SEA05数据手册集成电路（IC）的电源管理-专用规格书PDF

描述 Description

The SEA05 is a highly integrated solution for SMPS applications requiring a dual control loop to perform CV (constant voltage) and CC (constant current) regulation.

The device integrates a voltage reference, two opamps (with OR-ed open-drain outputs), and a lowside current sensing circuit.

The voltage reference, along with one op-amp, is the core of the voltage control loop; the current sensing circuit and the other op-amp make up the current control loop.

The external components needed to complete the two control loops are: a resistor divider that senses the output of the power supply and fixes the voltage regulation setpoint at the specified value; a sense resistor that feeds the current sensing circuit with a voltage proportional to the dc output current; this resistor determines the current regulation setpoint and must be adequately rated in terms of power dissipation; the frequency compensation components (R-C networks) for both loops.

The device, housed in one of the smallest available package, is ideal for space-shrunk applications such as adapters and chargers.

特性 Features

• Open-drain output stage
• Current sense threshold: 50 mV
• SOT23-6L micro package
• Constant voltage and constant current control
• Low quiescent consumption: 200 µA
• Wide operating VCC range [3.5 - 36] V
• Voltage control loop accuracy +/- 0.5%
• Low external component count
• Voltage reference: 2.5 V

简介

SEA05属于集成电路（IC）的电源管理-专用。由制造生产的SEA05电源管理 - 专用专用型电源管理集成电路 (PMIC) 用于电源的控制或操作，适合特定或小范围的目标应用，例如汽车气囊管理、电容器组平衡、AC 公共电力监控、存储器总线端接、接地故障检测、能量收集、小型引擎管理、处理器或芯片集专用电压调节、负载突降保护、触觉驱动器、热电制冷器控制等。