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Infineon Technologies S6BP401AJ0SN1B000
- Part No.:
- S6BP401AJ0SN1B000
- Manufacturer:
- Infineon Technologies
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
S6BP401AJ0SN1B000.pdf
- Description:
- IC REG 6OUT BUCK/LNR SYNC 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,930
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Product details
Overview
S6BP401AJ0SN1B000 from Infineon Technologies (formerly Cypress) is an automotive-grade power management IC for ADAS platforms, integrating a quad buck DC/DC converter (2.1 MHz nominal switching frequency, up to 3 A per channel), dual LDOs, and a digital windowed watchdog timer. It delivers regulated outputs including 1.2–1.575 V / 2 A, 1.0–1.275 V / 3 A, 1.2–2.575 V / 2 A, and 3.3–3.4 V / 1 A, with built-in FETs, compensation, and power-good monitoring - deployed in camera-based driver assistance systems.
For engineers reviewing the S6BP401AJ0SN1B000 datasheet, S6BP401AJ0SN1B000 pinout, S6BP401AJ0SN1B000 application, or S6BP401AJ0SN1B000 equivalent, key selection criteria include AEC-Q100 Grade-1 compliance, independent enable/control per rail, load-independent soft-start, thermal shutdown, and windowed watchdog timing integrity for safety-critical power sequencing.
Technical Context
The S6BP401AJ0SN1B000 employs current-mode control architecture across all four buck converters, enabling fast transient response and stable operation under dynamic load conditions. Each buck channel supports internal clock mode (2.0–2.2 MHz) or external synchronization (1.8–2.4 MHz), with integrated high-side and low-side MOSFETs rated for continuous 3 A output current.
It integrates two LDOs with input range 2.97–5.5 V and fixed-output presets, plus a windowed watchdog timer with WDI trigger and RST reset assertion. Power-good signals are provided per regulator, and UVLO, OCP, OVP, and TSD protections operate independently per domain.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 5.5 V for buck inputs; 2.97 V to 5.5 V for LDO inputs - supports direct connection to automotive 5 V supply rails. |
| Switching Frequency | 2.1 MHz nominal (internal mode); 1.8–2.4 MHz adjustable (external sync) - enables compact filter design with <1 µH inductors. |
| Max Output Current | 3 A per buck channel; 0.2 A and 0.5 A for LDOs - sufficient for image sensor, SoC core, and interface rail loads. |
| Output Voltage Accuracy | ±1.5% over temp and line - ensures reliable logic-level compliance for ADAS processors and sensors. |
| Watchdog Window | Digital windowed timeout (configurable via external resistor) - prevents false resets while detecting firmware hangs in safety-critical boot sequences. |
| AEC-Q100 Grade | Grade-1 (−40 °C to +125 °C ambient) - qualified for under-hood and camera module mounting locations. |
| Package | 6 mm × 6 mm QFN-40 with exposed thermal pad - provides low thermal resistance (<30 °C/W junction-to-board) for sustained 3 A operation. |
Pinout & Package
Package: 6 mm × 6 mm QFN-40 with exposed thermal pad (EP), four corner pads (CP1–CP4), and standard leadframe layout optimized for automotive thermal and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1–EN4, ENL1–ENL2 | Independent enable inputs | Allow sequenced power-up/down of each rail without external logic; pulled low by default for safe power-off state. |
| FB1–FB4 | Voltage feedback nodes | Connect to resistor dividers for adjustable output; internal preset resistors allow fixed-voltage operation without external components. |
| PG1–PG4, PGL2 | Power-good open-drain outputs | Assert low when output is within ±6% of target; used for system enable gating and fault propagation in multi-rail systems. |
| LX1–LX4 | Switch-node outputs | Drive external power inductors; require low-ESR ceramic capacitors and careful layout to minimize ringing and EMI. |
| WDI, RST | Watchdog interface | WDI accepts periodic pulses to prevent timeout; RST asserts active-low reset on window violation - supports ASIL-B functional safety monitoring. |
| VCC, GND, EP | Main supply and ground | VCC powers analog controller; EP must be soldered to solid ground plane for thermal dissipation and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-side/low-side FETs | Eliminates need for 8 external MOSFETs and gate drivers - reduces BOM count and PCB area by >30% vs discrete solutions. |
| Load-independent soft-start | Ensures monotonic voltage ramp regardless of output capacitance or load - prevents inrush current spikes during cold start. |
| Built-in discharge resistors | Actively discharges outputs after disable - avoids floating rails and unintended wake-up in sleep modes. |
| Independent UVLO/OCP/OVP/TSD | Per-channel protection prevents single-point failure from propagating - maintains partial system operation during fault events. |
| Preset output voltage options | Each buck offers ≥12 factory-trimmed VOUT steps (e.g., DD2: 1.000–1.275 V in 25 mV steps) - simplifies qualification for multiple SoC variants. |
Applications
| ADAS Camera Module | Automotive Radar Processor |
|---|---|
Use Scenario: Front-facing stereo camera feeding real-time object detection to domain controller. IC Role / Device Role / Timing Role: Primary PMIC supplying image sensor (1.2 V), ISP core (1.0 V), I/O (1.8 V), and interface (3.3 V) rails with synchronized power-good signaling. Use Value: Independent enable sequencing ensures sensor powers before ISP, preventing initialization lockup; watchdog monitors ISP firmware execution. | Use Scenario: 77 GHz radar SoC requiring tightly regulated, low-noise supplies in compact front-bumper housing. IC Role / Device Role / Timing Role: Delivers 1.0 V @ 3 A for RF processor core, 1.2 V @ 2 A for ADC/DSP, and 3.3 V @ 1 A for CAN-FD interface with thermal-aware throttling. Use Value: 2.1 MHz switching minimizes conducted EMI near sensitive RF receivers; AEC-Q100 Grade-1 guarantees operation at 125 °C ambient. |
