BCR420UE6327 - 200mA Linear LED Driver, 40V, PG-SC74-6
MPN: BCR420UE6327 ✓ AktifBCR420UE6327 Ringkasan
A linear LED driver is a constant-current regulator that absorbs the voltage difference between the supply rail and the LED string, holding forward current stable across LED binning, temperature drift, and supply variation. Linear LED drivers belong to the broader category of constant-current regulators, which themselves are a subset of power-management ICs and analog signal-chain semiconductors. Compared to switching LED drivers, linear drivers add no EMI, no switching ripple, and no inductors, but dissipate the excess voltage as heat on the die.
Key features of the BCR420UE6327 include continuous output current up to 150 mA when using a single external resistor (up to 200 mA per the manufacturer's product page), a 40 V supply rating, a micro-controller-compatible PWM input, and an internal negative temperature coefficient of about -0.2 %/K that thermally protects the LEDs and the IC without external thermistors. The PG-SC74-6 footprint is JEDEC-standard and supports reflow soldering on standard lead-free profiles.
Architecturally, the part uses a precision bandgap-derived reference and a low-side NPN pass transistor in a feedback loop that senses current through the external resistor. Because the current setting is analog and resistor-programmed, no firmware or digital interface is required. The driver therefore drops into simple stand-alone LED circuits as well as micro-controlled dimming arrangements where the digital enable pin is driven by a GPIO.
Typical applications include automotive interior and exterior lighting (dome, ambient, side-marker, and tail lamps), industrial signage and status indicators, architectural strip lighting, and white-goods display backlights. The wide voltage headroom also makes it a useful tail-light driver on 24 V commercial-vehicle buses. When designing with the BCR420UE6327, choose the RE resistor using I_LED = V_RE / R_RE, derate the dissipation budget for the worst-case VIN - V_LED drop, and respect the thermal resistance of the PG-SC74-6 land pattern. This page consolidates distributor pricing, drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet.
Alternatif penggantian untuk BCR420UE6327 — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian BCR420UE6327 (sama faktor bentuk dan footprint) — berbeda di dalam Package, Qualification, Temperature Coefficient of Output Current, Topology.
BCR421UE6327
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
BCR420U E6327 HTSA1
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
BCR402UE6327HTSA1
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
BCR430UXTSA1
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
BCR320UE6327HTSA1
✅ Drop-InKontak untuk harga
Lihat Datasheet →BCR320U E6327
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
BCR420UE6327 Rating Maksimal & Karakteristik Listrik
| Topologi | Linear constant-current LED driver |
| Jumlah Output | 1 |
| Continuous Output Current | 150 mA (external-resistor limited, up to 200 mA per product page) |
| Supply Voltage Range | Up to 40 V |
| Switch / Pass Element | Internal NPN low-side transistor |
| PWM Dimming | Up to 10 kHz (BCR421U variant; BCR420U E6327 is non-PWM) |
| Current Setting | External resistor on RE pin |
| Temperature Coefficient of Output Current | -0.2 %/K (typ) |
| Paket | PG-SC74-6 (SOT-23-6 equivalent) |
| Tipe Mounting | Surface Mount |
| Status RoHS | Compliant |
| REACH Status | Compliant (per PartGenie compliance notes) |
| Qualification | AEC-Q100 (automotive) - per Infineon product family documentation |
Konfigurasi Pin BCR420UE6327
| Pin produk 1 | RE — Current-set resistor to GND (sets I_LED = V_RE / R_RE) |
| Pin produk 2 | GND — Ground reference |
| Pin produk 3 | NC — Not connected (per datasheet) |
| Pin produk 4 | OUT — LED string low-side return |
| Pin produk 5 | NC — Not connected (per datasheet) |
| Pin produk 6 | VIN — Supply voltage (up to 40 V) |
Aplikasi Umum
BCR420UE6327 cocok untuk 6 aplikasis: Automotive Interior and Ambient Lighting, Automotive Tail and Side-Marker Lamps, Industrial 24 V Status Indicators and Signage, White-Goods and Appliance Display Backlights, Architectural and Accent LED Strip Lighting, Portable and Battery-Powered LED Indicators.
Automotive Interior and Ambient Lighting
The BCR420UE6327 fits 12 V and 24 V automotive interior LED strings because it accepts supply voltages up to 40 V, regulates current to within its -0.2 %/K negative temperature coefficient, and ships in the small PG-SC74-6 footprint that is AEC-Q100 qualified. With one external resistor it can deliver up to 150 mA continuously, enough to drive 3-5 mid-power LEDs in series for dome, footwell, ambient, and door-handle lighting. Compared to a discrete resistor-limiter, it removes bin-to-bin brightness variation and adds thermal self-protection without firmware.
Direkomendasikan
Automotive Tail and Side-Marker Lamps
Tail lamps and side markers require stable current across cold-crank and load-dump transients on the 12 V automotive bus. The BCR420UE6327's 40 V supply headroom absorbs load-dump surges, and its linear regulation means no EMI coupling back into the vehicle's radio antenna. Designers typically parallel multiple BCR420UE6327 channels, each driving one LED, and gate the PWM input of the BCR421U variant for stop-vs-tail brightness. The -0.2 %/K TC prevents LED thermal runaway in enclosed lamp housings.
