CAT4004B: LED Driver, Constant Current Programmable with 32 Dimming Levels

The CAT4003B and CAT4004B provide respectively three and four matched low dropout current sources to drive LEDs. The CAT400XB requires no external RSET resistor. The LED current is internally set to 25 mA when the device is first enabled. Each LED channel includes an individual control loop allowing the device to handle a wide range of LED forward voltages while still maintaining tight current matching. The EN/DIM logic input supports the device enable and a digital dimming interface for setting the LED channel current with 32 linear dimming levels. LEDs can be powered directly from a Lithium-ion battery due to the low dropout (75 mV at 20 mA) current sinks. Package options are available in the 4-channel tiny 8-pad UDFN 2 mm x 2 mm with a max height of 0.55 mm, and 3- channel in the 6-lead TSOT-23, TSOP and SC-70.

特性
  • Low Dropout Driver 75 mV at 20 mA
  • Dimming via 1-wire EZDimTM Interface
  • 3, 4 LED Current Sinks with Tight Matching
  • 32 Dimming Levels
  • No Switching Noise
  • Shutdown Current less than 1 µA
  • 25 mA Max LED Current per Channel
  • Thermal Shutdown Protection
优势
  • Can drive LEDs at lower VIN
  • higher resolution dimming
应用
  • LCD Display Backlight
终端产品
  • Mobile Phones
  • Digital Still Cameras
软件 (1)
Document TitleDocument ID/SizeRevisionRevision Date
ON Semiconductor Integrated Development Environment (IDE)WDK1.0GEVK_Software (351925kB)0
封装图纸 (1)
Document TitleDocument ID/SizeRevision
UDFN8, 2x2517AW (34.0kB)A
数据表 (1)
Document TitleDocument ID/SizeRevisionRevision Date
LED Driver ,Constant Current Programmable, with 32 Dimming LevelsCAT4003B/D (178.0kB)2
评估板文档 (5)
Document TitleDocument ID/SizeRevisionRevision Date
WDK1.0GEVK Docking Station Bill of Materials ROHS CompliantWDK1.0GEVK_Docking_Station_BOM_ROHS.rev0 (49kB)0
WDK1.0GEVK Docking Station SchematicWDK1.0GEVK_Docking_Station_Schematic.rev0 (231kB)0
WDK1.0GEVK Wearable Development Kit SchematicWDK1.0GEVK_Wearable_Development_Kit_Schematic.rev0 (614kB)0
WDK1.0GEVK Wearable Development Kit User's manualWDK1.0GEVK_Users_Manual.pdf (5241kB)2
WDK1.0GEVK Wearable Reference Design Bill of Materials ROHS CompliantWDK1.0GEVK_Wearable_Reference_Design_BOM_ROHS.rev0 (53kB)0
评估板与开发工具
产品状况Compliance简短说明
WDK1.0GEVKActiveWearable Reference Design and Development Kit
产品订购型号
产品状况Compliance封装MSL*容器预算价格 (1千个数量的单价)
CAT4004BHU2-GT3ActivePb-free Halide freeUDFN-8517AW1Tape and Reel3000$0.3867
订购产品技术参数
ProductVI Max (V)IO Max (mA)LEDs in Series, Max #LEDs in Parallel, Max #
CAT4004BHU2-GT35.55014
LED Driver ,Constant Current Programmable, with 32 Dimming Levels (178.0kB) CAT4004B
WDK1 WDK1.0GEVK
WDK1 WDK1.0GEVK
WDK1 WDK1.0GEVK
WDK1 WDK1.0GEVK
WDK1 WDK1.0GEVK
WDK1 WDK1.0GEVK
UDFN8, 2x2 CAT25160