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Maxim产品 - MAX1501介绍

MAX1501 - 高集成度、线性电池充电器，带有热调节，用于便携式应用

MAX1501是Maxim美信半导体公司的一款电池管理产品，MAX1501是高集成度、线性电池充电器，带有热调节，用于便携式应用，本站介绍了MAX1501的封装应用图解、特点和优点、功能等，并给出了与MAX1501相关的Maxim元器件型号供参考。

MAX1501 - 高集成度、线性电池充电器，带有热调节，用于便携式应用 - 电池管理 - 首款带温度调节的CC-CV电池充电器，提供过压保护，适用于便携产品 - 美信半导体

产品概述

The MAX1501 intelligent, constant-current, constant-voltage(CCCV), temperature-regulated battery chargercharges a single lithium-ion (Li+) cell or three-cellNiMH/NiCd batteries. The device integrates the current-senseresistor, PMOS pass element, and thermal-regulationcircuitry, while eliminating the reverse-blockingSchottky diode to create the simplest chargingsolution for hand-held equipment.

For single-cell Li+ batteries, the MAX1501 functions as astand-alone charger to control the charging sequencefrom the prequalification state through fast charge, top-off,and charge termination. With 3-cell NiMH/NiCdbatteries, the MAX1501 requires collaboration with amicrocontroller to determine the best charging algorithm.Proprietary thermal-regulation circuitry limits the die temperaturewhen fast charging or while exposed to highambient temperatures, allowing maximum charging currentwithout damaging the charger. The MAX1501 continuallysupplies a regulated output voltage underno-battery conditions, allowing battery changing withoutinterrupting system power.

The device achieves high flexibility by providing anadjustable fast-charge current, top-off current, safetytimer (disabled in the MAX1501Z), and thermal-regulationsetpoint. Other features include input power detection(active-low ACOK) and input under-/overvoltage protection.The MAX1501 provides active-low control inputs.

The MAX1501 accepts a 4.5V to 13V supply, butdisables charging when the input voltage exceeds6.5V, preventing excessive power dissipation. TheMAX1501 operates over the extended temperaturerange (-40°C to +85°C) and is available in a compact16-pin thermally enhanced 5mm x 5mm thin QFNpackage with 0.8mm profile.

关键特性
  • 以下关键特性由Maxim美信半导体提供：
  • Stand-Alone 1-Cell Li+ Charging, Microprocessor-Controlled 3-Cell NiMH/NiCd Charging
  • No FET, Reverse-Blocking Diode, or Current-Sense Resistor Required
  • 1.4A (max) Programmable Fast-Charge Current
  • +95°C, +115°C, and +135°C ProprietaryProgrammable Die Temperature RegulationControl
  • 4.5V to 13V Input Voltage Range with InputOvervoltage (OVLO) Protection Above 6.5V
  • Programmable Top-Off Current Threshold: 10%,20%, or 30% of the Fast-Charge Current
  • Charge-Current Monitor for Fuel Gauging
  • Programmable Safety Timer (3, 4.5, or 6 hours)
  • Input Power Detection Output (active-low ACOK) and ChargeEnable Input (active-low CHGEN)
  • Automatic Recharge
  • Digital Soft-Start Limits Inrush Current
  • Charge Status Outputs for LEDs or µP Interface
    • 热门应用
  • Bluetooth®设备
  • 蜂窝电话/无绳电话
  • 充电托架和坞站
  • 数码相机与MP3播放器
  • PDA
  • USB应用
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