Diodes AP2502 - Manual (Page 6)

Data Sheet
4-CH Linear Constant Current Sink With Matching AP2502
Oct. 2010 Rev 1. 1 BCD Semiconductor Manufacturing Limited
6
-40 -20 0 20 40 60 80 100 120 140
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
LED Open
V
EN
=3V
Q
u
ie
sc
e
n
t Current
(
µ A)
Case Temperature ( o C)
1 2 3 4 5 6 7
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
LED Open
T
C
=-40 o C
T
C
=25 o C
T
C
=85 o C
Q
u
ie
sc
ent Current
(
µ A)
Enable Voltage (V)
0 100 200 300 400 500 600 700 800 900 1000
0
2
4
6
8
10
12
14
16
18
20
22
V
EN
=3V
T
C
=-40 o C
T
C
=25 o C
T
C
=85 o C
I LE
D
(m
A)
Output Voltage (mV)
-40 -20 0 20 40 60 80 100 120
19.0
19.2
19.4
19.6
19.8
20.0
20.2
20.4
20.6
20.8
21.0
V
EN
=3V
V
IN
=4V
I LE
D
(mA
)
Case Temperature ( O C)
Typical Performance Characteristics
Figure 4. Quiescent Current vs. Case Temperature Figure 5. Quiescent Current vs. Enable Voltage
Figure 6. LED Current vs. Case Temperature Figure 7. LED Current vs. Output Voltage