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Mingda Micro MD7330
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- MD7330
- Type
- Mingda Micro
- Minimum package
- 1000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- 250mV@(100mA)
- Electronic Component
- Electronic Component
- Electronic Component
- MD7330
- Electronic Component
- 1
- Package
- SOT-89-3
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.101g
- Electronic Component
- 1
- Features
- Electronic Component
- Electronic Component
- BM0247832815
- Operating Temperature
- 40℃~+85℃@(Ta)
- Operating Voltage
- 15V
- Output
- Electronic Component
- Output Voltage
- 3V
- Output Current
- 300mA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MD7330 产品概述
一、产品简介
MD7330 是明达微推出的一款低静态电流线性稳压器，固定输出 3.0V，单路输出，输出极性为正极。器件采用 SOT-89-3（SOT89-3L）小封装，面向便携式与低功耗系统，兼顾低待机消耗与中等负载能力的应用需求。
二、主要电气特性
- 输出电压：3.0V（固定）
- 工作电压（最大输入）：15V
- 输出电流：最大 300mA
- 压降（Dropout）：250mV @ 100mA（在更高电流下压降会增加）
- 静态电流 Iq：1.2μA（典型，适合电池供电）
- 保护功能：短路保护
- 工作温度范围：-40°C ～ +85°C（Ta）
- 输出通道数：1（单路）
- 封装：SOT-89-3（SOT89-3L）
MD7330 在轻载至中等负载下具有较低静耗，适合需要长期待机的电池设备。短路保护提高了系统安全性和可靠性。
三、热设计与注意事项
SOT-89 小型封装的散热能力有限。在评估功耗时需计算最大功耗 Pd = (Vin - Vout) × Iout。例如在 Vin = 15V、Iout = 300mA 时，Pd ≈ 3.6W，这通常超过 SOT-89 的安全散热范围，容易导致过热触发热关断或损坏。建议：
- 尽量降低输入到稳压器的电压差；若需高 Vin 而大电流输出，应改用更大封装或开关降压方案。
- 在 PCB 上为 SOT-89 提供足够铜面积散热（底层或散热焊盘）；增加散热铜箔并连接到地平面。
- 在高功耗工况下进行温升测试，保证结温和环境温度不超过规格。
四、典型应用场景
- 低功耗便携设备、传感器节点、物联网终端
- 电池供电的控制电路与模拟前端
- 需要 3.0V 定点供电的 MCU、射频模块、外围芯片
- 对静态电流敏感且输出电流不超过几百毫安的场合
五、外部元件与布局建议
- 建议在输入端并联 0.1μF1μF 陶瓷去耦电容以抑制瞬态噪声，在输出端并联 1μF10μF 低 ESR 陶瓷或钽电容以保证稳压器稳定性（具体容值与 ESR 请参考器件数据手册）。
- 输入/输出电容应尽量靠近引脚焊盘放置，走短且宽的走线。
- 若系统要求低纹波及更快瞬态响应，可在输出端配合小阻抗电容或 RC 滤波网络，但要确保所用电容不会使稳压器不稳定。
- 为保护系统，在输入端考虑串联熔断器或热敏保护；在输出端可并联电流检测或软启动电路以避免启动冲击。
六、可靠性与选型建议
选型时确认器件在目标工作点的压降及散热条件可接受。若输入电压较高且负载接近 300mA，应优先评估热性能或选择功耗更低的开关降压器/更大封装线性器件。MD7330 适合静态功耗受限、输出需稳定 3.0V 且平均功耗可控的应用场合。
如需进一步电气特性曲线、封装引脚图及典型应用电路，请参考明达微 MD7330 的产品数据手册。
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