MAX5003数据手册集成电路（IC）的PMIC-稳压器-DCDC开关式控制器规格书PDF

描述 Description

The MAX5003 high-voltage switching power-supply controller has all the features and building blocks needed for a cost-effective flyback and forward voltage-mode control converter. This device can be used to design both isolated and nonisolated power supplies with multiple output voltages that operate from a wide range of voltage sources. It includes a high-voltage internal start-up circuit that operates from a wide 11V to 110V input range. The MAX5003 drives an external N-channel power MOSFET and has a current-sense pin that detects overcurrent conditions and turns off the power switch when the current-limit threshold is exceeded. The choice of external power MOSFET and other external components determines output voltage and power.
The MAX5003 offers some distinctive advantages: soft-start, undervoltage lockout, external frequency synchronization, and fast input voltage feed-forward. The device is designed to operate at up to 300kHz switching frequency. This allows use of miniature magnetic components and low-profile capacitors. Undervoltage lockout, soft-start, switching frequency, maximum duty cycle, and overcurrent protection limit are all adjustable using a minimum number of external components. In systems with multiple controllers, the MAX5003 can be externally synchronized to operate from a common system clock.
Warning: The MAX5003 is designed to operate with high voltages. Exercise caution.
The MAX5003 is available in 16-pin SO and QSOP packages. An evaluation kit (MAX5003EVKIT) is also available.

特性 Features

• Wide Input Range: 11V to 110V
• Internal High-Voltage Startup Circuit
• Externally Adjustable Settings
• Output Switch Current Limit
• Oscillator Frequency
• Soft-Start
• Undervoltage Lockout
• Maximum Duty Cycle
• Low External Component Count
• External Frequency Synchronization
• Primary or Secondary Regulation
• Input Feed-Forward for Fast Line-Transient Response
• Precision ±2.5% Reference over Rated Temperature Range
• Thermal Shutdown

应用 Application

• +42V汽车系统
• 高压电源模块
• 工业电源
• ISDN电源
• 电信电源

简介

MAX5003属于集成电路（IC）的PMIC-稳压器-DCDC开关式控制器。由制造生产的MAX5003DC-DC 开关控制器PMIC（电源管理集成电路）DC 到 DC 开关式控制器是用于高效率电路的稳压 IC，其配置为生成高于（突升或步升）或低于（突降或步降）输入电源的输出电源电压。其他拓扑结构可能包括：降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。