Macroblock
Features
16 constant-current output channels
16-bit color depth PWM control
Datasheet
MBI5045
n
16-Channel SPWM Constant Current LED Driver
with Low Knee Voltage
Scrambled-PWM technology to improve refresh rate
Compulsory open circuit detection to detect individual LED errors
-Full panel, data independent
-Silent error detection with 0.1mA
6-bit programmable output current gain
Constant output current range: 2~45mA
-2~ 45mA at 5.0V supply voltage
-2~30mA at 3.3V supply voltage
Output current accuracy:
-Between channels: <±3% (typ.), and
-Between ICs: <±3% (typ.)
Staggered delay of output, preventing from current surge
Maximum data clock frequency: 30MHz
Schmitt trigger input
3.0V-5.5V supply voltage
Product Description
MBI5045 is designed for LED video applications using internal Pulse Width Modulation (PWM) control with 16-bit
color depth which features a 16-bit shift register to convert serial input data into each pixel gray scale of output port.
Also, the function is a 16-channel constant current LED driver with V
DS
=0.2V @ I
OUT
=20mA, which is excellent
compared to the conventional design. MBI5045 is dedicated to lowering power consumption in LED video display
application. The low knee voltage (LKV) design makes MBI5045 work at a constant output current with low V
DS
and
still guarantee PrecisionDrive™ feature. The output current can be preset through an external resistor. Moreover,
the preset current of MBI5045 can be further programmed to 64 gain steps for LED global brightness adjustment.
With Scrambled-PWM (S-PWM) technology, MBI5045 enhances Pulse Width Modulation by scrambling the “on”
time into several “on” periods. The enhancement equivalently increases the visual refresh rate. When building a
16-bit color depth video, S-PWM reduces the flickers and improves the fidelity. MBI5045 offloads the signal timing
generation of the host controller which just needs to feed data into drivers. MBI5045 drives the corresponding
brightness of LEDs by specifying image data. With MBI5045, all output channels can be built with 16-bit color depth
(65,536 gray scales). Each LED’s brightness can be calibrated with the compensated gamma correction or LED
deviation information inside the 16-bit image data.
MBI5045 provides a silent error detection which detects LED open circuit error and the execution won’t be observed.
Macroblock,
Inc. 2015
6F-4, No.18, Pu-Ting Rd., Hsinchu, Taiwan 30072, R.O.C.
TEL: +886-3-579-0068, FAX: +886-3-579-7534 E-mail:
info@mblock.com.tw
-1-
September 2015, VA.00
MBI5045
Pin Configuration
GND 1
SDI 2
DCLK 3
LE 4
OUT 0 5
OUT 1 6
OUT 2 7
OUT 3 8
OUT 4 9
OUT 5 10
OUT 6 11
OUT 7 12
24
23
22
21
20
19
18
17
16
15
14
13
VDD
R-EXT
SDO
GCLK
OUT15
OUT14
OUT13
OUT12
OUT11
OUT10
OUT9
OUT8
16-Channel SPWM Constant Current LED
Driver
with Low Knee Voltage
MBI5045GP
Terminal Description
Pin Name
GND
SDI
DCLK
LE
Function
Ground terminal for control logic and current sink
Serial-data input to the shift register
Clock input terminal used to shift data on rising edge and carries
command information when LE is asserted.
Data strobe terminal and controlling command with DCLK
OUT0
~
OUT15
Constant current output terminals
GCLK
SDO
R-EXT
VDD
Gray scale clock terminal
Clock input for gray scale. The gray scale display is counted by gray
scale clock comparing with input data.
Serial-data output to the receiver-end SDI of next driver IC
Input terminal used to connect an external resistor for setting up output
current for all output channels
3.3V/5V supply voltage terminal
September 2015, VA.00
-3-
MBI5045
16-Channel SPWM Constant Current LED
Driver
with Low Knee Voltage
LE terminal
VDD
Equivalent Circuits of Inputs and Outputs
GCLK, DCLK, SDI terminal
VDD
IN
IN
SDO terminal
VDD
OUT
Maximum Rating
Characteristic
Supply Voltage
Input Pin Voltage (SDI)
Output Current
Sustaining Voltage at OUT Port
GND Terminal Current
Power Dissipation
(On PCB, Ta=25°C)*
Thermal Resistance
(On PCB, Ta=25°C)*
Junction Temperature
Operating Ambient Temperature
Storage Temperature
ESD Rating
Human Body Mode
(MIL-STD-883G Method 3015.7)
Machine Mode
(JEDEC EIA/JESD22-A115)
GPType
GP Type
Symbol
V
DD
V
IN
I
OUT
V
DS
I
GND
P
D
R
th(j-a)
T
j
,
max
T
opr
T
stg
HBM
MM
Rating
7
-0.4~V
DD
+0.4
+45
17
+720
1.95
69.50
150**
-40~+85
-55~+150
Class 3A
(4000V~7999V)
Class C
(≧400V)
Unit
V
V
mA
V
mA
W
°C/W
°C
°C
°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. Users should plan for
expected thermal dissipation performance by selecting package and arranging layout of the PCB to maximize the
capability.
September 2015, VA.00
-4-
stm32/stm8
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