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TLF35584QVVS2XUMA2 is an active Infineon OPTIREG™ automotive functional-safety power-management IC. The QVVS2 configuration is associated with 3.3 V MCU and standby rails, uses a PG-VQFN-48 exposed-pad package, and combines a buck-boost pre-regulator, linear post-regulators, trackers, monitoring, watchdogs, reset and safe-state controls. It is a multi-rail safety PMIC—not a single-output 3.3 V regulator.
What is TLF35584QVVS2XUMA2?
Infineon positions this orderable part in the TLF35584 family for automotive microcontrollers and peripherals, including AURIX™ TC2x/TC3x and TRAVEO™ T1G systems. The official product page is Infineon’s TLF35584QVVS2 page; use its current linked datasheet and collateral for design values.
The device’s architecture starts with a wide-input switching pre-regulator, followed by linear regulators and tracker outputs. It also supervises those supplies and communicates diagnostics through a 16-bit SPI interface.
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| Parameter | TLF35584QVVS2XUMA2 information |
|---|---|
| Input operating range | 3 V to 40 V, subject to the applicable datasheet’s transient and absolute-maximum limits |
| Voltage configuration | QVVS2 is the 3.3 V-associated variant; not every output is necessarily 3.3 V |
| Regulator/function current listings | Infineon lists 200 mA, 600 mA, 150 mA, 10 mA and 1,300 mA figures for different internal paths |
| Quiescent-current listing | 70 µA |
| Operating temperature | −40 °C to +150 °C for the QVVS2 listing |
| Package | PG-VQFN-48; distributor descriptions include 48-VFQFN exposed pad and PG-VQFN-48-31 |
| Control and diagnostics | 16-bit SPI, functional and window watchdogs, voltage/error monitoring and reset |
| Safety positioning | Infineon identifies ISO 26262 compliance and features intended to support ASIL-D system implementation |
| Production packing | Tape and reel; Infineon lists a nominal 2,500-unit packing size |
The current figures are not additive and do not mean that every output can deliver 1.3 A. Map each value to its specific regulator or function in the electrical-characteristics tables before sizing loads.
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Internal power architecture
Pre-regulator
A buck-boost switching stage accommodates the vehicle supply range. Family material describes up to 1.3 A for this pre-regulator path; that is not a rating for every post-regulator.
Post-regulators and trackers
Linear post-regulators provide supplies for the MCU, communication circuitry and reference or sensor functions. Two tracker outputs can follow a reference rail for suitable external loads.
Standby and external domains
A standby LDO supports low-power operation, while the architecture can accommodate an external core regulator or another externally supplied domain. Check voltage tolerances, sequencing and current limits individually.
Functional-safety features
- Independent undervoltage and overvoltage monitoring.
- Functional and window watchdogs.
- Reset generation and error monitoring.
- Two safe-state controller outputs.
- Built-in self-test and SPI diagnostics.
“Supports ASIL-D” does not make an ECU automatically ASIL-D. The final safety result depends on the complete hardware and software safety concept, diagnostic coverage, assumptions of use and required Infineon safety documentation.
Package and PCB considerations
The exact OPN is a surface-mount PG-VQFN-48 with an exposed thermal pad. Obtain the official package drawing and recommended land pattern rather than relying on a generic distributor footprint. Thermal copper, pad connection, switching-loop layout and capacitor placement affect temperature and EMI. Infineon’s listing specifies moisture-sensitivity level 3 and dry packing; follow the applicable assembly and floor-life requirements.
Automotive applications
Infineon associates the family with electric power steering, EV traction inverters and drivetrains, on-board chargers, battery-management systems, DC/DC converters, chassis and safety control, domain controllers, ADAS-related systems, and engine, transmission and electric-motor control. These are target applications, not guarantees of suitability: validate load, transient, thermal, EMI and safety requirements for the actual ECU.
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Design workflow
Before schematic capture
- Confirm that the MCU and standby domains require the QVVS2 3.3 V configuration.
- Check every rail’s individual current, tolerance and sequencing requirement.
- Compare the vehicle input and transient profile with operating and absolute-maximum specifications.
