T6311A Taiwan Memory Technology, T6311A Datasheet - Page 2

• Manufacturer Part Number: T6311A
• Description: Constant-Current White LED Bias Supply
• Manufacturer: Taiwan Memory Technology

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PIN ARRANGEMENT(Top view)
PIN DESCRIPTION
TM Technology Inc. reserves the right
to change products or specifications without notice.
SYMBO
LED3
LED2
LED1
LED4
GND
GND
SET
SET
EN
NC
EN
L
CH
TE
SOP-8
SOT23-6
8
7
6
5
4
3
2
1
1
2
3
Pin no.
SOT23-6
6
5
4
1
2
3
4
5
6
-
-
LED1
LED2
LED3
Enable Input/Power Input. Drive high (> 2.5V) to enable; drive low (< 2.2V) to
disable. When disabled, SET, LED1, LED2, LED3 and LED4 are high impedance.
When enabled, EN is the power input for the T6311A.
Ground
Bias Current Set Input. The current flowing into SET sets the bias current into each
LED by ILED_= 240 x ISET. VSET is internally biased to 1.2V. SET is high
impedance when EN is low.
No connection.
LED 4 Cathode Connection. Current flowing into LED4 is 240 times the current
flowing into SET. LED4 is high impedance when EN is low.
LED 3 Cathode Connection. Current flowing into LED3 is 240 times the current
flowing into SET. LED3 is high impedance when EN is low.
LED 2 Cathode Connection. Current flowing into LED2 is 240 times the current
flowing into SET. LED2 is high impedance when EN is low.
LED 1 Cathode Connection. Current flowing into LED1 is 240 times the current
flowing into SET. LED1 is high impedance when EN is low.
L E D 1
L E D 2
L E D 3
L E D 4
Preliminary Product spec. T6311A
P.2
DESCRIPTION
1
2
3
4
SOP-8
8
7
6
5
Publication Date: JUN. 2005
G N D
E N
S E T
N C
Revision: C