本参考设计具有独立的使能信号,可分别控制每串LED。来自:www.icqun.com
图1给出了电路原理图,表1提供了材料清单(BOM)。以下为电气输入要求和输出特性。
VIN:11V至28V
PWMIN:10%至100%
VLED配置:7.6VDC (最小值)至10VDC (最大值),350mA
图1. IC驱动器设计原理图
表1. 材料清单
DesignatorComponentDescriptionFootprintQuantity
C1, C2, C3, C4, C5, C6Nonpolarized
capacitor0.1µF, 25V06036
C10, C11, C12, C13, C14, C15Nonpolarized
capacitor0.1µF, 50V06036
Q1, Q2, Q3, Q4, Q5, Q6Dual PNP
transistorDMMT54016-SOT236
R1, R5, R9, R13, R17, R21Resistor0.5Ω06036
R2, R6, R10, R14, R18, R22Resistor866Ω06036
R3, R7, R11, R15, R19, R23Resistor1.00kΩ06036
R4, R8, R12, R16, R20, R24Resistor40.2Ω06036
U1, U2, U3, U4, U5, U6MAX16836ATEHigh-brightness
LED driver5mm x 5mm, 16-TQFN with exposed pad6
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