The Future of Analog IC Technology
Li-Ion Battery Charger
Protection Circuit With LDO Mode
The MP2678 is a high performance single cell
Li-Ion/Li-Polymer battery charger protection IC.
By integrating the high voltage input protection,
the MP2678 can tolerate an input surge up to
The device operates like a linear regulator,
maintaining a 5V output with the input voltage
up to the over voltage protection threshold.
MP2678 features input over voltage protection
(OVP), battery over voltage protection (BOVP)
and over charge current protection (OCP).
When any fault condition happens, the IC will
immediately turn off the internal N-MOSFET to
disconnect the charging circuit from the input.
The device also provides fault indications to the
system when any of the protection events
For guaranteed safe operation, the MP2678
monitors its own internal temperature and turns
off the internal N-MOSFET bridging IN and
OUT when the die temperature exceeds 140oC.
The MP2678 is available in an 8-pin 2mm x
2mm QFN package.
• Input Surge up to 30V
• Input Over Voltage Protection
• Proprietary Battery Over-Voltage Protection
• Output Short-Circuit Protection
• Soft-Stop to Prevent Voltage Spikes
• Support up to 1.7A Load Current
• Thermal Monitoring and Protection
• Enable Function
• Fault Indication
• 2 mm×2mm QFN Package
• Cell Phones
• Smart Phones
• MP3 Players
• Low-Power Handheld Devices
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TYPICAL APPLICATION CIRCUIT
MP2678 Rev. 1.0
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