MAX797H - 高压、同步整流、降压型控制器，用于CPU电源

MAX797H是Maxim美信半导体公司的一款DC-DC开关调节器产品，MAX797H是高压、同步整流、降压型控制器，用于CPU电源，本站介绍了MAX797H的封装应用图解、特点和优点、功能等，并给出了与MAX797H相关的Maxim元器件型号供参考。

MAX797H - 高压、同步整流、降压型控制器，用于CPU电源 - DC-DC开关调节器 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

The MAX797H high-performance, step-down DC-DC converter provides main CPU power in battery-powered systems. A 40V rating on the power stage's input allows operation with high-cell-count batteries and a wide range of AC adapters. This buck controller achieves 96% efficiency by using synchronous rectification and Maxim's proprietary Idle Mode™ control scheme to extend battery life at full-load (up to 10A) and no-load outputs. Excellent dynamic response corrects output transients caused by the latest dynamic-clock CPUs within five 300kHz clock cycles. Unique bootstrap circuitry drives inexpensive N-channel MOSFETs, reducing system cost and eliminating the crowbar switching currents found in some PMOS/NMOS switch designs.

The MAX797H has a logic-controlled and synchronizable fixed-frequency, pulse-width-modulating (PWM) operating mode, which reduces noise and RF interference in sensitive mobile-communications and pen-entry applications. The SKIP override input allows automatic switchover to idle-mode operation (for high-efficiency pulse skipping) at light loads, or forces fixed-frequency mode for lowest noise at all loads. The MAX797H is pin compatible with the popular MAX797, but has a higher input voltage range.

The MAX797H comes in a 16-pin narrow SO package.

关键特性

以下关键特性由Maxim美信半导体提供：

96% Efficiency

Up to 40V Power Input

2.5V to 6V Adjustable Output

Preset 3.3V and 5V Outputs (at up to 10A)

5V Linear-Regulator Output

Precision 2.505V Reference Output

Automatic Bootstrap Circuit

150kHz/300kHz Fixed-Frequency PWM Operation

Programmable Soft-Start

375µA Quiescent Current (VIN = 12V, VOUT = 5V)

1µA Shutdown Current

热门应用

工业控制

笔记本电脑和亚笔记本电脑

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