CAT4004A: LED Driver, 4-Channel, with 32 Dimming Levels and Reset

The CAT4004A provides four matched low dropout current sources to drive LEDs. The CAT400XA uses an external resistor RSET to set the current in the LED channels. 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 inputs supports 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 (50 mV at 20 mA) current sinks. The device is available in the tiny 8-pad UDFN 2 mm x 2 mm package with a max height of 0.55 mm.

特性
  • Low Dropout Driver 50 mV at 20 mA
  • Dimming via 1-wire EZDim Interface
  • 2 and 4 LED Current Sinks with Tight Matching
  • 32 Dimming Levels
  • No Switching Noise
  • Shutdown Current less than 1 µA
  • LED Current set by External Resistor
  • Thermal Shutdown Protection
  • These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS Compliant
优势
  • Can drive LEDs at lower supply voltage VIN
  • Higher Resolution Dimming
应用
  • LCD Display Backlight
  • Digital Still Cameras
  • Cellular Phones
  • Handheld Devices
数据表 (1)
Document TitleDocument ID/SizeRevisionRevision Date
Constant Current LED Driver with 32 Dimming Levels and RsetCAT4004A/D (165.0kB)2
封装图纸 (1)
Document TitleDocument ID/SizeRevision
UDFN8, 2x2517AW (34.0kB)A
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)
CAT4004AHU2-GT3ActivePb-free Halide freeUDFN-8517AW1Tape and Reel3000$0.4
订购产品技术参数
ProductVI Max (V)IO Max (mA)LEDs in Series, Max #LEDs in Parallel, Max #
CAT4004AHU2-GT35.54014
Constant Current LED Driver with 32 Dimming Levels and Rset (165.0kB) CAT4004A
UDFN8, 2x2 CAT25160