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Atmel LED Driver-MSL3085
8-string White and RGB LED Driver with Adaptive Power
Control, EEPROM, and I 2 C/SMBus Serial Interface
The MSL3085 features a 1MHz I 2 C serial interface. The interface supports
video frame-by-frame LED string intensity control for up to eight
General Description
The Atmel LED Driver-
MSL3085 compact, high-
power 8 LED strings controller
uses external MOSFETs to sink
up to 350mA per string, with
current accuracy and matching
better than ±1.5%. The
MSL3085 drives eight parallel
strings of LEDs, and offers fault
detection and management of
open and short circuit LEDs.
interconnected devices, allowing active area dimming and phase shifted
PWM timing for video displays. It includes an advanced PWM engine that
synchronizes LED timing with the video signal for reduced motion blur and
waterfall noise.
The MSL3085 adaptively controls the DC-DC converters that power the LED
strings using patented Atmel Adaptive SourcePower? technology. These
fault monitored efficiency optimizers minimize power use while maintaining
LED current accuracy, and allow up to eight interconnected devices to
automatically negotiate the optimum power supply voltage.
A unique combination of peak current control and pulse width dimming
management offers simple full-screen brightness control, versatile area
dimming, and a consistent white point. LED string current is set for each
string using a current sense (FET source) resistor. LED current is also digitally
controlled for all eight LED strings. Global string drive pulse width is adjusted
with an 8-bit global intensity register, and individual string pulse width is
modulated with 12-bit control.
The MSL3085 monitors for string open circuit, LED short circuit, loss-of-sync
and over temperature faults, and provides a hardware fault output to notify the
MCU. Detailed fault status and control are available through the serial interface.
Additionally, the MSL3085 includes an on-chip EEPROM that allows the
power-up default register settings to be customized via the serial interface.
The MSL3085 is offered in a 6 x 6 x 0.75mm, 40-pin TQFN package, and
operates over a -40°C to +105°C temperature range.
Applications
Long Life, Efficient LED Backlighting for:
? Televisions and Desktop Monitors
? Medical and Industrial Instrumentation
? Automotive Audio-visual Displays
Channel Signs
Architectural Lighting
Ordering Information
EIGHT-CHANNEL LED STRING DRIVER
2
PART
MSL3085BT
INTERFACE
I 2 C
PACKAGE
40-pin, 6 x 6 x 0.75mm TQFN
Atmel LED Driver-MSL3085
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相关代理商/技术参数
MSL3085BT-R
功能描述:LED照明驱动器 8-String White & RGB LED Drivers with Ad
RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MSL3086-IU
功能描述:LED照明驱动器 8-Str LED Driver Internal Boost Cntr
RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MSL3086-IUR
功能描述:LED照明驱动器 8-Str LED Driver Internal Boost Cntr
RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MSL3088-IU
功能描述:LED照明驱动器 8-Str LED Driver Intrnl Bst Cntr/Phas
RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MSL3088-IUR
功能描述:LED照明驱动器 8-Str LED Driver Intrnl Bst Cntr/Phas
RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MSL3162BT
功能描述:LED照明驱动器 16String RGB & White LED Drivers with A RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MSL3162BT-ET1R
制造商:Atmel Corporation 功能描述:LED DRIVER - Bulk
MSL3162BT-R
功能描述:LED照明驱动器 16String RGB & White LED Drivers with A RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N