MBI5037 16-Channel Constant Current LED Driver With Silent Error Detection and Power Saving Modes - Macroblock - #1

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ÓMacroblock, Inc. 2008 Floor 6-4, No. 18, Pu-Ting Rd., Hsinchu, Taiwan 30077, ROC. TEL: +886-3-579-0068, FAX: +886-3-579-7534, E-mail: info@mblock.com.tw - 1 - Macroblock Preliminary Datasheet MBI5037 16-Channel Constant Current LED Driver With Silent Error Detection and Power Saving Modes December 2008, V2.00 Features l Package compatible with MBI5026 l 16 constant-current output channels Constant output current range: 3~80mA - 10~80mA @ 5V supply voltage - 3~60mA @ 3.3V supply voltage l Compulsory error detection - Data-independent full panel detection - Error detection current: 0.1mA@700ns - Individual LED open- and short-circuit detection - Leakage and short to ground diagnosis - Pre-settable threshold voltage for short-circuit detection and leakage diagnosis - Thermal protection l Power saving modes to save supply current of LED driver - Sleep mode - 0-Power mode l Excellent output current accuracy, - Between channels: <±1.5% (typ.); - Between ICs: <±3% (typ.) l Fast response to achieve uniform output current, OE (min.): 40ns (VDD=5V, IOUT=20mA) l Staggered delay of output, preventing from current surge l 30MHz clock frequency l Schmitt trigger input Product Description MBI5037 is an enhanced 16-channel constant current LED sink driver with advanced error detection functions and smart power-saving modes. MBI5037 succeeds MBI5026 and also exploits PrecisionDrive™ technology to enhance its output characteristics. Furthermore, MBI5037 uses the concept of Share-I-O™ technology to make MBI5037 package compatible with MBI5026 and extend its advanced functions, such as silent LED open circuit detection, silent LED short detection, leakage diagnosis, and temperature warning. In addition, MBI5037 features two power saving modes: sleep mode and 0-Power mode to increase the power efficiency. MBI5037 contains a 16-bit shift register and a 16-bit output latch, which convert serial input data into parallel output format. At MBI5037 output stages, sixteen regulated current output ports are designed to provide uniform and constant current sinks with small current variation between current output ports for driving LEDs within a wide range of forward voltage (VF) variations. Users may adjust the output current from 3mA to 80mA with an external resistor Rext, which gives users flexibility in controlling the light intensity of LEDs. MBI5037 guarantees to endure maximum 17V at the output ports. Besides, the high clock frequency up to 30MHz also satisfies the system requirements of high-volume data transmission. Shrink SOP GP: SSOP24L-150-0.64 Small Outline Package GF: SOP24-300-1.00 GD: SOP24-300-1.27