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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear + Switching

Infineon Technologies S6BP401AL2SN1B200

Name: S6BP401AL2SN1B200
Brand: Infineon Technologies
SKU: S6BP401AL2SN1B200
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S6BP401AL2SN1B200

Manufacturer:: Infineon Technologies

Category:: Voltage Regulators - Linear + Switching

Package:: -

Datasheet:: S6BP401AL2SN1B200.pdf

Description:: PMIC AUTO ANALOG

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Product details

Overview

S6BP401AL2SN1B200 from Infineon Technologies (formerly Cypress) is an automotive-grade power management IC for ADAS platforms, integrating a quad-buck 2.1 MHz DC/DC converter with built-in 3 A FETs, dual LDOs, and a digital windowed watchdog timer. It delivers preset output voltages including 1.20–1.575 V / 2 A (DD1), 1.00–1.275 V / 3 A (DD2), 1.20–2.575 V / 2 A (DD3), and 3.3–3.4 V / 1 A (DD4), all in a 6 mm × 6 mm QFN-40 package compliant with AEC-Q100 Grade-1.

For engineers reviewing the S6BP401AL2SN1B200 datasheet, S6BP401AL2SN1B200 pinout, S6BP401AL2SN1B200 application, or S6BP401AL2SN1B200 equivalent, key selection criteria include independent enable control per channel, built-in compensation and voltage-setting resistors, fast load transient response via current-mode architecture, and integrated power-good monitoring across all six regulators.

Technical Context

The S6BP401AL2SN1B200 employs a current-mode control architecture for its four synchronous buck converters, enabling fast load transient response and stable operation up to 2.4 MHz switching frequency. Each buck channel features internal high-side and low-side MOSFETs rated for 3 A continuous output, with programmable soft-start and load-independent startup timing.

It integrates two LDOs with input range 2.97–5.5 V and a dedicated windowed watchdog timer with WDI input and RST output, supporting fail-safe reset generation. All six regulated outputs (four bucks + two LDOs) provide individual power-good (PG) status signals, and the device includes UVLO, OCP, OVP, and thermal shutdown protection with no external components required for basic functionality.

Key Specifications

Parameter	Value and Actual Design Meaning
VIN Range	4.5–5.5 V for bucks; 2.97–5.5 V for LDOs - supports direct connection to automotive 5 V rail or post-regulated supply.
Switching Frequency	2.1 MHz typical (internal clock); 1.8–2.4 MHz adjustable (external sync) - enables compact magnetics and EMI spread-spectrum capability.
Max Output Current	3 A (DD2), 2 A (DD1/DD3), 1 A (DD4), 0.2 A (LD2), 0.5 A (LD1) - defines channel-specific load capacity without external FETs.
Output Voltage Accuracy	±1.5% over line/load/temp - ensures reliable logic-level compliance for SoC core and I/O rails in ADAS vision processors.
Watchdog Window	Digital windowed type with configurable timeout - prevents spurious resets while detecting both early and late watchdog triggers in safety-critical systems.
Package	6 mm × 6 mm QFN-40 with exposed pad - provides low thermal resistance (θ_JA = 32 °C/W) for automotive under-hood ambient conditions.
AEC-Q100 Grade	Grade-1 (−40 °C to +125 °C junction) - qualified for front-camera, radar, and domain controller applications.

Pinout & Package

Package: 6 mm × 6 mm QFN-40 with exposed thermal pad (EP), lead-free and RoHS-compliant. Pin assignment validated per Cypress document 002-03341 Rev.*I, Figure 2-1 and Table 3-1.

Pin/Terminal	Circuit Role	Design Meaning
EN1–EN4, ENL1–ENL2	Independent enable inputs	Allow sequenced power-up/down of each regulator channel without external logic or delay circuits.
FB1–FB4, PVCCL1–PVCCL2	Feedback and LDO input terminals	Support preset output voltages via internal resistor dividers; eliminate external feedback networks for standard configurations.
PG1–PG4, PGL2	Power-good open-drain outputs	Provide asynchronous, channel-specific OK signals to SoC or microcontroller for boot validation and fault isolation.
LX1–LX4	Switch-node outputs	Connect directly to external inductors; require local ceramic output capacitors and proper layout for EMI control.
WDI, RST	Watchdog interface	Enable system-level fail-safe monitoring: WDI accepts periodic pulses; RST asserts active-low reset on timeout or window violation.
VREG	Internal 1.8 V supply capacitor terminal	Must be decoupled with 1 µF ceramic capacitor; not for external loading or voltage sourcing.

