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ADI/LINEAR LT3021ES8-1.2#TRPBF LT3021ES8
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ADI(Analog Devices) / LINEAR LT3021ES8-1.2#TRPBF
- Type
- ADI/LINEAR
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- 160mV@(500mA)
- Electronic Component
- ADI(Analog Devices) / LINEAR
- Electronic Component
- 300uVrms
- Electronic Component
- LT3021ES8-1.2#TRPBF
- Electronic Component
- 1
- Package
- SO-8
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.114g
- Electronic Component
- 1
- Features
- Voltage;; Current
- Electronic Component
- BM0264756718
- Operating Temperature
- 40℃~+125℃@(Tj)
- Operating Voltage
- 10V
- Output
- Electronic Component
- Output Voltage
- 1.2V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LT3021ES8-1.2#TRPBF 产品概述
一、产品简介
LT3021ES8-1.2#TRPBF 是 ADI/Linear 提供的一款单通道线性低压差（LDO）稳压器，固定输出 1.2V，最大输出电流 500mA。器件针对对噪声和电源干扰敏感的电路设计，集成多种保护与控制功能，适用于点对点电源、模拟前端与低噪声数字电源等应用。
二、主要参数与性能亮点
- 输入工作电压：10V（器件在该电压下正常工作）
- 输出电压：1.2V（固定型）
- 最大输出电流：500mA
- 压差（Dropout）：约 160mV @ 500mA，适合低压差应用
- PSRR：60dB @ 120Hz，可有效抑制工频及整流纹波
- 输出噪声：约 300 μVrms，适用于对噪声敏感的模拟电路
三、保护与控制功能
器件内置多项实用保护与控制功能：使能控制（EN）便于电源管理与电源排序；反极性电压保护与反向电流保护提高系统可靠性与热插拔容错能力；过流保护与热关断保证在过载或环境温升情况下器件自我保护，提升系统安全性。
四、封装与热性能
封装形式为 SO-8（LT 系列 ES8 标识），适合标准贴片工艺。需要注意的是，当输入电压与输出电压差较大时（例如 Vin=10V, Vout=1.2V），在最大负载 500mA 下功耗 P = (Vin − Vout) × Iout ≈ 4.4W，散热设计（铜箔面积、散热过孔或散热片）对避免热关断和保证可靠工作至关重要。器件允许结温范围 -40°C 至 +125°C（Tj）。
五、典型应用场景
- 精密模拟前端、传感器供电与ADC/DAC基准旁路
- 通信设备与基带处理器的低噪声点对点电源
- 工业控制与仪器仪表中的本地稳压
- 需热插拔或防反接保护的便携与电池系统
六、设计注意事项
- 输出电容选择与摆放：为保证稳定与最低噪声，应参考厂商数据手册选择适当容值及 ESR 的输出电容，并靠近输出引脚布局。
- 散热评估：计算最大功耗并规划 PCB 散热（大铜箔/多层过孔）以避免热关断。
- 使能与电源排序：利用 EN 引脚实现电源使能与序列控制，避免上电冲击。
- 验证 PSRR 与噪声：对于对纹波抑制有严格要求的系统，需在实际工作频段测量确认性能。
七、选型建议与总结
LT3021ES8-1.2#TRPBF 以其 1.2V/500mA 的固定输出、低压差与高 PSRR、低噪声及丰富保护功能，适合对输出洁净度和可靠性要求高的应用。但在高 Vin − Vout 的工作点应重点关注热管理。选型时请结合实际输入电压、负载和散热条件，并参阅厂商完整规格书与典型应用电路。
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