BD6085GUL-E2

Voltage - Output:	5.1V
Base Part Number:	BD608*
Supplier Device Package:	36VCSP50L3
Package / Case:	35-VFBGA
Mounting Type:	Surface Mount
Operating Temperature:	-35°C ~ 85°C (TA)
Applications:	Backlight
Dimming:	--
Frequency:	900kHz
Current - Output / Channel:	30mA
Series:	--
Voltage - Supply (Max):	5.5V
Voltage - Supply (Min):	2.7V
Number of Outputs:	7 + 4LDOs
Internal Switch(s):	Yes
Topology:	Switched Capacitor (Charge Pump)
Type:	DC DC Regulator
Part Status:	Active
Packaging:	Tape & Reel (TR)

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IntroductionThe BD6085GUL-E2 is a light-emitting diode (LED) driver integrated circuit (IC) developed by ROHM Semiconductor. It is a customizable system-on-chip (SoC) designed to drive LEDs in a wide range of applications including lighting, consumer, automotive and industrial applications. The SoC incorporates advanced analog circuitry and digital signal processing (DSP) to provide precise and reliable lighting performance. The BD6085GUL-E2 has a wide input voltage range of 4.25V to 18V and can efficiently drive LEDs up to 3A.Application FieldThe BD6085GUL-E2 offers many advantages for LED drivers, including high-accuracy dimming, reduced power dissipation, wide dynamic range, and excellent surge protection for extreme environmental conditions. The flexible and highly configurable nature of the BD6085GUL-E2 allows it to be used in a wide range of LED applications such as LED backlighting for LCD displays, LED decoration/architectural lighting, LED automotive lamps, LED signs and billboards, LED flashlights, and LED security lights. The SoC is also suitable for incandescent, halogen, and xenon lighting applications.The BD6085GUL-E2 is designed to reduce the space and power consumption of LED lighting systems while providing superior lighting performance. It integrates a high-efficiency switching regulator, logic circuitry, and current sensing circuitry, thus eliminating the need for external components and enabling more compact solutions. This makes the device suitable for applications where space and energy saving are primary design considerations.Working PrincipleThe BD6085GUL-E2 operates on a hysteretic current-mode architecture and provides a high-performance, easy-to-use lighting control solution. The device operates in either a buck or boost mode and can deliver output current ranging from 20mA to 3000mA to drive multiple LED strings. The built-in current measurement circuit allows for accurate, real-time monitoring of the output current, ensuring the LED strings remain within their specified current rating. The on-chip pulse-width modulation (PWM) controller regulates the output current by modulating the duty cycle of the output frequency.The PWM dimming control can be linear or logarithmic depending on the application and can be adjusted from 0 to 100%. The device also features a wide input voltage range of 4.25V to 18V and a wide output voltage range of 1.8V to 5V, making it suitable for a variety of applications. Additionally, the device can be modified to offer various levels of thermal protection, thus preventing damage to the components due to excessive temperatures.ConclusionThe BD6085GUL-E2 is a high-performance, low-power SoC designed to drive LEDs in a range of applications. It offers advanced functionalities such as high-accuracy dimming, wide dynamic range control, accurate current sensing, and built in surge protection, making it an ideal solution for LED lighting systems. Moreover, the device is highly configurable and features an extensive input and output voltage range, thus enabling it to be used in a variety of applications.

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