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Part Number: MAX1666X
Description: The MAX1666 provides complete protection against overvoltage, undervoltage, overcharge current, overdi...
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MAX1666X
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DataSheet
General Description
MAX1666X General Description
The MAX1666 provides complete protection against overvoltage, undervoltage, overcharge current, overdischarge current, and cell mismatch for 2-cell to 4-cell Lithium-Ion battery packs. The voltage of each cell in the battery pack is checked and compared to the programmable threshold and to the other cells in the pack.
The MAX1666 protects the battery pack in an overcurrent condition by disconnecting the pack from the load at a programmable limit. On-chip power MOSFET drivers control external P-channel MOSFETs to disconnect the cells from external terminals when faults occur. The MAX1666 employs a unique timing scheme that allows three modes of operation, for optimal performance and battery power conservation.
The MAX1666 can operate in a stand-alone configuration or in conjunction with a microcontroller. It is available in three versions: the "S" version monitors two Li-Ion cells, the "V" version monitors three cells, and the "X" version monitors four cells.
MAX1666X Maximum Ratings
SRC, DSO, TKO, CGO, UVO, PKF, WRN to GND ...-0.3V to +28V
VCC, REF, OVA, UVA, MMA to GND ........................-0.3V to +6V
B4P to B3P ..........................................................-0.3V to +6V
B3P to B2P ..........................................................-0.3V to +6V
B2P to B1P ..........................................................-0.3V to +6V
B1P to GND..........................................................-0.3V to +6V
PKN to GND......................................................................±2V
VCC, CGI, DSI to PKN...........................................-0.3V to +6V
Continuous Power Dissipation (TA = +70°C)
16-Pin QSOP (derate 8.3mW/°C above +70°C).......667mW
20-Pin QSOP (derate 9.1mW/°C above +70°C).......727mW
Operating Temperature Range ..................-40°C to +85°C
Storage Temperature Range ...................-65°C to +150°C
Lead Temperature (soldering, 10sec) .....................+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VCC, REF, OVA, UVA, MMA to GND ........................-0.3V to +6V
B4P to B3P ..........................................................-0.3V to +6V
B3P to B2P ..........................................................-0.3V to +6V
B2P to B1P ..........................................................-0.3V to +6V
B1P to GND..........................................................-0.3V to +6V
PKN to GND......................................................................±2V
VCC, CGI, DSI to PKN...........................................-0.3V to +6V
Continuous Power Dissipation (TA = +70°C)
16-Pin QSOP (derate 8.3mW/°C above +70°C).......667mW
20-Pin QSOP (derate 9.1mW/°C above +70°C).......727mW
Operating Temperature Range ..................-40°C to +85°C
Storage Temperature Range ...................-65°C to +150°C
Lead Temperature (soldering, 10sec) .....................+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
MAX1666X Features
· Overvoltage Protection Programmable Limits from +4.0V to +4.4V Accurate to ±0.5%
· Undervoltage Protection Programmable Limits from +2.0V to +3.0V Accurate to ±2.5%
· Cell Mismatch Protection Programmable Limits from 0 to 500mV Accurate to ±10%
· Overcharge Current Protection
· Overdischarge Current Protection
· Low Operating Supply Current: 30µA typ
· Low Standby Current: 1µA max
· +28V max Input Voltage
· Available in Small 16-Pin QSOP (MAX1666S) and 20-Pin QSOP (MAX1666V/X) Packages
· Undervoltage Protection Programmable Limits from +2.0V to +3.0V Accurate to ±2.5%
· Cell Mismatch Protection Programmable Limits from 0 to 500mV Accurate to ±10%
· Overcharge Current Protection
· Overdischarge Current Protection
· Low Operating Supply Current: 30µA typ
· Low Standby Current: 1µA max
· +28V max Input Voltage
· Available in Small 16-Pin QSOP (MAX1666S) and 20-Pin QSOP (MAX1666V/X) Packages
MAX1666X Typical Application
2/3/4-Cell Lithium-Ion Battery Pack
MAX1666X Connection Diagram
MAX1666X
PDF/DataSheet Download
- Datasheet: MAX1666X
- File Size: 238594 KB
- Manufacturer: MAXIM [Maxim Integrated Products]
- Click here to Download
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MAX1666X Relative Products
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MAX1666S
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MAX1665X
The MAX1665X provides protection against overvoltage, undervoltage, overcharge current, and overdischarge current for 2-cell to 4-cell lithium-ion (Li+) battery packs. Very low operating current ensures that cells are not overdischarged during long storage p...
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