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MAX20094

MAX20094

备份电池充电器和升压控制器

备份电池充电器和升压控制器

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概述

说明

MAX20094/MAX20095 IC集成了可配置恒流/恒压(CC/CV)电池充电器和高效同步升压控制器，在主电源断电时为关键系统供电。此外，提供诊断功能，用于检查电池的健康状态(SOH)和IC功能。可配置充电门限和输出电压，以支持主流化学成分电池和多节电池数量。为支持系统集成，IC提供I2C从机接口，通过该接口可访问配置、状态寄存器。

2.2MHz开关频率有助于大幅减小电感尺寸，降低系统成本。IC包括高精度SOH检查等内置功能，最大程度降低备份电池(BUB)的漏电流。

MAX20094/MAX20095采用28引脚(5mm x 5mm)侧面防潮TQFN封装，经过AECQ-100认证。

MAX20094, MAX20095: Simplified Block Diagram MAX20094, MAX20095: Simplified Block Diagram 放大+

关键特性

  • 高效方案
    • 最小2V同步整流升压，带有n沟道FET控制
    • 跳脉冲模式保证效率高于50% @ 1mA
  • 多功能支持减小方案尺寸
    • 3V至6V CC/CV电池充电器
    • 通过I2C设置充电电流，高达1A
    • 通过I2C选择CV电压和CC电流
    • 栅极驱动输出，支持p沟道负载断开
    • 备份电池切换触发信号
  • 监测备份电池的健康状态
    • I2C接口诊断和控制
    • 高精度内部电流驱动，支持电池阻抗测量
    • 模拟读取备份电池的内部驱动电流
    • 远端检测，支持BATT_电压测量
  • 汽车环境下可靠工作
    • 3.5V至36V VIN (40V抛负载容限)
    • 电池连接引脚漏电流小于1µA
    • -40°C至+125°C工作温度范围
    • 28引脚、侧面防潮TQFN封装，支持光学检测

应用

  • 车载电脑电池备份
  • 单节或多节电池备份系统

参数规格


Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

设计资源


MAX20094EVKIT: Evaluation Kit for the MAX20094/MAX20095
MAX20094EVSYS: Evaluation Kit for the MAX20094/MAX20095
MAX20095EVKIT: Evaluation Kit for the MAX20094/MAX20095
MAX20095EVSYS: Evaluation Kit for the MAX20094/MAX20095

其它资源

Battery Charging with the MAX20094/MAX20095 Backup Battery Charger and Boost Controllers

质量与环境

申请可靠性报告: MAX20094 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

备注： 通过技术手段对故障率进行汇总，并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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参考设计