Macroblock
Features
3V-5.5V supply voltage
16 constant current output channels
Constant output current range:
- 0.5~20mA @ 5V supply voltage
- 0.5~10mA @ 3.3V supply voltage
Excellent output current accuracy:
Between channels:：<±2.5％(Max.)
Between ICs: <±3％(Max.)
Preliminary Datasheet
MBI5153
16-Channel PWM Constant Current LED Driver
for 1:32 Time-Multiplexing Applications
Shrink SOP
GP: SSOP24L-150-0.64
Built-in 16K-bit SRAM to support time-multiplexing for 1 ~ 32 scans
14-bit /13-bit color depth PWM control to improve visual refresh rate
6bit current gain，12.5%~200%
LED failure isolation
-LED failure induced cross elimination
LED open detection
Integrating ghost elimination circuit
GCLK multiplier technology
Maximum DCLK frequency: 30MHz
Quad Flat No-leads
GFN: QFN24L-4x4-0.5
Product Description
MBI5153 is designed for LED video applications using internal Pulse Width Modulation (PWM) control with
selectable 14-bit / 13-bit color depth. MBI5153 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 V
F
variations. The output current can be preset through
an external resistor. The innovative architecture with embedded SRAM is designed to support up to 1:32
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, MBI5153 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.
MBI5153 drives the corresponding LEDs to the brightness specified by image data. With MBI5153, all output
channels can be built with 14-bit color depth (16,384 gray scales). When building a 14-bit color depth video, S-PWM
technology reduces the flickers and improves the image fidelity.
Through compulsory error detection, MBI5153 detects individual LED for open-circuit errors without extra
components. MBI5153 equipped an innovative cross elimination function, and it solves the cross phenomenon
induced by failure LEDs. Besides, integrated ghost elimination circuit eases the ghost problems.
Macroblock,
Inc. 2014
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
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May 2014, V1.00
MBI5153
Block Diagram
16-Channel PWM Constant Current LED Driver
for 1:32 Time-multiplexing Applications
OUT0
OUT
1
OUT14
OUT15
R-EXT
I
O
Regulator
Pre-charge
Circuit
16-bit error status
Output Buffers
Digital to
analog
converter
Comparators
Comparators
Comparators
Comparators
GCLK
14-bit
Counter
Control
Unit
16
Configuration
Register
16
16
16
16
LE
GND
16K-bit
SRAM Buffers
16
SDI
DCLK
Figure 1
16
SDO
16-bit Shift Register (FIFO)
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May 2014, V1.00
MBI5153
Pin Configuration
GND 1
SDI 2
DCLK 3
LE 4
OUT0 5
OUT1 6
OUT2 7
OUT3 8
OUT
4 9
OUT
5 10
OUT6 11
OUT7 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 PWM Constant Current LED Driver
for 1:32 Time-multiplexing Applications
LE
OUT0
OUT1
OUT2
OUT3
OUT4
24 23 22 21 20 19
1
18
2
3
4
5
6
7
8
17
16
15
14
13
9 10 11 12
OUT15
OUT14
OUT13
OUT12
OUT11
OUT10
MBI5153 GP
GFN
Terminal Description
Pin Name
GND
SDI
DCLK
LE
OUT0
~
OUT15
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
Constant current output terminals
Gray scale clock terminal
Clock input for gray scale. The gray scale display is counted by gray scale
clock compared with input data.
Serial-data output to the receiver-end SDI of next LED driver
Input terminal used to connect an external resistor for setting up output
current for all output channels
3.3V/5V supply voltage terminal
GCLK
SDO
R-EXT
VDD
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May 2014, V1.00
MBI5153
16-Channel PWM Constant Current LED Driver
for 1:32 Time-multiplexing Applications
Equivalent Circuits of Inputs and Outputs
GCLK, DCLK, SDI terminal
VDD
LE Terminal
VDD
IN
IN
SDO Terminal
VDD
OUT
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May 2014, V1.00
MBI5153
Maximum Rating
Characteristic
Supply Voltage
16-Channel PWM Constant Current LED Driver
for 1:32 Time-multiplexing Applications
Symbol
V
DD
V
IN
V
DS
I
OUT
I
GND
GP Type
GP Type
P
D
R
th(j-a)
T
j
,
max
T
opr
T
stg
HBM (MIL-STD-883G
Method 3015.7, Human
Body Mode)
MM (JEDEC
EIA/JESD22-A115,
Machine Mode)
HBM
MM
Rating
0~7
-0.4~V
DD
+0.4
-0.5~17
+22
360
1.79
3.12
69.5
40.01
150**
-40~+85
-55~+150
Class 3B
(8000V)
Class C
(≧400V)
Unit
V
V
V
mA
mA
W
°C/W
°C
°C
°C
-
-
Input Pin Voltage (SDI, DCLK, GCLK, LE)
Sustaining Voltage at OUT Port
Output Current
GND Terminal Current
Power Dissipation
Thermal Resistance
Junction Temperature
Operating Ambient Temperature
Storage Temperature
(On 4 Layer PCB, Ta=25°C)* GFN Type
(On 4 Layer PCB, Ta=25°C)* GFN Type
ESD Rating
*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.
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May 2014, V1.00
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