Macroblock
Features
Datasheet
MBI5034
16-Channel Constant Current LED Sink Driver with
Compulsory Open-circuit Detection and Current Gain
Small Outline Package
16 constant-current output channels
Constant output current range: 3~45mA
- 3-45mA @ 5V supply voltage
- 3-30mA @ 3.3V supply voltage
Compulsory LED open-circuit detection
- Open-circuit LEDs can be detected
- Full panel, data independent
- Flicker-free error detection
GF: SOP24L-300-1.00
64-step programmable current gain: from 12.5% to 200%
Excellent output current accuracy,
- Between channels: <±1.5% (typ.), and
- Between ICs: <±3% (typ.)
Shrink SOP
Fast response of output current
- Min. output pulse width of
OE : 20ns
Staggered delay of output, preventing from current surge
30MHz clock frequency
Schmitt trigger input
GP: SSOP24L-150-0.64
Product Description
MBI5034 is an enhanced 16-channel constant current LED sink driver with smart error detection and output current
gain. MBI5034 succeeds MBI5026 and also exploits
PrecisionDrive™
technology to enhance the output
characteristics. Furthermore, MBI5034 adopts
Share-I-O™
technology to be backward compatible with MBI5026,
MBI5036 and MBI5039 in pin definition and has the functionality for compulsory LED open-circuit detection and
current gain control in LED display systems.
MBI5034 contains a 16-bit shift register and a 16-bit output latch, which convert serial input data into parallel output
format. At MBI5034 output stages, sixteen regulated current ports are designed to provide uniform and constant
current sinks with small skew between ports for driving LEDs within a wide range of forward voltage (V
F
) variations.
Users may adjust the output current from 3mA to 45mA with an external resistor R
ext
, which provides users
flexibility in controlling the light intensity of LEDs. MBI5034 guarantees to endure maximum 17V at the output ports.
Besides, the high clock frequency, up to 30MHz, also satisfies the system requirements of high volume data
transmission.
With the open-circuit detection, MBI5034 can detect individual LED open-circuit error without extra components.
Once the dedicated command is issued, all of the output ports will be turned on with small current. Since the
turn-on duration and current are so small, the flicker will not be sensed by human eyes and the image quality will
not be impacted. All of the channels are detected no matter the input data is zero or one.
Macroblock,
Inc. 2015
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-
July 2015, VA.00
MBI5034
16-Channel Constant Current LED Sink Driver with
Compulsory Open-circuit Detection and Current Gain
In addition, MBI5034 also allows users to adjust the output current level by setting a programmable configuration
code. The code is sent into MBI5034 via the pin SDI. The falling edge of LE would latch the code in the shift
register into a built-in 16-bit configuration register, instead of the output latch. The gain code would affect the
voltage at the terminal R-EXT and control the output current regulator. The output current can be adjusted finely by
a gain ranging from 12.5% to 200% in 64 steps.
With the
Share-I-O™
technique, MBI5034 could be a drop-in replacement of predecessors. The printed circuit
board originally designed for MBI5026/36/39 may be also applied to MBI5034 only that the controllers have to be
upgraded and
OE
needs to be controllable.
-2-
July 2015, VA.00
MBI5034
Pin Configuration
GND
SDI
CLK
LE
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
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
16-Channel Constant Current LED Sink Driver with
Compulsory Open-circuit Detection and Current Gain
VDD
R-EXT
SDO
OE
OUT15
OUT14
OUT13
OUT12
OUT11
OUT10
OUT9
OUT8
MBI5034GF/GP
Top View
Terminal Description
Pin Name
Function
GND
SDI
CLK
LE
OUT0
~
OUT15
Ground terminal for control logic and current sinks
Serial-data input to the shift register
Clock input terminal used to shift data on rising edge and carry command
information when LE is asserted.
Data strobe terminal and asserting command with adequate CLK pulses
Constant current output terminals
Enable output drivers to sink current. Internal pulled-high.
When its level is low (active), the output drivers are enabled; when high, all output
drivers are turned OFF (blank). The signal is used for error detection. Please refer
to error detection sections for further details.
Serial-data output to the SDI of the following driver IC
Input terminal used for connecting an external resistor in order to set up the current
level of all output ports
3.3/5V supply voltage terminal
OE
SDO
R-EXT
VDD
-3-
July 2015, VA.00
MBI5034
Block Diagram
16-Channel Constant Current LED Sink Driver with
Compulsory Open-circuit Detection and Current Gain
OUT0
OUT1
OUT14
OUT15
R-EXT
VDD
OE
6-bit
Current Gain
Control Logic
6
LE
LED Open-Circuit Detection
16-Bit Output Driver
16
16-Bit Output Latch
16
SDO
GND
CLK
16-Bit Configuration Register
16
16-Bit Shift Register
SDI
16
Equivalent Circuits of Inputs and Outputs
OE
terminal
VDD
LE terminal
VDD
IN
IN
CLK, SDI terminal
VDD
SDO terminal
VDD
IN
OUT
-4-
July 2015, VA.00
MBI5034
Maximum Ratings
16-Channel Constant Current LED Sink Driver with
Compulsory Open-circuit Detection and Current Gain
Characteristic
Symbol
Rating
Unit
Supply Voltage
Input Pin Voltage (SDI,
OE
, LE, CLK)
Sustaining Voltage at SDO Pin
Sustaining Voltage at
OUTn
Pins
Output Current (
OUT0
~
OUT15
)
GND Terminal Current
Power Dissipation
(On 4 Layer PCB, Ta=25°C)*
Thermal Resistance
(On 4 Layer PCB, Ta=25°C)*
Junction Temperature
Operating Ambient Temperature
Storage Temperature
HBM
(MIL-STD-883G
Method 3015.7,
Human Body Mode)
MM (JEDEC
EIA/JESD22-A115,
Machine Mode)
GF Type
GP Type
GF Type
GP Type
V
DD
V
IN
V
OUT
V
DS
I
OUT
I
GND
P
D
R
th(j-a)
T
j
,
max
T
opr
T
stg
HBM
0~7.0
-0.4 to VDD+0.4
-0.4~V
DD
+0.4
-0.5~+17
+45
+720
1.83
1.76
68.44
71.18
150**
-40~+85
-55~+150
Class 3A
(4000V~7999V)
Class B
(200V~399V)
V
V
V
V
mA
mA
W
°C/W
°C
°C
°C
-
ESD Rating
MM
-
*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 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-
July 2015, VA.00
微控制器 MCU
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
