SD16730S [SILAN]
8-Bit Constant Current LED Driver; 8位恒流LED驱动器
| 型号： | SD16730S |
| 厂家： | 
SILAN MICROELECTRONICS JOINT-STOCK |
| 描述： | 8-Bit Constant Current LED Driver |
| 文件： | 总12页 (文件大小：662K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SD16730
8-Bit Constant Current LED Driver
DESCRIPTION
SD16730 is a special constant current driver for LED display
application. The value of constant current can be determined with
external resistor. It bases on BICMOS technology and includes an 8-
bit shift register. Latch and constant current driver. At the output
stage, there are eight regulated current sources which provide 2-
80mA constant current for driving LEDs by Bipolar Junction
Transistor.
SOP-16-300-1.27
FEATURES
DIP-16-300-2.54
* Output current adjustable through an external resistor
* Serial data in/out
* 8 constant-current output channels
* Output current: 2-80mA
APPLICATIONS
* 20MHz clock frequency
* Current accuracy (All output ON)
* LED guardrail diode
Current accuracy
Output current
Between Bits Between ICs
<±3%
<±6%
10 to 60mA
ORDERING INFORMATION
Device
SD16730
SD16730S
Package
Seal
SD16730
SD16730S
DIP-16-300-2.54
SOP-16-300-1.27
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
REV:1.1
2008.11.16
Http://www.silan.com.cn
Page 1 of 12
SD16730
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATING (Tamb=25°C)
Characteristics
Supply Voltage
Symbol
VDD
Value
6
Unit
V
Input Voltage
VIN
-0.2~VDD-0.2
90
V
Output Current
IOUT
VOUT
PD1
mA/ch
V
Output Voltage
-0.2~ 17
1.25
Power Dissipation
Storage Temperature
Operating Temperature
W
Tstg
-55~+150
-40 ~ 85
°C
Topr
°C
RECOMMENDED OPERATE CONDITION
Characteristics
Supply Voltage
Symbol
VDD
Test conditions
Min.
Typ.
Max.
Unit
V
-
-
-
3.0
-
0.7
-
5.5
4.0
80
1
Output Voltage
VOUT
IOUT
IOH
-
2
-
V
mA/ch
mA
mA
Output Current
SERIAL-OUT
SERIAL-OUT
-
IOL
-
-
-1
V
+
DD
Input Voltage
VIH
-
0.74V
-
V
DD
0.15
Input Voltage
VIL
-
-0.15
-
-
-
-
0.26V
V
DD
Clock Frequency
Setup Time For LATCH
F
Cascade connected
-
20
-
MHz
nS
clk
TSU(L)
50
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Page 2 of 12
SD16730
Characteristics
Hold Time For LATCH
CLOCK Pulse Width
Symbol
Test conditions
Min.
50
Typ.
Max.
Unit
nS
nS
nS
nS
nS
nS
T
h(L)
-
-
-
-
-
-
-
-
-
-
-
-
tCLK
25
Upper IOUT = 20 mA
175
130
10
ENABLE Pulse Width
t
ENA
Lower I
= 20 mA
OUT
Setup Time For CLOCK
Hold Time For CLOCK
T
su(C)
-
-
T
h(C)
10
ELECTRICAL CHARACTERISTICS (Tamb=25°C, VDD=3.0V-5.5V unless otherwise specified)
Characteristics
Supply Voltage
Symbol
Test conditions
Min.
Typ.
Max.
Unit
VDD
-
3.0
-
5.5
V
V
V
V
V
V
V
V
V
V
=3.3V
DD
IOUT1
IOUT2
IOUT3
31.96
31.59
63.63
36.20
35.90
72.30
40.54
40.02
80.97
mA
mA
mA
=0.4V
OUT
R
=490Ω
EXT
=5.0V
DD
=0.4V
OUT
Output Current
=3.3V
DD
=0.7V
OUT
REXT=250Ω
=5.0V
DD
IOUT4
Iok
62.75
71.30
79.95
1
mA
uA
%
=0.7V
OUT
Output Leakage Current
Output Current (Bit to Bit)
=15.0V
OUT
-
-
-
△I
out1
VOUT>0.4V
>0.4V
R
R
=490Ω
=250Ω
EXT
±1
±3
△Iout2
V
OUT
EXT
IOH=-1.0 mA, VDD=3.3 V
=-1.0 mA, V =5.0 V
3
-
-
-
-
V
V
VOH
I
4.7
OH
DD
Output Voltage (SOUT)
IOL=1.0 mA, VDD=3.3 V
=1.0 mA, V =5.0 V
-
-
0.3
0.3
-5
V
VOL
I
-
-
V
OL
DD
V :3.0V－5.0V
DD
Output Current Regulation
Pull-down Resistor
Pull-up Resistor
%/VDD
-
-1
%
R
) -
115
230
230
0.1
3.5
6
460
460
0.5
5
kΩ
kΩ
mA
mA
mA
mA
mA
IN(down
R
IN(up)
-
115
V
V
V
V
V
V
=15.0V, OPEN
-
1
4
-
out
Supply Current OFF
I
OFF
=15.0V,R
=15.0V,R
=490Ω
=250Ω
=490Ω
=250Ω
out
EXT
EXT
EXT
EXT
9
out
=0.7V,R
OUT
=0.7V,R
OUT
OUT
5.5
10.5
15
25
I
ON
ON
-
=0.7V,T
=-40°C,
amb
Supply Current ON
-
-
-
-
-
20
40
mA
mA
nS
R =490Ω
EXT
I
V =0.7V,T
OUT
=-40°C ,
amb
R =250Ω
EXT
CLK－OUTn , LATCH= “H”,
ENABLE =“L”
T
140
300
pLH1
Propagation Delay Time (“L”
to “H”)
LATCH－OUTn , ENABLE =“L”
T
T
T
-
-
140
140
6
300
300
-
nS
nS
nS
pLH2
pLH3
pLH4
ENABLE －OUTn , LATCH =“H”
CLK－SERIAL OUT
3
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
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2008.11.16
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Page 3 of 12
SD16730
Characteristics
Symbol
Test conditions
CLK－OUTn , LATCH = “H”,
ENABLE =“L”
Min.
