Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
UTC UC2845G-S08-R UC2845G
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- UTC UC2845G-S08-R
- Type
- UTC
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- UTC
- Electronic Component
- UC2845G-S08-R
- Electronic Component
- 1
- Package
- SOP-8_150mil
- Electronic Component
- AC-DC Controllers and Regulators
- Electronic Component
- 0.128g
- Electronic Component
- 1
- Features
- (OCP);; (UVP)
- Electronic Component
- BM0228052300
- Electronic Component
- PWM
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 7.6V~30V
- Switching Frequency
- 46kHz~60kHz
- Output Voltage
- 13.5V
- Output Current
- 1A
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
UC2845G-S08-R 产品概述
一、产品简介
UC2845G-S08-R（UTC/友顺）是一款用于外置元件构成的DC-DC电源控制芯片，适用于中低功率开关电源设计。器件采用SOP-8_150mil封装，内部集成基准、振荡、保护与PWM控制等功能，需配合外接功率器件和周边被动元件完成整机电源拓扑。
二、主要特性
- 开关频率范围：46 kHz ~ 60 kHz（可通过外部元件调节）
- 最大占空比：50%（对部分拓扑有设计限制）
- 器件耗散功率 Pd：800 mW
- 保护功能：欠压保护（UVP）、过流保护（OCP）
- 工作温度：-40 ℃ ~ +85 ℃
三、典型应用
适用于隔离或非隔离的开关电源、适配器、工业电源模块、通信及仪器电源等需要外部功率器件配合的DC-DC或PWM控制场合。
四、设计要点与建议
- 频率选择：根据效率与体积权衡在46~60 kHz范围内选定振荡元件；高频可减小磁性件但可能增加开关损耗。
- 占空比限制：50%上限要求在拓扑选型（如正激、反激、半桥等）时考虑变压器或电感的复位与能量平衡。
- 过流保护实现：建议采用外接电流采样电阻配合芯片OCP脚实现快速限制或关断；采样回路应布线短且低阻。
- 欠压保护：保证启动电源与参考基准稳定后再放行，加入软启动电路可降低启动冲击。
五、封装与热管理
SOP-8_150mil封装便于手工焊接与SMT加工。由于Pd达800 mW，长期工作时需考虑PCB散热设计：扩大GND铜箔、靠近热源处留散热过孔，避免器件长期在高温环境下工作以延长寿命。
六、可靠性与布局注意
- 电源旁路电容和地回流应尽量靠近芯片供电引脚，减小噪声与寄生环路。
- 开关节点、功率MOSFET与整流器的布线应分层管理，防止开关干扰影响PWM稳定性。
- 对于关键应用建议做短路、过温与老化测试验证设计。
该器件适合需要外部功率器件与完善保护的中低功率开关电源解决方案，设计时应依据占空比与频率限制优化拓扑与磁性元件，保证可靠性与散热。若需电气特性曲线、引脚定义或参考设计，请提供更具体的资料需求以便补充。
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