T6326A datasheet(2/6 Pages) ETC2

Part #	T6326A

Description	Low-Dropout, Constant-Current White LED with Channel Control

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TE

CH

tm

Preliminary T6326A

TM Technology Inc. reserves the right

P.2

Publication Date: FEB. 2006

to change products or specifications without notice.

Revision: A

PIN ARRANGEMENT(Top view)

EN

CH S W

VD D

1

2

3

6

8

7

LE D 1

LE D 2

LE D 3

VS S

4

5

LE D 4

9

10

VS E T

VS S

MSOP-10L

PIN DESCRIPTION

SYMBOL

MSOP

-10L

DESCRIPTION

VSET

1

VSET terminal is used to connect an extermal resistor to set output current.

The current flowing into VSET sets the bias current into each LED by ILED_= 250 x ISET.

VSET is internally biased to 0.306V. VSET is high impedance when EN is low.

LED1

2

LED 1 Cathode Connection. Current flowing into LED1 is 250 times the current

flowing into SET. LED1 is high impedance when EN is low.

LED2

3

LED 2 Cathode Connection. Current flowing into LED1 is 250 times the current

flowing into SET. LED2 is high impedance when EN is low.

LED3

4

LED 3 Cathode Connection. Current flowing into LED1 is 250 times the current

flowing into SET. LED3 is high impedance when EN is low.

LED4

5

LED 4 Cathode Connection. Current flowing into LED1 is 250 times the current

flowing into SET. LED4 is high impedance when EN is low.

VSS

6,7

Ground

VDD

8

Power supply

EN

9

Enables T6326A signal, H: Ative, L : Power Down .

CHSW

10

Set LED1~4 Channels ON / OFF, the rising edge of CHSW will change next states.

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