CAT310

© 2005 Catalyst Semiconductor, Inc.

1

Doc No. 25087, Rev. 00

Characteristics subject to change without notice

10 Channel Automotive LED Display Driver

FEATURES

• 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

APPLICATIONS

• Automotive lighting

• White and other color high brightness LEDs

• Multi-color high-brightness LED cluster displays

• General LED lighting

ORDERING INFORMATION

Part

Number

Package

Quantity

per Reel

Package

Marking

CAT310J

SOIC-20

1000

CAT310J

CAT310W

SOIC-20

Lead free

1000

CAT310W

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).

TYPICAL APPLICATION CIRCUIT

PIN DIAGRAM

SOIC 20-pin package