MAX845 - 隔离型、变压器驱动器，适用于PCMCIA设计

MAX845是Maxim美信半导体公司的一款隔离电源产品，MAX845是隔离型、变压器驱动器，适用于PCMCIA设计，本站介绍了MAX845的封装应用图解、特点和优点、功能等，并给出了与MAX845相关的Maxim元器件型号供参考。

MAX845 - 隔离型、变压器驱动器，适用于PCMCIA设计 - 隔离电源 - 内置功率MOSFET，节省空间，可提供750mW功率 - 美信半导体

产品概述

The MAX845 provides an isolated power supply small enough to fit in thin PCMCIA cards and space-sensitive applications. It drives a low-profile center-tapped transformer primary from a 5V or 3.3V DC power supply. The secondary can be wound to provide any isolated positive or negative voltage at powers up to 750mW.

The MAX845 consists of an oscillator followed by a toggle flip-flop. The flip-flop generates two 50% duty-cycle square waves, which are complementary at half the oscillator frequency (450kHz, min). These two signals drive the ground-referenced N-channel power switches. Internal circuitry ensures break-before-make action between the two switches.

A low-power shutdown disables both the switches and the oscillator, reducing power consumption. An evaluation kit (MAX845EVKIT-MM) is available to evaluate low-profile 5V 40mA and 5V 100mA applications.

关键特性

以下关键特性由Maxim美信半导体提供：

Transformer Driver for Ultra-Thin 5V-µs Transformers

Isolated DC-to-DC Power Supply for PCMCIA Applications

450kHz Minimum Switching Frequency

Ultra-Low Input Supply Current Ripple

Single +5V or +3.3V Supply

5µW Low-Power Shutdown Mode

8-Pin SO and µMAX Packages

Low Output Ripple Permits Miniature Output Capacitors

热门应用

桥接地电位差

隔离型数据采集

隔离型接口供电

低功耗LAN网络

医疗装置

噪声抑制通信接口

PCMCIA调制解调器卡

过程控制

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