MAX1667
Chemistry-Independent, Level 2 Smart Battery Charger
1%-Accurate, Chemistry-Independent, Smart Battery Charger Easily Charges 2-4 Series Li+ Cells
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Overview
Features and Benefits
- Charges Any Battery Chemistry: Li+, NiCd, NiMH, Lead Acid, etc.
- SMBus 2-Wire Serial Interface
- Compliant with Duracell/Intel Smart Battery Charger Specification Rev. 1.0
- 4A, 3A, or 1A (max) Battery Charge Current
- 5-Bit Control of Charge Current
- Up to 18.4V Battery Voltage
- 11-Bit Control of Voltage
- ±1% Voltage Accuracy
- Up to +28V Input Voltage
- Battery Thermistor Fail-Safe Protection
- Greater than 95% Efficiency
- Synchronous Rectifier
Product Details
The MAX1667 provides the power control necessary to charge batteries of any chemistry. All charging functions are controlled through the Intel® System Management Bus (SMBus™) interface. The SMBus 2-wire serial interface sets the charge voltage and current and provides thermal status information. The MAX1667 functions as a Level 2 charger, compliant with the Duracell®/Intel Smart Battery Charger Specification.
In addition to the feature set required for a Level 2 charger, the MAX1667 generates interrupts to signal the host when power is applied to the charger or when a battery is installed or removed. Additional status bits allow the host to check whether the charger has enough input voltage, and whether the voltage on or current into the battery is being regulated. This allows the host to determine when lithium-ion (Li+) batteries have completed the charge without interrogating the battery.
The MAX1667 is available in a 20-pin SSOP with a 2mm profile height.
Applications
- Charger Base Stations
- Notebook Computers
- PDAs and Other Handheld Devices
- Phones
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
Design Resources
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.
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Buy Now Pricing
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List Pricing
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Lead Times
Please see the latest communication from our CCO regarding lead times.
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