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SCT2024 데이터시트 PDF




StarChips에서 제조한 전자 부품 SCT2024은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 SCT2024 기능
기능 16-bit Serial-In/Parallel-Out Constant-Current LED Driver
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SCT2024 데이터시트, 핀배열, 회로
StarChips
Technology
SCT2024 V01_03; May/11
16-bit Serial-In/Parallel-Out Constant-Current LED Driver
Product Description
The SCT2024 serial interfaced LED driver sinks 16 LED clusters with constant current to keep the
uniform intensity of LED displays. In applications, an external resistor is used to set the full scale
constant output current from 5mA up to 45mA. The SCT2024 guarantees each output can endure
maximum 17V DC voltage stress. The built in shift registers and data latches making the SCT2024
effective solution in driving LED display. The output enable function gates all 16 outputs on and off, and
is fast enough to be used as PWM input for LED intensity control. Since the serial data input rate can be
reached up to 25MHz, the SCT2024 will satisfy system which needs high volume data transmission to
control the LED display. Furthermore, the SCT2024 provides excellent temperature regulation thus it
can be applied to varied of operating temperature.
Features
16 robust constant current sinker with LED power supply voltage up to 17V
Constant output current : 5 – 30/[email protected]/5V
Wide power supply voltages: 3.3V to 5V
Excellent regulation to load, supply voltage and temperature
Temperature regulation: ±0.005%/°C,
Load regulation: ±0.1%/V
Line regulation: ±0.5%/V
High current matching accuracy: ±1% between outputs, ±2% between ICs
Fine grayscale response with 180ns PWM pulse width
Dropout voltage 0.5V@20mA, VDD=5V
CMOS Schmitt trigger inputs with clock rate up to 25MHz @ cascade connection
The constant current value of 16 outputs is set by a single external resistor
Interlaced 30ns delay of output, preventing instant current surge and output bouncing overstress
Built in power on reset(POR) circuit forces all the outputs off while power on
Package: SSOP24, SSOP24 1, SOP24 and TQFN24
Applications: LED Displays, Variable Message Signs, Illumination, LED Traffic Signs
Page 1 of 21




SCT2024 pdf, 반도체, 판매, 대치품
16-bit Serial-In/Parallel-Out Constant-Current LED Driver
SCT2024
Selector Guide
Part
SCT2110
SCT2168
SCT2169
SCT2167
SCT2210
SCT2026
SCT2027
SCT2024
Number of
Outputs
8
8
8
8
16
16
16
16
Max Output
Current (mA)
180
120
120
60
120
90
90
60
Min PWM Pulse
Width (ns)
100
120
120
180
50
120
120
180
Supply
Voltage (V)
5
3.3/5
3.3/5
3.3/5
5
3.3/5
3.3/5
3.3/5
Ordering Information
Error Detection
NA
NA
Yes
NA
NA
NA
Yes
NA
Part
SCT2024CSSG
SCT2024CSTG
SCT2024CSOG
SCT2024CSAG
SCT2024CQNG
SCT2024AQNG
Marking
SCT2024CSSG
SCT2024CSTG
SCT2024CSOG
SCT2024CSAG
2024CQNG
2024AQNG
Package
Green SSOP24
Green SSOP24 1
Green SOP24
Green SSOP24
Green TQFN24
Green TQFN24
StarChips Technology, Inc.
4F, No.5, Technology Rd., Science Based Industrial Park, Hsin Chu, Taiwan, R.O.C.
Tel : +886 3 577 5767 Ext.555,
Fax: +886 3 577 6575,
Unit per reel(pcs)
2500
2000
1000
2500
3000
3000
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SCT2024 전자부품, 판매, 대치품
16-bit Serial-In/Parallel-Out Constant-Current LED Driver
SCT2024
Electrical Characteristics (VDD=3.3/5V, TA=25°C unless otherwise noted)
Characteristic
Input voltage
SDO output voltage
Output leakage current
Output current
Current bit skew1
Chip skew2
Line regulation3
IOUT vs. VDD
Load regulation4
IOUT vs. VOUT
Temp. regulation5
IOUT vs. TA
Pull up resistor
Pull down resistor
Supply current
OFF
Symbol
VIH
VIL
VOH
VOL
IOL
IOUT
dIOUT1
dIOUT2
%/dVDD
%/dVOUT
%/dTA
RUP
RDOWN
IDD(OFF)1
IDD(OFF)2
Conditions
VDD=3.3/5V, IOH= 1mA
VDD=3.3/5V, IOL=+1mA
VOUT=17V
VOUT=1V, REXT=900O
VOUT=1V, REXT=900O
VOUT=1V, REXT=900O
3V<VDD<5.5V,
VOUT>1V, REXT=900O
1V<VOUT<4V,
IOUT=21mA, REXT=900O
20°C < TA < 80°C,
IOUT=5mA~45mA, VDD=5V
OE/
LA/
VDD=3.3/5V, REXT=Open,
OUT[0:15]=OFF
VDD=3.3/5V, REXT=900R,
OUT[0:15]=OFF
Min.
0.7VDD
0
VDD 0.4
Typ.
21
±1
±2
±0.5
±0.1
±0.005
400
400
2
5
Max.
VDD
0.3VDD
0.4
0.5
±2
±5
Unit
V
V
V
V
uA
mA
%
%
±1 %/V
±0.5 %/V
%/°C
KO
KO
3
7 mA
ON
IDD(ON)
VDD=3.3/5V, REXT=900 R,
OUT[0:15]=ON
7/8 10
1. Bit skew=(IOUT IAVG) / IAVG, where IAVG=(IOUT(max)+ IOUT(min))/2
2. Chip skew=(IAVG ICEN) / ICEN*100(%), where ICEN is the statistics distribution center of output currents.
3. Line regulation=[IOUT(VDD=5.5V) IOUT(VDD=3V)] / {[IOUT(VDD=5.5V)+IOUT(VDD=3V)]/2} / (5.5V 3V)*100(%/V)
4. Load regulation=[IOUT(VOUT=4V) IOUT(VOUT=1V)] / {[IOUT(VOUT=4V)+IOUT(VOUT=1V)]/2} / (4V 1V)*100(%/V)
5. Temperature regulation=[IOUT(TA=80°C) IOUT(TA= 20°C )] / {[IOUT(TA=80°C)+IOUT(TA= 20°C )]/2} / (80°C+20°C)*100(%/°C)
Test Circuit for Electrical Characteristics
C1=1uF
REXT
VDD
IDD
VDD
SDI OUT0
CLK
OUT1
LA/
OE/ OUTn
VLED
IOUT
REXT
SDO
OUT15
GND
±1mA
SCT2024
VOUT
CLED=10uF
*Place C1/CLED as close to IC VDD/OUT pin(not supply source) as possible.
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