Direkomendasikan
Industrial 24 V Status Indicators and Signage
In factory panels and 24 V industrial signage the BCR420UE6327 offers a robust low-side driver that survives large supply variations and noisy PLC outputs. A single SOT-23-6 part plus one resistor provides a complete LED driver channel, ideal for high-density indicator arrays on HMIs and stack lights. The negative temperature coefficient automatically derates current in hot enclosures, increasing LED lifetime compared to fixed-resistor designs.
Direkomendasikan
White-Goods and Appliance Display Backlights
Refrigerator, oven, and washing-machine display backlights typically run on 12 V or 24 V rails with continuous LED currents of 60-120 mA, exactly the BCR420UE6327's sweet spot. Its SOT-23-6 footprint fits behind small LCD or segment displays, and the lack of switching noise prevents interference with touch-sensing or RF receiver circuitry nearby. The negative TC also lets the LEDs dim gracefully as the appliance warms up during heavy use, extending service life.
Direkomendasikan
Architectural and Accent LED Strip Lighting
Architectural LED strips commonly run on 24 V constant-voltage rails, with each channel limited to 60-100 mA per string for uniform color and brightness. The BCR420UE6327 can be placed at the low-side of each segment, providing per-channel current regulation that compensates for forward-voltage variations between white or RGB LEDs. The linear topology means no audible coil whine in residential settings - a common complaint with switching drivers.
Direkomendasikan
Portable and Battery-Powered LED Indicators
Battery-powered handhelds and IoT devices often run single-cell Li-ion or 2xAA/AAA stacks between 2.5 V and 5 V, which is well within the BCR420UE6327's operating range. At these low supply voltages the dropout penalty is small, so the linear regulator dissipates little power and adds no switching noise that could disturb analog or RF portions of the same PCB. Designers can place the IC between the battery rail and a small LED indicator or a backlight LED.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk BCR420UE6327 — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | BCR421UE6327 | BCR420U E6327 HTSA1 | BCR402UE6327HTSA1 | BCR430UXTSA1 | BCR320UE6327 | BCR320U E6327 |
|---|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | PG-SC74-6 (SOT-23-6) | PG-SC74-6 (SOT-23-6) - same | PG-SC74-6 (SOT-23-6) - same | PG-SC74-6 (SOT-23-6) - same | PG-SC74-6 (SOT-23-6) - same | PG-SC74-6 (SOT-23-6) - same | PG-SC74-6 (SOT-23-6) - same |
| Max Output Current | 150 mA (continuous, up to 200 mA per product page) | 150 mA (continuous) | 150 mA (continuous) | 20-65 mA | Higher-current class (~2300 uA spec sheet) | ~250 mA class A pre-regulator | ~250 mA class A pre-regulator |
| Supply Voltage Range | Up to 40 V | Up to 40 V | Up to 40 V | Up to 40 V | Up to 40 V | Up to 40 V | Up to 40 V |
| PWM Dimming Input | No | Yes (up to 10 kHz) | No | No | No | No | No |
| Topology | Linear constant-current | Linear constant-current | Linear constant-current | Linear constant-current | Linear constant-current | Linear pre-regulator | Linear pre-regulator |
| Pinout / Footprint | PG-SC74-6 (6-pin) | PG-SC74-6 (6-pin) - drop-in | PG-SC74-6 (6-pin) - drop-in | PG-SC74-6 (6-pin) - drop-in | PG-SC74-6 (6-pin) - drop-in | PG-SC74-6 (6-pin) - drop-in | PG-SC74-6 (6-pin) - drop-in |
| Lifecycle Status | Active | Active | Active | Active (legacy) | Obsolete (per Avaq comparison page) | Active | Active |
| Single-Piece Price (approx) | USD 0.41 | USD 0.42 (similar tier) | USD 0.41 (same die) | Lower (legacy) | Higher (EOL stock) | USD 0.38 (similar tier) | USD 0.38 (same die) |
Diferensiator Kunci
- AEC-Q100 automotive qualification with internal negative temperature coefficient (vsBCR402UE6327HTSA1)
- Active production status (vsBCR430UXTSA1)
- Pin-compatible upgrade path to PWM dimming (vsBCR421UE6327)
Catatan Desain
Estimated: at VIN = 24 V, V_LED_string = 12 V (4 x 3 V white LEDs), and I_LED = 100 mA, the BCR420UE6327 dissipates (24 V - 12 V) x 0.1 A = 1.2 W. With a typical PG-SC74-6 theta_JA of ~250 C/W on a 1 square-inch copper pour, the junction rises about 300 C above ambient - too high. Either derate current, drop the supply closer to the LED string forward voltage, or use a switching pre-regulator like the BCR320UE6327 in front of the BCR420UE6327.
Place the RE resistor as close as possible to the RE pin (pin 1) and tie the GND pin directly to a ground copper pour. Keep the OUT trace short and wide; the OUT node carries the full LED current and any series inductance can produce ringing that affects the internal regulator loop. A 100 nF ceramic decoupling capacitor on VIN close to the IC is recommended.
Do not exceed 40 V on VIN even during load-dump - add a TVS clamp such as a 33 V SMAJ if the device sits behind an automotive fuse. The negative temperature coefficient of -0.2 %/K is a thermal safety feature; do not bypass it by adding a series resistor to RE. The PWM input on the BCR421U variant must not be driven above 10 kHz with slow edges, or the internal hysteresis can cause current distortion.
Informasi Konformitas
RoHS and REACH compliance per PartGenie datasheet notes; AEC-Q100 qualified per Infineon product family documentation. Halogen-free and conflict-minerals status not specified in provided web data.
