SD16730 Datasheet, PDF (4/12 Pages) Silan Microelectronics Joint-stock – 8-Bit Constant Current LED Driver

SD16730
Characteristics
Propagation Delay Time (“H”
to “L”)
Output Rise Time
Output Fall Time
Maximum CLOCK Rise Time
Maximum CLOCK Fall Time
Symbol
Test conditions
CLK－ OUTn , LATCH = “H”,
TpHL1
ENABLE =“L”
TpHL2 LATCH－ OUTn , ENABLE =“L”
TpHL3 ENABLE － OUTn , LATCH =“H”
TpHL4 ^{CLK－SERIAL OUT}
tor -
tof -
tr
-
tf
-
Min.
-
-
-
4
40
40
-
-
Typ. Max.
170 340
170 340
170 340
7
-
85
150
70
150
-
5
-
5
Unit
nS
nS
nS
nS
nS
nS
uS
uS
PIN CONFIGURATION
GND 1
SERIAL-IN 2
CLOCK 3
LATCH 4
OUT0 5
OUT1 6
OUT2 7
OUT3 8
16 VDD
15 R-EXT
14 SERIAL-OUT
13 ENABLE
12 OUT7
11 OUT6
10 OUT5
9 OUT4
PIN DESCRIPTIONS
Pin No.
1
2
3
4
5 ~ 12
13
14
15
16
Pin Name
GND
SERIAL-IN
CLOCK
LATCH
OUT0 ~ OUT7
ENABLE
SERIAL-OUT
R-EXT
VDD
I/O
Description
--
Ground terminal
I
Input terminal of a data shift register
I
Input terminal of a clock shift register
I
Input terminal of a data strobe
O
Output terminals
I
Input terminal of output enable (low active)
O
output terminal of a data shift register
I
Input terminal of an external resistor
--
Supply voltage terminal
FUNCTION DESCRIPTION
In LED display application, SD16730 can maintain the current nearly no variations among different channels or
chips. The maximum current variation range is ±3% between channels and ±6% between chips.
This device has only one ground pin shared by signal, output sink current, and power ground. It is advisable to
pattern the ground layout with minimized inductance so that the switching noise induced by the input signals and
the output sink current would not cause chip malfunction. To prevent drivers’ outputs from damaging by
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.1 2008.11.16
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