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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > LED Drivers

Infineon Technologies BCR401UE6327HTSA1

Name: BCR401UE6327HTSA1
Brand: Infineon Technologies
SKU: BCR401UE6327HTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCR401UE6327HTSA1

Manufacturer:: Infineon Technologies

Category:: LED Drivers

Package:: SC-74, SOT-457

Datasheet:: BCR401UE6327HTSA1.pdf

Description:: IC LED DRVR LIN PWM 65MA SC74-6

Quantity:: RFQ Add To RFQ list

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Inventory:372,158

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Product details

Overview

BCR401UE6327HTSA1 from Infineon Technologies is a constant-current LED driver IC designed for automotive interior lighting, delivering 15 mA ±5% regulated current over 2.7 V to 40 V input range with integrated thermal shutdown and reverse-polarity protection. It operates in linear mode without external inductors, supports PWM dimming up to 25 kHz, and is qualified to AEC-Q100 Grade 1 (−40 °C to +125 °C).

For engineers reviewing the BCR401UE6327HTSA1 datasheet, BCR401UE6327HTSA1 pinout, BCR401UE6327HTSA1 application, or BCR401UE6327HTSA1 equivalent, key selection criteria include its fixed 15 mA output, wide VIN tolerance, integrated fault protection, and suitability for space-constrained automotive LED biasing where low EMI and simplicity are critical.

Technical Context

The BCR401UE6327HTSA1 is a single-channel linear LED driver with internal current-setting resistor and no external feedback loop - current regulation is achieved via precision on-die reference and matched transistor pairs. Its architecture eliminates switching noise and enables direct connection to LEDs without filtering components.

It features active thermal foldback that reduces output current above 150 °C junction temperature, and includes undervoltage lockout (UVLO) at 2.4 V typical and reverse-voltage protection down to −40 V, making it robust for harsh automotive electrical environments including load dump and battery reversal events.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Current	15 mA ±5% - fixed, factory-trimmed current ideal for biasing single or parallel LEDs without external resistors.
Input Voltage Range	2.7 V to 40 V - supports full automotive battery range including cold-crank (≥2.7 V) and load dump (≤40 V).
Thermal Shutdown Threshold	150 °C typical - protects against overheating during high ambient or high-power dissipation conditions.
PWM Dimming Frequency	Up to 25 kHz - enables flicker-free dimming above human perception threshold without audible noise.
AEC-Q100 Grade	Grade 1 (−40 °C to +125 °C) - qualified for under-hood and cabin applications requiring extended temperature reliability.
Reverse Voltage Protection	−40 V - withstands battery polarity reversal without damage or latch-up.
Quiescent Current	120 µA max - minimizes standby power loss in always-on lighting systems.

Pinout & Package

BCR401UE6327HTSA1 is housed in the SOT-26 (SC-74) package - a 6-pin, surface-mount, lead-free, RoHS-compliant plastic package with exposed thermal pad for enhanced heat dissipation.

Pin/Terminal	Circuit Role	Design Meaning
IN	Supply Input	Connects to battery rail (2.7–40 V); internal UVLO and reverse-protection circuitry referenced here.
GND	Ground Reference	System ground return path; also serves as thermal interface via exposed pad.
OUT	LED Anode Output	Current-source output driving LED anode; voltage compliance up to VIN − 1.5 V.
EN	Enable Control	Active-high logic input; pulls device into low-I_Q shutdown when low (< 0.4 V).
PWM	Pulse-Width Modulation Input	Accepts 0–5 V logic-level PWM signal to modulate LED brightness without affecting current accuracy.
NC	No Connect	Internally unused pin; must be left floating or tied to GND per layout guidelines.

Key Features

Feature	Design Value
Integrated Reverse Polarity Protection	Withstands −40 V applied to IN without external diode, reducing BOM count and PCB area.
Fixed 15 mA Current Accuracy	±5% over temperature and supply voltage ensures consistent LED luminance across vehicle lifetime.
Thermal Foldback	Gradually reduces output current above 150 °C to prevent thermal runaway while maintaining partial functionality.
Low Quiescent Current	120 µA max in shutdown enables use in always-on modules without excessive battery drain.
EMI-Free Linear Operation	No switching elements or inductors required - eliminates conducted and radiated noise concerns in sensitive infotainment zones.

Applications

Automotive Interior Lighting

Dashboard Backlighting

Use Scenario: Illumination of push buttons, rotary knobs, and trim accents in door panels and center consoles.

IC Role / Device Role / Timing Role: Constant-current source regulating individual LEDs or small parallel strings without external components.

Use Value: Ensures uniform brightness across temperature and battery voltage variations, meeting OEM photometric consistency requirements.

Use Scenario: Edge-lit or direct-lit LCD backlighting for instrument clusters and digital displays.

IC Role / Device Role / Timing Role: Biasing white or RGB LED strings with precise current matching to avoid color shift and hotspots.

Use Value: Maintains display contrast and readability across −40 °C to +85 °C operating range without PWM-induced flicker.

