中文
EnglishI2C控制6V/5A快速响应同步降压转换器CXSD6238是一款专为4-8核高速ARM CPU供电的，低压输出高效率的，输出峰值电流可达5A的同步降压转换器。CXSD6238集成了高速I2C控制接口，输出电压可以通过此接口任意调整。同时其全新的结合电压模式和COT优点的控制模式实现了高速的负载瞬态响应。该芯片还具有输入过压保护功能，防止在机顶盒5V输入应用中热插拔损坏IC。
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）</span>
5.产品封装 6.电路原理图</strong> 7.相关产品
CXSD6238是一款专为4-8核高速ARM CPU供电的，低压输出高效率的，输出峰值电流可达5A的同步降压转换器。CXSD6238集成了高速I2C控制接口，输出电压可以通过此接口任意调整。同时其全新的结合电压模式和COT优点的控制模式实现了高速的负载瞬态响应。该芯片还具有输入过压保护功能，防止在机顶盒5V输入应用中热插拔损坏IC。CXSD6238采用2mm x 1.6mm的CSP-20封装，电感只需要0.33-0.47uH，占板面积极小，是主控CPU最佳的供电选择。</span>
The CXSD6238 is a high-efficiency, DC-to-DC step-down switching regulator, capable of delivering up to 5A of pulse load. It integrates an I 2 C interface that dynamically scales the output voltages on demand. The DCDC control block belongs to a new breed of high frequency synchronous Step-Down converter that combines the advantages of voltage mode control and Constant-OnTime control. Its adaptive Constant-On-Time control dynamicallychanges switch on time to achievea constant switching frequency. It does not have the minimum ontime constrain normally a fixed-frequency current mode Step-down requires, allowing it to go down to very low duty ratio without affecting loop stability. The voltage mode nature also provides a more superior load transient response and a seamless transition from PFM to PWM modes. Cycle-by-cycle current limit provides output short-circuit protection and an input OVP function guards CXSD6238 against possible input voltage surge. CXSD6238 is housed in a 2mm x 1.6mm CSP-20 Package
◆</span>I2C控制
◆</span>5A峰值输出</span>
◆</span>电流自适应COT控制方式
◆</span>高速负载瞬态响应</span>
◆</span>高达95%的转换效率</span>
◆</span>2.2MHz开关频率</span>
◆</span>轻载高效模式下空载待机电流65uA
◆</span>内部补偿
◆</span>使用0.33-0.47uH电感
◆</span>I 2 C Dynamic Output Control
◆</span> Synchronous High Efficiencyup to 95%
◆</span> Fast load transient response
◆</span> Capable of Delivering 5A
◆</span> Input OVP at 6V
◆</span>No External Schottky Diode Needed
◆</span> Thermal shutdown and UVLO
◆</span> CSP-20 (4x5) package
◆</span>智能手机
◆</span>MTK6592 1.7-2.0GHz 8核 供电
◆</span>平板电脑
◆</span>智能机顶盒</span>
◆</span>2K-4K LCDTV
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</span>！</span>
| DC-DC>同步降压 | |||||||
| Device | Device | Architecture | VIN | VIN | VOUT | VOUT | IOUT |
| Description | (min) | (max) | (min) | (max) | (max) | ||
| (V) | (V) | (V) | (V) | (A) | |||
| CXSD62018 | I2C 18V/2.5A同步降压 | I2C控制 | 4.2 | 18 | 0.7 | 12 | 2.5 |
| CXSD6219 | 18V/2A同步降压 | 外部补偿 | 4.2 | 18 | 0.923 | 6 | 2 |
| CXSD6219B | 18V/2.5A同步降压 | 外部补偿 | 4.2 | 18 | 0.923 | 6 | 2 |
| CXSD6220 | 18V/3A同步降压 | 外部补偿 | 4.2 | 18 | 0.923 | 6 | 3 |
| CXSD6221 | 18V/4A同步降压 | 外部补偿 | 4.2 | 18 | 0.923 | 9 | 4 |
| CXSD6222 | 18V/2A同步降压 | 内部补偿 | 4.2 | 18 | 0.8 | 6 | 2 |
| CXSD6223 | 24V/1.2A异步降压 | 内部补偿 | 4.2 | 24 | 0.81 | 6 | 1.2 |
| CXSD6224 | 24V/0.3A异步降压 | 内部补偿 | 4.2 | 24 | 0.81 | 6 | 0.3 |
| CXSD6225 | 42V/1.5A异步降压 | 内部补偿 | 4.2 | 38 | 0.8 | 6 | 1.5 |
| CXSD6226 | 36V/3A异步降压 | 内部补偿 | 4.2 | 36 | 0.85 | 12 | 3 |
| CXSD6227 | 36V/3.5A异步降压 | 内部补偿 | 4.2 | 36 | 0.8 | 12 | 3.5 |
| CXSD6228 | 42V/0.6A异步降压 | 内部补偿 | 4.2 | 38 | 0.8 | 12 | 0.6 |
| CXSD6229 | 42V/0.6A异步降压 | 内部补偿 | 4.2 | 38 | 0.8 | 12 | 0.6 |
| CXSD6230 | 42V/0.4A异步降压 | 内部补偿 | 4.2 | 38 | 0.8 | 6 | 0.4 |
| CXSD6231 | 7V/1.2A同步降压 | 内部补偿 | 2.6 | 7 | 0.6 | 5 | 1.2 |
| CXSD6232 | 6V/1.2A同步降压 | 内部补偿 | 2.6 | 6 | 0.6 | 5 | 1 |
| CXSD6233 | 6V/2A 3MHz同步降压 | 内部补偿 | 2.6 | 5.5 | 0.6 | 5 | 2 |
| CXSD6234 | 6V/2A 3MHz同步降压 | 内部补偿 | 2.6 | 5.5 | 0.6 | 5 | 2 |
| CXSD6235 | 6V/3A同步降压 | 外部补偿 | 3.6 | 6 | 0.8 | 5 | 3 |
| CXSD6235A | 6V/3A同步降压 | 外部补偿 | 2.5 | 6 | 0.8 | 5 | 3 |
| CXSD6235B | 6V/3A同步降压 | 外部补偿 | 2.5 | 6 | 0.8 | 5 | 3 |
| CXSD6236 | 6V/3.5A快速响应同步降压</td> | 内部补偿 | 2.6 | 5.5 | 0.45 | 5 | 3.5 |
| CXSD6237 | 6V/1.2A同步降压 | 内部补偿 | 2.6 | 6 | 0.6 | 5 | 1 |
| CXSD6238 | I2C控制5A快速响应同步降压</td> | 内部补偿 | 2.5 | 5.5 | 0.6 | 1.23 | 3.5 |
| CXSD6239 | 6V/1.2A同步降压 | 内部补偿 | 2.6 | 6 | 0.6 | 5 | 1 |
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