0EPVXUMA1 equivalent, key selection criteria include its dual-frequency range (320–560 kHz / 1.6–2.8 MHz), spread-spectrum EMI reduction, active output discharge, and reset monitoring with configurable delay via RT pin.
Technical Context
This buck regulator uses peak-current-mode PWM control with automatic transition to PFM at light loads, enabling high efficiency across wide load ranges. Its integrated compensation network eliminates external loop components, while soft-start ramp generation and internal bandgap reference ensure stable startup and precise regulation.
The device implements comprehensive protection: overcurrent/overload detection on SW node, input undervoltage shutdown, thermal shutdown at Tj ≥ 150°C, and independent overvoltage/undervoltage monitoring of FB with open-drain RO reset output. Synchronization via SYNC pin and spread-spectrum enable via SSON support system-level timing and EMC compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2.5 A continuous - supports automotive ECUs requiring robust transient response under load steps. |
| Input Voltage Range | 3.7 V to 35 V - accommodates 12 V battery systems including cranking dips down to ~6 V and load-dump transients up to 42 V. |
| Switching Frequency | 1.6 MHz to 2.8 MHz (default) or 320–560 kHz - enables compact magnetics selection and noise avoidance in sensitive ADAS bands. |
| Feedback Accuracy | ±1.5% in PWM mode - ensures tight output voltage regulation across temperature and line/load variations. |
| Quiescent Current | 31 µA in PFM mode - extends battery life in always-on vehicle modules such as telematics and body controllers. |
| Thermal Range | Tj = −40°C to +150°C - qualified per AEC-Q100 Grade 0 for under-hood and infotainment applications. |
| Reset Monitoring | Configurable UV/OV threshold via RT resistor - provides system-level power-good signaling with programmable delay before assertion. |
Pinout & Package
Delivered in PG-TSDSO-14 exposed-pad package with thermal pad soldered to PCB ground plane for enhanced heat dissipation in high-power-density automotive layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FREQ | Frequency selection input | Resistor-to-GND sets low/high frequency range; open defaults to 2.8 MHz operation. |
| SYNC | External clock synchronization input | Accepts 320 kHz–3 MHz CMOS clock to align switching edges with system timing domains. |
| RO | Open-drain reset output | Asserts low when FB falls below UV threshold or exceeds OV threshold; requires external pull-up. |
| AGND | Analog ground reference | Separate low-noise ground return for feedback and control circuitry to minimize noise coupling. |
| EN | Enable input with internal pull-down | Logic-high (>2 V) enables regulator; logic-low disables with <1 µA shutdown current. |
| VS | Main supply input (pins 6+7) | Dual-pin configuration reduces IR drop and improves current handling for 35 V max input. |
| PGND | Power ground (pins 8+9) | Dual low-inductance GND connections minimize switching loop area and EMI radiation. |
| SW | Switch node (pins 10+11) | High-current path to external inductor; dual pins reduce resistance and thermal stress. |
| SSON | Spread-spectrum enable | Active-high signal activates frequency dithering to reduce peak EMI emissions by >10 dB. |
| RT | Reset timing configuration | Resistor-to-GND sets reset delay time and undervoltage threshold hysteresis. |
| FB | Feedback voltage input | Monitors output via resistive divider; internal 0.8 V reference enables 3.0–10.0 V adjustment range. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stages | High-side and low-side MOSFETs co-integrated with drivers eliminate external FETs and gate drivers, reducing BOM count and layout complexity. |
| 100% Duty Cycle Operation | Enables dropout-free regulation during battery cranking events where input drops near output voltage - critical for ADAS camera modules. |
| Active Output Discharge | Internal NMOS discharges output capacitor when disabled, preventing floating voltages and ensuring safe power sequencing in multi-rail systems. |
| Programmable Reset Function | RT pin allows precise tuning of reset delay (1–200 ms) and UV threshold (0.72–0.88 V at FB), supporting custom power-good timing requirements. |
| Thermal Protection | Integrated junction temperature sensor triggers shutdown at 150°C and auto-restarts after cooldown, preventing permanent damage in sealed enclosures. |
Applications
| ADAS Camera Power Supply | Infotainment System Core Rail |
|---|---|
Use Scenario: Powers image sensor and ISP in forward-facing ADAS cameras operating in engine bay environments with wide temperature and input voltage variation. IC Role / Device Role / Timing Role: Primary 5 V or 3.3 V buck regulator delivering clean, regulated power with fast transient response to handle burst-mode sensor readouts. Use Value: 100% duty cycle maintains regulation during 6 V cranking dips; ±1.5% FB accuracy ensures consistent sensor biasing and ADC reference stability. | Use Scenario: Supplies core logic voltage (e.g., 3.3 V) to SoC, display controller, and audio codec in automotive head units with always-on connectivity. IC Role / Device Role / Timing Role: High-efficiency intermediate power stage converting 12 V battery to low-voltage rail, synchronized to system clock to avoid beat frequencies. Use Value: 31 µA PFM quiescent current minimizes standby drain; spread-spectrum mode suppresses EMI in RF-sensitive infotainment bands. |
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
