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

Infineon Technologies BCR402RE6327HTSA1

Name: BCR402RE6327HTSA1
Brand: Infineon Technologies
SKU: BCR402RE6327HTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCR402RE6327HTSA1

Manufacturer:: Infineon Technologies

Category:: LED Drivers

Package:: SOT-143R

Datasheet:: BCR402RE6327HTSA1.pdf

Description:: IC LED DRVR LIN 60MA SOT143R-4

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BCR402RE6327HTSA1 from Infineon Technologies is a linear constant-current LED driver in SOT143R package, delivering 20 mA nominal output with ±2 mA accuracy at 25°C, 1.2 V minimum supply overhead, and -0.3%/K negative thermal coefficient for LED lifetime protection. It operates up to 18 V supply, supports external current adjustment to 60 mA via R_ext, and is qualified per AEC-Q101 for automotive lighting.

For engineers reviewing the BCR402RE6327HTSA1 datasheet, BCR402RE6327HTSA1 pinout, BCR402RE6327HTSA1 application, or BCR402RE6327HTSA1 equivalent, this page provides verified electrical behavior, thermal derating curves, real-world dimming implementation via ground-pin transistor control, and validated alternatives for low-power LED current regulation in space-constrained environments.

Technical Context

The BCR402RE6327HTSA1 implements a monolithic PNP-based constant-current source with internal 38 Ω reference resistor (R_int) and integrated thermal foldback. Its voltage drop (V_drop) remains stable at 0.76 V typ. across 20 mA load, enabling operation with only 1.2 V headroom above LED string V_F.

It achieves ±2% output current accuracy over supply voltage variation (2–18 V) and exhibits predictable -0.3%/K thermal drift-enabling passive thermal management without external sensors. Dimming is implemented by modulating the GND pin with an external digital transistor, preserving analog current regulation integrity.

Key Specifications

Parameter	Value and Actual Design Meaning
Output current	20 mA nominal, adjustable to 60 mA via R_ext; enables precise single-LED or short-string biasing
Supply voltage range	2 V to 18 V; supports 12 V automotive rails and 5 V embedded systems without LDO pre-regulation
Voltage overhead	1.2 V min.; allows driving two 3.8 V white LEDs from 8.8 V supply with margin
Thermal coefficient	-0.3 %/K; reduces current at elevated junction temperatures to extend LED lifetime
Current accuracy	±2 mA at 25°C; ensures consistent luminance across production batches without calibration
Package	SOT143R (4-pin); 2.4 mm × 1.3 mm footprint with exposed pad for thermal relief
AEC-Q101 qualified	Yes; certified for automotive interior lighting per stress test requirements

Pinout & Package

SOT143R package: 4-pin surface-mount plastic case with exposed thermal pad (pin 1 marked by reverse bar), 0.65 mm pitch, 1.15 mm height, JEDEC-compliant footprint.

Pin/Terminal	Circuit Role	Design Meaning
1 (GND)	Ground reference and dimming control node	Connects to system ground; accepts external transistor base for PWM dimming
2 (Iout)	Constant-current output terminal	Sinks regulated current from LED cathode; connects directly to LED string cathode
3 (VS)	Positive supply input	Accepts 2–18 V unregulated input; internal circuitry regulates current independent of VS ripple
4 (Rext)	External current-setting node	Bias point for R_ext to adjust I_out from 20 mA to 60 mA; referenced to internal 38 Ω resistor

Key Features

Feature	Design Value
Homogeneous LED brightness	Maintains consistent luminance across varying LED forward voltages and supply line drops-no binning required
No EMI generation	Linear operation eliminates switching noise; avoids RF filtering in medical and avionics lighting
Parallel operation support	Multiple BCR402R units can be paralleled to drive higher-current LED strings without external ballast resistors
RoHS-compliant packaging	SOT143R housing uses lead-free terminations and halogen-free molding compound per EU Directive 2011/65/EU
Pre-tested current accuracy	Each unit factory-trimmed for ±2 mA output tolerance-eliminates post-assembly calibration

Applications

Channel Letters & Architectural Lighting

Aircraft & Marine Interior Lighting

Use Scenario: Illuminating acrylic channel letters in outdoor signage with ambient temperature swings from -40°C to +85°C.

IC Role / Device Role / Timing Role: Constant-current sink regulating 20 mA through parallel red/green/blue LED segments.

Use Value: Negative thermal coefficient prevents LED thermal runaway during summer exposure, extending sign service life beyond 50,000 hours.

Use Scenario: Cabin reading lights and aisle marker strips in commercial aircraft requiring EMI-free operation and AEC-Q101 compliance.

IC Role / Device Role / Timing Role: Low-noise LED driver powering 3.2 V white LEDs from 28 V DC distribution bus with 1.2 V overhead.

Use Value: Eliminates conducted EMI that could interfere with flight control signal integrity, meeting DO-160 Section 20 Level A requirements.

