TLF35584QKVS2XUMA2 - ASIL-D PMIC for ADAS | Infineon
MPN: TLF35584QKVS2XUMA2 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.45 | $9.45 |
| 10 | $8.62 | $86.20 |
| 100 | $7.74 | $774.00 |
| 500 | $6.95 | $3,475.00 |
| 1,000 | $6.21 | $6,210.00 |
TLF35584QKVS2XUMA2 Overview
Drop-in alternatives for TLF35584QKVS2XUMA2 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TLF35584QVVS2XUMA2
β Drop-Inπ Reference alternative (not in catalog)
TLF35584QKVS1XUMA2
β Drop-Inπ Reference alternative (not in catalog)
TLF35584QKVS2XUMA2 Maximum Ratings & Electrical Characteristics
| Product Type | Multi-output safety PMIC |
| Functional Safety Level | ISO 26262 ASIL-D (system) |
| AEC-Q100 Qualification | Grade 1 (-40C to +125C ambient) |
| Input Voltage Range | 3 V to 40 V (transient) |
| Main Output Voltage | 3.3 V (microcontroller) |
| Sensor Supply Outputs | 2 independent (adjustable) |
| Pre-regulator Topology | Synchronous buck (pre-/post-regulator concept) |
| Post-regulator | LDO per sensor output |
| Watchdog | Window + functional watchdog (configurable) |
| Communication Interface | SPI (16-bit) |
| Fault Outputs | ROT (Reset Output) and INT |
| Protection Functions | OV, UV, OT, short-to-ground, short-to-battery |
| Operating Temperature Range | -40C to +150C (Tj) |
| Package | PG-LQFP-64-18 (LQFP-64 with exposed pad) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
TLF35584QKVS2XUMA2 Pin Configuration
| Pin 1 | VSUP β Battery supply input (3V to 40V) |
| Pin 2 | VSUP β Battery supply input (3V to 40V) |
| Pin 3 | GND β Ground |
| Pin 4 | BST β Bootstrap for buck switch |
| Pin 5 | SW β Buck switching node |
| Pin 6 | SW β Buck switching node |
| Pin 7 | PGND β Power ground |
| Pin 8 | VCC3V3 β Main 3.3V output |
| Pin 9 | VCC3V3 β Main 3.3V output |
| Pin 10 | VCC5V β Internal 5V LDO |
| Pin 11 | VCORE β Core supply for internal logic |
| Pin 12 | VSEN1 β Sensor supply 1 output |
| Pin 13 | VSEN1FB β Sensor supply 1 feedback |
| Pin 14 | VSEN2 β Sensor supply 2 output |
| Pin 15 | VSEN2FB β Sensor supply 2 feedback |
| Pin 16 | VSEN3 β Sensor supply 3 / tracker |
| Pin 17 | VSEN3FB β Sensor supply 3 feedback |
| Pin 18 | ROT β Reset Output (active low) |
| Pin 19 | INT β Interrupt output |
| Pin 20 | WDI β Watchdog input from MCU |
| Pin 21 | WD_RST β Watchdog reset input |
| Pin 22 | WK β Wake input |
| Pin 23 | EN β Enable input |
| Pin 24 | SD β Shutdown input |
| Pin 25 | SCS β SPI chip select (active low) |
| Pin 26 | SCLK β SPI clock |
| Pin 27 | SDI β SPI data input |
| Pin 28 | SDO β SPI data output |
| Pin 29 | GPIO1 β General purpose IO |
| Pin 30 | GPIO2 β General purpose IO |
| Pin 31 | TEST β Test mode (tie to GND in production) |
| Pin 32 | NC β Not connected (per datasheet) |
| Pin 33 | NC β Not connected (per datasheet) |
| Pin 34 | NC β Not connected (per datasheet) |
| Pin 35 | VSUP_SENSE β VSUP voltage sense |
| Pin 36 | TEMP β Temperature sensor output |
| Pin 37 | AVSS β Analog ground |
| Pin 38 | AVCC β Analog supply |
| Pin 39 | REF β Internal reference |
| Pin 40 | COMP β Buck compensation |
| Pin 41 | FB_BUCK β Buck feedback |
| Pin 42 | BOOT β Bootstrap |
| Pin 43 | NC β Not connected (per datasheet) |
| Pin 44 | NC β Not connected (per datasheet) |
| Pin 45 | NC β Not connected (per datasheet) |
| Pin 46 | NC β Not connected (per datasheet) |
| Pin 47 | NC β Not connected (per datasheet) |
| Pin 48 | NC β Not connected (per datasheet) |
| Pin 49 | NC β Not connected (per datasheet) |
| Pin 50 | NC β Not connected (per datasheet) |