Use Scenario: Provides regulated 5 V rail for microcontroller, CAN transceivers, and door/window motor drivers in centralized BCMs. IC Role / Device Role / Timing Role: Main system regulator with reset monitoring to ensure MCU boot integrity after battery reconnection or brown-out recovery. Use Value: RO reset output signals MCU upon valid VOUT; RT-programmable delay avoids false resets during input transients. | Use Scenario: Powers LTE/V2X modem, GNSS receiver, and secure element in cellular-connected TCUs requiring long-term reliability and low sleep current. IC Role / Device Role / Timing Role: Always-on buck converter with ultra-low shutdown current (<1 µA) and AEC-Q100 qualification for 15-year vehicle lifecycle. Use Value: Integrated thermal shutdown and overcurrent protection prevent field failures in thermally constrained TCU enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4420AGL-A-Z | 2.5 A, 36 V input, fixed 500 kHz fSW, no spread spectrum or reset output | Lacks RO reset signaling and programmable UVLO; suitable only where system-level monitoring exists | Select when cost sensitivity outweighs need for integrated reset and EMI control |
| TPS54560QDGQRQ1 | 5 A, 60 V input, adjustable fSW (100–2500 kHz), no integrated power FETs | Requires external high-side/low-side MOSFETs; higher board area and design effort | Select when higher output current or wider input range is required beyond TLS4125D0EPVXUMA1 capability |
Compared with MPQ4420AGL-A-Z and TPS54560QDGQRQ1, TLS4125D0EPVXUMA1 offers superior integration (MOSFETs + reset + spread spectrum), tighter FB accuracy, and automotive-grade thermal/EMI performance - making it optimal for space-constrained, safety-aware ADAS and infotainment rails.
Availability
TLS4125D0EPVXUMA1 is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment head units, body control modules, and telematics control units requiring stable component supply, AEC-Q100 compliance, and long-lifecycle support.
Supply support for TLS4125D0EPVXUMA1 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
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and security solutions, with global manufacturing and automotive qualification infrastructure.
The OPTIREG™ switcher product line delivers highly integrated, AEC-Q100-qualified DC-DC regulators targeting demanding automotive subsystems including ADAS, body electronics, and infotainment - emphasizing thermal robustness, EMI resilience, and functional safety readiness.
FAQ
What is the purpose of the RT pin on TLS4125D0EPVXUMA1?
The RT pin configures both the reset delay time and the undervoltage reset threshold by connecting an external resistor to GND. A 100 kΩ resistor yields ~100 ms delay and 0.8 V FB threshold; values from 10 kΩ to 1 MΩ adjust timing and hysteresis linearly. Leaving RT unconnected disables reset functionality.
Can TLS4125D0EPVXUMA1 operate with input voltage below 3.7 V?
No - the absolute minimum input voltage is 3.7 V for normal operation. Below this, the internal UVLO circuit disables the regulator to protect against unstable regulation. During cranking, the device sustains regulation down to ~6 V input but cannot start up or function reliably below 3.7 V.
How does spread-spectrum mode improve EMI performance?
When SSON is high, the internal oscillator modulates switching frequency by ±12% around the nominal value (e.g., 2.8 MHz ±336 kHz), spreading energy across a wider bandwidth and reducing peak radiated emissions by up to 12 dB - verified per CISPR 25 Class 5 testing in typical automotive layouts.
Is the exposed thermal pad electrically connected internally?
Yes - the exposed pad is internally connected to PGND and must be soldered to a large PCB copper pour tied to power ground. This connection provides both thermal conduction (RθJA ≈ 42°C/W) and low-inductance grounding for high-frequency switching currents, directly impacting efficiency and EMI.
TLS4125D0EPVXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- 14-PowerTSSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.7V
- Voltage - Input (Max):
- 35V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- 10V
- Current - Output:
- 2.5A
- Frequency - Switching:
- 2.8MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TSDSO-14-5
TLS4125D0EPVXUMA1 FAQ
1.How can I place an order for TLS4125D0EPVXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLS4125D0EPVXUMA1 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 TLS4125D0EPVXUMA1 reliable?
The price and inventory of TLS4125D0EPVXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLS4125D0EPVXUMA1 is usually 5 days.
3.What payment methods are accepted for TLS4125D0EPVXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLS4125D0EPVXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLS4125D0EPVXUMA1?
TLS4125D0EPVXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLS4125D0EPVXUMA1 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 TLS4125D0EPVXUMA1?
For technical support, including TLS4125D0EPVXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLS4125D0EPVXUMA1 requirements.
6.How does Aetrix verify that TLS4125D0EPVXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLS4125D0EPVXUMA1 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 TLS4125D0EPVXUMA1 meets industry standards.
7.What is the process for return or replacement of TLS4125D0EPVXUMA1?
All TLS4125D0EPVXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLS4125D0EPVXUMA1, 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 TLS4125D0EPVXUMA1 part is unused and in its original packaging.
Return procedure for TLS4125D0EPVXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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