BCR320UE6327HTSA1 - 250mA Linear LED Driver, 27V, SC-74-6 | Infineon
MPN: BCR320UE6327HTSA1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.33 | $0.33 |
| 10 | $0.31 | $3.10 |
| 100 | $0.27 | $27.00 |
| 500 | $0.23 | $115.00 |
| 1,000 | $0.19 | $190.00 |
| 3,000 | $0.16 | $480.00 |
BCR320UE6327HTSA1 Overview
A linear LED driver is a semiconductor device placed in series with the LED string that absorbs the excess voltage between the supply rail and the LED forward voltage, holding current constant through a built-in reference and sense transistor. Within the broader product hierarchy, the BCR320U belongs to the linear LED driver class, which sits under LED drivers, then power management ICs, then semiconductor ICs. By operating in the linear region rather than switching, the BCR320U introduces zero switching ripple onto the LED current, producing visually flicker-free output - critical for interior lighting, dashboard backlights, and indicator lamps where stroboscopic effects are unacceptable.
Key specifications include 250 mA nominal output current, a 1.4 V to 27 V input range, integrated reverse-polarity protection, and a typical negative temperature coefficient of -0.2 %/K that progressively reduces output current as junction temperature rises - a built-in thermal foldback that protects both the driver and the LED from thermal runaway. The integrated reverse-polarity MOSFET eliminates a discrete protection component, shrinking the footprint for space-constrained PCB designs.
Architecturally, the BCR320U combines an internal bandgap reference, a sense resistor, and a pass transistor monolithically, so the only external components required are the supply bypass capacitor and the LEDs themselves. The device is qualified to AEC-Q101, allowing deployment under the hood and in other harsh automotive electrical environments.
Typical applications include automotive interior lighting such as dome lights and reading lamps, instrument cluster backlighting, status and indicator LEDs in white goods, signage and channel-letter illumination, and low-power architectural accent lighting. Compared to a discrete resistor biasing scheme, the BCR320U delivers uniform brightness across multiple LEDs regardless of forward-voltage variation and significantly extends LED lifetime by limiting inrush and thermal stress.
When designing with this part, ensure adequate copper area beneath the exposed pad to keep the junction temperature within the -40 C to +150 C operating range. Place the input bypass capacitor as close as possible to the VCC pin to suppress voltage transients on long automotive wiring harnesses, and observe the maximum input voltage of 27 V including load-dump excursions.
This page combines distributor pricing tiers, AEC-Q101-grade drop-in alternatives, and practical PCB layout notes that go beyond the manufacturer datasheet to help engineers select and source the BCR320U for next-generation LED lighting designs.
Drop-in alternatives for BCR320UE6327HTSA1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
BCR321UE6327HTSA1
β Drop-Inπ Reference alternative (not in catalog)
BCR320UE6327
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
NSI25011C
β Drop-Inπ Reference alternative (not in catalog)
NSI50010YT1G
β Drop-Inπ Reference alternative (not in catalog)
BCR430UE6327HTSA1
β Drop-Inπ Reference alternative (not in catalog)
BCR320UE6327HTSA1 Maximum Ratings & Electrical Characteristics
| Product Type | Linear Constant-Current LED Driver IC |
| Number of Outputs | 1 |
| Output Current (Nominal) | 250 mA |
| Input Voltage Range | 1.4 V to 27 V |
| Topology | Linear (series regulator) |
| Dimming Control | Analog via supply voltage / no PWM (BCR320U variant) |
| Integrated Reverse-Polarity Protection | Yes (internal MOSFET) |
| Temperature Coefficient of Output Current | -0.2 %/K (typical) |
| Operating Temperature Range | -40 C to +150 C (junction) |
| Package | PG-SC74-6 (SOT-26 equivalent, 6 pins) |
| Mounting Type | Surface Mount |
| Qualification | AEC-Q101 (automotive grade) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
BCR320UE6327HTSA1 Pin Configuration
| Pin 1 | VCC β Supply voltage input (1.4 V to 27 V) |
| Pin 2 | GND β Ground reference |
| Pin 3 | NC β Not connected (per datasheet) |
| Pin 4 | NC β Not connected (per datasheet) |
| Pin 5 | NC β Not connected (per datasheet) |
| Pin 6 | OUT β Regulated 250 mA current output to LED anode |
Typical Applications
BCR320UE6327HTSA1 is suitable for 6 applications: Automotive Interior Lighting, Indicator and Status LEDs, Signage and Channel Letter Lighting, White Goods and Appliance Lighting, Industrial Status Panels and Machine Vision Lighting, Emergency and Egress Lighting.
Automotive Interior Lighting
The BCR320UE6327HTSA1 is ideal for automotive interior lighting such as dome lamps, reading lights, footwell illumination, and instrument cluster backlights where a flicker-free 250 mA constant-current source is required. AEC-Q101 qualification ensures the device survives under-hood and dashboard thermal stress across the -40 C to +125 C ambient range, while the 1.4 V to 27 V input tolerates 12 V battery cold-crank and load-dump transients. Linear topology produces zero switching ripple on the LED current, eliminating visible flicker in PWM-sensitive human-vision scenarios. Place a 100 nF bypass capacitor on VCC (pin 1) and route the LED string from pin 6 (OUT) to GND with at least 1 square cm of copper for thermal dissipation.
