CXSU6390允许更大的输出电流。其采用了1MHz的振荡频率，使用2.2uH电感可以实现输出很小的纹波。同时集成了锂电池低电压保护功能，以及USB的D+/D-接口可同时模拟出BC1.2 DCP / 苹果5V 2.4A / 三星平板充电器的充电接口。是非常适合移动电源，平板电脑，MIFI等大容量锂电池系统，需要在USB接口提供2A电流的应用系统中
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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
CXSU6390是功能，引脚雷同于CXSU6388的一颗5V/2.5A的真关断同步升压稳压器。相比于CXSU6388，CXSU6390允许更大的输出电流。其采用了1MHz的振荡频率，使用2.2uH电感可以实现输出很小的纹波。同时集成了锂电池低电压保护功能，以及USB的D+/D-接口可同时模拟出BC1.2 DCP / 苹果5V 2.4A / 三星平板充电器的充电接口。是非常适合移动电源，平板电脑，MIFI等大容量锂电池系统，需要在USB接口提供2A电流的应用系统中。
CXSU6390 is an CX Solutions’ high efficiency, high frequency synchronous Step-Up converter, capable of delivering output current up to 2.5A at a 5V output from input as low as 3.3V. With a low Rdson Power MOS and a built-in synchronous rectifier, its efficiencycan be as high as 93% at a 5V/2.1A 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. CXSU6390 also integrates an USB emulator that provides correct electricalsignatureon the D+/D- for charging compliant devices. CXSU6390 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
◆输出电压固定5V
◆输出电流最大2.5A
◆开关频率1MHz
◆静态功耗120uA
◆兼容BC1.2/苹果5V2.4A/三星平板
◆输入电压范围3.1-4.5V
◆锂电池低电压保护
◆DFN3x3-12
◆Up to 97% Energy Converting Efficiency
◆ Up to 2.5A output current at 5V output, 3.3V input
◆ Dedicated Charging Port (DCP) emulator
◆ True Shut off during shutdown and output shortcircuit protection
◆ Thermal Shutdown DFN3x3-12
三.应用范围
◆移动电源
◆平板电脑
◆MIFI移动无线路由
◆电子烟
◆其他大容量锂电池系统
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 |
