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MC34844EP

厂商:
Freescale
类别:
LED驱动器
包装:
-
封装:
QFN-EP 32 5.0SQ*1.0P0.5
无铅情况/ROHS:
无铅
描述:
LED DRIVER W/10 CH SW

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  • 参数
  • 描述
  • 文档
参数 数值
Package Description and Mechanical Drawing QFN-EP 32 5.0SQ*1.0P0.5
Leadtime (weeks) 18
Minimum Package Quantity (MPQ) 490
Number of Reflow Cycles 3
Peak Package Body Temperature (PPT)(°C) 260
POQ Container BRICK
Sample Exception Availability N
Supply Voltage (Min-Max) (V) 7 to 28
Ambient Operating Temperature (Min-Max) (°C) -40 to 105
Package Thickness (nominal) (mm) 1.000
Status Not Recommended for New Design
Budgetary Price($US) 10000 @ $1.61 each
Harmonized Tariff (US) Disclaimer 8542.39.0000
Material Type Tested Packaged Device
Moisture Sensitivity Level (MSL) 3
Number of Regulators-Boost Switching 1
Pin/Lead/Ball Count 32
Maximum Time at Peak Temperature (s) 40
MPQ Container TRAY
Device Weight (g) .05865
Interface and Input Control I2C / Parallel
Package Length (nominal) (mm) 5.000
Package Width (nominal) (mm) 5.000
REACH SVHC Freescale REACH Statement
Protection Over Temperature / Output Short to Ground / Output Current / Undervoltage Lock Out / Over Voltage Protect
Export Control Classification Number (US) EAR99
Life Cycle Description (code) NOT RECOMMENDED(DECLINING)
Micron Size (μm) .27
UL94 (plastics flammability test) V0: burning stops within 10 seconds on a vertical specimen; no drips allowed
Device Function LED Drivers
2nd Level Interconnect e4
Additional Features-Analog PWM Capable
Diagnostics I2C / Parallel
Regulator - Output Voltage 60
Part Number MC34844EP
Package Material Plastic
Preferred Order Quantity (POQ) 2450
Tape & Reel No
Description LED DRIVER W/10 CH SW
Mounting Style Surface Mount
Regulator - Output Current (A) 2.5
Application/Qualification Tier COMMERCIAL
Floor Life 168 HOURS
Halogen Free Yes
Material Composition Declaration (MCD) Download MCD Report
RoHS Certificate of Analysis (CoA) Contact Us

MC34844是一款高效率LED驱动器,用于10-27英寸显示器的LED背光驱动。MC34844的操作电压为7V~28V,能够在10个并行通道中驱动150多个LED。10个通道中的电流误差在2%的范围内,并可以通过I2C/SMbus接口进行编程。


MC34844还包括一个用于LED调光的脉宽调制(PWM)发生器。LED可以通过I2C/SMbus接口进行编程调光到256个级别中的任何一个级别,,因此可以支持高达65,000:1(256:1 PWM、256:1电流DAC)的调光比率。还可以使用外部PWM输入。多个器件可以同步PWM频率,以减少画面噪声。MC34844支持高达25kHz(100Hz ~25kHz 范围)的频率,因此降低了音频噪声。


MC34844还支持温度和光补偿回路、以及环境背光控制。


特性

  • 7V~28V的输入电压
  • 高达60V的输出电压,带有自动VOUT选择
  • 3.0A集成升压器
  • 每通道高达50mA的LED电流
  • 90%效率(DC:DC)
  • 10通道电流驱动器,±2%电流误差
  • I2C/SM总线接口
  • 8位可编程电流DAC
  • 100Hz~25,000Hz的可编程PWM频率或同步频率
  • 用户可编程过压保护
  • LED故障检测和OTP/OCP/UVLO锁定
  • 32引脚 5x5x0.8毫米TQFN无铅封装

框图

Fact Sheets
文档名称 文档类型 软件 描述
MC34844EPPDF下载 点击下载 点击下载 MC34844FS
Data Sheets
文档名称 文档类型 软件 描述
MC34844EPPDF下载 点击下载 点击下载 MC34844
Application Notes
文档名称 文档类型 软件 描述
MC34844EPPDF下载 点击下载 点击下载 AN1902
Users Guides
文档名称 文档类型 软件 描述
MC34844EPPDF下载 点击下载 点击下载 KTLEDBKLT16UG