BCR402WE6327HTSA1 Integrated Circuits (ICs)

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BCR402WE6327HTSA1 is a part of PMIC - LED Drivers. This device provides wide operating temperature of - 40°C to +125°C, operating with a supply voltage range from 4V to 36V and a total load current of up to 3A. It also provides protection against overvoltage and over-temperature.

The application field of BCR402WE6327HTSA1 is mainly in the design of white and high-brightness LEDs. It is widely used in a variety of commercial and industrial lighting, automotive lighting, stage lighting, and backlighting applications. The device facilitates driving of LEDs using pulse-width modulation (PWM) control and enables driving of LEDs with multiple current. It is also capable of driving Cree XHP70 and Cree X-Lamp LED packages in brightness up to 6600 lumens.

The working principle of BCR402WE6327HTSA1 revolves around the charge-pump system. It features a low-noise high-efficiency interleaved flyback converter with constant frequency and adjustable peak current control. The charge pump system can deliver the output current pulses of up to 3A at a maximum switching frequency of 250kHz. The high-efficiency constant frequency operation allows for mode change from DCM to CCM operation to prevent switching losses.

BCR402WE6327HTSA1 also provides adjustable peak current control which can be set to protect LEDs from damage due to excessive currents. The device features an on-chip temperature sensor that is used to determine the peak current limit. This feature is especially useful in automotive lighting applications where the LEDs are subjected to extreme temperature conditions.

The device comes with a soft start feature that allows for smooth turn-on of the LEDs. This avoids any inrush current and thus reduces the power consumption. The device also has an input voltage protection circuit which stops the LEDs from lighting when the input voltage is outside the specified range.

The device is capable of providing LED dimming control by varying the LED current. It employs digital programming for LED dimming control and can provide up to 8-bit PWM dimming control to achieve flicker-free dimming from 100% to 0%. The device also provides an enable pin which allows for ON/OFF control.

BCR402WE6327HTSA1 is a powerful and cost-effective solution for high-efficiency LED lighting applications. It provides wide operating temperature range and enables fast driving of high-brightness LEDs without compromising on efficiency. The adjustable peak-current protection system and analog dimming control ensures that the LEDs are always operated within the specified parameters and thus offers reliable and robust LED lighting solutions.

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