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PDF MBI5050 Data sheet ( Hoja de datos )
| Número de pieza | MBI5050 | |
| Descripción | 16-Channel PWM Constant Current LED Driver | |
| Fabricantes | Macroblock | |
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Hay una vista previa y un enlace de descarga de MBI5050 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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Macroblock
Preliminary Datasheet
MBI5050
16-Channel PWM Constant Current LED Driver
Features
For Time-multiplexing Applications
z 3V-5.5V supply voltage
z Constant output current range: 3~45mA
- 3~45mA @ 5V supply voltage
- 3~30mA @ 3.3V supply voltage
z Backward compatible with MBI5026 and MBI5030 in package
z 16 constant current output channels
z Built-in 4K-bit SRAM to support time-multiplexing for 1 ~ 8 scans
z 16-bit /14-bit color depth PWM control
z Scan-type Scrambled-PWM technology to improve visual refresh rate
z 6-bit programmable output current gain
z Excellent output current accuracy:
Between channels: <±1.5% (typ.), and
Between ICs: <±3% (typ.),
z Staggered delay of output to reduce EMI
z Maximum data clock frequency: 30MHz
z Schmitt trigger input
Small Outline Package
GGF:FS: SOOPP2244LL-2-33060-1-1.0.000
Shrink SOP
GP: SSOP24L-150-0.64
Product Description
MBI5050 is designed for LED video applications using internal Pulse Width Modulation (PWM) control with
selectable 16-bit / 14-bit color depth. MBI5050 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. Moreover, the preset current of MBI5050 can be further programmed to 64-step for LED global
brightness adjustment.
The innovative architecture with embedded SRAM is designed to support up to 8:1 time-multiplexing applications.
User only needs 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 save the data bandwidth and achieve high grayscale
with very low data clock rate.
With scan-type Scrambled-PWM (S-PWM) technology, MBI5050 enhances Pulse Width Modulation 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. MBI5050 drives the
corresponding LEDs to the brightness specified by image data. With MBI5050, all output channels can be built with
16-bit color depth (65,536 gray scales). Each LED’s brightness can be calibrated enough from minimum to
maximum brightness with compensated gamma correction or LED deviation information inside the 16-bit image data.
When building a 16-bit color depth video, S-PWM technology reduces the flickers and improves the image fidelity.
Also, MBI5050 offloads the signal timing generation of the host controller which just needs to feed data into drivers.
©Macroblock, Inc. 2012
Floor 6-4, No.18, Pu-Ting Rd., Hsinchu, Taiwan 30077, ROC.
TEL: +886-3-579-0068, FAX: +886-3-579-7534 E-mail: [email protected]
-1-
June 2012, V1.03
1 page  
MBI5050
16-Channel PWM Constant Current LED Driver
For Time-multiplexing Applications
Maximum Rating
Characteristic
Symbol
Rating
Unit
Supply Voltage
Input Pin Voltage (SDI)
Sustaining Voltage at OUT Port
Output Current
GND Terminal Current
Power Dissipation
(On 4 Layer PCB, Ta=25°C)*
Thermal Resistance
(On 4 Layer PCB, Ta=25°C)*
GF Type
GP Type
GF Type
GP Type
VDD
VIN
VDS
IOUT
IGND
PD
Rth(j-a)
0~7
-0.4~VDD+0.4
-0.5~17
+45
720
1.87
1.79
66.69
69.5
V
V
V
mA
mA
W
°C/W
Junction Temperature
Tj,max
150**
°C
Operating Temperature
Topr -40~+85
°C
Storage Temperature
Tstg -55~+150
°C
*The PCB size is 76.2mm*114.3mm in simulation. Please refer to JEDEC JESD51.
Note: The performance of thermal dissipation is strongly related to the size of thermal pad, thickness and layer
numbers of the PCB. The empirical thermal resistance may be different from simulative value. User should plan for
expected thermal dissipation performance by selecting package and arranging layout of the PCB to maximize the
capability.
** Operation at the maximum rating for extended periods may reduce the device reliability; therefore, the suggested
operation temperature of the device is under 125°C.
- 5 - June 2012, V1.03
5 Page 
MBI5050
(4)
16-Channel PWM Constant Current LED Driver
For Time-multiplexing Applications
- 11 -
June 2012, V1.03
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MBI5050.PDF ] | |
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