From Digi-Key, The LED driver family, BCR401, BCR402, BCR405, and the newly introduced BCR450 (coming soon) keep light emission consistent over power supply and temperature variations, liminate the effect of Vf variation, and help prevent thermal runaway in applications. We also offer low forward-voltage schottky diodes, including single-package reverse polarity protection diode arrays (RPP).
Digi-Key Part Number:
BCR401RE6327INTR-ND | BCR401RE6327INCT-ND
BCR401WE6327INTR-ND | BCR401WE6327INCT-ND
BCR401WE6327INDKR-ND | BCR401UE6327INTR-ND
BCR401UE6327INCT-ND | BCR401UE6327INDKR-ND
BCR402RE6327INTR-ND | BCR402RE6327INCT-ND
BCR402UE6327INTR-ND | BCR402UE6327INCT-ND
BCR402WE6327INTR-ND | BCR402WE6327INCT-ND
BCR402WE6327INDKR-ND | BCR405UE6327XTINTR-ND
BCR405UE6327XTINCT-ND
Features:
- Constant current adjustable from 10 mA to 60 mA, up to 500 mW power dissipation
- Current range may be extended up to 700 mA with addition of external "boost" transistor (e.g., BCX68-16)
- Selection of 18V or 40 V maximum rating across driver
- On/Off features enables PWM/FM modulation
- LED-circuit protection due to Negative-Temperature Coefficient (NTC)
Applications:
- Channel lighting
- Advertising signage
- Home/office lighting (recess lamps, pendant lamps, etc).
- Rope lighting/neon replacement
- Automotive (e.g., center high-mounted stop light "CHMSL")
Benefits:
- Efficient active current regulation, accuracy of IOUT at ±1%/V voltage variation
- Maintains consistent light emission across LED strings independent of VF, powe supply, and temperature variation
- Enables using more LEDs in one branch due to low-voltage drop compared to resistor biasing schemes
- Eliminates problems of stocking multiple bias resistor values to match incoming LED VF bins
|
