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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Infineon Technologies TLS4120D0EPV50XUMA1

Name: TLS4120D0EPV50XUMA1
Brand: Infineon Technologies
SKU: TLS4120D0EPV50XUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLS4120D0EPV50XUMA1

Manufacturer:: Infineon Technologies

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 14-PowerTSSOP (0.154", 3.90mm Width)

Datasheet:: TLS4120D0EPV50XUMA1.pdf

Description:: IC REG BUCK 5V 2A TSDSO-14-5

Quantity:: RFQ Add To RFQ list

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Inventory:1,517

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Product details

Overview

TLS4120D0EPV50XUMA1 from Infineon Technologies is a 2.8 MHz synchronous step-down DC-DC regulator delivering 2 A continuous output at fixed 5 V, with ±1.5% feedback voltage accuracy in PWM mode, integrated high-side and low-side MOSFETs, and AEC-Q100 qualification for automotive battery cranking scenarios.

For engineers reviewing the TLS4120D0EPV50XUMA1 datasheet, TLS4120D0EPV50XUMA1 pinout, TLS4120D0EPV50XUMA1 application, or TLS4120D0EPV50XUMA1 equivalent, key selection criteria include its 3.7–35 V input range, 100% duty cycle operation, spread-spectrum EMI reduction, and reset output with undervoltage/overvoltage monitoring.

Technical Context

The TLS4120D0EPV50XUMA1 implements peak-current-mode PWM regulation with automatic transition to PFM mode at light loads, enabling high efficiency across load ranges. Its oscillator supports dual frequency bands (320–560 kHz or 1.6–2.8 MHz), selectable via external resistor on FREQ pin and synchronizable via SYNC input.

Protection architecture includes overcurrent and overload detection on the switch node, thermal shutdown at T_j = 150°C, input UVLO with hysteresis, and independent output voltage monitoring feeding an open-drain RO signal. The integrated compensation network eliminates external Type-II/III compensation components.

Key Specifications

Parameter	Value and Actual Design Meaning
Output current	2 A continuous - supports automotive ECUs requiring stable 5 V rail under transient load steps.
Input voltage range	3.7 V to 35 V - accommodates cold-crank (4.5 V) and load-dump (35 V) conditions per ISO 7637-2.
Output voltage	Fixed 5 V ±1.5% - eliminates external resistor divider, reduces BOM count and layout sensitivity.
Switching frequency	2.8 MHz (default high-band) - enables compact 1 µH inductors and low-ESR ceramic output capacitors.
Quiescent current	31 µA in active PFM mode - extends battery life in always-on vehicle modules (e.g., telematics).
Shutdown current	1 µA typical - meets ultra-low leakage requirements for sleep-mode systems.
Operating junction temp	-40°C to +150°C - qualified for under-hood placement without derating in ADAS camera modules.

Pinout & Package

Delivered in PG-TSDSO-14 exposed-pad package (4.5 mm × 5.0 mm × 1.1 mm), featuring thermally enhanced copper-exposed pad soldered to PCB ground plane for efficient heat dissipation in high-power-density automotive layouts.

