SD16729S [SILAN]
16-BIT CONSTANT CURRENT LED DRIVER; 16位恒流LED驱动器
| 型号： | SD16729S |
| 厂家： | 
SILAN MICROELECTRONICS JOINT-STOCK |
| 描述： | 16-BIT CONSTANT CURRENT LED DRIVER |
| 文件： | 总13页 (文件大小：758K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SD16729
16-BIT CONSTANT CURRENT LED DRIVER
DESCRIPTION
SD16729 is a constant current LED driver with advanced Bi-CMOS
technology, the constant current is determined by external resistor.
It includes a 16-bit shift register, latches, the constant current driver
and etc. In the output stage, there are 16 current sources which
provide a 1-45mA constant current drive for LED through bipolar
device.
SSOP-24-225-0.635
FEATURES
* Output current adjustable through external resistor
* Data serial-in/serial-out
SSOP-24-300-1.0
* 16-channel constant current output
* Output current: 1~45mA
* 30MHz clock frequency
APPLICATIONS
* Fast output current response, ENABLE min. width:30ns
* Current Precision (all output are ON)
Precision
* LED screen
Test Condition
Between
bits
Between
ICs
<±2%
<±3%
Output current:1~15mA
ORDERING INFORMATION
Device
SD16729P
SD16729S
Package
SSOP-24-300-1.0
SSOP-24-225-0.635
Marking
SD16729P
SD16729S
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.1
2009.03.10
Page 1 of 14
SD16729
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATING (Tamb=25°C)
Characteristics
Supply Voltage
Symbol
VDD
Ratings
Unit
6
-0.2~VDD+0.2
50
V
V
Input Voltage
Output Current
Output Voltage
Power
VIN
IOUT
mA/ch
V
VOUT
-0.2~ 17
SD16729S
SD16729P
SD16729S
SD16729P
PD1
PD2
1.04
1.32
120
94
W
Dissipation
Power
W
Dissipation
Thermal
Rth(j-a)1
Rth(j-a)2
°C/W
°C/W
Resistance
Thermal
Resistance
Storage Temperature
Operating Temperature
Tstg
Topr
-55~+150
-40 ~ 85
°C
°C
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.1
2009.03.10
Page 2 of 14
SD16729
OPERATING CONDITION RECOMMENDED
Characteristics
Supply Voltage
Symbol
VDD
Test conditions
Min.
3.0
0.5
1
Typ.
Max.
5.5
17
45
1
Unit
V
-
-
-
-
1
-
Output Voltage
VOUT
IOUT
IOH
V
mA/ch
mA
mA
Output Current
SERIAL-OUT
SERIAL-OUT
-
-
IOL
-
-
-1
V
+
DD
Input Voltage
VIH
-
0.76V
-
V
DD
0.15
Input Voltage
VIL
-
-0.15
-
-
-
-
-
-
0.26V
V
MHz
nS
DD
CLOCK Frequency
LATCH Setup Time
LATCH Hold Time
CLOCK Pulse Width
F
Cascaded
-
30
-
clk
tSU(L)
5
t
30
20
-
nS
h(L)
tCLK
-
nS
I
= 20 mA, conntected to LED
OUT
ENABLE Pulse Width
t
30
-
-
nS
ENA
for test
CLOCK Setup Time
CLOCK Hold Time
t
-
-
10
10
-
-
-
-
nS
nS
su(C)
t
h(C)
ELECTRICAL CHARACTERISTICS (Unless otherwise specified, Tamb=25°C, VDD=3.0V-5.5V)
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
V
V
V
V
=3.3V
DD
IOUT1
IOUT2
IOUT3
IOUT4
IOUT5
IOUT6
38.53
38.53
14.81
14.81
1.5
39.55
39.55
15.25
15.25
1.55
40.61
mA
mA
mA
mA
mA
=1V
OUT
R
=470Ω
EXT
=5.0V
DD
40.61
15.69
15.69
1.6
=1V
OUT
=3.3V
DD
=1V
OUT
Output Current
REXT=1.2kΩ
REXT = 12kΩ
=5.0V
DD
=1V
OUT
=3.3V
DD
=1V
OUT
=5.0V
DD
mA
uA
1.5
-
1.55
-
1.6
1
=1V
OUT
OUT
Output Leakage Current
Iok
=15.0V
>0.7V
△ IOUT1
V
R
R
=1.2kΩ
=12kΩ
OUT
OUT
EXT
Output Current Precision
(Bit To Bit)
-
±1
±2
%
△ IOUT2
V
>0.7V
EXT
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.1
2009.03.10
Page 3 of 14
SD16729
Characteristics
Symbol
Test conditions
Min.
