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Infineon Technologies BCR420UE6327HTSA1
- Part No.:
- BCR420UE6327HTSA1
- Manufacturer:
- Infineon Technologies
- Category:
- LED Drivers
- Package:
- SC-74, SOT-457
- Datasheet:
-
BCR420UE6327HTSA1.pdf
- Description:
- IC LED DRVR LIN PWM 200MA SC74-6
- Quantity:
- Payment:
- Shipping:
Inventory:102,191
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Product details
Overview
BCR420UE6327 from Infineon Technologies is a linear LED driver IC with low-side current regulation, preset 10 mA output (adjustable up to 150 mA via external resistor), 40 V absolute maximum supply voltage, -0.2 %/K thermal derating, and SC74 package. It drives single 0.25 W LEDs in architectural lighting, channel letters, and retail cold-case illumination without inductors or diodes.
For engineers reviewing the BCR420UE6327 datasheet, BCR420UE6327 pinout, BCR420UE6327 application, or BCR420UE6327 equivalent, key selection criteria include enable-pin voltage tolerance (40 V max), Rext-based current programming, thermal coefficient impact on luminous stability, and AEC-Q101 qualification for automotive-adjacent lighting systems.
Technical Context
The BCR420UE6327 operates as a constant-current sink with internal pass transistor controlled by an enable input. Its current regulation relies on external Rext feedback and exhibits inherent thermal foldback due to a -0.2 %/K negative temperature coefficient - no external thermal sensor required.
It supports direct connection to supply rails up to 40 V, provided LED forward voltage drop reduces output node voltage below the 40 V breakdown limit. The EN pin accepts up to 40 V DC, and optional series resistance extends safe operation beyond that threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Preset 10 mA; adjustable up to 150 mA via external Rext - enables flexible LED brightness tuning without DAC or microcontroller. |
| Supply Voltage Max | 40 V - supports direct integration into 24 V and 36 V industrial/commercial LED power rails with margin. |
| Thermal Coefficient | -0.2 %/K - automatically reduces output current at elevated temperatures, preventing thermal runaway in enclosed fixtures. |
| Power Dissipation | Up to 1 W in SC74 package - allows compact PCB layout without heatsinking for ≤150 mA loads at moderate ambient temperatures. |
| Enable Pin Voltage | Max 40 V - permits direct MCU GPIO control or high-side switching without level-shifting circuitry. |
| AEC-Q101 Qualified | Yes - validated for automotive-adjacent applications including emergency signage and vehicle interior lighting. |
Pinout & Package
BCR420UE6327 uses the SC74 (SOT-26) thermally enhanced 6-pin surface-mount package, with exposed pad for improved heat dissipation. Pin 1 = EN (enable input), Pins 2/3/5 = OUT (parallel output terminals), Pin 4 = GND, Pin 6 = Rext (current-setting resistor connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable input | Digital control signal; high = active sink; withstands up to 40 V - simplifies interface with 3.3 V/5 V/24 V logic sources. |
| 2, 3, 5 (OUT) | Current-sink output | Parallel low-side output paths - reduce conduction loss and thermal stress when driving higher-current LEDs or paralleling multiple drivers. |
| 4 (GND) | Ground reference | Common return for EN, OUT, and Rext - must be low-impedance to maintain current accuracy and thermal stability. |
| 6 (Rext) | Current-setting terminal | Connects external resistor to set output current; open = 10 mA default - eliminates need for precision current sources or DACs. |
Key Features
| Feature | Design Value |
|---|---|
| No external inductor or capacitor required | Enables ultra-compact, low-BOM-cost LED driver design - ideal for space-constrained signage and strip lighting modules. |
| Parallelable outputs (Pins 2/3/5) | Allows stacking multiple BCR420UE6327 units to scale current beyond 150 mA while maintaining thermal balance across shared GND path. |
| Negative thermal coefficient (-0.2 %/K) | Provides passive overtemperature protection - avoids need for external thermal shutdown circuitry or firmware monitoring. |
| RoHS-compliant SC74 package | Meets environmental compliance requirements for global commercial lighting products and supports lead-free reflow assembly. |
| 40 V breakdown rating | Supports robust operation in 24 V/36 V systems where transient spikes or LED open-circuit conditions may occur. |
Applications
| Architectural LED Lighting | Channel Letter Advertising |
|---|---|
Use Scenario: Linear LED arrays mounted on building façades or interior feature walls requiring uniform brightness and long-term reliability. IC Role / Device Role / Timing Role: Constant-current sink regulating individual 0.25 W LEDs in series strings or parallel branches. Use Value: Eliminates current-matching resistors and enables stable luminance across wide ambient temperature ranges (-40 °C to +125 °C junction). |
Use Scenario: Illuminating plastic or metal channel letters in outdoor signage, subject to thermal cycling and voltage fluctuations. IC Role / Device Role / Timing Role: Low-side current controller per LED segment, enabling independent dimming and fault isolation. Use Value: Built-in thermal foldback prevents LED degradation during summer daytime operation; 40 V rating tolerates line surges in unregulated AC/DC supplies. |
| Retail Cold-Case Lighting | Emergency Exit Signage |
Use Scenario: LED strips inside refrigerated display cases (e.g., supermarket freezers), operating continuously at sub-zero ambient temperatures. IC Role / Device Role / Timing Role: Fixed-current driver powering 0.25 W white LEDs with minimal thermal drift. Use Value: Negative temperature coefficient increases current slightly at low temperatures - counteracting LED forward-voltage rise and maintaining consistent lumen output. |
