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MAX1645A
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MAX1645A

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高级、与化学类型无关的Level 2电池充电器，带有输入限流

SMBus™总线控制，具有输入限流及安全定时器，为各种化学类型的电池提供智能充电

可打印的数据手册 订阅

产品详情

请参见参数规范 Battery Chargers

主要特征

请参见参数规范 Battery Chargers
Parametric specs for Battery Chargers
Charging VIN (V) (max) 28
Max. ICHG (A) 3
Lithium Ion Cells 2
3
4
Protected VIN (V) (max) 28
Charge Rate Set by I2C/SMBus
Resistor
Charge Termination Smart Battery Control
Charge Regulation Switchmode
Oper. Temp. (°C) -40 to +85
Package/Pins See Data Sheet
请参见参数规范 Battery Chargers
缩小

简化框图

Technical Docs

数据资料 高级、与化学类型无关的Level 2电池充电器，带有输入限流 Dec 12, 2001
应用笔记 Battery Chargers Fulfill System Power Requirements and Charge Batteries
应用笔记 Battery Chargers Fulfill System Power Requirements and Charge Batteries

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在Maxim的知识库中搜索技术问题的答案

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Maxim的专业工程师团队也会为您解答相应的技术问题，请访问Maxim的 支持中心 。

采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后，所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站，请创建一个新帐户。有关此样片网站的任何问题，请联系[email protected]。

参量

Parametric specs for Battery Chargers
Charging VIN (V) (max) 28
Max. ICHG (A) 3
Lithium Ion Cells 2
3
4
Protected VIN (V) (max) 28
Charge Rate Set by I2C/SMBus
Resistor
Charge Termination Smart Battery Control
Charge Regulation Switchmode
Oper. Temp. (°C) -40 to +85
Package/Pins See Data Sheet
See parametric specs for Battery Chargers

主要特征

  • Input Current Limiting
  • 175sec Charge Safety Timeout
  • 128mA Wake-Up Charge
  • Charges Any Chemistry Battery: Li+, NiCd, NiMH, Lead Acid, etc.
  • Intel SMBus 2-Wire Serial Interface
  • Compliant with Level 2 Smart Battery Charger Spec. Rev. 1.0
  • +8V to +28V Input Voltage Range
  • Up to 18.4V Battery Voltage
  • 11-Bit Battery Voltage Setting
  • ±0.8% Output Voltage Accuracy with Internal Reference
  • 3A max Battery Charge Current
  • 6-Bit Charge Current Setting
  • 99.99% max Duty Cycle for Low-Dropout Operation
  • Load/Source Switchover Drivers
  • >97% Efficiency

应用/用途

  • 笔记本电脑
  • PDA及其它手持设备
  • 销售终端机(POS)

描述

The MAX1645 is a high-efficiency battery charger capable of charging batteries of any chemistry type. It uses the Intel® System Management Bus (SMBus™) to control voltage and current charge outputs.

When charging lithium-ion (Li+) batteries, the MAX1645 automatically transitions from regulating current to regulating voltage. The MAX1645 can also limit line input current so as not to exceed a predetermined current drawn from the DC source. A 175sec charge safety timer prevents "runaway charging" should the MAX1645 stop receiving charging voltage/current commands.

The MAX1645 employs a next-generation synchronous buck control circuitry that lowers the minimum input-to-output voltage drop by allowing the duty cycle to exceed 99%. The MAX1645 can easily charge one to four series Li+ cells.

简化框图

MAX1645、MAX1645A：典型工作电路 MAX1645、MAX1645A：典型工作电路 Zoom icon

Technical Docs

数据资料 高级、与化学类型无关的Level 2电池充电器，带有输入限流 Dec 12, 2001
应用笔记 Battery Chargers Fulfill System Power Requirements and Charge Batteries
应用笔记 Battery Chargers Fulfill System Power Requirements and Charge Batteries

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题，请访问Maxim的 支持中心 。

采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后，所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站，请创建一个新帐户。有关此样片网站的任何问题，请联系[email protected]。