MAX253 - 1W原边变压器H桥驱动器，用于隔离电源

MAX253是Maxim美信半导体公司的一款隔离电源产品，MAX253是1W原边变压器H桥驱动器，用于隔离电源，本站介绍了MAX253的封装应用图解、特点和优点、功能等，并给出了与MAX253相关的Maxim元器件型号供参考。

MAX253 - 1W原边变压器H桥驱动器，用于隔离电源 - 隔离电源 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

The MAX253 monolithic oscillator/power-driver is specifically designed to provide isolated power for an isolated RS-485 or RS-232 data interface. The device drives a center-tapped transformer primary from a 5V or 3.3V DC power supply. The secondary can be wound to provide any isolated voltage needed at power levels up to 1W.

The MAX253 consists of a CMOS oscillator driving a pair of N-channel power switches. The oscillator runs at double the output frequency, driving a toggle flip-flop to ensure 50% duty cycle to each of the switches. Internal delays are arranged to ensure break-before-make action between the two switches.

The SD pin puts the entire device into a low-power shutdown state, disabling both the power switches and oscillator.

关键特性

以下关键特性由Maxim美信半导体提供：

Simple Power-Supply Transformer Driver Design for Isolated RS-485/RS-232 Data-Interface Applications

Single 5V or 3.3V Supply

Low-Current Shutdown Mode: 0.4µA

Pin-Selectable Frequency: 350kHz or 200kHz

8-Pin DIP, SO, and µMAX® Packages Take Minimal Board Space

热门应用

桥接地电位差

高噪声抑制通信接口

隔离型和/或高压电源

隔离型RS-485/RS-232电源

医疗装置

过程控制

变压器驱动器

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