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PDF MBI5041 Data sheet ( Hoja de datos )
| Número de pieza | MBI5041 | |
| Descripción | 16-Channel Constant Current LED Driver | |
| Fabricantes | Macroblock | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MBI5041 (archivo pdf) en la parte inferior de esta página. Total 23 Páginas | ||
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Macroblock
Preliminary Datasheet
MBI5041
16-Channel Constant Current LED Driver
With 16-bit PWM Control
Features
Backward compatible with MBI5026 and MBI5030 in package
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: 2~30mA @ 5.0V / 3.3V supply voltage
Output current accuracy:
Between channels: <±1.5% (typ.), and
Between ICs: <±3.0% (typ.)
Staggered delay of output, preventing from current surge
Maximum data clock frequency: 30MHz
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
MBI5041 is designed for LED video applications using internal Pulse Width Modulation (PWM) control with 16-bit
color depth. MBI5041 features a 16-bit shift register which converts serial input data into each pixel gray scale of
output port. At MBI5041 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 MBI5041 can be further programmed to 64 gain steps for LED
global brightness adjustment.
With Scrambled-PWM (S-PWM) technology, MBI5041 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. MBI5041 offloads the signal timing
generation of the host controller which just needs to feed data into drivers. MBI5041 drives the corresponding LEDs
to the brightness specified by image data. With MBI5041, 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. 2012
Floor 6-4, No.18, Pu-Ting Rd., Hsinchu, Taiwan 30077, ROC.
TEL: +886-3-579-0068, FAX: +886-3-579-7534 E-mail: [email protected]
- 1 - January 2012, V1.00
1 page  
MBI5041
16-Channel Constant Current LED Driver
Electrical Characteristics (VDD=5.0V)
Characteristics
Symbol
Condition
With 16-Bit PWM Control
Min. Typ. Max. Unit
Supply Voltage
Sustaining Voltage at OUT
Ports
Output Current
Input Voltage
“H” level
“L” level
Output Leakage Current
Output Voltage SDO
Current Skew (Channel)
Current Skew (IC)
Output Current vs.
Output Voltage Regulation*
Output Current vs.
Supply Voltage Regulation*
Pull-down Resistor
Supply
Current
“Off”
“On”
*One channel on.
VDD - 4.5
VDS
IOUT
IOH
IOL
VIH
VIL
IOH
VOL
VOH
dIOUT
dIOUT2
%/dVDS
%/dVDD
OUT0 ~ OUT15
Refer to “Test Circuit for
“Electrical Characteristics”
SDO
SDO
Ta=-40~85ºC
Ta=-40~85ºC
VDS=17.0V
IOL=+1.0mA
IOH=-1.0mA
IOUT=2mA
VDS=1.0V
Rext=7KΩ
IOUT=25mA
VDS=1.0V
Rext=560Ω
IOUT=2mA
VDS=1.0V
Rext=7KΩ
IOUT=25mA
VDS=1.0V
Rext=560Ω
VDS within 1.0V and 3.0V,
Rext=560Ω@25mA
VDD within 4.5V and 5.5V
-
2
-
-
0.7xVDD
GND
-
-
VDD-0.4V
-
-
-
-
-
-
RIN(down) LE
IDD(off) 1
IDD(off) 2
IDD(off) 3
IDD(on) 1
IDD(on) 2
Rext=Open,
Rext=560Ω,
Rext=360Ω,
Rext=560Ω,
Rext=360Ω,
OUT0 ~ OUT15 =Off
OUT0 ~ OUT15 =Off
OUT0 ~ OUT15 =Off
OUT0 ~ OUT15 =On
OUT0 ~ OUT15 =On
250
-
-
-
-
-
5.0
-
-
-
-
-
-
-
-
-
±1.5
±1.5
±3.0
±3.0
±0.1
±1.0
450
1.8
4.0
6.0
4.2
6.3
5.5
17.0
30
-1.0
1.0
VDD
0.3xVDD
0.5
0.4
-
±3.0
±3.0
±6.0
±6.0
±0.3
±2.0
800
5.0
8.0
10.0
8.0
10.0
V
V
mA
mA
mA
V
V
μA
V
V
%
%
%
%
%/V
%/V
KΩ
mA
- 5 - January 2012, V1.00
5 Page 
MBI5041
Write Configuration
16-Channel Constant Current LED Driver
With 16-Bit PWM Control
DCLK
LE
SDI
1. Enable writing configuration
2. Start to shift register configuration data
3. Write command
234
15 16 1
23
678
15 16
1
2
3
Don't Care
D15 D14 D13 D12
Configuration Data
D1 D0
Next Data
Reset PWM Counter
Reset PWM counter
DCLK
LE
GCLK
OUT0~15
2 345
13 14 15 16
N N +1
Output ports are switching
according to previous data value
1
2 N N +1
Output ports are switching according to
previous data value again
N +2
N +3
Setting Gray Scales of Pixels
MBI5041 implements the gray level of each output port using the S-PWM control algorithm. With the 16-bit data, all
output channels can be built with 65,536 gray scales.
There are two methods to issue the “global latch” command.
1. When configuration bit “F” is set to “0” (Default), the 16-bit input shift register latches 15 times of the gray scale
data into each data buffer with a “data latch” command sequentially. With a “global latch” command for the 16th gray
scale data, the data will be clocked in with the MSB first, loading the data from port 15 to port 0.
2. When configuration bit “F” is set to “1”, the 16-bit input shift register latches 16 times of the gray scale data into
each data buffer with a “data latch” command sequentially. With a “global latch” command for additional latch, the
data will be clocked in with the MSB first, loading the data from port 15 to port 0.
- 11 -
January 2012, V1.00
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet MBI5041.PDF ] | |
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