Typ.
170
170
Max.
Unit
nS
T
-
340
pHL1
Propagation Delay Time (“H”
to “L”)
LATCH－OUTn , ENABLE =“L”
T
T
T
-
340
nS
pHL2
pHL3
pHL4
ENABLE －OUTn , LATCH =“H”
CLK－SERIAL OUT
-
4
170
7
340
-
nS
nS
nS
nS
uS
uS
Output Rise Time
t
-
-
-
-
40
40
-
85
70
-
150
150
5
or
Output Fall Time
t
of
Maximum CLOCK Rise Time
Maximum CLOCK Fall Time
t
r
t
-
-
5
f
PIN CONFIGURATION
GND
SERIAL-IN
CLOCK
LATCH
OUT0
VDD
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
R-EXT
SERIAL-OUT
ENABLE
OUT7
OUT1
OUT6
OUT2
OUT5
OUT3
OUT4
PIN DESCRIPTIONS
Pin No.
Pin Name
GND
I/O
Description
1
2
--
I
Ground terminal
SERIAL-IN
CLOCK
Input terminal of a data shift register
Input terminal of a clock shift register
Input terminal of a data strobe
Output terminals
3
I
4
LATCH
I
5 ~ 12
13
14
15
16
~ OUT7
O
I
OUT0
ENABLE
Input terminal of output enable (low active)
output terminal of a data shift register
Input terminal of an external resistor
Supply voltage terminal
SERIAL-OUT
R-EXT
O
I
VDD
--
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
REV:1.1
2008.11.16
Http://www.silan.com.cn
Page 4 of 12
SD16730
overshoot stresses, it is also advisable not to turn off the drivers and scan transistors simultaneously.
In order to obtain an ideal constant current output, a suitable output voltage is necessary. Users can get related
information about the minimum output voltage from the character table. Even under the same output current
condition, the minimum output voltage required for each part is different.
The resistor should be placed as close as possible to the R-EXT terminal to avoid the noise influence.
TIMING DIAGRAM
Note: The latches circuit holds data when LATCH terminal goes low voltage.
When LATCH terminal is a high voltage, latch circuit does not hold data, and it passes from the input to the
output.
When ENABLE terminal is a low voltage, output terminals respond to the data, and on and off does.
When ENABLE terminal is a high voltage, it closes with the output terminal regardless of the data.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
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2008.11.16
Http://www.silan.com.cn
Page 5 of 12
SD16730
TIMING WAVEFORM
1. Clock, serial-in, serial-out
2. Clock, serial-in, LATCH, ENABLE , OUTn
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
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2008.11.16
Http://www.silan.com.cn
Page 6 of 12
SD16730
3. OUTn
ELECTRICAL CHARACTERISTICS CURVE
Output current - REXT resistor
IOUT-REXT
100
90
80
70
60
50
40
30
20
10
0
0.1K
1K
10K
REXT(Ω)
The calculation formula is as follows:
IOUT= (VR-EXT /REXT)×16; VR-EXT=1.185V
Where, VR-EXT is voltage on R-EXT port, REXT is the external resistance of R-EXT Port.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
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2008.11.16
Http://www.silan.com.cn
Page 7 of 12
SD16730
TEST CIRCUIT
DC CHARACTERISTIC
AC CHARACTERISTIC
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
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2008.11.16
Http://www.silan.com.cn
Page 8 of 12
SD16730
TYPICAL APPLICATION CIRCUIT
Note: The circuit and parameters are reference only, please set the parameters of the real application circuit
based on the real test.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
REV:1.1
2008.11.16
Http://www.silan.com.cn
Page 9 of 12
SD16730
PACKAGE OUTLINE
DIP-16-300-2.54
UNIT: mm
SOP-16-300-1.27
UNIT: mm
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
REV:1.1
2008.11.16
Http://www.silan.com.cn
Page 10 of 12
SD16730
MOS DEVICES OPERATE NOTES:
Electrostatic charges may exist in many things. Please take following preventive measures to prevent effectively
the MOS electric circuit as a result of the damage which is caused by discharge:
z
z
z
z
The operator must put on wrist strap which should be earthed to against electrostatic.
Equipment cases should be earthed.
All tools used during assembly, including soldering tools and solder baths, must be earthed.
MOS devices should be packed in antistatic/conductive containers for transportation.
Note：Silan reserves the right to make changes without notice in this specification for the improvement of the design and performance.
Silan will supply the best possible product for customers.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
REV:1.1
2008.11.16
Http://www.silan.com.cn
Page 11 of 12
SD16730
Attachment
Revision History
Data
REV
Description
Page
2008.06.23
1.0
Original
Modify the “RECOMMENDED OPERATE CONDITION”
and ”ELECTRICAL CHARACTERISTICS”
2008.11.16
1.1
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
REV:1.1
2008.11.16
Http://www.silan.com.cn
Page 12 of 12
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