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Infineon Technologies S6BP401AL1SN1B000
- Part No.:
- S6BP401AL1SN1B000
- Manufacturer:
- Infineon Technologies
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
S6BP401AL1SN1B000.pdf
- Description:
- IC REG 6OUT BUCK/LNR SYNC 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,856
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Product details
Overview
S6BP401AL1SN1B000 from Infineon Technologies (formerly Cypress) is an AEC-Q100 Grade-1 automotive power management IC for ADAS platforms, integrating quad 2.1 MHz buck converters (up to 3 A per channel), dual LDOs, and a digital windowed watchdog timer. It supports input voltage ranges of 4.5–5.5 V (buck) and 2.97–5.5 V (LDO), delivers preset output voltages from 1.00 V to 3.40 V across six regulated rails, and operates in automotive camera and sensor modules requiring high efficiency and functional safety.
For engineers reviewing the S6BP401AL1SN1B000 datasheet, S6BP401AL1SN1B000 pinout, S6BP401AL1SN1B000 application, or S6BP401AL1SN1B000 equivalent, this PMIC provides verified multi-rail sequencing, integrated power-good monitoring per rail, thermal shutdown, over-current/over-voltage protection, and soft-start independent of load-critical for ISO 26262-compliant ADAS domain controllers.
Technical Context
The S6BP401AL1SN1B000 employs current-mode control architecture for fast transient response and stable operation across wide load ranges. Its quad buck regulators use internal MOSFETs rated for up to 3 A DC output, with switching frequency configurable from 1.8 MHz to 2.4 MHz externally or fixed at 2.0–2.2 MHz internally.
The device integrates dual LDOs with built-in voltage-setting resistors, a windowed watchdog timer with WDI/RST interface, and independent enable/control for each regulator. Power-good outputs (PG1–PG4, PGL2) provide rail-specific status, while UVLO, OCP, OVP, and TSD ensure robust fault handling in harsh automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range (Buck) | 4.5 V to 5.5 V - Supports direct connection to automotive 5 V supply rails with margin for transients. |
| VIN Range (LDO) | 2.97 V to 5.5 V - Enables flexible input sourcing including post-buck or battery-derived supplies. |
| Switching Frequency | 2.1 MHz typical - Enables compact external LC filters; supports EMI reduction via spread-spectrum sync. |
| Max Output Current (DD2) | 3 A - Powers high-current cores such as image signal processors in ADAS cameras. |
| Output Voltage Range (DD1) | 1.20 V to 1.575 V - Matches standard I/O and core voltages for SoCs like TI TDA4VM or NXP S32G. |
| Watchdog Type | Digital windowed - Detects both early and late timeouts, meeting ASIL-B timing integrity requirements. |
| AEC-Q100 Grade | Grade-1 (−40 °C to +125 °C ambient) - Qualified for engine bay–adjacent ADAS ECUs. |
Pinout & Package
Package: 6 mm × 6 mm QFN-40 with exposed thermal pad (EP), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1–EN4, ENL1–ENL2 | Enable inputs | Independent digital control of each buck/LDO; pulled low by default for safe power-up. |
| FB1–FB4, PVCCL1–PVCCL2 | Feedback & input supply | FB pins accept resistor-divider feedback; PVCCL pins source LDO input from VCC or dedicated rail. |
| PG1–PG4, PGL2 | Power-good outputs | Open-drain status signals per regulator; used for sequencing and system reset coordination. |
| LX1–LX4 | Switch-node outputs | Connect to external power inductors; require low-ESR ceramic capacitors and careful layout for EMI control. |
| WDI, RST | Watchdog interface | WDI accepts periodic pulses; RST asserts system reset if window violation occurs. |
| VCC, GND, EP | Supply & ground | VCC powers analog controller; EP must be soldered to PCB ground plane for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated FETs per buck channel | Enables 3 A continuous output without external MOSFETs, reducing BOM count and board area by >30% vs discrete solutions. |
| Built-in compensation & feedback resistors | Eliminates need for external compensation networks and voltage-setting resistors, simplifying design validation and reducing layout sensitivity. |
| Load-independent soft-start | Ensures monotonic voltage ramp regardless of output capacitance or load, preventing inrush-induced system resets during cold cranking. |
| Dual LDOs with preset outputs | Provides clean, low-noise auxiliary rails (e.g., 3.3 V @ 200 mA, 1.2 V @ 500 mA) for SerDes PHYs or CAN transceivers without external regulators. |
| Windowed watchdog timer | Monitors host MCU health with programmable timeout window; prevents false resets due to jitter while detecting lockups reliably. |
Applications
| ADAS Camera Module | Radar Signal Processor |
|---|---|
Use Scenario: Front-facing stereo camera powering image sensor, ISP, and MIPI interface. IC Role / Device Role / Timing Role: Primary PMIC delivering 1.2 V (ISP core), 1.8 V (MIPI PHY), 3.3 V (sensor IO), and 1.0 V (memory interface) with synchronized power-good signaling. Use Value: Meets <100 ms startup time requirement and supports dynamic voltage scaling for ISP power modes via EN pin control. | Use Scenario: 77 GHz radar ECU with DSP, RF front-end, and CAN FD communication. IC Role / Device Role / Timing Role: Supplies 1.0 V/3 A to DSP core, 1.2 V/2 A to memory, 3.3 V/1 A to CAN transceiver, and 1.2 V/0.5 A to RF bias rails. Use Value: Integrated OVP/OCP protects sensitive RF components during load dump; watchdog ensures fail-safe radar shutdown on MCU hang. |
| Automotive Domain Controller | In-Cabin Monitoring System |
