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| 型号： | MSL1060AW |
| 厂商： | Atmel |
| 文件页数： | 17/20页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER 6 STRING |
| 产品培训模块： | Industrial Panel Backlighting Driver ICs LED Lighting Drivers LED Driver Basics |
| 标准包装： | 2,000 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 6 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光，通用 |
| 类型 - 次要： | RGB，白色 LED |
| 频率： | 990kHz ~ 1.21MHz |
| 电源电压： | 4.75 V ~ 36 V |
| 输出电压： | 48V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-WQFN 裸露焊盘 |
| 供应商设备封装： | 24-TQFN（5x5） |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 85°C |
Atmel LED Driver-MSL1060
6-string PWM LED Driver with Digitally Compensated, 1.1MHz,
48V Boost Regulator and ±1.5% LED String Current Balance
Boost Regulator
The MSL1060 includes a built-in boost regulator that
supplies voltage to the LEDs. The boost output voltage
ranges from the input voltage up to 48V. The boost
regulator generates the voltage at the top (anode
end) of each parallel LED string (Figure 15, Figure 16)
anywhere between the boost input voltage and 48V.
The voltage is automatically set by the MSL1060 such
that the LED string with the highest forward voltage
remains above the minimum voltage required to ensure
LED current accuracy and matching.
The boost regulator is compensated internally using
digital control. This reduces the number of external
components and allows the control system to save the
operating point during the PWM off time, minimizing
the required recovery at LED turn on. The current mode
regulation system operates at a fixed 1.1MHz switching
frequency for easy control of noise. The high switching
frequency allows for a small external inductor and
capacitors, reducing size and cost. The switch current
is internally limited to 2A to prevent overstress in the
event a boost regulator overload condition.
For maximum power efficiency, ensure that the minimum
forward voltage of a series LED string is greater than
the maximum input voltage to the boost regulator. The
boost regulator by nature includes a DC path through the
inductor and rectifier to the boost output voltage, and,
therefore, the MSL1060 cannot control the LED voltage
lower than the input voltage. If the series LED string
voltage is less than the input voltage, the boost regulator
turns off and the voltage at the anode end of the string is
approximately the input voltage, and so the current sink
outputs STR0 to STR5 drop the difference between the
string forward voltage and the input voltage. Any increase
in voltage across current sink outputs STR0 to STR5
reduces power efficiency.
Atmel LED Driver-MSL1060
Fault Management
The MSL1060 includes comprehensive fault detection
circuitry. The MSL1060 automatically detects and
corrects for open circuit LED strings, short circuit LEDs,
boost regulator overload, and die over-temperature
faults. The open-drain FLTB output indicates faults by
sinking current to GND. Reset faults by cycling the EN
input low and then high.
LED String Faults
If an open or short circuit LED string fault occurs, the
MSL1060 automtatically disables the faulty LED string,
and asserts the active-low, open-drain FLTB output to
alert the system of the fault.
Die Over-temperature Fault
If the MSL1060 detects die over-temperature (135°C),
it turns-off until the die cools. The MSL1060 restarts
automatically when the die is cooled by 15°C, allowing
control by the EN and PWM inputs.
17
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MSL1060AW-R | 功能描述:LED照明驱动器 6 Str PWM w Digtl 1.1MHz 48VBoost 1.5% 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 |
| MSL1061 | 制造商:Atmel Corporation 功能描述:LED DRVR 72Segment 5V/9V/12V/15V/18V/24V 28-Pin TQFN |
| MSL1061AV | 功能描述:LED照明驱动器 6StrLED Dvr Dgtl 1.1MHz 48V r 1.5% 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 |
| MSL1061AV-R | 功能描述:LED照明驱动器 6Str LED Dvr Dgtl 1.1MHz 48V r 1.5% 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 |
| MSL1064 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:6-string PWM LED Driver with Digitally Compensated, 1.1MHz, 48V Boost Regulator, ±1.5% Current Balance, I2C Interface |
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