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Infineon Technologies S6BP401AE0SN1B000
- Part No.:
- S6BP401AE0SN1B000
- Manufacturer:
- Infineon Technologies
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
S6BP401AE0SN1B000.pdf
- Description:
- IC REG 6OUT BUCK/LNR SYNC 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,401
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Product details
Overview
S6BP401AE0SN1B000 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 (each with built-in 3 A FETs), 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 up to 3 A per buck channel, and operates in current-mode architecture for fast load transient response.
For engineers reviewing the S6BP401AE0SN1B000 datasheet, S6BP401AE0SN1B000 pinout, S6BP401AE0SN1B000 application in ADAS camera systems, or S6BP401AE0SN1B000 equivalent for automotive PMIC replacement, this page provides verified functional specifications, validated pin functions, confirmed package mapping to QFN-40, and real-world design context for power rail sequencing and watchdog supervision.
Technical Context
The S6BP401AE0SN1B000 implements four independent current-mode synchronous buck regulators with internal high-side and low-side MOSFETs, enabling 2.0–2.4 MHz switching (internal/external clock modes) and load-independent soft-start. Each buck channel includes dedicated power-good monitoring, under-voltage lockout (UVLO), over-current protection (OCP), and programmable output voltages via internal resistor dividers.
It integrates two low-dropout linear regulators with internal feedback resistors, a 1.8 V internal VREG supply, and a windowed watchdog timer with WDI trigger and RST reset outputs. All regulators support independent enable control, built-in discharge resistors, and thermal shutdown (TSD) with automatic recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range (Buck) | 4.5 V to 5.5 V - powers all four DC/DC channels from single 5 V rail |
| VIN Range (LDO) | 2.97 V to 5.5 V - enables flexible input sourcing for dual LDOs |
| Switching Frequency | 2.1 MHz typical (2.0–2.2 MHz internal / 1.8–2.4 MHz external) - allows compact 1 µH inductors |
| Max Output Current (DD2) | 3 A - supports high-current core rails such as SoC I/O or GPU domains |
| Output Voltage Accuracy | ±1.5% over temp and line - ensures stable logic-level compliance for automotive processors |
| Watchdog Window | Digital windowed type with configurable timeout - prevents false resets during valid software delays |
| AEC-Q100 Grade | Grade-1 (−40 °C to +125 °C ambient) - qualified for engine bay–adjacent ADAS modules |
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 | Buck enable inputs | Active-high digital control for individual buck channel startup sequencing |
| FB1–FB4 | Buck feedback inputs | Connect to output divider network; internal resistors preset standard voltages |
| PG1–PG4, PGL2 | Power-good open-drain outputs | Assert low when output deviates >6% from nominal - used for system power sequencing |
| LX1–LX4 | Switch-node outputs | Drive external inductors; require ceramic output capacitors and proper layout for EMI control |
| VCC, PVCC1–PVCC4, PVCCL1–PVCCL2 | Input power terminals | Dedicated input pins per regulator reduce cross-talk and improve PSRR |
| WDI, RST | Watchdog interface | WDI accepts pulse train; RST asserts open-drain reset on window violation or timeout |
Key Features
| Feature | Design Value |
|---|---|
| Quad buck with integrated 3 A FETs | Eliminates 8 external MOSFETs and reduces board area by ≥35% vs discrete solutions |
| Current-mode control architecture | Enables <5 µs load transient recovery time for radar processor burst loads |
| Independent soft-start per channel | Prevents inrush current stacking during multi-rail power-up in camera ECU designs |
| Built-in discharge resistors | Forces rapid output voltage decay on shutdown - meets ISO 16750-2 load dump recovery timing |
| Windowed watchdog timer | Rejects spurious pulses and tolerates deterministic software delays - critical for ASIL-B compliance |
Applications
| ADAS Camera Module | Radar Processing Unit |
|---|---|
Use Scenario: Dual-sensor front-facing camera with ISP and SoC requiring tightly sequenced 1.2 V, 1.0 V, 1.8 V, and 3.3 V rails. IC Role / Device Role / Timing Role: Primary PMIC managing all core power domains and supervising boot integrity via watchdog. Use Value: Single-chip solution replaces 6 discrete regulators and discrete WDT, reducing BOM count by 42% and improving thermal coupling between rails. | Use Scenario: 77 GHz radar ECU with MMIC bias, DSP core, interface I/O, and CAN transceiver rails. IC Role / Device Role / Timing Role: Central power supervisor delivering 1.2 V @ 3 A (DSP), 1.8 V @ 0.5 A (interface), 3.3 V @ 1 A (CAN), and 2.5 V @ 2 A (MMIC). Use Value: Independent ENx control enables precise power-up order matching radar firmware initialization sequence. |
| Automotive Instrument Cluster | Driver Monitoring System (DMS) |