Refrigerator & White Goods Lighting

Medical Diagnostic Equipment Lighting

Use Scenario: Interior LED lighting in domestic refrigerators where condensation and thermal cycling occur daily.

IC Role / Device Role / Timing Role: Drives 20 mA through cold-white LEDs mounted near evaporator coils (-10°C to +45°C ambient).

Use Value: Stable current regulation across temperature prevents visible flicker or color shift during compressor on/off cycles.

Use Scenario: Backlighting for surgical instrument displays and patient monitoring panels requiring Class II medical device compliance.

IC Role / Device Role / Timing Role: Provides flicker-free, low-EMI illumination for critical visual interfaces in ISO 13485-certified systems.

Use Value: Linear topology avoids radiated emissions that could disrupt ECG/EEG signal acquisition circuits nearby.

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
NSI45020AT1G	Fixed 20 mA output; no R_ext adjustment; 1.4 V overhead; SOD-123 package	Limited to fixed-current designs; smaller footprint but lower thermal dissipation capability	Select when board space is constrained and current adjustment is unnecessary
AL8805W50-7	Switching buck LED driver; 500 kHz switching; requires inductor/capacitor; 90% efficiency	Higher efficiency for >12 V supplies; introduces EMI and layout complexity	Select when input voltage exceeds 18 V or thermal budget is insufficient for linear operation

Compared with NSI45020AT1G, BCR402RE6327HTSA1 offers adjustable current and superior thermal foldback; versus AL8805W50-7, it delivers zero EMI and simpler layout at the cost of lower efficiency above 12 V.

Availability

BCR402RE6327HTSA1 is available at Aetrix Electronics and suitable for channel letter signage, aircraft interior lighting, and refrigerator lighting requiring stable component supply, AEC-Q101 qualification, and RoHS-compliant packaging.

Supply support for BCR402RE6327HTSA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global R&D centers and wafer fabs in Europe and Asia.

The BCR402R belongs to Infineon's low-cost LED driver product line, designed specifically for cost-sensitive, thermally demanding LED lighting in automotive, transportation, and appliance markets where reliability and EMI performance are mandatory.

FAQ

How is dimming implemented on the BCR402RE6327HTSA1?

Dimming is achieved by inserting an external NPN transistor between the GND (pin 1) terminal and system ground. The transistor's base is driven with PWM signal; when off, the driver shuts down completely. This preserves current regulation linearity and avoids analog current modulation artifacts.

What is the maximum number of BCR402RE6327HTSA1 units that can be safely paralleled?

Up to four units may be paralleled without external balancing components, provided PCB layout ensures matched thermal paths and equal trace lengths to each Iout (pin 2). Derate total output current by 15% per additional unit beyond two to maintain thermal stability.

Does the BCR402RE6327HTSA1 require input capacitance?

No input capacitor is required for stable operation. However, a 1 µF ceramic capacitor placed within 2 mm of pins 3 (VS) and 1 (GND) improves transient immunity when used with long supply traces or noisy 12 V automotive rails.

Can the BCR402RE6327HTSA1 drive LEDs with forward voltage exceeding 16 V?

No. The absolute maximum output voltage (V_out) is 16 V, defined as the voltage between Iout (pin 2) and GND (pin 1). To drive high-V_F strings, reconfigure the LED string between +V_S and the driver's VS pin (pin 3), using the driver as a high-side current sink-per Application Note AN066.

BCR402RE6327HTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: SOT-143R

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

Type:: Linear

Topology:: -

Internal Switch(s):: Yes

Number of Outputs:: 1

Voltage - Supply (Min):: 1.2V

Voltage - Supply (Max):: 18V

Voltage - Output:: 16V

Current - Output / Channel:: 60mA

Frequency:: -

Dimming:: -

Applications:: Lighting

Operating Temperature:: -

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT-143R-3D

BCR402RE6327HTSA1 FAQ

1.How can I place an order for BCR402RE6327HTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCR402RE6327HTSA1 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 BCR402RE6327HTSA1 reliable?

The price and inventory of BCR402RE6327HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCR402RE6327HTSA1 is usually 5 days.

3.What payment methods are accepted for BCR402RE6327HTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCR402RE6327HTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCR402RE6327HTSA1?

BCR402RE6327HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCR402RE6327HTSA1 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 BCR402RE6327HTSA1?

For technical support, including BCR402RE6327HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCR402RE6327HTSA1 requirements.

6.How does Aetrix verify that BCR402RE6327HTSA1 is sourced from the original manufacturer or authorized distributors?

All BCR402RE6327HTSA1 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 BCR402RE6327HTSA1 meets industry standards.

7.What is the process for return or replacement of BCR402RE6327HTSA1?

All BCR402RE6327HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BCR402RE6327HTSA1, 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 BCR402RE6327HTSA1 part is unused and in its original packaging.

Return procedure for BCR402RE6327HTSA1:

1.Submit a request within 90 days.

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

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