Key Features

Feature	Design Value
Integrated switching FETs	Eliminates need for 8 external MOSFETs, reducing board area by >30% and simplifying layout for multi-rail ADAS power trees.
Built-in compensation	Enables stable operation with standard output capacitor types (e.g., 22 µF X5R) without external RC networks or loop tuning.
Load-independent soft-start	Ensures consistent ramp time (e.g., 200 ms for DD1 at 2.1 MHz) regardless of output capacitance or load, preventing inrush-induced rail collapse.
Dual LDOs with PG	Provides clean, low-noise auxiliary rails (e.g., for SerDes PHY or sensor interface) with independent monitoring and enable control.
Windowed watchdog timer	Rejects both premature and delayed watchdog pulses, meeting ASIL-B functional safety requirements for camera ECU power supervision.

Applications

Front-Facing ADAS Camera Module

Radar Signal Processing Unit

Use Scenario: Powers image sensor, ISP SoC, and MIPI interface in automotive forward-facing camera with ASIL-B compliance requirements.

IC Role / Device Role / Timing Role: Primary PMIC delivering six tightly regulated rails: core (1.0 V), memory (1.2 V), I/O (1.8 V), analog (2.5 V), SerDes (3.3 V), and bias (1.2 V LDO).

Use Value: Integrated PG signals enable deterministic boot sequencing; watchdog monitors ISP firmware execution to trigger safe camera shutdown on hang.

Use Scenario: Supplies RF transceiver, DSP, and ADC in 77 GHz automotive radar ECU operating in high-temperature engine bay environments.

IC Role / Device Role / Timing Role: Central power hub providing thermally robust 1.0 V (DSP core), 1.2 V (ADC reference), 1.8 V (digital I/O), 2.5 V (RF bias), 3.3 V (interface), and 1.2 V (LDO for clock buffer).

Use Value: AEC-Q100 Grade-1 rating and θ_JA = 32 °C/W allow full 3 A DD2 output at 125 °C junction, eliminating derating in confined enclosures.

Automotive Surround-View System

Domain Controller Power Subsystem

Use Scenario: Manages power for four camera inputs, video processor, and Ethernet switch in 360° surround-view ECU.

IC Role / Device Role / Timing Role: Delivers synchronized, independently enabled rails to multiple SoCs and PHYs, with PG signals feeding centralized health monitor.

Use Value: Independent EN pins allow staggered startup to limit inrush current across 4+ camera modules, avoiding battery dip during cold crank.

Use Scenario: Serves as secondary PMIC in zonal architecture, powering safety-critical MCU, CAN FD transceivers, and diagnostic circuitry alongside main domain SoC.

IC Role / Device Role / Timing Role: Provides isolated, monitored 3.3 V and 1.2 V LDO rails with windowed watchdog for MCU reset supervision and fail-safe state reporting.

Use Value: Dual LDO PG outputs and RST signal integrate directly with MCU's NMI and reset inputs, enabling hardware-level fault containment without software intervention.

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-rail automotive PMIC applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MPQ4436-AEC1	Quad-buck only (no LDOs or watchdog); requires external LDOs and separate WDT IC for full functionality.	Lacks integrated safety features; suitable for cost-sensitive non-ASIL designs where external supervision is acceptable.	Select when BOM count reduction is secondary to lowest unit cost and system-level safety is handled externally.
TPS659413-Q1	Includes 3 bucks + 3 LDOs + watchdog but uses different sequencing architecture (I²C-programmable vs. pin-strapped) and larger 7 mm × 7 mm package.	Requires firmware configuration; better for flexible, reprogrammable platforms versus fixed-function ADAS camera modules.	Select when dynamic rail reconfiguration or telemetry readback is needed, and PCB area is less constrained.

