MAX1714A|MAX1714B - 高速、降压型控制器，用于笔记本电脑

MAX1714A|MAX1714B是Maxim美信半导体公司的一款DC-DC开关调节器产品，MAX1714A|MAX1714B是高速、降压型控制器，用于笔记本电脑，本站介绍了MAX1714A|MAX1714B的封装应用图解、特点和优点、功能等，并给出了与MAX1714A|MAX1714B相关的Maxim元器件型号供参考。

MAX1714A|MAX1714B - 高速、降压型控制器，用于笔记本电脑 - DC-DC开关调节器 - 低成本、具有快速响应特性、精度为1%的电源控制器，用于下一代笔记本CPU核以及I/O供电 - 美信半导体

产品概述

The MAX1714 pulse-width modulation (PWM) controller provides the high efficiency, excellent transient response, and high DC output accuracy needed for stepping down high-voltage batteries to generate low-voltage CPU core or chip-set/RAM supplies in notebook computers.

Maxim's proprietary Quick-PWM™ quick-response, constant-on-time PWM control scheme handles wide input/output voltage ratios with ease and provides 100ns "instant-on" response to load transients while maintaining a relatively constant switching frequency.

The MAX1714 achieves high efficiency at a reduced cost by eliminating the current-sense resistor found in traditional current-mode PWMs. Efficiency is further enhanced by an ability to drive very large synchronous-rectifier MOSFETs.

Single-stage buck conversion allows these devices to directly step down high-voltage batteries for the highest possible efficiency. Alternatively, two-stage conversion (stepping down the +5V system supply instead of the battery) at a higher switching frequency allows the minimum possible physical size.

The MAX1714 is intended for CPU core, chipset, DRAM, or other low-voltage supplies as low as 1V. The MAX1714A is available in a 20-pin QSOP package and includes overvoltage protection. The MAX1714B is available in a 16-pin QSOP package with no overvoltage protection. For applications requiring VID compliance or DAC control of output voltage, refer to the MAX1710/MAX1711 data sheet. For a dual output version, refer to the MAX1715 data sheet.

关键特性

以下关键特性由Maxim美信半导体提供：

Ultra-High Efficiency

No Current-Sense Resistor (Lossless ILIMIT)

Quick-PWM with 100ns Load-Step Response

1% VOUT Accuracy Over Line and Load

2.5V/3.3V Fixed or 1V to 5.5V Adjustable Output Range

2V to 28V Battery Input Range

200/300/450/600kHz Switching Frequency

Overvoltage Protection (MAX1714A)

Undervoltage Protection

1.7ms Digital Soft-Start

Drives Large Synchronous-Rectifier FETs

2V ±1% Reference Output

Power-Good Indicator

热门应用

1.8V与2.5V I/O电源

芯片组/RAM供电，电压可低至1V

CPU核电源

笔记本电脑

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