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MAX8878：低噪声、低压差、150mA线性稳压器，引脚兼容于'2982

SOT23稳压器，节省空间

The MAX8877/MAX8878 low-noise, low-dropout linear regulators operate from a 2.5V to 6.5V input and deliver up to 150mA. These devices are pin-compatible with the industry-standard '2982 and offer an improved dropout voltage. Typical output noise is 30µVRMS, and typical dropout is only 165mV at 150mA. The output voltage is preset to voltages in the range of 1.5V to 5.0V, in 100mV increments. Designed with an internal P-channel MOSFET pass transistor, the MAX8877/MAX8878 maintain a low 100µA supply current, independent of the load current and dropout voltage. Other features include a 10nA logic-controlled shutdown mode, short-circuit and thermal-shutdown protection, and reverse battery protection. The MAX8878 also includes an auto-discharge function, which actively discharges the output voltage to ground when the device is placed in shutdown. Both devices come in regular and thin 5-pin SOT23 package.

关键特性 Pin-Compatible with the Industry-Standard '2982 Low Output Noise: 30µVRMS Low 55mV Dropout at 50mA Output (165mV at 150mA output) Low 85µA No-Load Supply Current Low 100µA Operating Supply Current (even in dropout) Thermal-Overload and Short-Circuit Protection Reverse Battery Protection Output Current Limit Preset Output Voltages (±1.4% Accuracy) 10nA Logic-Controlled Shutdown

MAX8877、MAX8878：典型工作电路 应用 音频系统 无绳电话 电子规划器 手持式仪表(PDA、掌上电脑) 调制解调器 掌上电脑 PCMCIA卡 PCS电话

数据手册DataSheet

关键参数

技术资料

• Phase Noise and TD-SCDMA UE Receiver
• Selecting LDO Linear Regulators for Cellphone Designs
• Managing Noise in Cell-Phone Handsets

质量和环境数据

• MAX8878.pdf

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