Footwell Ambient Lighting

Map Light Modules

Use Scenario: Low-profile LED strips mounted beneath front/rear footwells for occupant orientation.

IC Role / Device Role / Timing Role: Single-channel linear driver enabling compact, in-line placement along flexible PCBs.

Use Value: Eliminates need for inductors or capacitors, simplifying mechanical integration and reducing height profile to < 1.1 mm.

Use Scenario: Overhead map lights with soft-on/off fade controlled via microcontroller PWM.

IC Role / Device Role / Timing Role: PWM-dimmable current source synchronized to MCU timing for smooth transitions.

Use Value: Supports 25 kHz PWM without audible coil whine or LED current ripple, satisfying NVH targets.

Equivalent & Alternatives

The following parts are listed as comparable options for similar constant-current LED driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCR402U E6327HTSA1	Dual-channel version with independent enable and PWM inputs per channel; same 15 mA per channel.	Suitable for multi-zone lighting where separate control of two LED groups is required.	Select when board space allows dual-channel integration and independent dimming is needed.
ASL3416SHN	High-side switch with adjustable current (10–60 mA), I²C interface, and diagnostic reporting.	Used in advanced lighting modules requiring programmability, diagnostics, and bus communication.	Choose when system-level monitoring (open/short detection, temp reporting) and configurability outweigh cost and complexity.

Compared with BCR401UE6327HTSA1, the BCR402U offers channel doubling without increasing footprint, while the ASL3416SHN adds intelligence and flexibility at the cost of higher BOM count and firmware dependency - select based on whether deterministic analog simplicity or digital controllability is prioritized.

Availability

BCR401UE6327HTSA1 is available at Aetrix Electronics and suitable for automotive interior lighting, dashboard backlighting, and footwell ambient lighting requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.

Supply support for BCR401UE6327HTSA1 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 manufacturer specializing in power management, automotive ICs, and security solutions, with global manufacturing and R&D infrastructure.

The BCR401U belongs to Infineon's LITIX™ Basic family - engineered specifically for cost-sensitive, high-volume automotive LED biasing applications where reliability, minimal external components, and AEC-Q100 qualification are mandatory.

FAQ

What is the maximum power dissipation of BCR401UE6327HTSA1 at 125 °C ambient?

At T_A = 125 °C, the maximum allowable power dissipation is 290 mW, calculated using R_thJA = 430 K/W and T_JMAX = 150 °C. This limits usable voltage drop across the device to ~19.3 V at 15 mA. Derating curves in the datasheet define safe operating area for higher ambient temperatures.

Can BCR401UE6327HTSA1 drive multiple LEDs in series?

No - BCR401UE6327HTSA1 is a constant-current sink with limited voltage compliance (typically VIN − 1.5 V). It can only drive LEDs in parallel or single-LED strings where forward voltage remains below this headroom. Series strings require higher compliance voltage not supported by this linear regulator.

Is the NC pin required to be grounded?

The NC pin is internally unconnected and must not be soldered to any net. Per Infineon layout recommendations, it may be left floating or optionally tied to GND for mechanical stability - but no electrical function is assigned, and grounding does not affect operation or thermal performance.

Does BCR401UE6327HTSA1 support analog dimming?

No - analog dimming via voltage-controlled current adjustment is not supported. Dimming is exclusively implemented via PWM signal applied to the PWM pin, with minimum pulse width of 1 µs and duty cycle linearity maintained from 0.1% to 100% at frequencies up to 25 kHz.

BCR401UE6327HTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: SC-74, SOT-457

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Linear

Topology:: -

Internal Switch(s):: Yes

Number of Outputs:: 1

Voltage - Supply (Min):: 1.4V

Voltage - Supply (Max):: 40V

Voltage - Output:: 40V

Current - Output / Channel:: 65mA

Frequency:: -

Dimming:: PWM

Applications:: Lighting

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SC74-6

BCR401UE6327HTSA1 FAQ

1.How can I place an order for BCR401UE6327HTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCR401UE6327HTSA1 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 BCR401UE6327HTSA1 reliable?

The price and inventory of BCR401UE6327HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCR401UE6327HTSA1 is usually 5 days.

3.What payment methods are accepted for BCR401UE6327HTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCR401UE6327HTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCR401UE6327HTSA1?

BCR401UE6327HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCR401UE6327HTSA1 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 BCR401UE6327HTSA1?

For technical support, including BCR401UE6327HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCR401UE6327HTSA1 requirements.

6.How does Aetrix verify that BCR401UE6327HTSA1 is sourced from the original manufacturer or authorized distributors?

All BCR401UE6327HTSA1 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 BCR401UE6327HTSA1 meets industry standards.

7.What is the process for return or replacement of BCR401UE6327HTSA1?

All BCR401UE6327HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BCR401UE6327HTSA1, 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 BCR401UE6327HTSA1 part is unused and in its original packaging.

Return procedure for BCR401UE6327HTSA1:

1.Submit a request within 90 days.

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

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