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  ON Semiconductor Electronic Components Datasheet  

CAT4104 Datasheet

700mA Quad Channel Constant Current LED Driver

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CAT4104 pdf
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700 mA Quad Channel Constant Current LED Driver
CAT4104
FEATURES
„ 4 matched LED current sinks up to 175 mA
„ Up to 25 V operation on LED pins
„ Low dropout Current Source (0.4 V at 175 mA)
„ LED current set by external resistor
„ High frequency PWM dimming via EN/PWM
„ “Zero” current Shutdown mode
„ Thermal shutdown protection
„ RoHS-compliant TDFN 8-Pad 2 x 3 mm and
SOIC 8-Lead packages
APPLICATIONS
„ Automotive Lighting
„ General and Architectural Lighting
„ LCD backlight
ORDERING INFORMATION
Part
Number
Package
Quantity
per Reel
Package
Marking
CAT4104V-GT3 SOIC-8*
CAT4104VP2-GT3 TDFN-8*
3,000
3,000
CAT4104V
HC
* Lead Finish is NiPdAu
DESCRIPTION
The CAT4104 provides four matched low dropout current
sinks to drive high-brightness LED strings up to 175 mA
per channel. The LED channel current is set by an
external resistor connected to the RSET pin. The LED
pins are compatible with high voltage up to 25 V
supporting applications with long strings of LEDs.
The EN/PWM logic input supports the device enable and
high frequency external Pulse Width Modulation (PWM)
dimming control.
Thermal shutdown protection is incorporated in the device
to disable the LED outputs whenever the die temperature
exceeds 150ºC.
The device is available in the 8-pad TDFN 2 mm x 3 mm
package and the SOIC 8-Lead 150 mil wide package.
PIN CONFIGURATION
TDFN 8-Pad (Top View)
LED1 1
LED2 2
LED3 3
LED4 4
8 RSET
7 VIN
6 EN/PWM
5 GND
SOIC 8-Lead (Top View)
LED1
1
8 RSET
LED2
2
7 VIN
LED3
3
6 EN/PWM
LED4
4
5 GND
TYPICAL APPLICATION CIRCUIT
VCC
3 V to 25 V
LEDs
VIN
5V
OFF ON
R1
768
CAT4104
VIN LED1
LED2
EN/PWM
LED3
RSET
LED4
GND
175 mA
© 2009 SCILLC. All rights reserved.
Characteristics subject to change without notice
1
Doc. No. MD-5041 Rev. B


  ON Semiconductor Electronic Components Datasheet  

CAT4104 Datasheet

700mA Quad Channel Constant Current LED Driver

No Preview Available !

CAT4104 pdf
CAT4104
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ABSOLUTE MAXIMUM RATINGS
Parameter
VIN, RSET, EN/PWM Voltages
LED1, LED2, LED3, LED4 Voltages
Storage Temperature Range
Junction Temperature Range
Lead Temperature
Rating
-0.3 to 6
-0.3 to 25
-65 to +160
-40 to +150
300
Unit
V
V
°C
°C
°C
RECOMMENDED OPERATING CONDITIONS
Parameter
VIN
Voltage applied to LED1 to LED4, outputs off
Voltage applied to LED1 to LED4, outputs on
Ambient Temperature Range
ILED per LED pin
Rating
3.0 to 5.5
up to 25
up to 6*
-40 to +85
10 to 175
Unit
V
V
V
°C
mA
* Keeping LEDx pin voltage below 6 V in operation is recommended to minimize thermal dissipation in the package.
Typical application circuit with external components is shown on page 1.
ELECTRICAL OPERATING CHARACTERISTICS
Min and Max values are over the recommended operating conditions unless specified otherwise.
Typical values are at VIN = 5.0 V, TAMB = 25°C
Symbol Name
Conditions
Min Typ
ILED-ACC LED Current Accuracy
ILEDNOM ILED
ILEDNOM
ILED-DEV LED Channel Matching
ILED ILEDAVG , note 1
ILED
VDOUT Dropout Voltage
ILED = 175 mA
VRSET RSET Pin Voltage
IQ Quiescent Current
No LED, RSET = Float
No LED, RSET = 770
IQSHDN Shutdown Current
VEN = 0V
REN/PWM
VHI
VLO
EN/PWM Pin
Internal pull-down resistance
Logic High Level
Logic Low Level
TSD Thermal Shutdown
THYS Thermal Hysteresis
ILED/IRSET RSET to LED Current gain ratio
25 mA LED current
VUVLO Undervoltage lockout (UVLO) threshold
Note 1: Min and Max values are tested for ILED = 50 mA, VIN = 3.5 V, VLEDx = 0.4 V, TAMB = 25°C.
-5
1.17
1.3
±2
±1
400
1.2
0.6
6
200
150
20
100
2.0
Max Units
%
+5 %
1.23
1
mV
V
mA
mA
µA
k
V
0.4 V
°C
°C
V
Doc. No. MD-5041 Rev. B
2 © 2009 SCILLC. All rights reserved.
Characteristics subject to change without notice


Part Number CAT4104
Description 700mA Quad Channel Constant Current LED Driver
Maker ON Semiconductor
Total Page 14 Pages
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