WMSIC Electronic Components

HTC LM1117S-1.2

ModelLM1117S-1.2
PackageSOT-223
BrandHTC
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
HTC LM1117S-1.2
Type
HTC
Unit
Electronic Component
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
1.2V@(1A)
Electronic Component
HTC
Electronic Component
100uV
Electronic Component
LM1117S-1.2
Electronic Component
1
Package
SOT-223
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.334g
Electronic Component
1
Electronic Component
BM0000003641
Operating Temperature
40℃~+125℃@(Tj)
Operating Voltage
12V
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.

LM1117S-1.2 产品概述

LM1117S-1.2 是一款高性能的线性稳压器(LDO),专为满足通信、消费电子及工业应用中的电源管理需求而设计。其具有固定输出电压为1.2V,输出电流能力高达1A,能够为各种电子设备提供稳定可靠的电源。

1. 基本特点

  • 输出电压: LM1117S-1.2 的固定输出电压为1.2V,特别适用于需要低电压供电的应用,比如微处理器和数字信号处理器(DSP)。
  • 输出电流能力: 最大输出电流可达到1A,满足大部分中小功率电路的需求。
  • 封装类型: 采用SOT-223封装,小巧的外形适合于空间有限的电路板设计,同时由于其良好的散热性能,可有效提高工作稳定性。
  • 低压差: LM1117 系列具有低压降特性,使其即使在输入电压与输出电压相近的情况下,依然能保持良好的线性稳压效果。
  • 温度范围: 该稳压器支持广泛的工作温度范围,通常为-40°C至+125°C,适合在各种严苛环境下工作。

2. 工作原理

LM1117S-1.2 采用负反馈原理,通过比较输入和输出电压,当发现输出电压下跌时,内部电路会自动调整,增强输出电流,达到稳压效果。这一机制保证了在负载变化或输入电源波动时,输出电压能够保持稳定。

3. 应用领域

LM1117S-1.2 广泛应用于多种电子电路,包括但不限于:

  • 消费电子: 用于智能手机、平板电脑、笔记本电脑等设备的电源管理。
  • 通信设备: 常见于路由器、交换机等网络设备,确保这些设备在工作中有稳定的电压供应。
  • 工业控制: 在PLC、变频器等介绍中,需要精确的电压输出以确保设备操作的可靠性。
  • 嵌入式系统: 特别适用于微控制器和其他低功耗设备的供电。

4. 性能优势

  • 高效率: LM1117S-1.2 在相较于其他稳压器中显示出优越的效率与低热量损耗,适合长时间工作。
  • 易于使用: 该元器件在设计中几乎不需要外部元件,减少了设计复杂性并节省了空间,简化了电路设计。
  • 良好纹波抑制: 在对噪声敏感的应用中,LM1117S-1.2 的低输出纹波特性能够显著提高系统的稳定性和可靠性。

5. 设计注意事项

使用 LM1117S-1.2 时须注意几个关键设计参数:

  • 输入电压: 输入电压应高于输出电压至少1V,保证稳压器能够正常工作,避免损坏。
  • 散热设计: 虽然 SOT-223 提供了较好的散热性能,但在实际设计中仍需根据应用的负载条件合理规划散热措施,确保稳压器在安全的温度范围内工作。
  • 输入和输出电容的选择: 为了获得最佳稳定性与响应时间,建议在输入和输出端加装适当的电容。在输入端,通常推荐使用10μF 的电容,以确保良好的输入滤波;而在输出端,建议使用22μF 的钽电容以应对负载瞬态变化。

结论

总的来说,LM1117S-1.2 是一款表现优异且应用广泛的线性稳压器,具备输出电压稳定、安装空间小、使用简便等特点,非常适合现代电子产品对电源管理的高要求。无论是在消费电子还是工业控制领域,LM1117S-1.2 都能够提供可靠的解决方案,成为设计师和工程师们值得信赖的选择。

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