Maxim
/
Products
/
Power
/
Battery Management
/
MAX1811
Power Battery Management MAX1811
Top

MAX1811

Download

USB-Powered Li+ Charger

Printable Data Sheet Subscribe

Product Details

See parametric specs for Battery Chargers

Key Features

See parametric specs for Battery Chargers
Parametric specs for Battery Chargers
Package/Pins SOIC (N)/8
Budgetary
Price (See Notes) 		1.8
See parametric specs for Battery Chargers
View Less

Simplified Block Diagram

Technical Docs

Data Sheet USB-Powered Li+ Charger Jun 18, 2003
Reference Schematic Portable Supply Derives +5V and +3.3V Power from USB Port
App Note Add Current Boost to USB Charger Driven by an AC Adapter
App Note Protection From Blackouts: Dirt Cheap to Fully Integrated
App Note Dual Comparator Thermally Protects Li+ Battery
App Note Monitor Heat Dissipation in Electronic Systems by Measuring Active Component Die Temperature
Tutorial Blood Glucose Meters
Tutorial Important Design Considerations for Heart-Rate and Fitness Monitors
Tutorial Introduction to Hearing Aids and Important Design Considerations

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact [email protected] with any questions regarding this Sample Site.

Parameters

Parametric specs for Battery Chargers
Package/Pins SOIC (N)/8
Budgetary
Price (See Notes) 		1.8
See parametric specs for Battery Chargers

Key Features

  • Charges Single-Cell Li+ Batteries Directly from USB Port
  • 0.5% Overall Charging Accuracy
  • Minimal External Components
  • Input Diode Not Required
  • Automatic IC Thermal Regulation
  • Preconditions Near-Depleted Cells
  • Convenient Power SO-8 Package (1.4W)

Applications/Uses

  • Cell Phones
  • Digital Still Cameras
  • Handheld Computers
  • MP3 Players
  • PDAs and Palmtops
  • Two-Way Paging

Description

The MAX1811 is a single-cell lithium-ion (Li+) battery charger that can be powered directly from a USB port or from an external supply up to 6.5V. It has a 0.5% overall battery regulation voltage accuracy to allow maximum utilization of the battery capacity.

The charger uses an internal FET to deliver up to 500mA charging current to the battery. The device can be configured for either a 4.1V or 4.2V battery, using the SELV input. The SELI input sets the charge current to either 100mA or 500mA. An open-drain output (active-low CHG) indicates charge status.

The MAX1811 has preconditioning that soft-starts a near-dead battery cell before charging. Other safety features include continuous monitoring of voltage and current and initial checking for fault conditions before charging.

The MAX1811 is available in a small 1.4W thermally enhanced 8-pin SO package.

Simplified Block Diagram

MAX1811: Typical Operating Circuit MAX1811: Typical Operating Circuit Zoom icon

Technical Docs

Data Sheet USB-Powered Li+ Charger Jun 18, 2003
Reference Schematic Portable Supply Derives +5V and +3.3V Power from USB Port
App Note Add Current Boost to USB Charger Driven by an AC Adapter
App Note Protection From Blackouts: Dirt Cheap to Fully Integrated
App Note Dual Comparator Thermally Protects Li+ Battery
App Note Monitor Heat Dissipation in Electronic Systems by Measuring Active Component Die Temperature
Tutorial Blood Glucose Meters
Tutorial Important Design Considerations for Heart-Rate and Fitness Monitors
Tutorial Introduction to Hearing Aids and Important Design Considerations

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact [email protected] with any questions regarding this Sample Site.