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WCH CH213K
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- WCH CH213K
- Type
- WCH
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- WCH
- Electronic Component
- CH213K
- Electronic Component
- 1
- Package
- SOT23-3
- Electronic Component
- Ideal Diode / ORing Controller
- Electronic Component
- 0.136g
- FETType
- Built-in FET
- Electronic Component
- 1
- Features
- Current
- Electronic Component
- BM0264481051
- (Vf)
- 240mV
- Static Current(Iq)
- 3.6uA
- Voltage(Vin)
- 2.2V~5.5V
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
CH213K 产品概述
一、产品简介
CH213K 是南京沁恒（WCH）推出的一款低压差理想二极管（Ideal Diode）芯片，集成内置 FET，面向便携与嵌入式电源保护场景。芯片支持宽输入电压范围 2.2V ～ 5.5V，适用于 5V 系统下不超过 1A 的直流负载保护，能够在输出短路或输入反接时保护后级负载与电源系统。
二、主要参数与性能
- 输入电压 Vin：2.2V ～ 5.5V
- 正向压降 Vf（典型）：240mV
- 导通电阻 RDS(on)：240mΩ
- 静态电流 Iq：3.6μA（低静态功耗）
- 功能特性：过温保护、反向极性保护、短路/过流保护、反向电流阻断
- 封装：SOT23-3
- 典型工作电流能力：在 5V 下可支持不超过 1A 的直流应用（遇过流时有限流保护）
三、功能说明
CH213K 通过内部检测和恒流限制逻辑，在出现短路或负载突变时限制 VO 端输出电流，从而保护电源与负载；当输入极性接反时，器件能阻断反向电流，避免对下游电路造成损伤；若器件因过流导致温升达到阈值，会触发过温保护，降低或切断输出以防止器件损坏。内置 FET 相比传统肖特基二极管具有更低的压降和更小的静态功耗，提高系统效率。
四、典型应用场景
- 移动电源、充电器与便携设备的电源输入保护
- 单电池或多电池管理系统的反接保护和输出限流
- 工业控制与嵌入式主板的电源冗余或整流应用
- 需要低静态电流与低正向压降的电源路径开关场景
五、封装与引脚（概述）
CH213K 采用 SOT23-3 小封装，便于空间受限的电路板布置。常见引脚功能为 VIN、VO、GND（具体引脚排列以官方封装图为准），使用时请参照器件数据手册确认引脚顺序与焊盘尺寸。
六、使用建议与注意事项
- 由于器件在过流情况下通过限流与热关断保护，请避免长期在接近额定极限电流下工作，以免频繁触发热保护影响可靠性。
- 设计 PCB 时为 VIN 与 VO 添加适当旁路电容，降低瞬态响应和导线压降影响；同时注意热流散布局，SOT23-3 封装热阻较大，需考虑散热。
- 在高电流或高温环境下，请留有裕量，遵循器件数据手册的功耗与温度规范。
- 在输入反接使用场景中，仍建议在系统级增加适当保险或熔断保护以应对极端故障。
以上为 CH213K 的产品概述。欲获得详细电气特性曲线、封装尺寸、典型应用电路与绝对最大额定值，请参考 WCH 官方数据手册或联系供应商获取原厂资料。
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