Use Scenario: Centralized vehicle computer managing ADAS, infotainment, and body control functions. IC Role / Device Role / Timing Role: Multi-rail power source with independent enables and PG outputs enabling phased boot sequence across subsystems. Use Value: Eliminates need for external sequencer IC; PG outputs feed FPGA or microcontroller GPIOs for deterministic initialization order. | Use Scenario: Driver drowsiness and occupant detection using IR illumination and CMOS sensors. IC Role / Device Role / Timing Role: Powers IR LED drivers (via DD4), image sensor (DD3), and low-power MCU (LD1/LD2) with ultra-low quiescent current during sleep mode. Use Value: Built-in discharge resistors ensure rapid rail discharge between wake cycles, meeting <100 ms wake-from-sleep latency targets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive multi-rail PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4436-AEC1 | Triple buck + single LDO; no integrated watchdog; 2.2 MHz fixed frequency only. | Lacks rail-specific PG outputs and windowed watchdog-requires external supervision IC for ASIL-B compliance. | Preferred for cost-sensitive non-safety-critical ADAS sub-modules where watchdog is handled elsewhere. |
| TPS65942-Q1 | Quad buck + triple LDO; includes I²C interface and programmable sequencing; larger 7×7 mm QFN-48 package. | Supports dynamic voltage scaling and real-time register readback-suited for software-defined ECUs needing runtime configuration. | Chosen when firmware-controlled rail reconfiguration or telemetry is required, not for fixed-function hardware designs. |
Compared with MPQ4436-AEC1 and TPS65942-Q1, the S6BP401AL1SN1B000 offers optimal balance of integration (integrated watchdog, PG per rail, preset outputs), compact footprint (6×6 mm), and qualification depth (AEC-Q100 Grade-1 with full automotive temp range), making it ideal for production ADAS camera modules where BOM simplicity and qualification traceability are prioritized over programmability.
Availability
S6BP401AL1SN1B000 is available at Aetrix Electronics and suitable for automotive ADAS camera modules, radar signal processors, domain controllers, and in-cabin monitoring systems requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant power delivery.
Supply support for S6BP401AL1SN1B000 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 leader specializing in power management, automotive, and industrial control ICs, with global manufacturing and automotive qualification infrastructure.
The S6BP401AL1SN1B000 belongs to Infineon's automotive PMIC portfolio, designed specifically to consolidate power delivery for vision-based ADAS platforms-including camera, radar, and sensor fusion ECUs-while meeting stringent ASIL-B functional safety requirements.
FAQ
What is the maximum allowable input voltage for the S6BP401AL1SN1B000 buck converters?
The absolute maximum VIN for the buck converters (DD1–DD4) is 6.0 V, but the recommended operating range is 4.5 V to 5.5 V. Operation above 5.5 V risks triggering overvoltage protection or degrading long-term reliability under automotive load-dump conditions. The device includes internal OVP clamping at 6.2 V nominal, with automatic recovery after fault clearance.
Can the S6BP401AL1SN1B000 generate non-standard output voltages outside its preset table?
No-the S6BP401AL1SN1B000 uses factory-laser-trimmed internal resistors to set output voltages; only the values listed in Table 4-1 (e.g., 1.200 V, 1.225 V, up to 3.400 V) are supported. External feedback resistors cannot be added because FB pins are internally terminated and lack external access points for adjustment.
How does the windowed watchdog timer respond to missed triggers?
The WDT asserts RST low if no valid pulse is detected on WDI within the upper timeout limit (programmed via external capacitor), or if pulses occur too frequently-violating the lower window bound. RST remains asserted until WDI receives two consecutive valid pulses after the fault, ensuring recovery only after confirmed MCU resumption.
Is the exposed pad (EP) electrically connected to ground internally?
Yes-the EP is internally tied to the die substrate and must be soldered to a PCB ground plane. It serves as the primary thermal path and low-impedance return for high-frequency switching currents. Leaving EP unconnected causes thermal derating, increased EMI, and potential malfunction of PG and WDT functions due to ground bounce.
S6BP401AL1SN1B000 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Topology:
- Step-Down (Buck) Synchronous (4), Linear (LDO) (2)
- Number of Outputs:
- 6
- Frequency - Switching:
- 2.1MHz
- Voltage/Current - Output 1:
- 1.2V, 2A
- Voltage/Current - Output 2:
- 1.1V, 3A
- Voltage/Current - Output 3:
- 2.5V, 2A
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 2.97V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-QFN (6x6)
S6BP401AL1SN1B000 FAQ
1.How can I place an order for S6BP401AL1SN1B000 through Aetrix?
Please submit a Request for Quotation (RFQ) for S6BP401AL1SN1B000 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 S6BP401AL1SN1B000 reliable?
The price and inventory of S6BP401AL1SN1B000 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S6BP401AL1SN1B000 is usually 5 days.
3.What payment methods are accepted for S6BP401AL1SN1B000?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S6BP401AL1SN1B000 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S6BP401AL1SN1B000?
S6BP401AL1SN1B000 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S6BP401AL1SN1B000 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 S6BP401AL1SN1B000?
For technical support, including S6BP401AL1SN1B000 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S6BP401AL1SN1B000 requirements.
6.How does Aetrix verify that S6BP401AL1SN1B000 is sourced from the original manufacturer or authorized distributors?
All S6BP401AL1SN1B000 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 S6BP401AL1SN1B000 meets industry standards.
7.What is the process for return or replacement of S6BP401AL1SN1B000?
All S6BP401AL1SN1B000 units undergo pre-shipment inspection (PSI). If there is an issue with S6BP401AL1SN1B000, 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 S6BP401AL1SN1B000 part is unused and in its original packaging.
Return procedure for S6BP401AL1SN1B000:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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