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PDF SD16729 Data sheet ( Hoja de datos )
| Número de pieza | SD16729 | |
| Descripción | 16-BIT CONSTANT CURRENT LED DRIVER | |
| Fabricantes | Silan Microelectronics Joint-stock | |
| Logotipo |  |
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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
* 16-channel constant current output
* Output current: 1~45mA
* 30MHz clock frequency
* Fast output current response, ENABLE min. width:30ns
* Current Precision (all output are ON)
Precision
Between Between
Test Condition
bits ICs
<±2%
<±3%
Output current:1~15mA
SSOP-24-300-1.0
APPLICATIONS
* LED screen
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
1 page  
wwwS.DDat1aS6he7e2t4U9.com
PIN CONFIGURATION
GND 1
SERIAL-IN 2
CLOCK 3
LATCH 4
OUT0 5
OUT1 6
OUT2 7
OUT3 8
OUT4 9
OUT5 10
OUT6 11
OUT7 12
24 VDD
23 R-EXT
22 SERIAL-OUT
21 ENABLE
20 OUT15
19 OUT14
18 OUT13
17 OUT12
16 OUT11
15 OUT10
14 OUT9
13 OUT8
PIN DESCRIPTION
Pin No.
1
2
3
4
5 ~ 20
21
22
23
24
Pin Name
GND
SERIAL-IN
CLOCK
LATCH
OUT0 ~ OUT15
ENABLE
SERIAL-OUT
R-EXT
VDD
I/O Pin Function
-- Ground
I Shift register input pin
I Clock input pin for shift register
I Data strobe pin for the latch
I/O Output pins
I Output enable pin (active low)
O Shift register output pin
I/O External resistor connecting pin
-- Power supply
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
5 Page 
wwwS.DDat1aS6he7e2t4U9.com
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
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet SD16729.PDF ] | |
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