L
L
X
X
Y
Y
2
2
8
8
1
1
6
6
1
1
U
U
S
S
E
E
R
R
’
’
S
S
M
M
A
A
N
N
U
U
A
A
L
L
CONTENTS
1
Product Description.................................................................................................................3
1.1
Features .............................................................................................................................3
1.2
Applied field .....................................................................................................................3
1.3
Basic Structure Description...............................................................................................3
2
LXY28161 Specification..........................................................................................................3
2.1
Block Diagram and Pin Configuration..............................................................................3
2.2
Maximum Rating ..............................................................................................................5
2.3
Electrical Characteristics (V
DD
=5.0V) ..............................................................................6
2.4
Switching Characteristics
（
V
DD
＝
5V
）
..........................................................................7
2.5
Test Circuit for Switching Characteristics ........................................................................8
2.6
Timing Waveform.............................................................................................................9
2.6.1 Serial-Port Timing Waveform.......................................................................................9
2.6.2 Output-Current Channel Timing Waveform .................................................................9
2.7
Constant Current .............................................................................................................10
2.8
Setting Output Current ....................................................................................................10
2.9
Delay Time of Staggered Output ....................................................................................10
2.10
Package Power Dissipation .............................................................................................10
2.11
Usage of Thermal Pad.....................................................................................................10
2.12
Thermal Protection Function...........................................................................................11
2.13
LED Supply Voltage .......................................................................................................11
2.14
Switching Noise Reduction.............................................................................................11
2.15
Equivalent Circuits of Inputs and Outputs ......................................................................12
3
Package Outline .....................................................................................................................12
S
S
H
H
E
E
N
N
Z
Z
H
H
E
E
N
N
L
L
I
I
N
N
G
G
X
X
I
I
N
N
Y
Y
U
U
S
S
C
C
I
I
E
E
N
N
C
C
E
E
A
A
N
N
D
D
T
T
E
E
C
C
H
H
N
N
O
O
L
L
O
O
G
G
Y
Y
C
C
O
O
.
.
,
,
L
L
T
T
D
D
2
4 Attention…………………………………………………………………………………… 14