MBI5153

MBI5153 is designed for LED video applications using internal Pulse Width Modulation (PWM) control with selectable 14-bit / 13-bit color depth. MBI5153 features a 16-bit shift register which converts serial input data into each pixel’s gray scale of the output port. Sixteen regulated current ports are designed to provide uniform and constant current sinks for driving LEDs with a wide range of VF variations. The output current can be preset through an external resistor. The innovative architecture with embedded SRAM is designed to support up to 1:32 time-multiplexing applications. Users only need to send the whole frame data once and to store in the embedded SRAM of the LED driver, instead of sending every time when the scan line is changed. It helps to save the data bandwidth and to achieve high grayscale with very low data clock rate. With scan-type Scrambled-PWM (S-PWM) technology, MBI5153 enhances PWM by scrambling the “on” time of each scan line into several “on” periods and sequentially drives each scan line for a short “on” period. The enhancement equivalently increases the visual refresh rate of scan-type LED displays. In addition, the innovative GCLK multiplier technique doubles visual refresh rate.

MBI5153 drives the corresponding LEDs to the brightness specified by image data. With MBI5153, all output channels can be built with 14-bit color depth (16,384 gray scales). When building a 14-bit color depth video, S-PWM technology reduces the flickers and improves the image fidelity.

Through compulsory error detection, MBI5153 detects individual LED for open-circuit errors without extra components. MBI5153 equipped an innovative cross elimination function, and it solves the cross phenomenon induced by failure LEDs. Besides, integrated ghost elimination circuit eases the ghost problems. 

MBI5153 solves 6 display challenges of fine pitch LED displays :
1. Gradient dim line                                       
2. Cross pattern from a failure LED
3. Dim line at first scan line                           
4. Lower ghosting
5. Non-uniformity at low grayscales                 
6. Color shift at low grayscales

For further details, please refer to the technical article : Looking at Core Technical Standards for LED Display Drivers from LED China 2014 in "Download".

 

 

Applications: Scan-type LED Display

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No Data
NO. ITEM DETAIL
01 No. of Output Channel 16
02 Max. Sustaining Voltage 17V
03 Constant Output Current Per Channel "0.5~20mA @ 5V supply voltage; 0.5~10mA @ 3.3V supply voltage "
04 Max. Clock Frequency 30MHz
05 Output Current Accuracy-between channels <±2.5% (Max.)
06 Output Current Accuracy-between ICs <±3.0% (Max.)
07 Supply Voltage 3.0~5.5V
08 Thermal Detection YES
09 Thermal Protection YES
10 Programmable Current Gain 6-bit
11 Scrambled-PWM technology YES, Scan-type Up to 1:32
12 Constant Output Current Invariant to Load Voltage Change YES
13 Backward Compatible IC MBI5026 and MBI5030 in package
14 Color Depth PWM Control 16-bit /14-bit
15 Schmitt Trigger Input YES
16 Staggered Delay of Output YES
17 RoHS Compliant Package SOP24L/SSOP24L/QFN24L
18 Other Specification

Built-in 16K-bit SRAM to support time-multiplexing for 1 ~ 32 rows

19 Technology PrecisionDrive™
Share-I-O™
S-PWM
20 Applications Commercial LED Display
HQ LED Display
21 Major Feature Current Gain
Scan-Type S-PWM
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