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Infineon TLE42754G
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- Infineon TLE42754G
- Type
- INFINEON
- Unit
- Electronic Component
- Minimum package
- 1000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- 250mV@(300mA)
- Electronic Component
- INFINEON
- Electronic Component
- TLE42754G
- Electronic Component
- 1
- Package
- TO-263-5
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 1.908g
- Electronic Component
- 1
- Features
- positions; Voltage
- Electronic Component
- BM0227743093
- Operating Temperature
- 40℃~+150℃@(Tj)
- Operating Voltage
- 42V
- Output
- Electronic Component
- Output Voltage
- 5V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
TLE42754G 产品概述
一、概述
TLE42754G 是英飞凌（Infineon）的一款高压线性稳压器（LDO），为固定输出型，提供稳定的 +5V 输出，单通道设计。器件支持高达 42V 的输入电压范围，典型输出电流可达 450mA，适合汽车与工业等对耐压和可靠性有较高要求的场合。
二、主要特性
- 固定输出：5V 正极输出，单通道。
- 高压输入能力：最高工作电压 42V，适用于宽输入电压轨。
- 输出电流：最高 450mA，满足中等功率负载需求。
- 低静态电流：静态电流（Iq）仅 150µA，有利于待机节能。
- 低压差：典型压差为 250mV @ 300mA，可在较低压差下保持稳压。
- 电源纹波抑制（PSRR）：约 60dB，对输入噪声抑制能力良好。
- 全面保护：内建过压保护、过流保护、短路保护与过热保护，提升系统可靠性。
- 工作温度：器件在结温范围 -40℃~+150℃ 下工作。
- 封装：TO-263-5（适合有较好散热面积的应用）。
三、热设计与功耗考虑
作为线性稳压器，器件功耗由 Vin 与 Vout 差值与负载电流决定：Pd = (Vin - Vout) × Iout。举例说明：当 Vin 为 12V、Iout 为 450mA 时，耗散约 3.15W；若 Vin 接近最大 42V，则耗散可能达到数十瓦，远超封装散热能力。虽然器件带有过热保护，但长时间大压差高电流工作会导致热关断或损坏。因此在高 Vin 或大电流场合，需做好散热设计（扩大 PCB 铜箔、使用散热片或改用外部功率器件）。
四、器件选型与外围建议
- 输出电容：建议使用低等效串联电阻（Low-ESR）的陶瓷或钽电容作为输出回路以保证稳态稳定性与瞬态响应，常见起始值为 10µF~47µF（具体按器件数据手册确认）。
- 输入电容：在靠近器件输入端放置合适的去耦电容，抑制输入纹波与瞬态。
- 布局：TO-263-5 封装需将散热焊盘与大面积接地铜箔连通，缩短热阻路径；走线尽量粗短，避免在散热通道附近切割铜层。
- 大压差或长期大电流场合，优先考虑串联外部功率MOSFET或改变拓扑（如降压转换器）以降低功耗。
五、典型应用
- 车载电子辅助电源（对高压输入与稳压输出有需求的子系统）。
- 工业传感器与控制模块，需耐高压与高可靠性供电。
- 通用嵌入式系统的局部线性稳压，要求低噪声与良好瞬态响应的场景。
总结：TLE42754G 是一款面向高压场景的稳健型固定 5V LDO，具有低静态电流、良好 PSRR 及多重保护特性。合理的热管理与输出/输入去耦是保证长期可靠工作的关键。欲获得更详细的电气特性曲线与外围元件规范，请参阅英飞凌官方数据手册。
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