力芯微推出7路集成LDO

Release time:2025-09-18
author:AMEYA360
source:力芯微
reading:193

  概述

  随着旗舰级手机中影像传感器性能的不断升级,对于功耗管理的要求也日益提高。力芯微针对这一市场需求,推出了新一代的基于CMOS技术的低压差、低功耗线性稳压器ET5917。这款专为相机模块设计的7通道集成LDO具备先进的性能特性和应用上的灵活性。ET5917的前两个LDO通道能够支持最高1500mA的负载电流,并且拥有宽泛的输入电压范围(0.6V至2.0V),输出电压可调范围为0.496V至1.8V,步进8mV。而另外五个LDO通道则可以提供最高600mA的负载电流,它们的输入电压范围在1.8V到5.5V之间,输出电压可调范围为1.380V至3.412V,步进同样为8mV。

  ET5917集成了高速I²C接口(最高通讯频率可达1000kHz),用户可根据需要通过I²C接口来实现复杂的配置需求,包括欠压锁定、电源启动顺序、输出电压调节、输出放电管理以及各通道的电流限制等。此外,该芯片具有超低的静态电流消耗,系统工作电压支持低至2.7V的优势,并且内置了全面的保护机制,包括过温、欠压、过流保护及输出快速自动放电等功能,用户可根据需求灵活地配置各项功能。

  相较于ET5907A,ET5917的LDO1和LDO2支持更低的输入电压和更宽的输出电压范围,并且具有更低的电压降(dropout)以及更低的噪声水平,适合需要更高精度电源管理的应用场景。

  特点(Feature)

  ● LDO1和LDO2

  • LDO1/2输入电压范围: 0.6V to 2.0V

  • 输出电压可编程: 0.496V to 1.8V,步进8mV

  • 最大1500mA输出负载能力

  • 超低Dropout: 典型值100mV@1.5A/1.2V

  ● LDO3到LDO7

  • LDO3~7输入电压范围: 1.8V to 5.5V

  • 输出电压可编程: 1.380V to 3.412V,步进8mV

  • 最大600mA输出负载能力

  • 超低噪声:10µVRMS

  • 超低Dropout: 典型值110mV@0.6A/2.8V

  ● 超低输入静态电流: 典型值120µA

  ● 系统端电压可支持低至2.7V

  ● 可编程顺序启动和关机

  ● 内置全通道过温保护功能

  ● 内置全通道欠压保护功能

  ● 内置全通道过流保护功能和输出快速自动放电功能

  ● 内置全通道电源低压复位功能

  ● 可通过I²C改变输出电压和功能

  ● 湿敏等级:MSL1

  ● 全面支持1.2V GPIO

  ● 芯片尺寸: WLCSP-20 1.85mm×1.55mm

  典型应用

力芯微推出7路集成LDO

  管脚定义

力芯微推出7路集成LDO

  功能框图

力芯微推出7路集成LDO


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