A8503
High Efficiency 6-Channel, 2 MHz, WLED/RGB Driver for
Medium Displays, with Integrated 55 V Power Switch
Characteristic Performance
High Efficiency Boost Converter
Efficiency (POUT/PBAT) versus Battery Supply Voltage
for Various Output Power Levels
L1 = 6.8 μH, fSW = 1.5 MHz, VIN = 5.0 V
96
95
94
93
92
91
90
89
88
87
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
VBAT (V)
VOUT IOUT
(V) (mA)
25 120
25 100
30 120
30 100
Efficiency (POUT/PBAT) versus Battery Supply Voltage
for Various Switching Frequencies
VIN = 5.0 V, VOUT = 30 V IOUT = 120 mA
96
95
94
93
92
91
90
89
88
87
86
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
VBAT (V)
ISW
(MHz)
1.5
1.0
2.0
Allegro MicroSystems, Inc.
8
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com