MAX1879
PRODUCTIONSimple, Efficient, 1-Cell Li+ Pulse Charger
- Part Models
- 2
- 1ku List Price
- Starting From $2.36
Overview
- 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
The MAX1879 single-cell lithium-ion (Li+) battery charger utilizes an efficient pulse-charging architecture to minimize power dissipation in portable devices. This architecture combines the efficiency of switch-mode chargers with the simplicity and low cost of linear chargers. This simple device, in conjunction with a current-limited wall cube and a PMOS transistor, allows safe and fast charging of a single Li+ cell.
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.
Applications
- 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
Documentation
Data Sheet 1
Technical Articles 3
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX1879EUA+ | Micro-MAX, Thin Shrink Small-Outline | ||
| MAX1879EUA+T | Micro-MAX, Thin Shrink Small-Outline |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Battery Charger ICs 1 | ||
| MAX1736 | PRODUCTION | SOT23, Single-Cell Li+ Battery Charger for Current-Limited Supply |
Evaluation Kits
Evaluation Kit for the MAX1879
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