CXSU6389是一款高性价比的5V/2A真关断同步升压稳压器。固定5V输出，锂电池USB升压供电使用。节省外部分压设定电阻。CXSU6389采用真关断技术，实现短路保护和输出限流。省却了接口上的限流保护器。CXSU6389特别适合用于对USB供电较大需求的平板电脑。在输出电压0.5-1.5A时，效率均可保持在90%以上, 同时保持了很小的输出纹波
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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
CXSU6389是一款高性价比的5V/2A真关断同步升压稳压器。固定5V输出，锂电池USB升压供电使用。节省外部分压设定电阻。CXSU6389采用真关断技术，实现短路保护和输出限流。省却了接口上的限流保护器。CXSU6389特别适合用于对USB供电较大需求的平板电脑。在输出电压0.5-1.5A时，效率均可保持在90%以上, 同时保持了很小的输出纹波。CXSU6389专门针对锂电池集成了锂电池低电压保护的功能，以及USB充电识别口，保证同时兼容BC1.2 DCP接口/苹果5V2.4A接口/三星平板充电器接口
CXSU6389 is an CX Solutions’ high efficiency, high frequency synchronous Step-Up converter, capable of delivering output current up to 2A at a 5V output from input as low as 3.3V. With a low Rdson Power MOS and a built-in synchronous rectifier, its efficiency can be as high as 90% at a 5V/2A load. This greatly minimizes power dissipation and reduces heat on the IC, making it ideal for applications that require smallboard space and have stringent temperature constraints, such as power banks and mobile devices. CXSU6389 also integrates an USB emulator that provides correct electricalsignatureon the D+/D- for charging compliant devices. CXSU6389 also incorporates CX Solutions’ True-Shutoff○R technology that protects against overload and short-circuit conditions. All of these features are integrated in a tiny DFN3x3-12 package. With 1MHz switchingfrequency, small external input and output capacitors and inductor can be used.
二.产品特点
◆输入电压3.1-4.5V
◆输出电压固定5V
◆◆输出电流最大2A
◆静态功耗120uA
◆开关频率 1MHz
◆兼容BC1.2/苹果5V2.4A/三星P平板
◆集成锂电池低电压保护
◆DFN3x3-12封装
◆Up to 97% Energy Converting Efficiency
◆ Up to 2A output current at 5V output, 3.3V input
◆ Dedicated Charging Port (DCP) emulator with BC1.2 compliant
◆ True Shut off during shutdown and output shortcircuit protection
◆ Thermal Shutdown
◆ DFN3x3-12
三.应用范围
◆平板电脑
◆MIFi移动无线路由器
◆移动智能终端
◆移动电源
◆电子烟
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
| DC-DC>同步升压 | |||||||||||
| Device | Device | Architecture | VIN | VOUT | Isw | Vfb | Switching | IQ | Package | ||
| Description | (min) | (max) | (min) | (max) | (max) | (V) | Frequency | (uA) | |||
| (V) | (V) | (V) | (V) | (A) | (Hz) | ||||||
| CXSU6382 | 12W/20V异步升压 | 外部补偿 | 2.7 | 5.5 | Vin | 20 | 可调 | 0.6 | 可调 | 600 | ESOP8 |
| CXSU6383 | 10uA Iq 同步升压 | 内部补偿 | 0.85 | 4.5 | 2.1 | 5 | 0.7 | 0.6 | 1M | 10 | SOT23-5 |
| CXSU6384 | 500mA同步升压 | 内部补偿 | 0.85 | 4.5 | 2.1 | 5 | 1 | 0.6 | 1M | 60 | SOT23-5 |
| CXSU6385 | 500mA 3-Pin同步升压 | 内部补偿 | 0.85 | 4.5 | 3.3 | 5 | 1 | N/A | 1M | 60 | SOT89-3 |
| CXSU6386 | 900mA真关断同步升压 | 内部补偿 | 0.85 | 4.5 | 2.1 | 5 | 1.5 | 0.6 | 2M | 40 | DFN2x2-6 |
| CXSU6387 | 3W真关断同步升压 | 内部补偿 | 0.85 | 4.5 | 2.1 | 5 | 1.5 | N/A | 2M | 40 | SOT23-5 |
| CXSU6388 | 5V/2.5A真关断同步升压 | 内部补偿 | 2.65 | 4.5 | 5 | 5 | 5 | N/A | 1M | 120 | DFN3x3-12 |
| CXSU6389 | 5V/2A真关断同步升压 | 内部补偿 | 3.1 | 4.5 | 5 | 5 | 5 | N/A | 1M | 120 | DFN3x3-12 |
| CXSU6390 | 5V/2.5A真关断同步升压 | 内部补偿 | 3.1 | 4.5 | 5 | 5 | 5 | N/A | 1M | 120 | DFN3x3-12 |
| CXSU6391 | 5V/2.5A真关断同步升压 | 内部补偿 | 1.8/3.1 | 5 | Vin | 5.5 | 6 | 0.6 | 1M | 50 | DFN3x3-12 |
| CXSU6392 | 5V/2.5A真关断同步升压 | 内部补偿 | 1.8/3.1 | 5 | Vin | 5.5 | 6 | 0.6 | 1M | 50 | QFN3x3-16 |
| CXSU6393 | 5V/2.5A真关断同步升压 | 纯PWM/内部补偿 | 1.8/3.1 | 5 | Vin | 5.5 | 6 | 0.6 | 1M | 10000 | QFN3x3-16 |
| CXLE8201 | 高效单串10颗LED驱动 | 外部补偿 | 2.7 | 6 | Vin | 40 | 0.7 | 0.2 | 600K | 600 | SOT23-6 |
| CXLE8202 | 高效单串10颗LED驱动 | 外部补偿 | 2.7 | 6 | Vin | 40 | 0.7 | 0.2 | 600K | 600 | DFN2x2-6 |
| CXLE8203 | 10W/24V异步升压 | 内部补偿 | 2.7 | 6 | Vin | 24 | 3 | 0.2 | 1M | 250 | SOT23-6 |
| CXLE8204 | 高效单串10颗LED驱动 | 内部补偿 | 2.7 | 6 | Vin | 40 | 1 | 0.2 | 800K | 250 | SOT23-6 |
