CAT4104 Datasheet, PDF (1/13 Pages) ON Semiconductor – 700 mA Quad Channel Constant Current LED Driver

CAT4104
700 mA Quad Channel
Constant Current LED Driver
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 150°C.
The device is available in the 8−pad TDFN 2 mm x 3 mm package
and the SOIC 8−Lead 150 mil wide package.
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
• TDFN 8−pad 2 x 3 mm and SOIC 8−lead Packages
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Applications
• Automotive Lighting
• General and Architectural Lighting
• LCD Backlight
VCC
3 V to 25 V
LEDs
VIN
5V
OFF _ON
R1
768 W
CAT4104
VIN
LED1
LED2
EN/PWM
LED3
RSET
LED4
GND
175 mA
Figure 1. Typical Application Circuit
http://onsemi.com
SOIC−8
V SUFFIX
CASE 751BD
TDFN−8
VP SUFFIX
CASE 511AK
PIN CONNECTIONS
1
LED1
RSET
LED2
VIN
LED3
EN/PWM
LED4
GND
SOIC 8−lead
(Top View)
LED1
LED2
LED3
LED4
1
TDFN 8−pad
(Top View)
RSET
VIN
EN/PWM
GND
MARKING DIAGRAMS
CAT4104V
HC
CAT4104V = CAT4104V
HC = CAT4104VP2
ORDERING INFORMATION
Device
CAT4104V−GT3
(Note 1)
Package
SOIC−8
(Pb−Free)
Shipping
3,000/
Tape & Reel
CAT4104VP2−GT3 TDFN−8
3,000/
(Note 1)
(Pb−Free) Tape & Reel
1. Lead Finish is NiPdAu
© Semiconductor Components Industries, LLC, 2010
1
March, 2010 − Rev. 2
Publication Order Number:
CAT4104/D