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PDF MBI5152 Data sheet ( Hoja de datos )
| Número de pieza | MBI5152 | |
| Descripción | 16-Channel PWM Constant Current LED Driver | |
| Fabricantes | Macroblock | |
| Logotipo |  |
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Macroblock
Preliminary Datasheet
MBI5152
16-Channel PWM Constant Current LED Driver
Features
for 1:16 Time-Multiplexing Applications
3V-5.5V supply voltage
16 constant current output channels
Constant output current range:
- 1~20mA @ 5V supply voltage
- 1~10mA @ 3.3V supply voltage
Excellent output current accuracy:
Between channels:：<±2.5％(Max.)
Between ICs: <±3％(Max.)
Built-in 8K-bit SRAM to support time-multiplexing for 1 ~ 16 scans
16-bit /14-bit color depth PWM control to improve visual refresh rate
6bit current gain，12.5%~200%
LED open detection ( Threshold voltage, 0.3V~0.6V selectable )
Integrating ghost elimination circuit
GCLK multiplier technology
Maximum DCLK frequency: 30MHz
Staggered delay of output to reduce EMI
Small Outline Package
GF: SOP244LL--320306--11.0.000
Shrink SOP
GP: SSOP24L-150-0.64
Product Description
MBI5152 is designed for LED video applications using internal Pulse Width Modulation (PWM) control with
selectable 16-bit / 14-bit color depth. MBI5152 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 1:16
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, MBI5152 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.
MBI5152 drives the corresponding LEDs to the brightness specified by image data. With MBI5152, all output
channels can be built with 16-bit color depth (65,536 gray scales). When building a 16-bit color depth video, S-PWM
technology reduces the flickers and improves the image fidelity.
Through compulsory error detection, MBI5152 detects individual LED for open-circuit errors without extra
components. Besides, integrated ghost elimination circuit eases the ghost problems. For EMI reduction, constant
current output with staggered delay is applied on each channel
Macroblock, Inc. 2013
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 - November 2013, V1.00
1 page  
MBI5152
16-Channel PWM Constant Current LED Driver
Maximum Rating
for 1:16 Time-multiplexing Applications
Characteristic
Symbol
Rating
Unit
Supply Voltage
VDD 0~7
V
Input Pin Voltage (SDI, DCLK, GCLK, LE)
VIN -0.4~VDD+0.4
V
Sustaining Voltage at OUT Port
VDS -0.5~17
V
Output Current
I OUT
+25
mA
GND Terminal Current
Power Dissipation
GF Type
(On 4 Layer PCB, Ta=25°C)* GP Type
I GND
400
1.87
PD 1.79
mA
W
Thermal Resistance
GF Type
(On 4 Layer PCB, Ta=25°C)* GP Type
R th(j-a)
66.69
69.5
°C/W
Junction Temperature
T j , max
150**
°C
Operating Ambient Temperature
Topr -40~+85
°C
Storage Temperature
ESD Rating
HBM (MIL-STD-883G
Method 3015.7, Human
Body Mode)
MM (JEDEC
EIA/JESD22-A115,
Machine Mode)
T stg
HBM
MM
-55~+150
Class 3B
(8000V)
Class C
(≧400V)
°C
-
-
*The PCB size is 76.2mm*114.3mm in simulation. Please refer to JEDEC JESD51.
** Operation at the maximum rating for extended periods may reduce the device reliability; therefore, the suggested
junction temperature of the device is under 125°C.
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.
- 5 - November 2013, V1.00
5 Page 
MBI5152
Timing Waveform
(1)
16-Channel PWM Constant Current LED Driver
for 1:16 Time-multiplexing Applications
tw (CLK)
DCLK
t SU1 t H1
t SU1
t H1
LE
SDI
SDO
t SU0 t H0
t PD0
t PD2
(2)
GCLK
OUT2n
OUT2n+1
(3)
GCLK
LE
t PD1
t DL1
tH2
vsync cmd
tSU2
- 11 -
November 2013, V1.00
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MBI5152.PDF ] | |
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