Use Scenario: Battery-backed exit signs and step lighting in commercial buildings, requiring fail-safe operation and long service life. IC Role / Device Role / Timing Role: Primary LED current regulator in backup lighting circuits, interfaced with enable control from battery management IC. Use Value: AEC-Q101 qualification ensures reliability under vibration and thermal stress; 1 W dissipation capability supports high-brightness LED configurations for visibility in smoke. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED current regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BCR421UE6327 | Digital PWM input (up to 10 kHz); EN pin rated for 3.3 V only - requires level-shifting for >3.3 V logic. | Preferred for microcontroller-driven dimming; unsuitable for direct 24 V enable control. | Select BCR421U when precise analog-dimming replacement is needed and PWM interface is available. |
| NSI45020AT1G (onsemi) | Fixed 20 mA output; no Rext adjustment; 45 V breakdown; no AEC-Q101 qualification. | Suitable for cost-sensitive, non-automotive LED indicators but lacks thermal foldback and programmability. | Choose NSI45020AT1G only for simple indicator applications where current stability over temperature is secondary. |
Compared with BCR420UE6327, BCR421UE6327 adds PWM dimming capability at the expense of enable-voltage flexibility, while NSI45020AT1G trades programmability and automotive qualification for lower unit cost and higher voltage tolerance - making BCR420UE6327 optimal for thermally demanding, field-serviceable commercial lighting designs.
Availability
BCR420UE6327 is available at Aetrix Electronics and suitable for architectural lighting, retail cold-case illumination, and emergency signage requiring stable component supply, long-lifecycle support, and AEC-Q101 reliability assurance.
Supply support for BCR420UE6327 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 manufacturing and quality certification infrastructure.
The BCR420U product line delivers cost-optimized, thermally robust linear LED drivers for commercial and automotive-adjacent lighting - emphasizing simplicity, reliability, and thermal safety without external passive components.
FAQ
Can BCR420UE6327 drive multiple LEDs in series?
No. BCR420UE6327 is a low-side constant-current sink designed for single 0.25 W LEDs (typically ~3 V forward voltage). Driving series LEDs would require the output node voltage to exceed the 40 V breakdown limit when the string voltage rises - violating absolute maximum ratings. It is intended for parallel or single-LED configurations only.
What happens if the Rext resistor is omitted?
Omitting Rext sets the output current to the factory-preset 10 mA. This is a valid operating condition specified in Table 2-4 of the datasheet and is commonly used for status indicators or low-power accent lighting where precise current control is unnecessary.
Is thermal derating linear across the full temperature range?
Yes. The -0.2 %/K coefficient applies across the full operating junction temperature range (-40 °C to +125 °C), resulting in predictable, monotonic current reduction - e.g., at 100 °C junction, output current drops to ~80 % of its 25 °C value. No discontinuities or breakpoints are specified.
Does BCR420UE6327 support reverse-polarity protection?
No. The device lacks integrated reverse-voltage protection. Applying reverse supply voltage exceeds absolute maximum ratings and may cause permanent damage. External protection (e.g., series diode or MOSFET-based circuit) must be added if reverse polarity is possible in the application.
BCR420UE6327HTSA1 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:
- 200mA
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- Lighting
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SC74-6
BCR420UE6327HTSA1 FAQ
1.How can I place an order for BCR420UE6327HTSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BCR420UE6327HTSA1 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 BCR420UE6327HTSA1 reliable?
The price and inventory of BCR420UE6327HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCR420UE6327HTSA1 is usually 5 days.
3.What payment methods are accepted for BCR420UE6327HTSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCR420UE6327HTSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCR420UE6327HTSA1?
BCR420UE6327HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCR420UE6327HTSA1 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 BCR420UE6327HTSA1?
For technical support, including BCR420UE6327HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCR420UE6327HTSA1 requirements.
6.How does Aetrix verify that BCR420UE6327HTSA1 is sourced from the original manufacturer or authorized distributors?
All BCR420UE6327HTSA1 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 BCR420UE6327HTSA1 meets industry standards.
7.What is the process for return or replacement of BCR420UE6327HTSA1?
All BCR420UE6327HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BCR420UE6327HTSA1, 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 BCR420UE6327HTSA1 part is unused and in its original packaging.
Return procedure for BCR420UE6327HTSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BCR420UE6327HTSA1 Tags
-
BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
Infineon Technologies
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
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HV9910CLG-G
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CL2N8-G
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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