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ST LD1117S33CTR 3.3V LDO Regulator LD1117S33CTR
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- ST(STMicroelectronics) LD1117S33CTR
- Type
- ST
- Unit
- Electronic Component
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- 1.2V@(800mA)
- Electronic Component
- ST(STMicroelectronics)
- Electronic Component
- 100uV
- Electronic Component
- LD1117S33CTR
- Electronic Component
- 1
- Package
- SOT-223-4
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.22g
- Electronic Component
- 1
- Electronic Component
- BM0000281068
- Operating Temperature
- 40℃~+125℃@(Tj)
- Operating Voltage
- 15V
- Output
- Electronic Component
- Output Voltage
- 3.3V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
产品概述：LD1117S33CTR 线性稳压器
一、产品简介
LD1117S33CTR 是意法半导体（STMicroelectronics）推出的一款高性能线性稳压器（LDO），以其固定输出电压3.3V而广泛应用于各种电子产品中。该稳压器支持最大输入电压15V，提供高达800mA的输出电流，并在-40℃到125℃的工作温度范围内稳定工作。LD1117S33CTR适合于需要高PSRR（电源抑制比）和低纹波的敏感电源应用。
二、主要特性
输出电压：LD1117S33CTR提供固定的输出电压3.3V，极大简化了电源设计过程。
输入电压范围：最大输入电压可达15V，适应广泛的电源环境。
输出电流：能够提供高达800mA的输出电流，适合驱动多种负载。
压降（Dropout Voltage）：在800mA的输出下，最大压降为1.3V，意味着在输入电压低于4.6V（3.3V + 1.3V）时依然能保持稳定输出。
PSRR/纹波抑制：在120Hz频率下，PSRR高达75dB，确保输出电压在负载变化和输入电压波动时依然稳定，有效减少电源噪声的影响。
保护功能：内置过流和超温保护功能，确保在异常工作条件下设备的安全性和可靠性。
低静态电流：静态电流为10mA，提升了电源效率，适合需要长时间运行的便携设备。
适用环境：具备宽广的工作温度范围（-40℃到125℃），使其适合于汽车、工业及消费类电子等多种应用场景。
三、封装与安装
LD1117S33CTR采用SOT-223封装，便于表面贴装，节省板空间，适应高密度布局要求。该封装还具备优良的热管理性能，进一步提升了 LDO的可靠性和效率。
四、应用领域
LD1117S33CTR 线性稳压器具有广泛的应用领域，包括但不限于：
- 消费电子设备：如便携式音乐播放器、平板电脑、智能手机等。
- 工业控制：用于传感器、测量仪器等需要稳定电源的设备。
- 汽车电子：为车载电子设备提供稳定电源输出。
- 通信设备：例如，无线通信模块和网络设备等。
五、设计注意事项
在设计应用中，需考虑以下几点以确保最佳性能：
输入与输出电容：根据数据手册选择合适的输入和输出电容，以提高稳定性并减少电压纹波。
PCB布局影响：合理设计PCB布局，缩短输入、输出电源和地的连线，减少高频噪声干扰。
散热考虑：依据功耗需求设计散热措施，确保器件在高速、高温情况下依然稳定工作。
六、总结
LD1117S33CTR是一款性能卓越的线性稳压器，凭借其可靠的输出特性和高效能，适用于各种高要求的电源管理应用。随着电子设备向着更小型化与高效化的方向发展，LD1117S33CTR无疑将成为开发者和工程师的理想选择，帮助他们在设计中实现更高的安全性和可靠性。
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