MBI5038数据手册Macroblock中文资料规格书

描述 Description

MBI5038 is an enhanced 16-channel constant current LED sink driver with advanced error detection functions and the smart power-saving mode.
MBI5038 provides “compulsory silent error detection”. Once the dedicated command is issued, all of the current output ports will be turned on in about 700ns interval with small current. The image will not be impacted since the turn-on duration and current are so small. MBI5038 may detect all of the current output ports and report the LED error status without comparing original data. Moreover, the settable threshold voltages for short-circuit detection and leakage diagnosis may comply with the variation of different LED forward voltage. Additionally, to ensure the system reliability, MBI5038 is built with thermal error flag to prevent IC from over temperature (160°C).
MBI5038 also features the power saving mode: 0-Power mode. This mode reduces IDD of MBI5038 to 150uA to save the power. For the power saving purposes, MBI5038 is especially designed to save the supply current of LED drivers when most LEDs on LED traffic signs and message signs are usually turned off.
In addition, MBI5038 also allows users to adjust the output current level by setting a programmable configuration code. The code is sent into MBI5038 via the pin SDI. The falling edge of LE would latch the code in the shift register into a built-in 16-bit configuration register, instead of the output latch. The gain code would affect the voltage at the terminal REXT and control the output current regulator. The output current can be adjusted finely by a gain ranging from 12.5% to 200% in 64 steps.

特性 Features

·01 No. of Output Channel ：16
·02 Max. Sustaining Voltage ：17V
·03 Constant Output Current Per Channel ：3~45mA @ 5V supply voltage; 3~30mA @ 3.3V supply voltage; 3~25mA @ 5V/3.3V supply voltage in mSSOP(GM) package
·04 Max. Clock Frequency ：35MHz
·05 Output Current Accuracy-between channels ： <±1.5% (typ.)
·06 Output Current Accuracy-between ICs ： <±3% (typ.)
·07 Fast Response of Output Current,/OE (min.) ：40ns
·08 Supply Voltage ：3.0~5.5V
·09 Error Detection ：In-message error detection  - Both open-circuit and short-circuit LEDs can be detected  - On-the-fly error detection  - Data-in, error-out; both errors are merged and coded with zerosCompulsory error detection - Full panel, data independent - Silent error detection with 0.25mA in 700ns
·10 Thermal Detection ：YES
·11 Thermal Protection ：YES
·12 Programmable Current Gain ：64-step, from 12.5% to 200%
·13 Constant Output Current Invariant to Load Voltage Change ：YES
·14 Schmitt Trigger Input ：YES
·15 Staggered Delay of Output ：YES
·16 RoHS Compliant Package ：SOP24L/ SSOP24L/ mSSOP24L
·17 Other Specification ：Settable threshold voltage for LED short-circuit detection
·18 Technology ：Share-I-O™ /PricisionDrive™
·19 Applications ：一般LED显示屏/交通显示屏/ VMS
·20 Major Feature ：Error Detection /Current Gain /Power-Saving