Macroblock
Datasheet
MBI5042
16-Channel SPWM Constant Current LED Driver
Features
16 constant-current output channels 16-bit color depth PWM control Scrambled-PWM technology to improve refresh rate 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: <±1.5% (typ.), and Between ICs: <±3% (typ.) Staggered delay of output, preventing from current surge Maximum data clock frequency: 30MHz Maximum gray scale clock frequency: 33MHz Refresh rate doubled by innovative rising/falling edge trigger GCLK Schmitt trigger input 3.0V-5.5V supply voltage
Small Outline Package
GF: SOP24L-300-1.00 Shrink SOP GP: SSOP24L-150-0.64
Product Description
Thin Shrink SOP
MBI5042 is designed for LED video applications using internal Pulse Width Modulation (PWM) control with selectable 16-bit color depth which features a 16-bit shift register which converts serial input data into each pixel gray scale of output port. The output current can be preset through an external resistor. Moreover, the preset current of MBI5042 can be further programmed to 64 gain steps for LED global brightness adjustment.
GTS: TSSOP24L-173-0.65
QFN
With Scrambled-PWM (S-PWM) technology, MBI5042 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. MBI5042 offloads the signal timing generation of the host controller which just needs to feed data into
GFN: QFN24L-4*4-0.5
drivers. MBI5042 drives the corresponding LEDs to the brightness specified by
image data. With MBI5042, 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.
Macroblock, Inc. 2014 Floor 6-4, No.18, Pu-Ting Rd., Hsinchu, Taiwan 30077, ROC.
February 2014, VB.02
TEL: +886-3-579-0068, FAX: +886-3-579-7534 E-mail:
[email protected]
-1-
MBI5042
Block Diagram
16-Channel SPWM Constant Current LED Driver
R-EXT
IO Regulator and DAC
VDD
GCLK
16 bit Counter
SYNC Control
LE
GND
SDI DCLK
Gray Scale Pixel
Gray Scale Pixel
Configuration Register
OUT0 OUT1
OUT14 OUT15
Comparators Comparators
Comparators Comparators
16 16
16 16
Gray Scale Pixel Gray Scale Pixel
Buffers
16 16
16-bit Shift Register (FIFO)
SDO
- 2 - February 2014, VB.02
MBI5042
16-Channel SPWM Constant Current LED Driver
Pin Configuration
GND SDI
DCLK LE
OUT0
OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7
1 2 3 4 5 6 7 8 9 10 11 12
24 VDD 23 R-EXT 22 SDO 21 GCLK 20 OUT15 19 OUT14 18 OUT13 17 OUT12 16 OUT11 15 OUT10 14 OUT9
13 OUT8
MBI5042GF/GP/GTS
MBI5042GFN
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
- 3 - February 2014, VB.02
MBI5042
16-Channel SPWM Constant Current LED Driver
Equivalent Circuits of Inputs and Outputs
GCLK, DCLK, SDI terminal
VDD
LE terminal
VDD
IN IN
SDO terminal
VDD
OUT
Maximum Rating
Characteristic
Symbol
Rating
Unit
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 Temperature
GF Type GPType GTS Type GFN Type GF Type GPType GTS Type GFN Type
VDD VIN IOUT VDS IGND
PD
Rth(j-a)
Tj,max Topr
-0.5~+7
-0.4~VDD+0.4
+45
-0.5~+17
+720 2.52 2.03 3.53 3.12 49.69 61.56 35.45 40.01
150**
-40~+85
V V mA V mA W
°C/W
°C °C
Storage Temperature
ESD Rating
Human Body Mode (MIL-STD-883G Method 3015.7)
Machine Mode (JEDEC EIA/JESD22-A115)
Tstg HBM MM
-55~+150
Class 2 (2000V ~ 3999V)
Class B (200V ~ 399V)
°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 operation 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 differe.