t6309a TM Technology Inc., t6309a Datasheet - Page 11

• Manufacturer Part Number: t6309a
• Description: Micropower Step-up Dc/dc Converter
• Manufacturer: TM Technology Inc.

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TYPICAL APPLICATION CIRCUITS
Fig. 2 Typical application for driving 4 white LEDs
Fig. 3 White LED application with DC voltage dimming control
Fig. 4 Typical application for line drivers or LCD bias
TM Technology Inc. reserves the right
to change products or specifications without notice.
5 .5 V
5.5 V
5 .5 V
V
V
V
2 .0
2 .0
2 .0
to
to
to
IN
IN
IN
O F F
O F F
O F F
4 .7 u F
4 .7 u F
4 .7 u F
CH
C
C
C
TE
IN
O N
IN
O N
O N
IN
1 0 u H
1 0u H
1 0 u H
L 1
L1
L 1
6
6
4
6
4
4
V
V
V
C E
C E
C E
IN
IN
IN
T 6 3 0 9 A
T 6 3 0 9 A
T 6 3 0 9 A
G N D
G N D
G N D
S W
S W
S W
2
2
2
O V P
O V P
1
1
O V P
1
F B
F B
FB
D 1
D 1
D 1
4 .7 u F
4 .7 u F
4 .7u F
5
5
3
C
5
3
C
3
C
O U T
O U T
O U T
I
D im m in g
L E D
C ontrol
0V ~ 2 V
1 00 K
R 2
4 5 0 K
3 3 K
= 2 0 m A
2 0 O h m
R 2
R 1
P. 11
25 K
R 1
2 0 m A
R
S
I
L E D
= 2 0 m A
2 5 O h m
R
S
Publication Date: MAY. 2007
T6309A
Revision: A