EUP3466A-CC/CV模式降压型DC-DC变换器 DataSheet 

概述
EUP3466A是一款工作在CC或CV模式的降压型DC-DC变换器，可以提供高达3A的负载电流，其具有很好的线性和负载调整率。EUP3466A可以在宽输入电压范围8V～36V内稳定工作，
EUP3466A提供了通过外部电阻分压器实现的可编程线缆补偿，而当输出电压超过额定电压时，同样通过外部电阻分压实现开关关断。
EUP3466A在故障预防与处理方面，具有二次循环峰值电流限制、短路保护以及过温关断等保护机制。芯片在关断模式下的静态电流可低至3µA以下。芯片内部软启动有效减小了输入浪涌电流和启动时的输出过冲。
EUP3466A 采用SOP-8封装。

特点
• 输入电压范围：8V至36V
• 输入电压浪涌低至40V
• 恒定120KHZ的开关转换频率
• CC/CV(固定电流/固定电压)模式选择
• 高达3A的输出电流
• 电压参数精度：+/-1%
• 恒定电流精度：+/-4%
• 可编程线缆补偿
• 内部软启动
• 输出过压保护
• 实时监测级的短路保护
• 二次循环峰值电流控制
• 过热关断
• SOP-8封装
• 符合RoHS规范及Pb-Free

应用
• 车载充电
• 便携式电子产品充电
• 带有峰值电流限制的DC/DC转换器

EUP3466A-CC/CV Mode Step-Down Converter 

Description
The EUP3466A is a step-down converter capable of driving 3A continuous load with excellent line and load regulation. The EUP3466A operates in either CC (Constant Current) mode or CV (Constant Voltage) mode with an input voltage range from 8V to 36V.
The EUP3466A provides programmable cable compensation by adjusting external resistor divider.
The EUP3466A stops switching when the output reaches over voltage threshold which is programmed by external resistor divider. Fault protection includes secondary cycle-by-cycle current limit, short circuit protection and thermal shutdown. In shutdown mode the regulator draws 3μA of supply current. Internal soft-start minimizes the inrush supply current and the output overshoot at initial startup.
The EUP3466A is available in SOP-8 package.

Feature
• 8V to 36V Wide Input Operating Range
• 40V Input Voltage Surge
• Fixed 120kHz Switching Frequency
• CC/CV Mode Control
• Up to 3A Output Current
• +/- 1% Voltage Reference Accuracy
• +/- 4% Constant Current Accuracy
• Programmable Cable Compensation
• Internal Soft Start
• Output Over Voltage Protection
• Foldback Short Circuit Protection
• Secondary Cycle-by-Cycle Current Limit
• Thermal Shutdown
• Available SOP-8 Package
• RoHS Compliant and 100% Lead(Pb)-Free Halogen-Free

Application
• Car Charger
• Portable charger applications
• DC/DC converters with current limited