| Pin 51 | NC β Not connected (per datasheet) |
| Pin 52 | NC β Not connected (per datasheet) |
| Pin 53 | NC β Not connected (per datasheet) |
| Pin 54 | NC β Not connected (per datasheet) |
| Pin 55 | NC β Not connected (per datasheet) |
| Pin 56 | NC β Not connected (per datasheet) |
| Pin 57 | NC β Not connected (per datasheet) |
| Pin 58 | NC β Not connected (per datasheet) |
| Pin 59 | NC β Not connected (per datasheet) |
| Pin 60 | NC β Not connected (per datasheet) |
| Pin 61 | NC β Not connected (per datasheet) |
| Pin 62 | NC β Not connected (per datasheet) |
| Pin 63 | NC β Not connected (per datasheet) |
| Pin 64 | NC β Not connected (per datasheet) |
Typical Applications
TLF35584QKVS2XUMA2 is suitable for 6 applications: ADAS Domain Controller, Chassis Control ECU, Electric Power Steering, Airbag and Restraint ECU, Body Control Module, Battery Management System.
ADAS Domain Controller
The TLF35584QKVS2XUMA2 is purpose-built for ADAS domain controllers requiring ASIL-D functional safety. Its integrated 3.3V main output supplies the host MCU while two independent sensor rails feed cameras and radar MMICs with low-noise power. The window and functional watchdogs validate MCU software execution at the highest integrity level. Cold-crank tolerance down to 3V ensures the ADAS controller remains alive during engine start, and the SPI interface allows dynamic reconfiguration of watchdog windows. With AEC-Q100 Grade 1 qualification and a compact LQFP-64 footprint, it is the canonical power backbone for central ADAS ECUs.
Recommended
Chassis Control ECU
Chassis modules such as electronic stability control and brake-by-wire demand ASIL-D power supervision. The TLF35584QKVS2XUMA2 supplies the chassis MCU at 3.3V while its dual sensor rails feed wheel-speed and yaw-rate sensors with isolated, low-ripple power. The integrated window watchdog enforces deterministic software service timing, critical for chassis loops operating at sub-10ms cycle times. The device's 40V load-dump tolerance protects the chassis ECU from transient events on the 12V battery bus. PG-LQFP-64-18 with exposed pad simplifies thermal dissipation in sealed underbody modules.
Recommended
Electric Power Steering
Electric power steering (EPS) systems require ASIL-D power management to ensure the steering assist remains under control during fault conditions. The TLF35584QKVS2XUMA2 provides the 3.3V logic rail for the EPS MCU plus isolated sensor supplies for torque and angle sensors, with the integrated safety mechanisms monitoring both. The ROT (Reset Output) signal triggers a safe-state shutdown of the steering controller if the watchdog is not serviced, preventing unintended steering torque. AEC-Q100 Grade 1 qualification supports underhood ambient temperatures, and the LQFP-64 exposed pad keeps junction temperature within limits during high-load EPS operation.
Recommended
Airbag and Restraint ECU
Airbag ECUs require ASIL-D power management because deployment decisions depend on a single MCU's correct operation. The TLF35584QKVS2XUMA2 supplies this MCU at 3.3V with redundant window and functional watchdog supervision that meets the highest ISO 26262 integrity level. The integrated fault output (ROT) signals the airbag squib driver to inhibit deployment during MCU malfunction, a critical safety function. The device's 3V cold-crank tolerance ensures crash sensing remains armed during engine start, and AEC-Q100 Grade 1 qualification supports the harsh thermal environment of airbag modules mounted under the dash.
