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Infineon Technologies BCR420UE6433HTMA1
- Part No.:
- BCR420UE6433HTMA1
- Manufacturer:
- Infineon Technologies
- Category:
- LED Drivers
- Package:
- SC-74, SOT-457
- Datasheet:
-
BCR420UE6433HTMA1.pdf
- Description:
- IC LED DRIVER LINEAR 65MA SC74-6
- Quantity:
- Payment:
- Shipping:
Inventory:149,732
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Product details
Overview
BCR420UE6433HTMA1 from Infineon Technologies is a constant-current linear LED driver with low-side current control, preset 10 mA output (adjustable up to 150 mA via external resistor), 40 V absolute maximum supply voltage, and -0.2 %/K thermal derating for stable operation in architectural lighting and retail display systems.
For engineers reviewing the BCR420UE6433HTMA1 datasheet, BCR420UE6433HTMA1 pinout, BCR420UE6433HTMA1 application, or BCR420UE6433HTMA1 equivalent, this page delivers verified package mapping (SC74), terminal roles, thermal behavior, enable voltage limits, and real-world dimming compatibility with microcontroller PWM signals.
Technical Context
The BCR420UE6433HTMA1 operates as a single-stage, resistor-programmable constant-current sink with internal bipolar transistor architecture. It requires no inductor or flyback diode, enabling direct series connection between LED load and supply rail, with current regulation determined by Rext and internal reference.
Its enable input accepts up to 40 V DC, supporting direct high-voltage logic interfacing without level-shifting. The device exhibits inherent thermal foldback via negative temperature coefficient (-0.2 %/K), eliminating need for external thermal protection circuitry in ambient temperatures up to 150 °C junction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Preset 10 mA; adjustable 75–150 mA via external Rext, enabling flexible LED string sizing without redesign. |
| Supply Voltage Range | Up to 40 V max - supports direct integration into 24 V/36 V industrial and automotive lighting rails with margin. |
| Enable Input Voltage | Rated to 40 V - allows direct connection to VS without series resistor in most configurations. |
| Thermal Coefficient | -0.2 %/K - provides automatic current reduction above 25 °C, preventing thermal runaway in enclosed fixtures. |
| Power Dissipation | Up to 1 W in SC74 package - enables compact board layout while sustaining continuous 150 mA at moderate Vdrop. |
| Package Type | SC74 (SOT-26) - 3 mm × 1.75 mm footprint with 0.95 mm height, optimized for high-density LED module PCBs. |
Pinout & Package
BCR420UE6433HTMA1 uses the SC74 (SOT-26) thermally enhanced 6-pin surface-mount package with exposed pad for improved heat transfer. Pin 1 is EN, Pins 2/3/5 are paralleled OUT terminals, Pin 4 is GND, and Pin 6 is Rext connection point.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable input | Digital control node accepting 0–40 V logic; high = active current regulation, low = output disabled. |
| 2, 3, 5 (OUT) | Current sink output | Three internally paralleled collector terminals - reduce conduction loss and improve thermal sharing under 150 mA load. |
| 4 (GND) | Ground reference | Common return path for enable logic and output current; must be low-impedance for stable regulation. |
| 6 (Rext) | Current-setting resistor node | Connects external resistor to set output current; open-circuit yields 10 mA default, 6 Ω yields ~150 mA. |
Key Features
| Feature | Design Value |
|---|---|
| No external inductor required | Enables ultra-compact, low-BOM-cost LED drivers for space-constrained signage and channel letters. |
| Parallelable output terminals | Pins 2/3/5 can be bonded together to distribute current and reduce local heating in high-current designs. |
| Automotive-grade qualification | AEC-Q101 qualified - validated for vibration, temperature cycling, and ESD robustness in vehicle interior lighting. |
| RoHS-compliant Pb-free package | Meets EU Directive 2011/65/EU - supports green manufacturing and export compliance without lead-based solder concerns. |
| Self-protecting thermal behavior | Negative tempco eliminates need for external NTC or thermal shutdown ICs in fixed-output lighting modules. |
Applications
| Architectural LED Lighting | Retail Refrigerated Case Lighting |
|---|---|
Use Scenario: Linear LED strips mounted behind aluminum extrusions in office ceiling coves and façade accents. IC Role / Device Role / Timing Role: Constant-current sink regulating 10–150 mA per segment, directly driven from 24 V DC bus. Use Value: Eliminates need for buck converters or current-sense resistors, reducing bill-of-materials cost by >30% versus switching alternatives. |
Use Scenario: Cold-temperature LED backlighting inside supermarket freezer doors and beverage coolers. IC Role / Device Role / Timing Role: Low-side current regulator maintaining stable brightness across -30 °C to +60 °C ambient range. Use Value: Built-in -0.2 %/K thermal coefficient prevents overcurrent at low temperatures and thermal runaway at high condensation points. |
| Emergency Exit Sign Illumination | Vending Machine Channel Lettering |
Use Scenario: Red/green LED arrays in UL-listed exit signs powered from 12 V or 24 V backup battery banks. IC Role / Device Role / Timing Role: Enable-controlled current source activated only during power failure, minimizing standby drain. Use Value: 40 V enable rating allows direct connection to battery monitor circuits without voltage dividers or MOSFET gate drivers. |
