qx6103是一款高精度降压型大功率led恒流驱动芯片。适用于输入电压100v以内的大功率led恒流驱动电源。
专利的高端电流检测、固定频率、电流模pwm控制方式,具有优异的线性调整率和负载调整率。
芯片采用的特有恒流控制方式,使得led输出电流精度达到±3%以内。
芯片内部集成的抖频功能可降低emi成本。
内置环路补偿与斜坡补偿,无需外部补偿,应用设计简单。
芯片典型工作频率约200khz。
qx6103采用sot23-5封装。" />

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qx6103 step-down high-power led constant current driver

qx6103 is a high-precision step-down high-power led constant current driver chip. it is suitable for high-power led constant current driving power supply with input voltage within 100v.

patented high-end current detection, fixed frequency, current mode pwm control, with excellent linear regulation rate and load regulation rate.

the unique constant current control method adopted by the chip makes the led output current accuracy within ± 3%.

the frequency-shaking function integrated in the chip can reduce emi costs.

built-in loop compensation and slope compensation, no external compensation is required, and the application design is simple.

the typical working frequency of the chip is about 200khz.

qx6103 is available in sot23-5 package.


ø high-end current detection

ø output current: less than 3a

ø input voltage: 6 ~ 100v

ø led mean current control: good constant current effect

ø led output current accuracy: ± 3%

ø high efficiency: up to 95%

ø current mode pwm control

ø fixed working frequency

ø frequency jitter function

ø built-in loop compensation and slope compensation

ø undervoltage / overvoltage protection of chip power supply


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