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Battery Management 
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DS2712
Loose-Cell NiMH Chargers
NiMH Battery Charger Detects and Avoids Charging Alkaline Cells
MyMaxim SubscriptionsProduct Details
Key Features
Applications/Uses
Parametric specs for Battery Chargers
| Package/Pins | SOIC (N)/16 TSSOP/16 |
| Budgetary Price (See Notes) | 2.02 |
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Simplified Block Diagram
Technical Docs
| Data Sheet | Loose-Cell NiMH Chargers | Apr 19, 2011 | |
| App Note | Detecting Primary Cells with the DS2711/12 | ||
| App Note | Charging Batteries from USB | ||
| Tutorial | Overview of Rechargeable Batteries and Fast Stand-Alone Chargers | ||
| App Note | Estimating Switching Speed for the DS2712 NiMH Battery Charger |
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 .
Parameters
Parametric specs for Battery Chargers
| Package/Pins | SOIC (N)/16 TSSOP/16 |
| Budgetary Price (See Notes) | 2.02 |
Key Features
- Charge 1 or 2 NiMH Cells
- Detect and Avoid Charging Alkaline Cells
- Precharge Deeply Depleted Cells
- Fast Charge NiMH with -ΔV Termination Sensitivity of 2mV (typ)
- Monitor Voltage, Temperature, and Time for Safety and Secondary Termination
- Regulate Charge Current:
- Linear Control (DS2711)
- Switch-Mode Control (DS2712)
- Drive PMOS or PNP-Type Pass Element or Switch, or an Optocoupler
- Compatible with Popular Optocouplers and Integrated Primary Side PWM Controllers
- Small 16-Pin SO or TSSOP Package
Applications/Uses
- Desktop/Stand-Alone Chargers (AAA/AA)
- Digital Still Cameras
- Gaming
- Music Players
- Toys
Description
The DS2711 and DS2712 are ideal for in-system or stand-alone charging of 1 or 2 AA or AAA NiMH "loose" cells. Temperature, voltage, and charge time are monitored to provide proper fast charging control algorithms for nickel metal hydride (NiMH) batteries. Battery tests are included to detect defective or inappropriate cells such as alkaline primary batteries. The DS2711/DS2712 support series and parallel topologies, with independent monitoring and control of each cell. Charging of NiCd chemistry cells is also supported.
Technical Docs
| Data Sheet | Loose-Cell NiMH Chargers | Apr 19, 2011 | |
| App Note | Detecting Primary Cells with the DS2711/12 | ||
| App Note | Charging Batteries from USB | ||
| Tutorial | Overview of Rechargeable Batteries and Fast Stand-Alone Chargers | ||
| App Note | Estimating Switching Speed for the DS2712 NiMH Battery Charger |
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 .
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