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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· Overdischar...

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SeekIC No. : 004409164 Detail

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 Protect...

MAX1666X Data Sheet

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Part Number:
MAX1666X
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/27

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Product Details

Description



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


Application

2/3/4-Cell Lithium-Ion Battery Pack


Pinout

Connection Diagram


Specifications

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.


Description

The MAX1666X 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 MAX1666X 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 MAX1666X 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.




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