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Siproin SSP7901P40PR
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Siproin SSP7901P40PR
- Type
- SIPROIN
- Minimum package
- 1000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- SIPROIN
- Electronic Component
- SSP7901P40PR
- Electronic Component
- 1
- Package
- SOT-89-3L
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.18g
- Electronic Component
- 1
- Electronic Component
- BM0227783259
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 36V
- Output
- Electronic Component
- Output Voltage
- 4V
- Output Current
- 300mA
- Output Type
- Electronic Component
- Output Channel Count
- 1
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SSP7901P40PR 产品概述
一、产品简介
SSP7901P40PR 是上海矽朋（Siproin）推出的一款高压、低功耗固定输出线性稳压器（LDO），为要求高抑制电源纹波且待机功耗极低的系统提供稳定 4.0V 输出。器件采用 SOT-89-3L 小封装，单通道正极输出设计，集成多重保护，适合工业、物联网及电池供电场景的局部线性稳压。
二、主要规格
- 输出类型：固定（4.0V）
- 最大工作/额定输入电压：36V（系列型号标识为 40V，额定工作电压按规格书为 36V）
- 输出电流：300mA（连续）
- 电源纹波抑制比（PSRR）：70dB @ 10Hz（低频优秀）
- 静态电流（Iq）：典型 1.6μA（适合低功耗待机）
- 工作温度范围：-40℃ ~ +85℃
- 输出极性：正极、单通道
- 封装：SOT-89-3L
三、保护与可靠性
内置热关断、短路保护及过流保护，能在异常工况下自动限制输出或关断以保护器件与负载。建议在设计中结合合理的 PCB 散热和外部限流或保险元件，以获得更高的可靠性和更长的寿命。
四、热设计与功耗注意
作为线性稳压器，功耗主要由 (Vin - Vout) × Iout 决定。举例：若输入接近 36V、输出 4V、负载 300mA，器件耗散功率可达约 9.6W，单芯片及 SOT-89 封装无法直接承受此功耗。设计时应：
- 降低输入-输出电压差，或在前级使用开关降压器做预降压；
- 采用大面积铜箔和热过孔增强 PCB 散热；
- 对长期高压差场景考虑并联或外部散热器方案。
五、应用建议
适用于对纹波敏感的模拟前端、传感器供电、数据采集电路、低功耗终端备电管理及需要快速响应的小功率稳压场合。由于低 Iq 特性，尤其适合待机时间长且静态功耗受限的电池供电设备。
六、布局与外围元件建议
为保证稳定性与最佳性能，建议在输入端和输出端使用稳健的去耦电容（常用陶瓷电容 1μF~10μF 或根据器件手册推荐值），靠近引脚布置；输入侧加足够隔离/滤波以减少高压源干扰；输出侧电容需满足 ESR 要求以保证环路稳定。具体容值与 ESR 请参照产品详尽规格书。
SSP7901P40PR 在高压工况下提供了兼具低噪声与低静耗的解决方案，但在高电压差与大电流情形下需格外重视热管理与器件额定限制。若需样片、典型电路图或更多参数，请参阅上海矽朋正式技术手册。
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