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SHIKUES 79L12
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- SHIKUES 79L12
- Type
- SHIKUES
- Minimum package
- 1000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- 1.7V
- Electronic Component
- SHIKUES
- Electronic Component
- 79L12
- Electronic Component
- 1
- Package
- SOT-89P
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.14g
- Electronic Component
- 1
- Electronic Component
- BM0264580610
- Operating Temperature
- 40℃~+85℃@(Ta)
- Operating Voltage
- 35V
- Output
- Electronic Component
- Output Voltage
- 12V
- Output Current
- 150mA
- Output Type
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
79L12 产品概述
一、产品简介
79L12 是 SHIKUES（时科）出品的一款固定输出负电压线性稳压器，采用 SOT-89P 小封装，提供 -12V 输出，最大输出电流 150mA，输入工作电压最高可达 35V（绝对值）。该器件集成了过流保护与热关断功能，适用于对负电源有中等电流要求且空间受限的场合。
二、主要技术参数
- 输出极性：负极（-12V 固定输出）
- 工作电压（输入端绝对值）：≤35V
- 输出电压：-12V（固定）
- 输出电流：最大 150mA（连续）
- 压差（Dropout）：1.7V（典型）
- 静态电流 Iq：6.5mA
- 电源纹波抑制比 PSRR：42dB @ 120Hz
- 工作温度范围：-40℃ ~ +85℃（Ta）
- 保护特性：过流保护、热关断
- 输出通道数：1 路
- 封装：SOT-89P
三、功能与保护特性
器件内置过流限制（OCP）与热关断（OTSD），当负载短路或过载导致电流超限或芯片温度升高时，稳压器自动限制输出或关闭输出以保护自身及外部电路，恢复正常后自动恢复工作，提升可靠性。
四、典型应用场景
- 运放负电源与模拟信号链供电
- 工业控制与传感器系统中小电流负轨供电
- 通信设备、接口电路的负电源
- 电池供电或车载系统中需稳定负压的子系统
五、封装与热管理建议
SOT-89P 为小封装，热阻较大，线性稳压器在压差与电流同时较大时会产生显著功耗。建议在设计时注意热耗散：
- 功耗估算 P ≈ |Vin - Vout| × Iout（例如 Vin = -24V，Vout = -12V，Iout = 150mA 时 P ≈ 1.8W）
- 在高压差或接近最大电流工作时，应采取 PCB 散热如加大铜箔、增加散热通孔或选择外部散热片，并对输出电流进行降额设计。
- 布局上将输入、输出与地的走线及散热铜箔尽量靠近封装底部以利散热。
六、外围元件与使用注意
- 为保证稳压器稳定与抑制纹波，建议输入端并联 0.1µF 陶瓷与 1–10µF 的电解/钽电容做旁路；输出端推荐使用 10µF 以上、具有合适 ESR 的电容（具体值依芯片稳定性要求调整）。
- 注意输入电压绝对值必须比输出电压绝对值大至少压差 1.7V 以上以保证稳压；同时输入不得超过器件最大额定值 35V（绝对值）。
- 在高温或高功耗工况下，应考虑对输出电流做适当限制以避免触发热关断频繁重启。
本产品适合对负电源有中等电流需求且要求简单、低噪声的应用场合。选型与电路设计中请结合具体工作电压、功耗及散热条件合理评估并采取必要的保护与旁路措施。
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