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  ON Semiconductor Electronic Components Datasheet  

CAT4103 Datasheet

3-Channel Constant-Current RGB LED Driver

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CAT4103 pdf
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3-Channel Constant-Current RGB LED Driver
CAT4103
FEATURES
„ 3 independent current sinks rated to 25V
„ LED current to 175mA per channel set by
separate external resistors
„ High-speed 25MHz 4-wire serial interface
„ Buffered output drivers to ensure data integrity
„ Cascadable devices
„ Low dropout current source (0.4V at 175mA)
„ 3V to 5.5V logic supply
„ Thermal shutdown protection
„ RoHS-compliant 16-lead SOIC package
APPLICATIONS
„ Multi-color, intelligent LED, architectural
lighting
„ High-visual impact LED signs and displays
„ LCD backlight
DESCRIPTION
The CAT4103 is a 3-channel, linear based constant-
current LED driver designed for RGB LED control,
requiring no inductor and provides a low noise operation.
LED channel currents up to 175mA are programmed
independently via separate external resistors. Low output
voltage operation of 0.4V at 175mA allows for more
power efficient designs across wider supply voltage
range. The three LED pins are compatible with high
voltage up to 25V supporting applications with long
strings of LEDs.
A high-speed 4-wire 25MHz serial interface controls each
individual channel using a shift register and latch
configuration. Output data pins allow multiple devices to
be cascaded and programmed via one serial interface
with no need for external drivers or timing considerations.
The device also includes a blanking control pin (BIN) that
can be used to disable all channels independently of the
interface.
ORDERING INFORMATION
Part
Number
Package
Quantity
per Reel
CAT4103V-GT2 SOIC-16* 2,000
* Lead Finish NiPdAu
Package
Marking
CAT4103V
Thermal shutdown protection is incorporated in the device
to disable the LED outputs whenever the die temperature
exceeds 150ºC.
The device is available in a 16-lead SOIC package.
PIN CONFIGURATION
16-Lead SOIC (W)
Top View
GND
BIN
LIN
SIN
CIN
RSET3
RSET2
RSET1
1
2
3
4
5
6
7
8
16 VDD
15 BOUT
14 LOUT
13 SOUT
12 COUT
11 LED1
10 LED2
9 LED3
TYPICAL APPLICATION CIRCUIT
VIN
5V to 25V
VDD
3V to 5.5V
CONTROLLER
C1
1µF
VDD
RED
LED1
GREEN BLUE
LED2
LED3
BIN BOUT
LIN LOUT
CAT4103
SIN SOUT
CIN COUT
GND RSET1 RSET2 RSET3
R1 R2 R3
NEXT
CAT4103
DEVICE
© 2008 SCILLC. All rights reserved.
Characteristics subject to change without notice
1
Doc. No. MD-5038, Rev. A


  ON Semiconductor Electronic Components Datasheet  

CAT4103 Datasheet

3-Channel Constant-Current RGB LED Driver

No Preview Available !

CAT4103 pdf
CAT4103
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ABSOLUTE MAXIMUM RATINGS
Parameter
VDD Voltage
Input Voltage Range (SIN, BIN, CIN, LIN)
Output voltage range (SOUT, BOUT, COUT, LOUT)
LED1, LED2, LED3 Voltage
DC Output Current on LED1 to LED3
Storage Temperature Range
Junction Temperature Range
Lead Soldering Temperature (10sec.)
ESD Rating: All Pins
Human Body Model
Machine Model
Rating
6
-0.3V to VDD+0.3V
-0.3V to VDD+0.3V
25
200
-55 to +160
-40 to +150
300
Units
V
V
V
V
mA
°C
°C
°C
2000
200
V
RECOMMENDED OPERATING CONDITIONS
Parameter
Range
Units
VDD
Voltage applied to LED1 to LED3, outputs off
Voltage applied to LED1 to LED3, outputs on
Output Current on LED1 to LED3
Ambient Temperature Range
3.0 to 5.5
up to 25
up to 6*
2 to 175
-40 to +85
V
V
V
mA
°C
* Keeping the LEDx pin voltage below 6V in operation is recommended to minimize thermal dissipation in the package.
ELECTRICAL OPERATING CHARACTERISTICS
DC CHARACTERISTICS
Min and Max values are over recommended operating conditions unless specified otherwise.
Typical values are at VIN = 5.0V, TAMB = 25°C
Symbol Name
Conditions
Min Typ Max Units
IDD1 Supply Current Outputs Off
IDD2 Supply Current Outputs Off
IDD3 Supply Current Outputs On
IDD4 Supply Current Outputs On
ILKG LED Output Leakage
RLIN LIN Pull-down Resistance
RBIN BIN Pull-up Resistance
VLED = 5V, RSET = 24.9k
VLED = 5V, RSET = 5.23k
VLED = 0.5V, RSET = 24.9k
VLED = 0.5V, RSET = 5.23k
VLED = 5V, Outputs Off
-1
140
140
25
4 10
25
4 10
1
180 250
180 250
mA
mA
mA
mA
µA
k
k
VIH Logic high input voltage
VIL Logic low input voltage
0.3x VDD
0.7x VDD V
IIL
Logic Input Leakage Current
(CIN, SIN)
VI = VDD or GND
-5 0 5 µA
VOH xOUT Logic High Output Voltage IOH = -1mA
VOL xOUT Logic Low Output Voltage IOL = 1mA
VCC-0.3V
0.3 V
VRSET
TSD
THYS
RSETx Regulated Voltage
Thermal Shutdown
Thermal Hysteresis
1.17 1.2 1.23
150
20
V
°C
°C
ILED/IRSET RSET to LED Current Gain ratio 100mA LED Current
400
VUVLO
Undervoltage Lockout (UVLO)
Threshold
1.8 V
Doc. No. MD-5038, Rev. A
2 © 2008 SCILLC. All rights reserved.
Characteristics subject to change without notice


Part Number CAT4103
Description 3-Channel Constant-Current RGB LED Driver
Manufacturer ON Semiconductor
Total Page 13 Pages
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