Da Vinci | Recommended for 1.2mm~3.9mm pixel pitches LED Display
 

Product Specifications:

LED Type: Common Anode

Scan Type: Typical

No. of Output Channel: 16

Output Current per Channel: 1mA~20mA

Sustaining Output Voltage: 7V

Excellent Output Current Accuracy Between Channels: <±2％ (typ.)

Excellent Output Current Accuracy Between ICs: <±2％ (typ.)

Scan Design: Up to 32 scans

S-PWM: 13/14/15/16-bit

Da Vinci Premium Features: Adaptive Refresh / Low-gray Refresh 2x-4x

Solving 7 Common Problems: Ghosting / High Contrast Interference / Color Shift / Non-uniformity (IC Controlled) / Dim Line at the 1st Scan Line / Gradient Dim Line / Dead Pixel Isolation

Intelligent Power Saving

IC Package: QFN24 / SSOP24

Recommended Pixel Pitch (mm): P1.2~P3.9

Product Description:
MBS7253 is a LED driver designed specifically for LED full-color display applications. Users can utilize the pulse width modulation (PWM) feature with 16/15/14/13-bit precision to achieve grayscale control. It incorporates a 16-bit shift register to convert serial input data into grayscale levels for each output channel. The 16 constant-current output channels of MBS7253 are unaffected by the output terminal load voltage, providing consistent and constant output currents. Users can adjust the output current of each stage of MBS7253 by selecting external resistors of different resistance values. Additionally, users can adjust the drive current of the overall LED with 256 levels via programmable current gain adjustment.

The innovative architecture of MBS7253's built-in SRAM supports up to 16-scan LED scanning screens. Users only need to send a complete frame data once and store it in the SRAM of the LED driver chip. This method not only saves data bandwidth but also achieves high grayscale effects at very low data clock frequencies. Through Scrambled-PWM (S-PWM) technology, MBS7253 enhances the PWM feature by dispersing the on-time into several shorter on-times, thus increasing the visual refresh rate of the scanning screen. Furthermore, MBS7253 utilizes GCLK's multiplier technology to double the visual refresh rate without increasing the GCLK frequency.

When constructing a full-color display with 16-bit grayscale, S-PWM can be used to reduce screen flicker. Additionally, the controller only needs to provide data to MBS7253. MBS7253 can adjust the brightness of each corresponding LED based on the input image data, and it can display 16-bit (16,384 grayscale) color variations for each output channel.

Through real-time error detection, MBS7253 can independently detect whether each LED is in an open circuit state without the need for additional external components. Its innovative cross-elimination function addresses the issue of surrounding lamp point errors caused by individual LED defects. Moreover, the built-in blanking circuit of MBS7253 significantly reduces ghosting effects, and the built-in high-contrast interference optimization function enhances display contrast. The low-gray 2x~4x refresh feature of MBS7253 effectively resolves flicker issues caused by insufficient low-gray refresh.