MAX8731AETI+

The MAX8731AETI+ is an SMBus level-2 battery charger with remote sense in 28 pin TQFN package. It uses a minimal command set to easily program the charge voltage, charge current and adapter current limit. The device charges one to four Li+ series cells and delivers up to 8A charge current. It drives n-channel MOSFETs for improved efficiency and reduced cost. Low-offset current-sense amplifiers provide high accuracy with 10mΩ sense resistors. The charger employs dual remote sense which reduces charge time by measuring the feedback voltage directly at the batter and improves accuracy of initial transition in constant-voltage mode.

• 0.5% battery voltage accuracy
• 3% input current-limit accuracy, 3% charge-current accuracy
• Cycle by cycle current limit
• Dual remote-sense inputs
• Monitor outputs for adapter current and AC adapter detection
• 11bit battery voltage setting
• 6bit charge current/input current setting
• Charges Li+, NiMH and NiCd battery chemistries
• Operating temperature range from -40°C to 85°C
• 12-Bit ADCs and DACs; Digital Multimeters; Low-Power Test Equipment; Portable Data-Acquisition Systems

Applications

Power Management, Portable Devices

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party