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SGMICRO SGM2205-3.3XKC3G/TR SGM2205
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- SGMICRO SGM2205-3.3XKC3G / TR
- Type
- SGMICRO
- Minimum package
- 2500
Technical parameters
- Electronic Component
- 850mV@(800mA)
- Electronic Component
- SGMICRO
- Electronic Component
- SGM2205-3.3XKC3G/TR
- Electronic Component
- 1
- Package
- SOT-223-3
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.431g
- Electronic Component
- 1
- Features
- Output
- Electronic Component
- BM0227327470
- Operating Temperature
- 40℃~+125℃@(Tj)
- Operating Voltage
- 20V
- Output
- Electronic Component
- Output Voltage
- 3.3V
- Output Current
- 800mA
- Output Type
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SGM2205-3.3XKC3G/TR 产品概述
一、产品简介
SGM2205-3.3XKC3G/TR 是圣邦微（SGMICRO）推出的一款固定输出线性低压差稳压器（LDO），输出电压为 3.3V，输出通道数 1，输出极性为正。器件工作电压可达 20V，适用于对噪声有较高要求且需稳定 3.3V 电源的系统设计。
二、主要性能参数
- 输出电压：3.3V（固定）
- 最大输出电流：800mA
- 工作电压：最高 20V
- 压降（Dropout）：850mV @ 800mA
- 静态电流（Iq）：112μA（典型）
- 电源纹波抑制比（PSRR）：75dB @ 1kHz
- 工作结温：-40℃ ~ +125℃ (Tj)
- 保护特性：过流保护、短路保护、过热保护
- 封装：SOT-223-3
三、性能亮点
- 高 PSRR（75dB@1kHz），对开关电源噪声和射频干扰抑制效果优秀，适合敏感模拟或射频前端供电。
- 较低静态电流 112μA，有利于待机功耗控制（在非连续高电流场景更为明显）。
- 850mV 压差在 800mA 负载下表现良好，适配中等差分电压输入场景。
四、典型应用
- 工业控制与自动化设备
- 通信设备与射频前端供电
- 嵌入式系统与微控制器电源
- 消费电子中对噪声敏感的模拟电路供电
五、封装与热设计建议
SOT-223-3 封装热阻较大，设计时应重点考虑功耗与散热。线性稳压器的功耗 P = (Vin - Vout) × Iout。举例：Vin=5V、Iout=800mA 时 P≈1.36W；若 Vin=12V，则 P≈6.96W；Vin=20V 时 P≈13.36W，器件会迅速达到热关断阈值。建议在 PCB 布局中采用大面积铜箔散热、连接到地平面的散热焊盘，并在必要时使用外部散热片或改用降压转换器以降低功耗。
六、使用注意事项
- 请参考官方数据手册选择合适的输入/输出旁路电容与等效串联电阻（ESR），以保证稳定性与瞬态性能。
- 输入电容应靠近器件 VIN 引脚，输出电容靠近 VOUT 引脚并使用低 ESL/ESR 器件以改善瞬态响应。
- 在高温或大电流工况下，应对热关断和过流保护行为进行验证，并考虑电源降额与热管理方案。
- 设计时若需更高效率或更大功率耗散，应考虑开关降压器或外部功率分担方案。
如需原厂典型电路、引脚排列或更详细的外围元件建议，请提供是否需要数据手册或具体应用场景，我可进一步给出参考电路与布局建议。
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