CAT3606

5

Doc. No. 5009, Rev. B

© 2005 by Catalyst Semiconductor, Inc.

Characteristics subject to change without notice

Table 2: LED Selection

Notes: 1 = logic high (or VIN)

0 = logic low (or GND)

- = LED output OFF

X = don't care

The enable lines

ENM and ENS allow to turn On or

Off a group of LEDs as shown in Table 2.

s

e

n

i

L

l

o

r

t

n

o

C

s

t

u

p

t

u

O

D

E

L

N

EM

N

ES

N

E

n

i

a

M

4

D

E

L

-

1

D

E

L

b

u

S

6

D

E

L

-

5

D

E

L

0X

X

-

-

11

1

-

-

10

1

N

O-

11

0

-

N

O

10

0

N

ON

O

The unused LED channels can also be turned off

by connecting the respective LED pins to VOUT. In

which case, the corresponding LED driver is

disabled and the typical LED sink current is only

about 0.2mA. When the following equation is true

on any channel, the driver turns off the LED channel:

≤ 1V (LED channel OFF)

Note: The CAT3606 is designed to drive LEDs with

forward voltage greater than 1V and is not

compatible with resistive loads.