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The MAX1640 evaluation kit (EV kit) is an adjustable switch-mode current source that operates from a 5.5V to 26V input. It is intended for microprocessor-controlled battery chargers. The charging current, maximum voltage, and pulse-trickle charge are programmed with external resistors. The EV kit is shipped configured for a maximum charge voltage (6 cells). It is configured as a step-down pulse-width modulator (PWM) with synchronous rectification, allowing fast-charge currents up to 1.5A with greater than 90% efficiency. The MAX1640 uses high-side current sense; this allows the load to connect directly to ground, eliminating ground potential errors. The MAX1641 uses low-side current sense.
The MAX1640 EV kit is a fully assembled and tested surface-mount printed circuit board. It can also be used to evaluate the MAX1641.
The MAX1640 EV kit is a fully assembled and tested surface-mount printed circuit board. It can also be used to evaluate the MAX1641.
Key Features
- 5.5V to 26V Input Voltage Range
- Tight Current-Regulation Accuracy:
- 2% (MAX1641)
- 5% (MAX1640)
- Up to 1.5A Fast-Charge Current
- Up to 500kHz PWM Operation
- Pulse-Trickle Charge Current
- 100% Maximum Duty Cycle (low dropout)
- Synchronous Rectifier
- Surface-Mount Components
- Fully Assembled and Tested
Applications/Uses
- Backup Battery Charger
- Battery-Powered Applications
- Cell Phones
- Cordless Phones
- Handy Terminals
- Laptop, Notebook, and Palmtop Computers
- PCS Phones
- Portable Consumer Products
Technical Docs
| Data Sheet | Evaluation Kit for the MAX1640, MAX1641 | Jul 01, 1997 |
Click any title below to view the detail page where available.
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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
- 5.5V to 26V Input Voltage Range
- Tight Current-Regulation Accuracy:
- 2% (MAX1641)
- 5% (MAX1640)
- Up to 1.5A Fast-Charge Current
- Up to 500kHz PWM Operation
- Pulse-Trickle Charge Current
- 100% Maximum Duty Cycle (low dropout)
- Synchronous Rectifier
- Surface-Mount Components
- Fully Assembled and Tested
Applications/Uses
- Backup Battery Charger
- Battery-Powered Applications
- Cell Phones
- Cordless Phones
- Handy Terminals
- Laptop, Notebook, and Palmtop Computers
- PCS Phones
- Portable Consumer Products
Description
The MAX1640 evaluation kit (EV kit) is an adjustable switch-mode current source that operates from a 5.5V to 26V input. It is intended for microprocessor-controlled battery chargers. The charging current, maximum voltage, and pulse-trickle charge are programmed with external resistors. The EV kit is shipped configured for a maximum charge voltage (6 cells). It is configured as a step-down pulse-width modulator (PWM) with synchronous rectification, allowing fast-charge currents up to 1.5A with greater than 90% efficiency. The MAX1640 uses high-side current sense; this allows the load to connect directly to ground, eliminating ground potential errors. The MAX1641 uses low-side current sense.
The MAX1640 EV kit is a fully assembled and tested surface-mount printed circuit board. It can also be used to evaluate the MAX1641.
The MAX1640 EV kit is a fully assembled and tested surface-mount printed circuit board. It can also be used to evaluate the MAX1641.
Technical Docs
| Data Sheet | Evaluation Kit for the MAX1640, MAX1641 | Jul 01, 1997 |
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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