CAT4008 PDF даташит
Спецификация CAT4008 изготовлена «Catalyst Semiconductor» и имеет функцию, называемую «8-Channel Constant Current LED Driver». |
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Детали детали
Номер произв | CAT4008 |
Описание | 8-Channel Constant Current LED Driver |
Производители | Catalyst Semiconductor |
логотип |
14 Pages
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CAT4008
8-Channel Constant Current LED Driver
FEATURES
8 Constant current-sink channels
Serial interface up to 25MHz clock frequency
3V to 5.5V logic supply
www.DataSheet4U.cLomED 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 16-lead SOIC (150
and 300mil wide), and TSSOP packages
APPLICATIONS
Billboard Display
Marquee Display
Instrument Display
General Purpose Display
For Ordering Information details, see page 13.
DESCRIPTION
The CAT4008 is an 8 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 16-lead SOIC (narrow
and wide), and TSSOP packages.
TYPICAL APPLICATION CIRCUIT
VIN
3V to
5.5V
1µF
VDD LED1 LED2
LED8
20mA
BLANK
LATCH
SIN
CLK
CAT4008
GND
SOUT
RSET
to next
device
3.09kΩ
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. MD-5034 Rev. A
No Preview Available ! |
CAT4008
ORDERING INFORMATION
Part Number
CAT4008W-T2
CAT4008V-T1
CAT4008Y-T2
Package
SOIC16 (N) (1)
SOIC16 (W) (1)(2)
TSSOP16 (1)(2)
Quantity per Reel
2000
1000
2000
Package Marking
CAT4008W
CAT4008V
CAT4008Y
PIN CONFIGURATION
16-Lead SOIC (W, V), TSSOP (Y)
www.DataSheet4U.com
GND
1
16 VDD
SIN 2
15 RSET
SCLK
3
14 SOUT
XLAT
4
13 BLANK
LED1
5
12 LED8
LED2
6
11 LED7
LED3
7
10 LED6
LED4
8
9 LED5
Notes:
(1) Matte-Tin Plated Finish (RoHS-compliant).
(2) Contact factory for package availability.
Doc. No. MD-5034 Rev. A
2
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
No Preview Available ! |
CAT4008
ABSOLUTE MAXIMUM RATINGS
Parameter
VDD Supply Voltage
Logic input/output voltage (SIN, SOUT, CLK, BLANK, LATCH)
LEDn voltage
DC output current on LED1 to LED8
Storage Temperature Range
Junction Temperature Range
Lead Soldering Temperature (10sec.)
Rating
6
-0.3V to VDD+0.3V
6
150
-55 to +160
-40 to +150
300
Units
V
V
V
mA
°C
°C
°C
RECOMMENDED OPERATING CONDITIONS
www.DataSheet4U.com
Parameter
VDD
Voltage applied to LED1 to LED8
LED current RSET control range
Ambient Temperature Range
Range
3.0 to 5.5
0.4 to 5.5
up to 100
-40 to +85
Units
V
V
mA
°C
ELECTRICAL OPERATING CHARACTERISTICS
DC CHARACTERISTICS
VDD = 5.0V, TAMB = 25 ºC, over recommended operating conditions unless specified otherwise.
Symbol Name
Conditions
Min Typ
ILED-ACC LED Current (any channel)
ILED-MAT
LED Current Matching
(ILED - ILEDAVR) / ILEDAVR
ΔIVDD
ΔIVLED
IDDOFF
LED current regulation vs. VDD
LED current regulation vs. VLED
Supply Current (all outputs off)
IDDON
ILKG
RLATCH
RBLANK
VIH
VIL
VHYS
IIL
Supply Current (all outputs on)
LEDn output Leakage
LATCH Pull-down Resistance
BLANK Pull-up Resistance
Logic high input voltage
Logic low input voltage
Logic input hysteresis voltage
Logic Input leakage current
(CLK, SIN)
VLED = 1V, RSET = 3.08kΩ
VLED = 1V, RSET = 1.54kΩ
VLED = 1V, RSET = 769Ω
VLED = 1V, RSET = 3.08kΩ
VLED = 1V, RSET = 1.54kΩ
VLED = 1V, RSET = 769Ω
VDD within 4.5V and 5.5V
LED current 30mA
VLED within 1V and 3V
LED current 30mA
RSET = 3.08kΩ
RSET = 769Ω
RSET = 3.08kΩ
RSET = 769Ω
VLED = 5V, outputs off
VI = VDD or GND
18
36
-6.0
-1
100
100
0.7xVDD
20
40
80
±1.5
±1.5
±2.0
±0.1
±0.05
2
5.5
2.5
6.2
180
180
0.1xVDD
-5 0
VOH
VOL
VRSET
TSD
THYST
SOUT logic high output voltage
SOUT logic low output voltage
RSET Regulated Voltage
Thermal Shutdown
Thermal Hysteresis
IOH = -1mA
IOL = 1mA
BLANK high, outputs off
VCC-0.3V
1.17
1.20
160
20
Max
22
44
+6.0
8
9
1
300
300
0.3xVDD
5
0.3
1.23
Units
mA
%
%/V
%/V
mA
mA
mA
mA
µA
kΩ
kΩ
V
V
V
µA
V
V
ºC
ºC
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
3
Doc. No. MD-5034 Rev. A
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