3
Typ.
-
Max.
-
Unit
V
IOH=-1.0 mA, VDD=3.3 V
Output Voltage (SOUT)
VOH
I
=-1.0 mA, V =5.0 V
4.7
-
-
-
V
OH
DD
IOL=1.0 mA, VDD=3.3 V
=1.0 mA, V =5.0 V
-
0.3
0.3
2
V
Output Voltage (SOUT)
VOL
I
-
-
V
OL
DD
V
: 3.0V－5.0V
DD
Output Current Regulation %/VDD
-
1
%
Pull-Down Resistance
Pull-Up Resistance
R
-
115
115
11.5
4.5
0.57
18
250
250
13.14
5.2
0.72
20
460
460
15
kΩ
kΩ
mA
mA
mA
mA
mA
mA
IN(down)
R
-
IN(up)
V
V
V
V
V
V
V
=15.0V, R
=15.0V, R
=15.0V, R
=470Ω
=1.2kΩ
=12kΩ
OUT
OUT
OUT
OUT
OUT
OUT
OUT
EXT
EXT
EXT
Supply Current OFF
I
OFF
6
0.86
23
=1V, R
=1V, R
=1V, R
=470Ω
=1.2kΩ
=12kΩ
EXT
EXT
EXT
I
ON
ON
6.5
0.83
7.95
1.04
9.5
1.24
=1V, T
=-40°C,
= -40°C,
= -40°C,
amb
-
-
-
-
-
-
30
13
1.5
70
mA
mA
mA
ns
Supply Current ON
R
=470Ω
EXT
V
=1V, T
=1.2kΩ
OUT
amb
I
R
EXT
V
=1V, T
OUT
amb
-
R
=12kΩ
EXT
CLK- OUTn , LATCH = “H”
ENABLE =“L”
t
50
pLH1
Propagation Delay
(“L” To “H”)
LATCH - OUTn , ENABLE =“L”
ENABLE - OUTn , LATCH =“H”
CLK－SERIAL OUT
CLK- OUTn , LATCH = “H”
ENABLE =“L”
t
t
t
-
-
50
50
10
70
70
15
ns
ns
ns
pLH2
pLH3
pLH4
3
t
-
20
50
ns
pHL1
Propagation Delay
(“H” To “L”)
LATCH - OUTn , ENABLE =“L”
ENABLE - OUTn , LATCH =“H”
CLK－SERIAL OUT
-
t
t
t
-
-
20
20
10
-
50
50
ns
ns
ns
ns
ns
pHL2
pHL3
pHL4
4
-
15
Max. CLOCK Rise Time
Max. CLOCK Fall Time
t
r
500
500
t
f
-
-
-
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.1
2009.03.10
Page 4 of 14
SD16729
PIN CONFIGURATION
GND
SERIAL-IN
CLOCK
LATCH
OUT0
1
2
3
4
5
6
7
8
9
24 VDD
23 R-EXT
22 SERIAL-OUT
21 ENABLE
20 OUT15
19 OUT14
18 OUT13
17 OUT12
16 OUT11
15 OUT10
14 OUT9
OUT1
OUT2
OUT3
OUT4
OUT5 10
OUT6 11
OUT7 12
13 OUT8
PIN DESCRIPTION
Pin No.
Pin Name
I/O
--
I
Pin Function
1
2
3
4
GND
SERIAL-IN
CLOCK
Ground
Shift register input pin
Clock input pin for shift register
Data strobe pin for the latch
Output pins
I
LATCH
I
~
OUT0 OUT15
5 ~ 20
21
I/O
I
Output enable pin (active low)
Shift register output pin
External resistor connecting pin
Power supply
ENABLE
22
SERIAL-OUT
R-EXT
O
I/O
--
23
24
VDD
FUNCTION DESCROPTION
In the LED display applications, SD16729 can maintain almost no change in different channels or between the
different chips. In the different channels, the current changes less than ±2%, while between the different chips,
the current changes less than ± 3%.
