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MAX38886

MAX38886

2.5V to 5.0V, 0.5A/2.5A, Charge/Discharge Regulator for Supercapacitor Backup Applications

Family of Backup Power Regulators Using Supercapacitor or Capacitor Bank

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概述

说明

The MAX38886 is a storage capacitor or capacitor bank backup regulator designed to efficiently transfer power between a storage element and a system supply rail in reversible buck and boost operations using the same inductor.

When the main supply is present and above the minimum system supply voltage, the regulator operates in buck mode and charges the storage element at up to 500mA peak inductor current. Once the storage element is charged, the circuit draws only 2.5μA of current while it maintains the supercapacitor or other storage element in its ready state. When the main supply is removed, the regulator operates in boost mode and prevents the system from dropping below the minimum operating voltage, discharging the storage element at up to 2.5A peak inductor current.

The MAX38886 is externally programmable for minimum and maximum voltage of the storage element, such as supercapacitor, minimum system voltage, and maximum charge and discharge currents. The internal DC-DC converter requires only a 1µH inductor.

MAX38886: Typical Application Circuit MAX38886:Typical Application Circuit 放大+

关键特性

  • 2.5V to 5V System Output Voltage
  • Up to 4.5V Capacitor Voltage Range
  • Up to 2.5A Peak Inductor Discharge Current
  • Programmable Voltage and Current Thresholds
  • ±2% Threshold Accuracy
  • Up to 95% Efficiency, Charge or Discharge
  • 2.5μA Ready Quiescent Current
  • Small Solution Size
    • 3mm x 3mm x 0.75mm TDFN Package

应用

  • 手持式工业设备
  • 便携式计算机
  • 具有可拆卸电池的便携式设备

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


MAX38886EVKIT: Evaluation Kit for the MAX38886

工具和模型

  • EE-Sim: MAX38886 设计和仿真

    • 质量与环境

    申请可靠性报告: MAX38886 
    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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    工具和模型

    参考设计

    类型 编号 标题
    评估板10704MAX38886EVKIT Evaluation Kit for the MAX38886