shift registers and latch
serial input data into parallel
8-bit Constant Current LED Sink Driver MBI5001
January 2003,V1.0c
Features
· 8 constant current output channels
· adjustable output current through external resistor
· serial data in/parallel data out
· output current: 5-90 mA
· 20 MHz clock freq.
Product Description
The MBI5001, utilizing the most
technology, is targeted for LED panel
MBI5001 contains CMOS
functions, converting
output format. At output stage,
sources were designed to provide 5-90 mA constant
current for driving the LEDs.
MBI5001CN
MBI5001CD
MBI5001CP
The MBI5001 provides users great flexibility and device performance while using the
MBI5001 in their LED panel system design. Users may adjust the output current of the
MBI5001 through an external resistor R-ext, which gives users flexibility in controlling th
light intensity of LEDs. The MBI5001 guarantees 17V output driving capability, allowing
users to connect more LEDs in series. The high clock frequency, 20 MHz, also satisfies
system requirement of high volume data transmission.
Pin Out
GND
SDI
CLK
/LE
OUT0
OUT1
OUT2
OUT3OUT4
2
3
4
5
6
7
89
16
15
14
13
12
11
10
VDD1
R-EXT
SDO
/OE
OUT7
OUT6
OUT5
ÓMacroblock, Inc. 2003
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
MBI 5001-V1.0c 8-bit Constant Current LED Sink Driver
Block Diagram
OUT0 OUT1 OUT7
R-EXT
I-REG.
/OE
/LE
SDI
CLK
Timing Diagram
CLK
SDI
/LE
/OE
OUT0
OUT1
OUT2
Q
STD
DCKQ DCKQ DCKQ
Q
STD
5V
0V
5V
0V
5V
0V
5V
0V
On
Off
Off
On
Off
Q
STD
SDO
OUT7
SDO
Off
5V
0V
Terminal Description
PIN NO. PIN NAME FUNCTION
1 GND
2 SDI
GND terminal
Serial data input terminal
3 CLK Clock input terminal
4 /LE Latch input terminal
5-12 OUT0-7 Output terminal
13 /OE Output enable input terminal
14 SDO Serial data out terminal
15 R-EXT Constant current programming
16 VDD 5V supply voltage terminal
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MBI 5001-V1.0c 8-bit Constant Current LED Sink Driver
Truth table
CLK /LE /OE SDI OUT0 OUT5 OUT7 SDO
UP H L D
UP L L D
UP H L D
DOWN X L D
DOWN X H D
Equivalent Circuit of Inputs and Outputs:
1. /OE terminal2. /LE terminal
VDD
/OE /LE
GND GND
D
n
NO CHANGE D
n+1
D
n+2
D
n+3
Off D
n+3
D
n
D
n+2
D
n+2
n-5
n+3
n+3
D
D
D
D
n-7
D
n+5
D
n+5
n-7
n-6
n-5
n-5
n-5
VDD
3. CLK, SDI terminal4. SDO terminal
VDDVDD
CLK, SDI SDO8th LATCH
DATA
GNDGND
Maximum Ratings
CHARACTER SYMBOL RATING UNIT
Supply Voltage V
Output Voltage V
Output Current I
Input Voltage V
GND Terminal Current I
Clock Frequency F
Power Dissipation
(ON PCB, Ta=25℃)
Thermal Resistance
(ON PCB, Ta=25℃)
CN – type
CD – type
CP – type
CN – type
CD – type
CP – type
Operating Temperature T
Storage Temperature T
0~+7.0 V
DD
-0.5~+17.0 V
OUT
+90 mA
OUT
-0.4~VDD+0.4 V
IN
720 mA
GND
20 MHZ
CLK
1.640
PD
1.060
0.880
76
R
th(j-a)
117
141
-40~+85 °C
opr
-55~+150 °C
stg
W
°C/W
- 3 -