Cxle8617 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 less than 100V. Patented high-end current detection, fixed frequency, current mode PWM control mode,
It has excellent linear adjustment rate and load adjustment rate. The chip adopts the unique constant current control mode, which makes the LED output current accuracy within ?3%. The frequency buffing function integrated in the chip can reduce the cost of EMI. Built in loop compensation and slope compensation, no external compensation, simple application design. The typical working frequency of the chip is about 200kHz
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[ CXLE8617 ]"
目录
1.产品概述 2.产品特点 3.应用范围 4.技术规格书下载（PDF文档）
一.产品概述
CXLE8617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。
CXLE8617采用SOT23-5封装。
二.产品特点
高端电流检测
输出电流：小于3A
输入电压：6~100V
LED均值电流控制：恒流效果好
LED输出电流精度：±3%
高效率：最高可达95%以上
电流模PWM控制
固定工作频率
抖频功能
内置环路补偿、斜坡补偿
芯片供电欠压/过压保护
三.应用范围
LED射灯、路灯及其它LED照明
自行车灯，电动车灯，摩托车灯，汽车灯
四.技术规格书（产品PDF)
需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！
五.产品封装图
六.电路原理图
七.相关芯片选择指南
| LED驱动 > 降压恒流 | ||||||
| 产品型号 | 输入电压 | 输出电压 | 输出电流 | 工作效率 | 产品封装 | 备注 |
| CXLE8615/CXLE8616 | 92% | ESOP8 | ||||
| CXLE8617 | 6-100v | 低于输入 | 3A | 95 | sot23-6 | 可做足3A |
| CXLE8618 | 2.5-100V | 低于输入电压 | 几十毫安到 2.5A | 90% | SOT23-6 | 降压恒流 |
| CXLE8619 | 5.5-36V | 低于输入电压 | 800mA | 95% | SOP-8 | 降压恒流 |
| CXLE8620 | 5.5-36V | 低于输入电压 | 3A | 95% | SOT23-6 | 降压恒流 |