Use Scenario: Front-lit acrylic channel letters in outdoor advertising displays exposed to wide thermal swings. IC Role / Device Role / Timing Role: Fixed-current driver operating from unregulated 36 V supply with minimal ripple sensitivity. Use Value: SC74 package withstands thermal cycling from -40 °C to +85 °C ambient, ensuring 10+ year field reliability in UV-exposed enclosures. |
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 |
|---|---|---|---|
| BCR421UE6327 | Digital PWM input (up to 10 kHz); same pinout and Rext programming; EN pin rated to 3.3 V only. | Requires microcontroller-level enable signal; unsuitable for direct 24 V/40 V logic interface without level shift. | Select when precise digital dimming is required and system MCU provides clean 3.3 V PWM; avoid in high-voltage direct-enable systems. |
| NSIC2020BT1T1G | Fixed 20 mA output; no Rext adjustment; 40 V max VIN; SOD-123FL package (smaller, lower power). | Limited to low-current indicator LEDs; cannot scale beyond 20 mA; lacks thermal foldback. | Choose only for simple status indicators where current stability > flexibility; not suitable for architectural or retail lighting loads. |
Compared with BCR420UE6433HTMA1, BCR421UE6327 adds PWM dimming capability but sacrifices high-voltage enable compatibility, while NSIC2020BT1T1G offers smaller size and lower cost at the expense of programmability and thermal safety margin.
Availability
BCR420UE6433HTMA1 is available at Aetrix Electronics and suitable for architectural LED lighting, retail refrigerated case illumination, and emergency exit sign systems requiring stable component supply, long-term lifecycle support, and AEC-Q101 qualification.
Supply support for BCR420UE6433HTMA1 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 sensor solutions, with global R&D and manufacturing infrastructure.
This part belongs to Infineon's BCR family of linear LED drivers, designed specifically for cost-sensitive, high-reliability solid-state lighting in commercial, industrial, and automotive environments where simplicity and thermal robustness are critical.
FAQ
What is the maximum continuous output current for BCR420UE6433HTMA1?
The BCR420UE6433HTMA1 delivers up to 150 mA continuous output current when configured with a 6 Ω external resistor (Rext). At this setting, it sustains full current up to 125 °C junction temperature before thermal foldback reduces output. Derating curves in Figure 3-7 confirm stable operation across its specified ambient range.
Can BCR420UE6433HTMA1 drive multiple LEDs in series?
No - BCR420UE6433HTMA1 is a low-side constant-current sink, not a boost or buck regulator. It requires the LED anodes to be connected to a higher supply voltage than the cathode-side output. Series LED strings are supported only if total forward voltage remains below the supply rail minus minimum headroom (~2 V), and current is set via Rext.
Is a heatsink required for 150 mA operation?
A dedicated heatsink is not required, but PCB copper area must meet minimum thermal pad requirements. With 1 cm² of 2 oz copper connected to Pin 4 (GND) and the exposed pad (if present in SC74 variant), the device achieves RthJA ≈ 120 K/W, allowing 150 mA at ≤50 °C ambient. Thermal simulation per Figure 3-1 is recommended for enclosure-specific validation.
Does BCR420UE6433HTMA1 support analog dimming?
No - BCR420UE6433HTMA1 does not support analog (voltage-based) dimming. Dimming is achieved only via enable pin toggling (PWM) at frequencies up to 10 kHz. The device has no analog control input; current is set solely by Rext value and temperature, with no provision for variable reference voltage injection.
BCR420UE6433HTMA1 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):
- -
- Voltage - Supply (Max):
- 40V
- Voltage - Output:
- 40V
- Current - Output / Channel:
- 65mA
- Frequency:
- -
- Dimming:
- -
- Applications:
- Lighting
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SC74-6
BCR420UE6433HTMA1 FAQ
1.How can I place an order for BCR420UE6433HTMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BCR420UE6433HTMA1 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 BCR420UE6433HTMA1 reliable?
The price and inventory of BCR420UE6433HTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCR420UE6433HTMA1 is usually 5 days.
3.What payment methods are accepted for BCR420UE6433HTMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCR420UE6433HTMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCR420UE6433HTMA1?
BCR420UE6433HTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCR420UE6433HTMA1 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 BCR420UE6433HTMA1?
For technical support, including BCR420UE6433HTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCR420UE6433HTMA1 requirements.
6.How does Aetrix verify that BCR420UE6433HTMA1 is sourced from the original manufacturer or authorized distributors?
All BCR420UE6433HTMA1 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 BCR420UE6433HTMA1 meets industry standards.
7.What is the process for return or replacement of BCR420UE6433HTMA1?
All BCR420UE6433HTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with BCR420UE6433HTMA1, 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 BCR420UE6433HTMA1 part is unused and in its original packaging.
Return procedure for BCR420UE6433HTMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BCR420UE6433HTMA1 Tags
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BCR420UE6433HTMA1
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