CAT310
10 Channel Automotive LED Display Driver
FEATURES
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Automotive “load dump” protection (40V)
10 independent LED channels
Up to 50mA output per channel
Overvoltage detection at 19V
Serial interface for channel programming
Daisy chain output for multi-driver cascading
LED blanking control
Operating temperature from -40ºC to +125ºC
20-pin SOIC package
PRODUCT DESCRIPTION
The CAT310 is a 10-channel LED driver for
automotive and other lighting applications. All
LED output channels are driven from a low on-
resistance open-drain High Voltage CMOS
Nch-FETs and are fully compliant with “Load
Dump” transients of up to 40 volts. The LED
bias current of each channel can be set
independently using an external series ballast
resistor, making the device ideal for multi-color
instrumentation displays.
A high-speed serial interface (suitable with both
3.3 volt and 5 volt systems) feeding a 10 bit
shift register is used to program the desired
state (on/off) of each channel. The device offers
a blanking control pin (BLANK) which can be
used to disable all channels on demand. A
serial output data pin (SOUT) is provided to
daisy-chain devices in large cluster LED
applications
During initial power up all channels are reset
and cleared via an under-voltage lock out
(UVLO) detector and for added protection all
channels are disabled in the event of a battery
over-voltage condition (19 volts or more).
APPLICATIONS
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Automotive lighting
White and other color high brightness LEDs
Multi-color high-brightness LED cluster displays
General LED lighting
ORDERING INFORMATION
Part
Number
CAT310J
CAT310W
Package
SOIC-20
SOIC-20
Lead free
Quantity
per Reel
1000
1000
Package
Marking
CAT310J
CAT310W
TYPICAL APPLICATION CIRCUIT
PIN DIAGRAM
SOIC 20-pin package
© 2005 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
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Doc No. 25087, Rev. 00
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