RP2404

Preliminary RP2404 4 Channels Pulse Dimming Current Source for WLED Driver General Description Features The RP2404 low-dropout bias supply for white LEDs is a high-performance alternative to the simple ballast resistors used in conventional white LED designs. The RP2404 uses an internal resistor to set the bias current for 4LEDs, which are matched to 2%. The RP2404's advantages over ballast resistors include much lower bias variation with supply voltage variation, significantly lower dropout voltage , and 2% in some applictions, significantly improved efficiency. Low 50mV Dropout at 20mA 16 Steps Pulse Dimming 2% LED Current Matching 2.7V to 4.5V Supply Voltage Range Thermal Shutdown Protection RP2404 is available in WQFN 3X3-16L package. It provides the best backlighting solution with high efficiency and smallest board space for portable application. Applications Ordering Information Camera Phone, Smart Phone, MP3 White LED Backlighting RP2404 Package Type QW: WQFN 3X3-16L Operating Temperature Range G: Green ( Halogen Free with Commercial Standard Note : Richpower Green products are : RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. Marking Information For marking information, contact our sales representative directly or through a Richpower distributor located in your area. Pin Configurations (TOP VIEW) NC NC NC LED1 RP2404-00P Jan 2010 16 15 14 13 NC 1 NC 2 NC 3 NC...