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دیتاشیت - StarChips - 8-bit Serial-In/Parallel-Out Constant Current Driver

شماره قطعه SCT2167
شرح مفصل 8-bit Serial-In/Parallel-Out Constant Current Driver
تولید کننده StarChips 
آرم StarChips 


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SCT2167 شرح
StarChips
Technology
SCT2167 V01_02; Jul/12
8-bit Serial-In/Parallel-Out Constant Current Driver
Product Description
The SCT2167 serial interfaced LED driver sinks 8 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 SCT2167 guarantees each output can endure
maximum 17V DC voltage stress. The built in shift registers and data latches making the SCT2167
effective solution in driving LED display. The output enable function gates all 8 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 SCT2167 will satisfy system which needs high volume data transmission to
control the LED
Features
8 constant current sinkers with output voltage sustainable to 17V
Constant output current : 5 – 30/45mA@3.3/5V
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 8 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: SSOP16 and SOP16
Applications: LED Displays, Variable Message Signs, Illumination, LED Traffic Signs

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