| Rear-View Parking System | Digital Cockpit Cluster |
Use Scenario: Multi-camera surround-view system with night-vision IR illumination and video stitching ASIC. IC Role / Device Role / Timing Role: Powers CMOS image sensors (1.2 V), illumination drivers (3.3 V), and video processor (1.2 V) with coordinated power-good handshaking. Use Value: Dual LDOs supply low-noise analog bias for IR LEDs; built-in discharge resistors prevent ghost images during rapid power cycling. | Use Scenario: Instrument cluster with TFT display, microcontroller, and CAN gateway operating behind dashboard glass. IC Role / Device Role / Timing Role: Provides 1.2 V for MCU core, 1.8 V for display controller, 3.3 V for CAN transceiver, and 1.2 V for touch controller - all with independent reset coordination. Use Value: Windowed watchdog enforces deterministic boot timing; PG outputs synchronize display backlight enable with MCU readiness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4436-AEC1 | Single 3 A buck (no LDOs or watchdog); 2.2 MHz fixed frequency; no power-good per rail. | Lacks multi-rail integration and safety monitoring - requires external LDOs and reset supervisor for ADAS use. | Select only if consolidating fewer rails and adding discrete supervision logic is acceptable. |
| TPS659413-Q1 | 6-channel PMIC with 4 bucks + 2 LDOs; includes I²C interface and programmable sequencing; no integrated watchdog. | Offers greater configurability but requires firmware development for sequencing and monitoring - increases validation effort. | Prefer when system-level flexibility and diagnostics outweigh cost and footprint constraints. |
Compared with MPQ4436-AEC1 and TPS659413-Q1, the S6BP401AJ0SN1B000 delivers turnkey ADAS power sequencing with hardware-enforced watchdog timing and per-rail power-good - reducing design risk and qualification time for camera and radar modules.
Availability
S6BP401AJ0SN1B000 is available at Aetrix Electronics and suitable for automotive ADAS camera systems, radar processing units, and digital cockpit clusters requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant reliability.
Supply support for S6BP401AJ0SN1B000 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 specializing in power systems, automotive electronics, and security solutions, with headquarters in Munich, Germany.
The S6BP401AJ0SN1B000 belongs to Infineon's automotive PMIC portfolio, designed specifically to consolidate power delivery and safety monitoring for vision- and radar-based ADAS ECUs - targeting ASIL-B functional safety requirements without external supervision ICs.
FAQ
What is the maximum allowable input voltage for the S6BP401AJ0SN1B000 buck converters?
The buck converter inputs (PVCC1–PVCC4) accept 4.5 V to 5.5 V DC. Exceeding 5.5 V risks permanent damage due to absolute maximum rating violation. Input filtering must suppress transients above this threshold, especially in 12 V automotive systems using pre-regulation.
Can the watchdog timer be disabled or bypassed?
No - the windowed watchdog timer is always active once VCC is applied. The WDI pin must receive valid pulses within the configured window; leaving WDI unconnected or held static will assert RST. There is no hardware disable pin or register setting to deactivate it.
How does the S6BP401AJ0SN1B000 handle thermal overload?
On-die temperature sensing triggers thermal shutdown (TSD) at ~150 °C junction temperature, disabling all regulators and asserting RST. Recovery occurs only after junction cools below ~135 °C hysteresis, and all enables must be reasserted - ensuring safe cooldown before restart.
Are the FB pins internally connected to preset resistors when using fixed output voltages?
Yes - internal resistor dividers are hard-wired to FB pins for all preset output options. External feedback resistors are unnecessary and must not be connected; doing so will cause regulation error. The FB pins remain accessible only for optional fine-tuning in custom designs.
S6BP401AJ0SN1B000 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Topology:
- Step-Down (Buck) Synchronous (4), Linear (LDO) (2)
- Number of Outputs:
- 6
- Frequency - Switching:
- 2.1MHz
- Voltage/Current - Output 1:
- 1.25V, 2A
- Voltage/Current - Output 2:
- 1.25V, 3A
- Voltage/Current - Output 3:
- 1.85V, 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)
S6BP401AJ0SN1B000 FAQ
1.How can I place an order for S6BP401AJ0SN1B000 through Aetrix?
Please submit a Request for Quotation (RFQ) for S6BP401AJ0SN1B000 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 S6BP401AJ0SN1B000 reliable?
The price and inventory of S6BP401AJ0SN1B000 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S6BP401AJ0SN1B000 is usually 5 days.
3.What payment methods are accepted for S6BP401AJ0SN1B000?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S6BP401AJ0SN1B000 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S6BP401AJ0SN1B000?
S6BP401AJ0SN1B000 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S6BP401AJ0SN1B000 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 S6BP401AJ0SN1B000?
For technical support, including S6BP401AJ0SN1B000 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S6BP401AJ0SN1B000 requirements.
6.How does Aetrix verify that S6BP401AJ0SN1B000 is sourced from the original manufacturer or authorized distributors?
All S6BP401AJ0SN1B000 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 S6BP401AJ0SN1B000 meets industry standards.
7.What is the process for return or replacement of S6BP401AJ0SN1B000?
All S6BP401AJ0SN1B000 units undergo pre-shipment inspection (PSI). If there is an issue with S6BP401AJ0SN1B000, 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 S6BP401AJ0SN1B000 part is unused and in its original packaging.
Return procedure for S6BP401AJ0SN1B000:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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