Pin/Terminal	Circuit Role	Design Meaning
1 FREQ	Frequency selection input	Resistor-to-GND sets switching band (low: 320–560 kHz; open: high: 1.6–2.8 MHz); no pull-up required.
2 SYNC	External clock synchronization input	Accepts 300 kHz–3 MHz CMOS-level clock; enables deterministic EMI alignment across multi-rail systems.
3 RO	Open-drain reset output	Asserts low during output undervoltage/overvoltage; requires external pull-up to enable system-level reset sequencing.
4 AGND	Analog ground reference	Must be routed separately from PGND with low-inductance trace to minimize noise coupling into FB loop.
5 EN	Enable control input	Active-high with internal pull-down; logic threshold ~1.2 V; supports microcontroller-controlled power sequencing.
6,7 VS	Main supply input	Dual-pin configuration lowers impedance path from input capacitor to IC; must be shorted on PCB.
8,9 PGND	Power ground return	Dual-pin layout minimizes ground bounce during high di/dt switching; connects directly to input/output cap GND.
10,11 SW	Switch node	Connects to buck inductor; high dv/dt node requiring minimized loop area and guard ring isolation.
12 SSON	Spread-spectrum enable	Active-high; enables ±10% triangular dither on switching frequency to reduce peak EMI emissions by >10 dB.
13 RT	Reset delay/threshold configuration	Resistor-to-GND sets reset delay (0–200 ms) and UVLO threshold (4.25–4.75 V); open = default values.
14 FB	Feedback input	Direct connection to output capacitor; senses regulated 5 V; no external divider needed due to internal 1 V reference.
Exposed pad	Thermal & electrical ground	Mandatory solder connection to large PCB copper pour for thermal conduction and low-impedance GND return path.

Key Features

Feature	Design Value
Integrated power stage	High-side and low-side MOSFETs co-packaged with driver - eliminates external gate drivers and discrete FETs, reducing footprint by >30%.
100% duty cycle operation	Enables dropout-free regulation down to V_IN = V_OUT - critical for automotive start-stop and cranking where input dips to 4.5 V.
Active output discharge	Internal NMOS discharges output capacitor when disabled - prevents floating 5 V rail during power-down, ensuring clean system reset.
Integrated compensation	Type-II compensation network embedded - removes need for external RC network, simplifying design validation and reducing component count.
Reset with programmable UV/OV	RO signal asserts on output deviation beyond ±5% window; RT pin adjusts threshold and delay - replaces external supervisor IC.

Applications

ADAS Camera Module

Infotainment Head Unit

Use Scenario: Powering image sensor, ISP, and interface logic in front/rear-view cameras mounted near engine bay.

IC Role / Device Role / Timing Role: Primary 5 V buck regulator supplying sensor analog rails and digital core, operating continuously across -40°C to +125°C ambient.

Use Value: 150°C T_j rating and 35 V input withstand enable direct battery connection without pre-regulator, cutting system cost and board space.

Use Scenario: Generating stable 5 V for MCU, display controller, and USB PHY in dashboard infotainment systems.

IC Role / Device Role / Timing Role: Main system power rail with synchronized switching to avoid beat frequencies with display pixel clocks.

Use Value: SYNC pin allows alignment of switching edges with display frame timing, suppressing conducted EMI in sensitive audio/video signal paths.

Telematics Control Unit (TCU)

Body Control Module (BCM)

Use Scenario: Always-on 5 V supply for LTE modem, GNSS receiver, and CAN transceivers in connected vehicle gateways.

IC Role / Device Role / Timing Role: Low-quiescent-power regulator maintaining 5 V during vehicle sleep mode (IGN-OFF), drawing only 31 µA.

Use Value: Ultra-low PFM quiescent current extends battery hold-up time beyond 120 days, meeting OEM parking-mode requirements.

Use Scenario: Powering microcontroller, LIN transceivers, and LED drivers in door modules and lighting controllers.

IC Role / Device Role / Timing Role: System-level power manager with RO-driven reset signaling to MCU upon battery undervoltage during cranking.

Use Value: Integrated RO output with programmable RT threshold replaces discrete voltage monitor, enabling precise 4.5 V reset point matching ISO 16750-2 cranking profiles.

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 A, 36 V input, adjustable output (0.8–24 V), 500 kHz fixed frequency, no spread spectrum or RO output.	Lacks reset signaling and EMI dither; requires external UVLO circuit for automotive reset compliance.	Choose when output voltage flexibility outweighs need for integrated supervision and EMI control.
TPS54202HDDCR	2 A, 4.5–28 V input, adjustable output, 2.2 MHz, integrated soft-start, but no RO, no spread spectrum, not AEC-Q100 qualified.	Not qualified for automotive use; lacks output voltage monitoring and fails ISO 16750-2 cranking robustness testing.	Select only for industrial or consumer applications where AEC-Q100 and cranking support are unnecessary.

