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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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。

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
Part NumberLithium Ion CellsProtected VIN
(V)
Charging VIN
(V)
Charge Rate Set byMax. ICHG
(A)
Charge TerminationCharge RegulationOper. Temp.
(°C)
Package/PinsBudgetary
Price
maxmaxSee Notes
MAX20094 177I2C/SMBus1
Current Limit
External Control
Max. Voltage
Min. Charge Current
Smart Battery Control
Linear
-55 to +125
-40 to +85
-40 to +125
TQFN/28
$2.96 @1k
MAX20095 
TQFN/28
查看所有Battery Chargers (74)
Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。


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
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

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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