There is only one pin connected to ground which is shared as analog ground, digital ground and power ground. It
is recommended to route with min. inductance against switching noise and output current noise-induced IC faults.
In order to obtain a good current output, the chip needs an appropriate output voltage. According to the
electrical characteristics table, users can get minimum output voltage and other related information. Even in
the same output current conditions, the minimum output voltage of every part is different. .
In order to avoid noise interference, the resistance should be placed close to the pin R-EXT.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.1
2009.03.10
Page 5 of 14
SD16729
TIME SEQUENCE
NOTE: When
When
is low, latch the data;
LATCH
high, data is is transmitted from input to output of register;
LATCH
When
When
is low, normal response output;
is high, output is not available.
ENABLE
ENABLE
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.1
2009.03.10
Page 6 of 14
SD16729
SEQUENCE WAVEFORM
1. Clock, serial-in, serial-out
2. Clock, serial-in,
,
,
LATCH ENABLE OUTn
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.1
2009.03.10
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SD16729
3.
OUTn
TEST CIRCUIT
For this test circuit, Topr=25°C, VDD=VIH=3.3V/5V, VOUT=0.7V, VIL=0V, REXT=490ꢀ, VL=3.0V, RL=60ꢀ,
CL=10.5pF.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.1
2009.03.10
Page 8 of 14
SD16729
TYPICAL APPLICATION CIRCUIT
VLED=3~4(V)
+
Vds
-
SCAN
21 ENABLE
OUT0
5
Vo
3
4
2
CLOCK
LATCH
+
Vf
-
SD16729P/SD16729S
SERIAL-IN
OUT15 20
R-EXT
23
GND
1
SERIAL-OUT
22
CPU
21 ENABLE
OUT0
5
3
4
2
CLOCK
LATCH
SD16729P/SD16729S
SERIAL-IN
OUT15 20
R-EXT
23
GND
1
SERIAL-OUT
22
Note: this circuit and corresponding parameters are just for reference, please set the parameter according to
practical circuit.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.1
2009.03.10
Page 9 of 14
SD16729
ELECTRICAL CHARACTERISTIC CURVE
IOUT is given by:
IOUT= (VR-EXT /REXT)×15.2; VR-EXT=1.202V
Where, VR-EXT is voltage of R-EXT, and REXT is the resistance of resistor connected to R-EXT.
Power dissipation (PD)
Max. power dissipation is given by: PD(max)=(Tj-Ta)/Rth(j-a) and actual power dissipation when 16 channel are all
ON is expressed as: PD(act)=(IDDx VDD)+(IOUT x Duty x VCE x16).
Hence, to make PD(act)≤ PD(max), output current and duty cycle should be:
IOUT={[(Tj-Ta)/ Rth(j-a)]-(IDD x VDD) }/VCE/Duty/16, where Tj=150°C.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.1
2009.03.10
Page 10 of 14
SD16729
All the parameters are just for reference, please test for your design.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.1
2009.03.10
Page 11 of 14
SD16729
PACKAGE OUTLINE
SSOP-24-225-0.635
UNIT: mm
0.25
0.25±0.05
0.635
0.30
8.65±0.20
SSOP-24-300-1.0
UNIT: mm
13.0±0.2
+0.1
-0.05
0.2
1.0
1.0
0.4
13.5MAX
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.1
2009.03.10
Page 12 of 14
SD16729
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:
• 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.
Disclaimer:
•
Silan reserves the right to make changes to the information herein for the improvement of the design and performance
without further notice!
•
All semiconductor products malfunction or fail with some probability under special conditions. When using Silan products
in system design or complete machine manufacturing, it is the responsibility of the buyer to comply with the safety
standards strictly and take essential measures to avoid situations in which a malfunction or failure of such Silan products
could cause loss of body injury or damage to property.
•
Silan will supply the best possible product for customers!
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.1
2009.03.10
Page 13 of 14
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