a8504 Allegro MicroSystems, Inc., a8504 Datasheet - Page 6

• Manufacturer Part Number: a8504
• Description: Wled/rgb Backlight Driver For Medium Size Lcds
• Manufacturer: Allegro MicroSystems, Inc.

A8504
100
95
90
85
80
75
95
90
85
80
75
70
95
90
85
80
75
70
95
90
85
80
75
70
0
0
0
0
20
20
20
20
40
40
40
40
Duty Cycle (%)
Duty Cycle (%)
Duty Cycle (%)
Duty Cycle (%)
60
60
60
60
V
V
V
V
WLED/RGB Backlight Driver for Medium Size LCDs
IN
IN
IN
IN
= 5 V, 6 ch. with 7 LEDs per ch., 40 mA per ch., f
= 5 V, 6 ch. with 7 LEDs per ch., 40 mA per ch., f
= 5 V, 8 ch. with 8 LEDs per ch., 40 mA per ch., f
= 5 V, 8 ch. with 8 LEDs per ch., 40 mA per ch., f
Efficiency with PWM dimming: PLED/PBAT, V
Performance Characteristics
80
80
80
80
V
V
V
V
BAT
BAT
BAT
BAT
(V)
(V)
(V)
(V)
15
21
15
21
15
21
15
21
9
9
9
9
100
100
100
100
100
95
90
85
80
75
70
95
90
85
80
75
95
90
85
80
75
70
95
90
85
80
75
70
0
0
0
0
IN
Expanded View, Lower Range: Duty Cycle (%)
Expanded View, Lower Range: Duty Cycle (%)
Expanded View, Lower Range: Duty Cycle (%)
Expanded View, Lower Range: Duty Cycle (%)
= 5 V
2
2
2
2
SW
SW
SW
SW
= 1 MHz
= 2 MHz
= 1 MHz
= 2 MHz
4
4
4
4
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
6
6
6
6
8
8
8
8
V
V
V
V
BAT
BAT
BAT
BAT
(V)
(V)
(V)
(V)
15
21
15
21
15
21
15
21
9
9
9
9
10
10
10
10
6