Macroblock
Features
16 constant-current output channels
12-bit grayscale PWM control
Preliminary Datasheet
MBI5031
Small Outline Package
16-Channel PWM-Embedded LED Driver
Backward compatible with MBI5026 in package
Scrambled-PWM technology to improve refresh rate
Open-Circuit Detection to detect individual LED errors
8-bit programmable output current gain
Constant output current range:
5
~
45mA at 3.3V supply voltage
5
~
60mA at 5.0V supply voltage
Output current accuracy:
between channels: <±3% (max.), and
between ICs: <±6% (max.)
Staggered output delay
Maximum data clock frequency: 25MHz
Schmitt trigger input
3.0V-5.5V supply voltage
GF: SOP24-300-1.00
Product Description
MBI5031 is designed for LED video applications using internal Pulse Width Modulation (PWM) control with 12-bit
gray scales. MBI5031 features a 16-bit shift register which converts serial input data into each 12-bit pixel gray scale
of output port. At MBI5031 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 MBI5031 can be further programmed up or down to 128 gain steps
for LED global brightness adjustment.
With Scrambled-PWM (S-PWM
TM
) technology, MBI5031 enhances Pulse Width Modulation by scrambling the “on”
time into several “on” periods. The enhancement equivalently increases the visual refresh rate. When building a
12-bit gray scale video, S-PWM™ reduces the flickers and improves the fidelity. MBI5031 offloads the signal timing
generation of the host controller which just needs to feed data into drivers. MBI5031 drives the corresponding LEDs
to the brightness specified by image data. With MBI5031, all output channels can be built with 12-bit color depths
(4,096 gray scales).
Macroblock,
Inc. 2006
Floor 6-4, No.18, Pu-Ting Rd., Hsinchu, Taiwan 30077, ROC.
TEL: +886-3-579-0068, FAX: +886-3-579-7534 E-mail:
info@mblock.com.tw
-1-
March 2006, V1.00
MBI5031
Terminal Description
Pin Name
GND
SDI
DCLK
LE
Function
16-channel PWM-Embedded LED Driver
Pin Configuration
GND
SDI
DCLK
LE
OUT0
OUT1
OUT2
OUT3
OUT
4
OUT
5
OUT6
OUT7
1
2
3
4
5
6
7
8
9
10
11
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
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
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
SDO
R-EXT
VDD
Maximum Ratings
Characteristic
Supply Voltage
Input Pin Voltage (SDI)
Output Current
Sustaining Voltage at OUT Port
Data Clock Frequency*
Gray Scale Clock Frequency
GND Terminal Current
Power Dissipation
(On PCB, Ta=25°C)
Thermal Resistance
(On PCB, Ta=25°C)
Operating Temperature
Storage Temperature
*
Supply Voltage is 5V.
GF Type
GF Type
Symbol
V
DD
V
IN
I
OUT
V
DS
F
DCLK
F
GCLK
I
GND
P
D
R
th(j-a)
T
opr
T
stg
Rating
7
-0.4 ~ V
DD
+ 0.4
+60
17
+25
+8
+1000
2.39
52.37
-40 ~ +85
-55 ~ +150
Unit
V
V
mA
V
MHz
MHz
mA
W
°C/W
°C
°C
-3-
March 2006, V1.00
MBI5031
Electrical Characteristics (V
DD
= 5.0V)
Characteristics
Supply Voltage
Sustaining Voltage at OUT
Ports
Symbol
V
DD
V
DS
I
OUT
Output Current
I
OH
I
OL
Input Voltage
“H” level
“L” level
V
IH
V
IL
I
OH
V
OL
V
OH
dI
OUT
%/dV
DS
%/dV
DD
V
DS,TH
R
IN
(down)
I
DD
(off) 1
Supply
Current
“On”
“Off”
I
DD
(off) 2
I
DD
(off) 3
I
DD
(on) 1
I
DD
(on) 2
R
ext
= Open,
R
ext
= 920Ω,
R
ext
= 460Ω,
R
ext
= 920Ω,
R
ext
= 460Ω,
-
OUT0
~
OUT15
16-channel PWM-Embedded LED Driver
Condition
Min.
4.5
-
5
-
-
0.7*V
DD
GND
-
-
4.6
R
ext
= 920Ω
-
-
-
-
LE
OUT0
~
OUT15
OUT0
~
OUT15
OUT0
~
OUT15
OUT0
~
OUT15
OUT0
~
OUT15
Typ.
5.0
-
-
-
-
-
-
-
-
-
-
±0.1
±1.0
0.15
430
3.5
7.1
7.5
11.0
11.5
Max.
5.5
17.0
60
-1.0
1.0
V
DD
0.3*V
DD
0.5
0.4
-
±3
-
-
0.20
700
5.3
10.7
11.3
16.5
17.3
Unit
V
V
mA
mA
mA
V
V
µA
V
V
%
%/V
%/V
V
KΩ
Refer to “Test Circuit for
Electrical Characteristics”
SDO
SDO
Ta = -40~85ºC
Ta = -40~85ºC
V
DS
= 17.0V
I
OL
= +1.0mA
I
OH
= -1.0mA
I
OUT
= 10.5mA
V
DS
= 1.0V
Output Leakage Current
Output Voltage
Current Skew
Output Current vs.
Output Voltage Regulation
Output Current vs.
Supply Voltage Regulation
LED Open Detection
Threshold
Pull-down Resistor
SDO
V
DS
within 1.0V and 3.0V,
R
ext
=460Ω@21mA
V
DD
within 4.5V and 5.5V,
R
ext
=460Ω@21mA
-
200
= Off
= Off
= Off
= On
= On
-
-
-
-
-
mA
-5-
March 2006, V1.00
Microcontroller MCU
京公网安备 11010802033920号
EEWORLD