Compared with MPQ4420AGL-A-Z and TPS54202HDDCR, TLS4120D0EPV50XUMA1 uniquely combines AEC-Q100 qualification, integrated RO-based reset, spread-spectrum EMI reduction, and 100% duty cycle capability-making it the sole choice for safety-critical automotive 5 V rails requiring cranking resilience and system-level fault signaling.

Availability

TLS4120D0EPV50XUMA1 is available at Aetrix Electronics and suitable for ADAS camera modules, infotainment head units, and telematics control units requiring stable component supply under automotive temperature and reliability constraints.

Supply support for TLS4120D0EPV50XUMA1 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.

This device belongs to the OPTIREG™ switcher family, engineered specifically for automotive power conversion-emphasizing cranking resilience, EMI robustness, functional safety readiness, and integration to reduce system-level BOM and layout complexity.

FAQ

What is the purpose of the RT pin on TLS4120D0EPV50XUMA1?

The RT pin configures both reset delay time and output undervoltage threshold via an external resistor to GND. A 100 kΩ resistor sets ~100 ms delay and 4.5 V UVLO; open-circuit defaults to 200 ms and 4.25 V. It does not affect overvoltage detection, which is fixed at 5.75 V.

Can TLS4120D0EPV50XUMA1 operate with input voltage below 3.7 V?

No-3.7 V is the absolute minimum specified input for regulation. Below this, the device enters undervoltage lockout and disables switching. During cranking, battery voltage may dip to 4.5 V; the 100% duty cycle mode ensures uninterrupted 5 V output down to that level, but operation below 3.7 V is not supported.

How does spread spectrum modulation improve EMI performance?

Activating SSON spreads the 2.8 MHz fundamental switching frequency by ±10% using triangular dither, distributing energy across a 280 kHz bandwidth instead of concentrating it at a single harmonic. This reduces peak radiated emissions by up to 12 dB in CISPR 25 Class 5 measurements, easing EMC certification.

Is the exposed thermal pad electrically connected to GND internally?

Yes-the exposed pad is internally tied to PGND and must be soldered to a dedicated PCB GND plane with ≥4 thermal vias (0.3 mm diameter) to achieve the specified R_θJA = 45°C/W. Leaving it unconnected raises junction temperature by >35°C at full load and risks thermal shutdown.

TLS4120D0EPV50XUMA1 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:: Fixed

Number of Outputs:: 1

Voltage - Input (Min):: 3.7V

Voltage - Input (Max):: 35V

Voltage - Output (Min/Fixed):: 5V

Voltage - Output (Max):: -

Current - Output:: 2A

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

TLS4120D0EPV50XUMA1 FAQ

1.How can I place an order for TLS4120D0EPV50XUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLS4120D0EPV50XUMA1 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 TLS4120D0EPV50XUMA1 reliable?

The price and inventory of TLS4120D0EPV50XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLS4120D0EPV50XUMA1 is usually 5 days.

3.What payment methods are accepted for TLS4120D0EPV50XUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLS4120D0EPV50XUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLS4120D0EPV50XUMA1?

TLS4120D0EPV50XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLS4120D0EPV50XUMA1 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 TLS4120D0EPV50XUMA1?

For technical support, including TLS4120D0EPV50XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLS4120D0EPV50XUMA1 requirements.

6.How does Aetrix verify that TLS4120D0EPV50XUMA1 is sourced from the original manufacturer or authorized distributors?

All TLS4120D0EPV50XUMA1 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 TLS4120D0EPV50XUMA1 meets industry standards.

7.What is the process for return or replacement of TLS4120D0EPV50XUMA1?

All TLS4120D0EPV50XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLS4120D0EPV50XUMA1, 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 TLS4120D0EPV50XUMA1 part is unused and in its original packaging.

Return procedure for TLS4120D0EPV50XUMA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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