Recommended
Indicator and Status LEDs
For status indicators, panel-mount LEDs, and front-panel fault lamps, the BCR320UE6327HTSA1 delivers uniform brightness across multiple LEDs regardless of forward-voltage variation by regulating 250 mA through its internal bandgap reference. Unlike discrete resistor biasing - where a 100 mV forward-voltage mismatch causes significant current imbalance - the BCR320U eliminates LED-to-LED brightness variation entirely. The integrated reverse-polarity MOSFET also protects the indicator circuit against wiring errors during field installation. Recommended stack-up: 24 V supply, 100 nF input cap, BCR320U, then up to 8 mid-power LEDs in series.
Recommended
Signage and Channel Letter Lighting
Channel-letter and architectural signage applications benefit from the BCR320UE6327HTSA1's ultra-low-BOM count and flicker-free output, where each letter is typically lit by 4-8 mid-power LEDs driven by a single constant-current source. Operating from a 24 V commercial LED driver rail, the BCR320U's 27 V maximum input provides adequate headroom while its linear topology avoids the EMI that switching regulators would radiate into nearby LED control wiring. The thermal foldback at -0.2 %/K protects LEDs in enclosed signage housings that can reach 85 C ambient during summer operation.
Recommended
White Goods and Appliance Lighting
Refrigerator, oven, and washing-machine interior lighting require long-lifetime LED sources that the BCR320UE6327HTSA1's constant-current regulation supports by eliminating thermal runaway and inrush stress. The 1.4 V minimum input allows direct operation from 5 V or 3.3 V microcontroller rails in low-power task lights, while the 27 V maximum accommodates rectified 24 V appliance supplies. The reverse-polarity protection prevents field failures from miswired harnesses during assembly. Recommended design: place bypass cap within 5 mm of VCC, and keep LED trace lengths under 50 mm to minimize EMI.
Recommended
Industrial Status Panels and Machine Vision Lighting
In industrial control panels and machine-vision ring lights, the BCR320UE6327HTSA1 provides stable 250 mA illumination that does not vary with supply fluctuations, ensuring consistent camera exposure and reliable HMI visibility. The -0.2 %/K thermal foldback is particularly valuable in enclosed industrial cabinets where ambient can reach 70 C; it prevents LED overheating without requiring external thermistor circuits. The linear topology is preferred over switching drivers when the LED is colocated with sensitive analog sensor signal paths, since switching noise could couple into measurement channels.
Recommended
Emergency and Egress Lighting
The BCR320UE6327HTSA1 is well suited to emergency exit signs and egress pathway lighting that must operate reliably from battery-backed 12 V or 24 V supplies during mains failure. The 1.4 V to 27 V input range covers the full discharge curve of lead-acid backup batteries, while the integrated reverse-polarity protection prevents failure when field technicians reverse-battery-connect during maintenance. With zero flicker and 250 mA regulated drive, the BCR320U delivers consistent illumination critical for visibility during evacuation. AEC-Q101 qualification also supports installations in harsher industrial egress environments.
Recommended
Recommended Products Summary
Engineering reference data for BCR320UE6327HTSA1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BCR321UE6327HTSA1 | BCR320UE6327 | NSI25011C | NSI50010YT1G | BCR430UE6327HTSA1 |
|---|---|---|---|---|---|---|
| Package | PG-SC74-6 | PG-SC74-6 - same | PG-SC74-6 - same | SC-74-6 - same | SC-74 - same | PG-SC74-6 - same |
| Brand | Infineon | Infineon | Infineon | onsemi | onsemi | Infineon |
| Output Current (mA) | 250 | 250 | 250 | 250 | 50 | 100 |
| PWM Dimming | No (fixed output) | Yes, up to 10 kHz | No | No | No | No |
| Topology | Linear | Linear | Linear | Linear | Linear | Linear |
Key Differentiators
- Fixed 250 mA output with no external sense resistor required (vs Discrete resistor biasing scheme)
- Integrated reverse-polarity MOSFET protects against wiring errors (vs NSI50010YT1G (no reverse-polarity protection))
- AEC-Q101 automotive qualified in PG-SC74-6 package (vs NSI25011C (industrial-grade only))
Design Notes
Estimated: at VIN=24 V, VLED=9 V (3 white LEDs in series), and 250 mA load, the BCR320U dissipates (24-9) x 0.25 = 3.75 W. With PG-SC74-6 theta_JA around 220 C/W on 1 oz 1-square-inch copper, the junction rises approximately 825 C above 25 C ambient, reaching ~108 C - within the 150 C rating but leaving limited margin. For continuous 250 mA operation at VIN above 18 V, expand copper pour to at least 4 square cm or use the BCR321U with PWM dimming to reduce average dissipation.
Place the 100 nF input bypass capacitor within 5 mm of pin 1 (VCC) and use a wide GND trace on pin 2 returning directly to the supply ground. The OUT pin (6) should connect to the LED anode with a trace width of at least 0.5 mm to carry 250 mA without significant voltage drop. For automotive applications subject to load-dump, add a TVS diode rated for 33 V minimum across VCC to GND to clamp transients below the 27 V absolute-maximum rating.
Do not connect more than 7-8 white LEDs (typical Vf=3.0 V each) in series from a 24 V supply - the BCR320U needs at least 1.4 V headroom to regulate. Below this dropout the current falls out of regulation and the LEDs will be dimmer than spec. Also note that the BCR320U has no PWM dim input; if brightness control is required, choose the BCR321UE6327HTSA1 instead. Do not place the device near high-power components that could heat the junction above 150 C without derating.
Compliance Information
AEC-Q101 (automotive) qualified per Infineon datasheet. RoHS and REACH compliant per product listing. Halogen-free status not explicitly stated - left unknown.
