MAX712
NiCd/NiMH Battery Fast-Charge Controllers
Charges 1-16 Series Cells at Rates Up to 4C
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The MAX712 terminates fast charge by detecting zero voltage slope, while the MAX713 uses a negative voltage-slope detection scheme. Both parts come in 16-pin DIP and SO packages. An external power PNP transistor, blocking diode, three resistors, and three capacitors are the only required external components.
The evaluation kit is available: Order the MAX712EVKIT-DIP for quick evaluations of the linear charger.
Key Features
- Fast-Charge NiMH or NiCd Batteries
- Voltage Slope, Temperature, and Timer Fast-Charge Cutoff
- Charge 1 to 16 Series Cells
- Supply Battery's Load While Charging (Linear Mode)
- Fast Charge from C/4 to 4C Rate
- C/16 Trickle-Charge Rate
- Automatically Switch from Fast to Trickle Charge
- Linear Mode Power Control
- 5µA (max) Drain on Battery when Not Charging
- 5V Shunt Regulator Powers External Logic
Applications/Uses
- Cellular Phones
- Cordless Phones
- Handy-Terminals
- Laptop, Notebook, and Palmtop Computers
- Portable Stereos
Technical Docs
Click any title below to view the detail page where available.
Description
The MAX713SWEVKIT-SO is a fully assembled and tested surface-mount board. The MAX713 high-current, switch-mode battery charger controls a P-channel power MOSFET, allowing charge currents up to 1A. Switch-mode operation typically provides 75%-efficient conversion, reducing heat compared to linear-regulator solutions.
The MAX713SWEVKIT can also be used to evaluate the MAX712 just by replacing the MAX713CSE with a MAX712CSE.
Features
- Up to 1A Charge Current
- 45V Peak Input Voltage Range
- Switch-Mode Operation Reduces Heat Dissipation
- Surface-Mount Components
- Charges 1 to 16 Series Cells
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
Key Features
- Fast-Charge NiMH or NiCd Batteries
- Voltage Slope, Temperature, and Timer Fast-Charge Cutoff
- Charge 1 to 16 Series Cells
- Supply Battery's Load While Charging (Linear Mode)
- Fast Charge from C/4 to 4C Rate
- C/16 Trickle-Charge Rate
- Automatically Switch from Fast to Trickle Charge
- Linear Mode Power Control
- 5µA (max) Drain on Battery when Not Charging
- 5V Shunt Regulator Powers External Logic
Applications/Uses
- Cellular Phones
- Cordless Phones
- Handy-Terminals
- Laptop, Notebook, and Palmtop Computers
- Portable Stereos
Description
The MAX712 terminates fast charge by detecting zero voltage slope, while the MAX713 uses a negative voltage-slope detection scheme. Both parts come in 16-pin DIP and SO packages. An external power PNP transistor, blocking diode, three resistors, and three capacitors are the only required external components.
The evaluation kit is available: Order the MAX712EVKIT-DIP for quick evaluations of the linear charger.
Technical Docs
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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