Product Details
Key Features
Applications/Uses
Charging VIN (V) (max) | 22 |
Max. ICHG (A) | 2 |
Cell Chemistry | Li-Ion Li-Polymer |
# Lithium Ion Cells | 1 |
Protected VIN (V) (max) | 22 |
Charger (V) | 4 to 4.2 |
Oper. Temp. (°C) | -40 to +85 |
Package/Pins | UMAX/8 |
Budgetary Price (See Notes) | 1.78 |
Simplified Block Diagram
Technical Docs
Data Sheet | Simple, Efficient, 1-Cell Li+ Pulse Charger | May 30, 2001 | |
App Note | Design Case Study: Designing a Power Supply for a Portable, Wireless Contact Manager |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur 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
Charging VIN (V) (max) | 22 |
Max. ICHG (A) | 2 |
Cell Chemistry | Li-Ion Li-Polymer |
# Lithium Ion Cells | 1 |
Protected VIN (V) (max) | 22 |
Charger (V) | 4 to 4.2 |
Oper. Temp. (°C) | -40 to +85 |
Package/Pins | UMAX/8 |
Budgetary Price (See Notes) | 1.78 |
Key Features
- Simple Design Minimizes Heat
- Low Component Count, No Inductor
- Battery-Full Indicator
- 0.75% Accurate Battery Regulation
- 1.5µA (max) Battery Current Drain with Wall Cube Removed
- Restart Charging at 4.0V
- Continuous Overvoltage and Overtemperature Protection
- Safely Precharges Near-Dead Cells
- Automatic Power-Down when Power Source is Removed
- Charges 1 Cell from as Low as 4.5V
- Pin-Compatible Upgrade to MAX1679
Applications/Uses
- Cell Phones
- Consumer Audio
- Cordless Phones
- Digital Still Cameras
- Global Positioning Systems (GPS)
- Pagers
- Palmtops, Handy Terminals
- Pen Entry Palmtops, PDAs and Organizers
- Smart Battery Packs/Chargers
Description
The MAX1879 initiates charging in one of three ways: battery insertion, charger power-up, or toggling the THERM pin. Key safety features include continuous voltage and temperature monitoring, a preset charger time-out, and an 8mA precharge current mode to charge near-dead cells. Automatic detection of input power removal shuts down the device, minimizing current drain from the battery. An overall system accuracy of 0.75% ensures that the cell capacity is fully utilized without cycle life degradation.
The MAX1879 is offered in a space-saving 8-pin µMAX® package. An evaluation kit (MAX1879EVKIT) is available to help reduce design time.
Technical Docs
Data Sheet | Simple, Efficient, 1-Cell Li+ Pulse Charger | May 30, 2001 | |
App Note | Design Case Study: Designing a Power Supply for a Portable, Wireless Contact Manager |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur 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.