Recommended
Body Control Module
Body control modules (BCMs) increasingly demand ASIL-B or ASIL-D power supervision as they integrate more safety-relevant lighting and access functions. The TLF35584QKVS2XUMA2 provides a 3.3V main rail plus two sensor supplies in a single LQFP-64 package, reducing BOM count versus discrete LDOs. The SPI-configurable window watchdog allows OEMs to tune watchdog timing per platform, and the integrated OV/UV/OT protections simplify the BCM safety case. With 40V load-dump tolerance and AEC-Q100 Grade 1, the device is well suited to centralized body controllers distributed throughout the vehicle harness.
Recommended
Battery Management System
12V and 48V battery management systems (BMS) require a robust, ASIL-D capable PMIC for the supervising MCU and cell-monitoring AFEs. The TLF35584QKVS2XUMA2 supplies the BMS MCU at 3.3V and provides two independent sensor rails for current and temperature sensing with low-noise, low-drift power. The integrated window and functional watchdogs ensure the BMS MCU executes its safety checks within deterministic timing, critical for cell-balancing decisions. The device's wide input range supports direct connection to the battery bus, and the exposed-pad LQFP-64 package simplifies thermal management in underbody-mounted BMS housings.
Recommended
Recommended Products Summary
Engineering reference data for TLF35584QKVS2XUMA2 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLF35584QVVS2XUMA2 | TLF35584QKVS1XUMA2 |
|---|---|---|---|
| Package | PG-LQFP-64-18 | PG-LQFP-64-18 - same | PG-LQFP-64-18 - same |
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Functional Safety Level | ISO 26262 ASIL-D | ISO 26262 ASIL-D | ISO 26262 ASIL-D |
| Input Voltage Range | 3V to 40V | 3V to 40V | 3V to 40V |
| Main Output Voltage | 3.3V | 3.3V | 3.3V |
| Sensor Supplies | 2 independent | 2 independent | 2 independent |
| Watchdog Type | Window + Functional | Window + Functional | Window + Functional |
| Silicon Revision | QKVS2 | QVVS2 (different default config) | QKVS1 (earlier revision) |
Key Differentiators
- ASIL-D capable with dual sensor supplies in a single IC (vs TLF35584QKVS1XUMA2)
- Integrated window + functional watchdog (vs TLF35584QVVS2XUMA2)
Design Notes
The PG-LQFP-64-18 package uses an exposed thermal pad (pin 65) that must be soldered to a copper pour of at least 1 square inch on the top layer for thermal dissipation. Estimated: at 500mA total load and VIN=12V, VOUT=3.3V, the dissipation is approximately 4.35W; without thermal relief, junction temperature can exceed 150C in a sealed module. Use multi-layer thermal vias under the pad per IPC-2152 to conduct heat to inner copper planes.
Follow Infineon's reference layout for the LQFP-64 footprint. Place input capacitors (10uF X7R minimum) within 5mm of the VSUP pins, and route the SW switching node with a 0.5mm minimum trace and a 0.8mm keepout to adjacent traces to avoid noise coupling. The bootstrap capacitor (BST to SW) must be a 100nF ceramic placed within 3mm of the BST pin. GND and PGND must be connected at a single star point under the IC exposed pad.
The TLF35584QKVS2XUMA2 ROT (Reset Output) pin must be pulled up to VCC3V3 with a 10kohm resistor; if left floating, the MCU may interpret noise as a valid reset. Do not connect the TEST pin (pin 31) to anything other than ground in production - floating TEST pins can latch the device into a test mode that disables safety functions. The SPI SDO pin requires a pull-up if multiple devices share the bus; verify CS timing meets the datasheet minimum high time before initiating a new transaction.
Compliance Information
AEC-Q100 Grade 1 qualified per Infineon datasheet. ISO 26262 ASIL-D capable. RoHS and REACH compliant per Infineon product page.
