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CONSONANCE CN3303
Configuration
1 options
Configuration
Electronic Component
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- CONSONANCE CN3303
- Type
- CONSONANCE
- Minimum package
- 4000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CONSONANCE
- Electronic Component
- CN3303
- Electronic Component
- 1
- Package
- SOP-8
- Electronic Component
- Battery Management
- Electronic Component
- 0.089g
- Electronic Component
- 1
- Features
- Programmable Current
- Electronic Component
- BM0264376438
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 2.7V~6.5V
- Battery Type
- Battery
- Battery
- 3
- ICType
- IC
- 0VBattery
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
CN3303 产品概述
一、产品简介
CN3303 是 CONSONANCE（上海如韵）推出的一款面向三节锂电池组的充电控制芯片，采用 SOP-8 封装，配合外置 DC-DC 电源模块工作。芯片本身工作电压范围为 2.7V 至 6.5V，适合由单节锂电池、USB 或其他低压电源经过升压/降压模块供电的场合。设计上注重低功耗，静态电流仅 2μA，适合长期待机并对电池续航敏感的便携设备和备电系统。
二、主要特性
- 适配电池：三节锂离子/聚合物电池组（3S），充电饱和电压 12.6V。
- 输入/工作电压：2.7V ~ 6.5V（需外置 DC-DC 将输入升/降至合适充电电压）。
- 低静态电流：Iq ≈ 2μA，有利于降低系统待机耗电。
- 温度范围：工作温度 -40℃ ~ +85℃，满足工业级与民用宽温应用需求。
- 0V 电池保护：芯片不支持对完全耗尽至 0V 的电池直接充电，需外部预充或唤醒电路。
- 封装形式：SOP-8，便于手工焊接及批量贴片生产。
三、典型应用场景
- 便携式设备与手持终端的多节电池管理与充电控制。
- 不间断电源（UPS）与后备电源模块中的充电控制部分（配合外置 DC-DC）。
- 工业数据采集、远程测控与物联网网关等对低待机功耗有要求的供电子系统。
- 需把低压电源（如单节电池或 USB）通过外部升压供电来对 3 节电池组充电的方案。
四、设计要点与注意事项
- 外置 DC-DC：由于芯片本身为充电控制器且工作电压上限 6.5V，要对 3 节电池进行充电（终止电压 12.6V）必须配合稳定、效率高的升压模块或外部电源。选型时应考虑转换效率、纹波与快速响应能力。
- 0V 电池处理：CN3303 不支持给电压为 0V 的电池直接充电。对长期放电或保护电路切断的电池，应在外部实现预充电或唤醒机制，或采用带有“0V 唤醒”功能的前级电路。
- 充电电流与限制：充电电流通常由外部电流检测电阻与 DC-DC 模块或功率器件限制，设计时应按电池厂商建议的 C-rate 和热管理要求设置。
- 热管理与布局：SOP-8 封装虽然利于布板，但高充电功率下需关注热量分散，确保功率器件与电感等有足够散热空间。
- 保护与检测：推荐同时配合电池保护 IC（过充、过放、过流、短路保护）与温度检测元件，提升系统可靠性与安全性。
五、封装与规格提示
- 封装：SOP-8，兼顾成本与可制造性。
- 品牌：CONSONANCE（上海如韵），便于在中国市场获得技术与供应支持。
- 环境适应：-40℃ ~ +85℃ 工作温度，适用于室内与部分户外工业环境（需按实际环境与外壳防护等级进一步验证）。
六、应用建议
在实际产品开发中，建议将 CN3303 与高效升压模块、精确电流采样电阻、电池保护 IC 及温度传感器配套使用，形成完整、安全的三节锂电池充电子系统。对需支持电池深度放电场景，应在方案前端增加预充/唤醒电路，防止无法启动充电的问题。通过合理的 PCB 布局与热设计，可在保证充电效率的同时确保长期可靠性。
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