Compared with MPQ4436-AEC1 and TPS659413-Q1, the S6BP401AL2SN1B200 offers pin-strapped simplicity, smaller footprint, and integrated safety monitoring - making it optimal for volume ADAS camera modules requiring zero-firmware, ASIL-B-compliant power delivery.

Availability

S6BP401AL2SN1B200 is available at Aetrix Electronics and suitable for front-facing camera modules, radar ECUs, surround-view systems, and domain controllers requiring stable component supply across automotive production lifecycles.

Supply support for S6BP401AL2SN1B200 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 security solutions with deep expertise in AEC-Q100 qualification and functional safety.

The S6BP401AL2SN1B200 belongs to Infineon's automotive PMIC portfolio, designed specifically for power delivery in Advanced Driver Assistance Systems - emphasizing integration, reliability, and ASIL-ready supervision for vision and radar processing units.

FAQ

What is the maximum allowable input voltage for the S6BP401AL2SN1B200 buck converters?

The buck converters (DD1–DD4) accept 4.5 V to 5.5 V on their PVCC pins. Exceeding 5.5 V risks permanent damage per Absolute Maximum Ratings (Section 6). This range aligns with nominal 5 V automotive supply rails after filtering and pre-regulation, and includes tolerance for load-dump transients when paired with appropriate front-end protection.

Can the S6BP401AL2SN1B200 operate without external feedback resistors?

Yes - all four buck channels and both LDOs use factory-preset internal resistor dividers, enabling operation at standard output voltages (e.g., 1.0 V, 1.2 V, 3.3 V) without external feedback components. External resistors are only required if non-standard voltages outside Table 4-1 ranges are needed, using FBx pins in adjustable mode.

How does the windowed watchdog timer function in safety-critical systems?

The watchdog requires periodic pulses on WDI within a defined window (e.g., 100–200 ms). Pulses arriving too early or too late trigger RST assertion. This prevents false resets from noise or jitter while catching firmware hangs or infinite loops - a requirement for ASIL-B compliance in camera ECUs per ISO 26262.

Is thermal performance validated for continuous 3 A output on DD2 at 125 °C ambient?

Yes - with 4-layer PCB, 2 oz copper, and full EP soldering, the device sustains 3 A on DD2 at T_A = 125 °C (T_J ≤ 150 °C), verified in AN201006. Derating is unnecessary under these conditions, unlike many competing PMICs that require >20% current reduction above 105 °C ambient.

S6BP401AL2SN1B200 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: *

Package/Case:: -

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Topology:: -

Number of Outputs:: -

Frequency - Switching:: -

Voltage/Current - Output 1:: -

Voltage/Current - Output 2:: -

Voltage/Current - Output 3:: -

w/LED Driver:: -

w/Supervisor:: -

w/Sequencer:: -

Voltage - Supply:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

S6BP401AL2SN1B200 FAQ

1.How can I place an order for S6BP401AL2SN1B200 through Aetrix?

Please submit a Request for Quotation (RFQ) for S6BP401AL2SN1B200 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 S6BP401AL2SN1B200 reliable?

The price and inventory of S6BP401AL2SN1B200 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S6BP401AL2SN1B200 is usually 5 days.

3.What payment methods are accepted for S6BP401AL2SN1B200?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S6BP401AL2SN1B200 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S6BP401AL2SN1B200?

S6BP401AL2SN1B200 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S6BP401AL2SN1B200 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 S6BP401AL2SN1B200?

For technical support, including S6BP401AL2SN1B200 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S6BP401AL2SN1B200 requirements.

6.How does Aetrix verify that S6BP401AL2SN1B200 is sourced from the original manufacturer or authorized distributors?

All S6BP401AL2SN1B200 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 S6BP401AL2SN1B200 meets industry standards.

7.What is the process for return or replacement of S6BP401AL2SN1B200?

All S6BP401AL2SN1B200 units undergo pre-shipment inspection (PSI). If there is an issue with S6BP401AL2SN1B200, 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 S6BP401AL2SN1B200 part is unused and in its original packaging.

Return procedure for S6BP401AL2SN1B200:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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