CXA2108 Sony Corporation, CXA2108 Datasheet - Page 8

• Manufacturer Part Number: CXA2108
• Description: Constant-Current Driver for Full Color LED Display
• Manufacturer: Sony Corporation

Rext
D9, D8 : Data that sets the maximum drive current (Io (FFh))
Iref
Io (FFh) : Maximum drive current that can be set by D0 to D7
Io (00h) : Minimum drive current that can be set by D0 to D7
Istb
Pstb
Po (max) : Maximum power that can be consumed by the driver block
Note) Istb, Pstb and Po (max) are the values when D0 to D7 = 11111111 (FFh).
1
2
Rext [kΩ]
Operation guaranteed current exceeded.
Absolute maximum rating exceeded.
2.0
2.0
2.0
2.0
2.5
2.5
2.5
2.5
3.0
3.0
3.0
3.0
3.5
3.5
3.5
3.5
4.0
4.0
4.0
4.0
In addition, these values assume the case where all channels are set to the same drive current.
: External resistor that sets the DAC reference current (Iref)
: DAC reference current
: Standby current (Internal current consumption excluding the driver block)
: Standby power (Internal power consumption excluding the driver block, Vcc = 5 V)
Iref [mA] = 1.3 [V]/Rext [kΩ]/24
Io (FFh) [mA] = Iref
Io (00h) [mA] = Io(FFh)/2
Istb [mA] = 2.86 + 24
Pstb [W] = 5 [V]
Po (max) [W] = 1.5 [W] – Pstb [W]
Table 2. Drive Current Setting and Power Consumption (when D0 to D7 = FFh)
D9
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
D8
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Istb [mA]/1000
(2
Iref
Io (FFh) [mA]
D9 + D8 + 1)
65.0
86.7
69.3
21.7
43.3
17.3
34.7
52.0
14.4
28.9
43.3
57.8
12.4
24.8
37.1
49.5
10.8
21.7
32.5
43.3
(16/3 + 32.25
1
2
1
Io (00h) [mA]
– 8 –
800
10.8
21.7
32.5
43.3
17.3
26.0
34.7
14.4
21.7
28.9
12.4
18.6
24.8
10.8
16.3
21.7
8.7
7.2
6.2
5.4
(2
D9 + D8 + 1))
Istb [mA]
27.3
48.3
69.2
90.2
22.4
39.2
55.9
72.7
19.1
33.1
47.1
61.1
16.8
28.8
40.8
52.8
15.1
25.6
36.0
46.5
Pstb [W]
0.136
0.241
0.346
0.451
0.112
0.196
0.280
0.364
0.096
0.166
0.235
0.305
0.084
0.144
0.204
0.264
0.075
0.128
0.180
0.233
Po (max) [W]
1.36
1.26
1.15
1.05
1.39
1.30
1.22
1.14
1.40
1.33
1.26
1.19
1.42
1.36
1.30
1.24
1.42
1.37
1.32
1.27
CXA2108Q