A8502
Wide Input Voltage Range, High Efficiency
Fault Tolerant LED Driver
Efficiency for Various LED Configurations
ILED = 80 mA, LED Vf ≈ 3.2 V
100
95
90
85
80
75
70
5.5
7.0 8.5 10.0 11.5 13.0 14.5 16.0
Input Voltage, VIN (V)
2 strings, 6 series LEDs each
2 strings, 7 series LEDs each
2 strings, 8 series LEDs each
Efficiency for Various LED Configurations
ILED = 100 mA, LED Vf ≈ 3.2 V
100
95
90
85
80
75
70
65
60
5.5 7.0 8.5 10.0 11.5 13.0 14.5 16.0
Input Voltage, VIN (V)
2 strings, 6 series LEDs each
2 strings, 7 series LEDs each
2 strings, 8 series LEDs each
Allegro MicroSystems, Inc.
10
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com