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参数资料
| 型号： | MSL3162BT |
| 厂商： | Atmel |
| 文件页数： | 16/20页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER 16 STRING |
| 产品培训模块： | Industrial Panel Backlighting Driver ICs LED Lighting Drivers LED Driver Basics |
| 标准包装： | 2,500 |
| 系列： | Adaptive SourcePower™ |
| 拓扑： | 交直流离线开关，PWM |
| 输出数： | 16 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光，通用 |
| 类型 - 次要： | RGB，白色 LED |
| 频率： | 18MHz ~ 22MHz |
| 电源电压： | 4.5 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 供应商设备封装： | 40-TQFN（6x6） |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 85°C |
Using Multiple Atmel LED Driver-MSL3162s to Control a Single Power Supply
To use multiple MSL3162s to control a single power supply, connect the FBOx output of one MSL3162 to the FBIx input
of another MSL3162 to form a chain(Figure 6). The Efficiency Optimizer decides whether the current at the FBIx input
is less than what the FBOx output is programmed to. If the FBIx current is less than the programmed current, the FBIx
current is transferred to the FBOx output. Otherwise, the programmed current is used at FBOx. The power supply output
is, therefore, programmed to the minimum voltage required by all MSL3162s controlling it, and so all LED strings have
sufficient voltage to maintain current regulation and power supply noise rejection.
Figure 6. Cascade Multiple Atmel LED Driver-MSL3162s
to Control a Common Power Supply
The accuracy of the FBOx output current can degrade through each link of the FBIx/FBOx chain by as much as 2%.
Therefore, the maximum output voltage correction current can drop by 2% per link. Calculate the worst-case FBOx
current by the equation:
= 45 μA * ( 0 . 98 )
I FBOx ( MAX
/ MIN )
N ? 1
where I FBOx(MAX/MIN) is the worst-case (minimum) maximum FBOx output current, and N is the number of MSL3162 FBIx/
FBOx I/Os connected in series.
Take care in laying out the traces for the Efficiency Optimizer FBIx/FBOx I/Os. If the FBIx input is not used, connect it
to GND as close to the MSL3162 as possible. When routing the FBIx/FBOx signals across circuit boards, minimize the
trace length as much as possible. Do not route the traces close to other traces with large variations in voltage or current
because such traces may couple noise into the FBIx/FBOx I/Os. If these traces must be routed near noisy signals, shield
them from noise by use of ground planes or guard traces.
16
Atmel LED Driver-MSL3162
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| MSL3162-TB | 制造商:Atmel Corporation 功能描述:16-STRING RGB & WHITE LED DRIVERS WITH A - Bulk |
| MSL3163BT | 功能描述:LED照明驱动器 16Str Wht RGB Adptv Pwr Ctrl E2PROM I2 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 |
| MSL3163BT-R | 功能描述:LED照明驱动器 16Str Wht RGB Adptv Pwr Ctrl E2PROM I2 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 |
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