YB1303
Low Dropout LED Driver
Typical Performance Characteristics
V
IN
=3.3 to 5.5V, V
EN
=3V, T
A
=25°C, unless otherwise noted. V
F
is LED forward voltage.
Iset vs. Control Voltage
(R
SET
=17.4k, Vcathode=0.3V)
160
140
120
22
20
18
LED Current vs. LED Cathode Voltage
(Vcontrol=3V, VEN=3V)
Rset=17.4k
Iset=100uA
LED Current (mA)
16
14
12
10
8
6
4
2
0
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
1.80
2.00
2.20
100
Iset (uA)
80
60
40
20
0
0.0
0.5
1.0
1.5
2.0
Vcontrol (V)
2.5
3.0
3.5
4.0
Cathode Voltage (V)
LED Current vs. Enable Voltage
(Vcontrol=3V, Vcathode=0.3V, Rset=17.4k)
22
20
18
16
LED Current (mA)
LED Current (mA)
45
40
35
30
25
20
15
10
5
0
LED Current vs. Rset
(VEN=3V, Vcontrol=3V)
14
12
10
8
6
4
2
0
0
1
2
3
VEN Voltage (V)
4
5
6
Vcathode=0.3
Vcathode=0.5
Vcathode=1
0
10
20
30
40
Rset (kOhms)
50
60
70
80
Control Voltage Transient Response
Enable Voltage Transient Response
YB1303 Rev.1.0
www.yobon.com.tw
4
YOBON [ YOBON TECHNOLOGIES,INC. ]
