A8697中文资料宽输入电压4.0降压稳压器数据手册Allegro规格书

描述 Description

LAST TIME BUY: This product has reached the end of its life cycle and will no longer be offered by Allegro. This product is considered obsolete and customer notification has been provided. All orders are accepted as final builds. Date of status change: December 2, 2013. Deadline for LTB is May 30, 2014.

The A8697 is a constant off-time current mode step-down regulator with a wide input voltage range. Regulation voltage is set by external resistors, to output voltages as low as 0.8 V.

The A8697 includes an integrated power DMOS switch to reduce the total solution footprint. It also features internal compensation, allowing users to design stable regulators with minimal design efforts.

The off-time can be set with an external resistor, allowing flexibility in inductor selection. Additionally, the A8697 has a logic level enable pin which can shut the device down and put it into a low quiescent current mode for power sensitive applications.

Applications include:

Applications with 8 to 25 V input Consumer electronics, networking equipment 12 V lighter-powered applications (portable DVD, etc.) Point of Sale (POS) applications The A8697 is supplied in a low-profile 8-lead SOIC with exposed pad (package LJ).

特性 Features

• 8 to 25 V input range
• Integrated DMOS switch
• Adjustable fixed off-time
• Adjustable output

简介

A8697属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的A8697稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。