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参数资料
型号： MAX16826ATJ+C24
厂商： Maxim Integrated
文件页数： 23/26页
文件大小： 0K
描述： IC LED DVR HB PROGR 32-HQFN
产品培训模块： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装： 60
恒定电流： 是
拓扑： PWM，SEPIC，升压（升压）
输出数： 4
内部驱动器： 无
类型 - 主要： 车载，背光
类型 - 次要： 高亮度 LED（HBLED），RGB，白色 LED
频率： 100kHz ~ 1MHz
电源电压： 4.75 V ~ 24 V
安装类型： 表面贴装
封装/外壳： 32-WFQFN 裸露焊盘
供应商设备封装： 32-TQFN-EP
包装： 托盘
工作温度： -40°C ~ 125°C
MAX16826
Programmable, Four-String HB LED Driver with
Output-Voltage Optimization and Fault Detection
PCB Layout and Routing
Careful PCB layout is important for proper operation.
Use the following guidelines for good PCB layout:
?
Place the feedback and even voltage-divider resis-
tors as close to FB and OVP as possible. The
divider center trace should be kept short. Placing
?
Minimize the area of the high current-switching loop
of the rectifier diode, switching FET, sense resistor,
and output capacitor to avoid excessive switching
noise. Use wide and short traces for the gate-drive
the resistors far away causes the sensing trace to
become antennas that can pick up switching noise.
Avoid running the sensing traces near drain con-
nection of the switching FET.
loop from DL, to the FET gate, and through the cur-
rent-sense resistor, then returning to the IC PGND
and GND.
?
Place the input bypass capacitor as close to the
device as possible. The ground connection of the
bypass capacitor should be connected directly to
?
Connect high-current input and output components
GND with a wide trace.
with short and wide connections. The high-current
input loop is from the positive terminal of the input
capacitor to the inductor, to the switching FET, to
the current-sense resistor, and to the negative ter-
minal of the input capacitor. The high-current output
loop is from the positive terminal of the input capac-
itor to the inductor, to the rectifier diode, to the posi-
tive terminal of the output capacitor, reconnecting
between the output capacitor and input capacitor
ground terminals. Avoid using vias in the high-cur-
rent paths. If vias are unavoidable, use multiple vias
in parallel to reduce resistance and inductance.
Maxim Integrated
?
?
?
Minimize the size of the switching FET drain node
while keeping it wide and short. Keep the drain
node away from the feedback node and ground. If
possible, avoid running this node from one side of
the PCB to the other. Use DC traces as shields, if
necessary.
Provide large enough cooling copper traces for the
external current sink FETs. Calculate the worst-case
power dissipation and allocate sufficient area for
cooling.
Refer to the MAX16826 Evaluation Kit for an exam-
ple of proper board layout.
23
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相关代理商/技术参数
参数描述
MAX16826BATJ/V+ 功能描述:LED照明驱动器 Prog 4-String HB RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MAX16826BATJ/V+T 功能描述:LED照明驱动器 Prog 4-String HB RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MAX16826BATJ+ 制造商:Maxim Integrated Products 功能描述:PROGRAMMABLE, FOUR-STRING HB LED DRIVER WITH OUTPUT-VOLTAGE - Rail/Tube
MAX16826BATJ+T 制造商:Maxim Integrated Products 功能描述:PROGRAMMABLE, FOUR-STRING HB LED DRIVER WITH OUTPUT-VOLTAGE - Tape and Reel
MAX16826EVKIT+ 制造商:Maxim Integrated Products 功能描述:EVAL KIT FOR THE MAX16826 - Boxed Product (Development Kits)
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