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ADI/LINEAR LT1964ES5- #TRPBF LT1964ES5
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ADI(Analog Devices) / LINEAR LT1964ES5-SD#TRPBF
- Type
- ADI/LINEAR
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- 340mV@(200mA)
- Electronic Component
- ADI(Analog Devices) / LINEAR
- Electronic Component
- 30uVrms
- Electronic Component
- LT1964ES5-SD#TRPBF
- Electronic Component
- 1
- Package
- TSOT-23-5
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.02g
- Electronic Component
- 1
- Features
- Terminal Block; Voltage;;; Current
- Electronic Component
- BM0258711550
- Operating Temperature
- 40℃~+125℃@(Tj)
- Operating Voltage
- 20V
- Output
- Electronic Component
- Output Voltage
- 1.22V~20V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LT1964ES5-SD#TRPBF 产品概述
一 概述
LT1964ES5-SD（ADI/Linear）是一款低噪声、低压差、可调输出的线性稳压器（LDO），单路输出，封装为TSOT-23-5。器件适用于对噪声、纹波和静态电流有严格要求的便携与工业系统，输出电压可在1.22V到20V之间调节，最大输出电流为200mA，并集成使能与过热保护功能，具有很好的系统适应性和保护特性。
二 主要性能参数
- 输出类型：可调（1.22V ~ 20V）
- 工作电压（输入允许范围）：最高可达20V
- 最大输出电流：200mA
- 压差（Dropout）：340mV @ 200mA
- 静态电流（Iq）：典型30µA（适合电池供电低静耗场合）
- 噪声：30µVrms（低频至中频带宽内）
- 电源纹波抑制比（PSRR）：54dB @ 120Hz（良好抑制开关电源纹波）
- 保护与控制：过热保护，EN（使能）引脚支持开/关控制
- 输出极性：负极参考（输出以负极/地为参考）
三 封装与引脚（TSOT-23-5）
典型引脚分配为：IN（电源输入）、GND（地）、OUT（稳压输出）、FB（反馈）、EN（使能）。TSOT-23-5小封装利于空间受限的应用，但散热能力有限，需在PCB布局上采取散热措施。
四 典型应用场景
- 电池供电的便携设备与传感器节点
- 后级线性稳压（对开关供电做滤波与低噪声供电）
- 数据采集、ADC、放大器与射频前端的低噪声电源
- 工业控制与嵌入式系统的本地稳压
五 设计要点与注意事项
- 输出设置：内部参考为1.22V，Vout = 1.22V × (1 + R1/R2)，推荐使用中等阻值以兼顾功耗与抗干扰性。
- 稳定电容：为保证稳定与瞬态性能，应在输入、输出端分别放置低ESR电容（具体容量与类型请参照器件数据手册）。
- 使能（EN）：通过EN引脚灵活控制器件上电/关断，关断时低静态电流有利于节省电池能量。
- 纹波与噪声控制：器件本身具低噪声与良好PSRR，但在对噪声极为敏感的场合，建议在输出端增加后级滤波或布局屏蔽。
六 热设计与可靠性提示
线性稳压器的功耗为(Pd) = (Vin - Vout) × Iout。在高Vin与高负载电流下，功耗迅速增加，TSOT-23-5的散热能力有限。举例：若Vin=20V、Vout=1.22V、Iout=200mA，则Pd≈3.16W，远超小封装热限，应避免此类工作点或采取外部散热、大面积铜箔散热。设计时务必计算结温并留有热裕量，结合过热保护以提高系统可靠性。
总结：LT1964ES5-SD为一款性能均衡的可调LDO，低噪声、低静耗、低压差和使能/保护功能使其非常适合便携与噪声敏感的电源方案；在高差压大电流工况下需重视热管理与散热设计。有关具体引脚电气参数与典型应用电路，请参阅厂家完整数据手册。
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