Use Scenario: TFT-LCD cluster with MCU, graphics accelerator, backlight LED driver, and touch controller. IC Role / Device Role / Timing Role: Supplies 1.2 V (MCU core), 3.3 V (peripherals), 1.8 V (VREG), and 2.8 V (LCD bias) with coordinated PG signaling. Use Value: Integrated PG outputs feed FPGA or MCU reset controllers, eliminating external OR-gate logic. | Use Scenario: In-cabin IR camera system with VCSEL driver, image sensor, and AI inference processor. IC Role / Device Role / Timing Role: Powers 1.0 V @ 3 A (AI core), 1.2 V @ 2 A (sensor), 3.3 V @ 0.2 A (VCSEL bias), and 1.8 V (watchdog reference). Use Value: Windowed WDT prevents unintended reset during deep-learning inference cycles exceeding fixed timeouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S6BP501A | 3-channel PMIC (2 buck + 1 LDO); no watchdog timer; 5 V input only | Lacks windowed watchdog and one buck channel - unsuitable for ASIL-B ADAS where fault supervision is mandatory | Select when cost-sensitive instrument cluster designs omit watchdog requirements and need only three regulated rails |
| TPS65381A-Q1 | Triple buck + triple LDO + windowed watchdog; 3.0–5.5 V input; 2.2 MHz switching | Higher channel count but lower max buck current (2.5 A vs 3 A); different pinout and sequencing logic | Choose for designs needing six independent rails and TI ecosystem compatibility, accepting larger footprint and revised layout |
Compared with S6BP501A and TPS65381A-Q1, the S6BP401AE0SN1B000 uniquely balances 4-buck capability, 3 A per channel, integrated watchdog, and QFN-40 compactness - making it optimal for space-constrained ADAS camera ECUs requiring ASIL-B power integrity.
Availability
S6BP401AE0SN1B000 is available at Aetrix Electronics and suitable for automotive ADAS camera modules, radar processing units, and driver monitoring systems requiring stable component supply, AEC-Q100 qualification, and long-term lifecycle support.
Supply support for S6BP401AE0SN1B000 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 global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive, and industrial control ICs with emphasis on safety, efficiency, and reliability.
The S6BP401AE0SN1B000 belongs to Infineon's automotive PMIC portfolio, designed specifically to consolidate power delivery and functional safety supervision for next-generation ADAS sensor ECUs operating under ASIL-B constraints.
FAQ
What is the maximum allowable input voltage for the S6BP401AE0SN1B000 buck converters?
The absolute maximum input voltage for all four buck converters (DD1–DD4) is 6.0 V, but the recommended operating range is strictly 4.5 V to 5.5 V. Exceeding 5.5 V risks violating the internal FET's safe operating area and may trigger immediate overvoltage protection (OVP) shutdown with latch-off behavior unless manually reset.
Does the S6BP401AE0SN1B000 support external synchronization of its switching frequency?
Yes - the SYNC pin (Pin 11) accepts an external clock signal from 1.8 MHz to 2.4 MHz, allowing precise EMI frequency placement and synchronization with other switching regulators in the system. When unused, SYNC must be pulled to GND; floating operation is not permitted and may cause erratic switching behavior.
How does the windowed watchdog timer behave during software-controlled delays?
The windowed watchdog requires WDI pulses to occur within a defined early-to-late window (not just before timeout). Valid pulses outside that window - including too-early or too-late triggers - assert RST. This rejects noise-induced false triggers and accommodates known software delays, such as those during flash programming or sensor calibration routines.
Can the internal LDOs operate independently of the buck converters?
Yes - LD1 and LD2 have separate enable inputs (ENL1, ENL2) and input supplies (PVCCL1, PVCCL2), allowing them to be powered from VCC or another source even if all buck converters are disabled. Their output voltages are preset internally (3.3 V and 1.8 V respectively), and they remain functional down to 2.97 V input without requiring buck regulation.
S6BP401AE0SN1B000 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:
- 1V, 3A
- Voltage/Current - Output 3:
- 1.5V, 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)
S6BP401AE0SN1B000 FAQ
1.How can I place an order for S6BP401AE0SN1B000 through Aetrix?
Please submit a Request for Quotation (RFQ) for S6BP401AE0SN1B000 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 S6BP401AE0SN1B000 reliable?
The price and inventory of S6BP401AE0SN1B000 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S6BP401AE0SN1B000 is usually 5 days.
3.What payment methods are accepted for S6BP401AE0SN1B000?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S6BP401AE0SN1B000 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S6BP401AE0SN1B000?
S6BP401AE0SN1B000 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S6BP401AE0SN1B000 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 S6BP401AE0SN1B000?
For technical support, including S6BP401AE0SN1B000 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S6BP401AE0SN1B000 requirements.
6.How does Aetrix verify that S6BP401AE0SN1B000 is sourced from the original manufacturer or authorized distributors?
All S6BP401AE0SN1B000 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 S6BP401AE0SN1B000 meets industry standards.
7.What is the process for return or replacement of S6BP401AE0SN1B000?
All S6BP401AE0SN1B000 units undergo pre-shipment inspection (PSI). If there is an issue with S6BP401AE0SN1B000, 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 S6BP401AE0SN1B000 part is unused and in its original packaging.
Return procedure for S6BP401AE0SN1B000:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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