- Verify communication-rail voltage, standby behavior and wake-up requirements.
- Plan SPI, watchdog, reset and safe-state connections in the system safety concept.
During schematic and layout
Follow the current reference schematic for inductor, capacitor, compensation, feedback, synchronization, enable, wake, reset, error and SPI connections. Use the package drawing for the exposed pad and thermal copper. Do not substitute component values from a catalog summary.
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Firmware bring-up
- Apply a current-limited input and verify the measured supply.
- Confirm intended inhibit, standby and wake behavior.
- Check switching-stage operation and measure each post-regulator separately.
- Verify reset release only after required rails are valid.
- Configure SPI and read status and diagnostic registers.
- Configure and service the watchdog using the applicable timing windows.
- Exercise undervoltage, overvoltage, watchdog and error responses in a controlled setup.
- Validate safe-state outputs and recovery across temperature, input and load conditions.
Variant checks and replacement decisions
Do not substitute QVVS2, QVHS2, QVVS1 or another similarly named device by name alone. Confirm the complete ordering table, voltage configuration, package, thermal grade, pinout, electrical limits and packing suffix. The QVHS2 family page, for example, reports a temperature range extending to +175 °C, which must not be copied to QVVS2. A 3.3 V family association also does not prove that all outputs share that voltage.
The XUMA2 suffix is part of the exact Infineon orderable number. Confirm its meaning in the current ordering-information table rather than decoding each character from distributor naming conventions.
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When this PMIC is—and is not—a good fit
Good fit
- Several coordinated automotive rails are required.
- Supervised startup, reset, watchdog and diagnostic behavior is essential.
- The design team can implement the associated SPI and safety software.
- A 3 V-to-40 V nominal operating range and compact VQFN are appropriate.
Potentially poor fit
- The product needs only one inexpensive, non-safety-critical 3.3 V rail.
- Individual regulator currents are too low for the loads.
- A different package, temperature grade, switching profile or EMI strategy is required.
- The project cannot obtain or apply the safety collateral and validation process.
Where to obtain documentation
Start with the official Infineon product page and download the current datasheet, family overview, package information, evaluation-board or reference-design files, software resources and applicable safety manual or analysis documents. Older PDFs may describe earlier revisions. If safety collateral is restricted or unavailable, contact Infineon technical assistance or sales.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Buying and availability
Commercial data changes by region, date and quantity. DigiKey’s listing is here; observed catalog data included active status, 3–40 V input, cut-tape pricing from $6.89 for one, a possible $7.00 Digi-Reel fee and periods with no immediate stock. Treat those figures as time-stamped snapshots.
Mouser’s buck-boost search page is here. One observed result showed $8.60 each, quantity prices near $5.86 at 10, $4.37 at 100 and $3.75 at 2,500, while stock reports varied between crawls. Verify the live regional listing.
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For production quotations, check Future Electronics, Avnet and other authorized channels. Confirm traceability, date code, packaging, authenticity and automotive-quality documentation. Distributor taxonomy such as “one output” is catalog classification, not a complete description of this multi-function IC.
Bottom-line selection test
Choose TLF35584QVVS2XUMA2 when a 3.3 V-oriented, multi-rail automotive supply must also supervise power-up, diagnostics and safe-state behavior. Approve it only after matching every rail and transient requirement to the current datasheet and completing system-level safety, thermal, firmware and EMC validation; a cheaper buck converter or another TLF35584 variant is not automatically equivalent.
Frequently Asked Questions
Is TLF35584QVVS2XUMA2 a 3.3 V regulator?
It is the family’s 3.3 V-associated QVVS2 configuration, but it contains multiple regulators and trackers whose individual voltages must be checked.
Is the 1.3 A rating available on every output?
No. The listed 1.3 A, 600 mA, 200 mA, 150 mA and 10 mA values apply to different internal paths or functions.
Can it replace TLF35584QVHS2?
Not without checking the ordering table, pinout, voltage, package, temperature grade, electrical limits and safety requirements.
Does it automatically make an ECU ASIL-D?
No. It provides safety features intended to support an ASIL-D system; the ECU requires its own complete safety analysis and validation.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
