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參數(shù)資料
| 型號： | CAT4016Y-T2 |
| 英文描述： | 16-Channel Constant Current LED Driver |
| 中文描述： | 16通道恒流LED驅(qū)動器 |
| 文件頁數(shù)： | 1/15頁 |
| 文件大小： | 230K |
| 代理商： | CAT4016Y-T2 |
CAT4016
Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. MD-5028 Rev. B
16-Channel Constant Current LED Driver
FEATURES
16 Constant current-sink channels
Serial interface up to 25MHz clock frequency
3V to 5.5V logic supply
LED current range from 2mA to 100mA
LED current set by external RSET resistor
300mV LED dropout at 30mA
Thermal shutdown protection
Available in RoHS-compliant 24-lead SOIC,
TSSOP, QSOP, and 4 x 4mm TQFN packages
APPLICATION
Billboard Display
Marquee Display
Instrument Display
General Purpose Display
For Ordering Information details, see page 14.
TYPICAL APPLICATION CIRCUIT
DESCRIPTION
The CAT4016 is a 16 channel constant current driver
for LED billboard and other general display
applications. LED channel currents are programmed
together via an external RSET resistor. Low output
voltage operation on the LED channels as low as 0.4V
(for 2 to 100mA LED current) allows for more power
efficient designs.
A high-speed 4-wire serial interface of up to 25MHz
clock frequency controls each individual channel using
a shift register and latch configuration. A serial output
data pin (SOUT) allows multiple devices to be
cascaded and programmed via one serial interface.
The device also includes a blanking control pin
(BLANK) that can be used to disable all channels
independently of the interface.
Thermal shutdown protection is incorporated in the
device to disable the LED outputs if the die
temperature exceeds a set limit.
The device is available in the 24-lead SOIC, TSSOP,
QSOP and the compact TQFN 4 x 4mm packages.
LED1
VDD
VIN
3V to
5.5V
1μF
20mA
3k
BLANK
LATCH
C
SIN
CLK
LED2
GND
CAT4016
LED16
SOUT
to next
device
RSET
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