MP2678 Datasheet: Li-Ion Battery Charger Protection Circuit





MP2678 Li-Ion Battery Charger Protection Circuit Datasheet

Part Number MP2678
Description Li-Ion Battery Charger Protection Circuit
Manufacture MPS
Total Page 11 Pages
PDF Download Download MP2678 Datasheet PDF

Features: The Future of Analog IC Technology MP26 78 Li-Ion Battery Charger Protection Ci rcuit With LDO Mode DESCRIPTION The MP 2678 is a high performance single cell Li-Ion/Li-Polymer battery charger prote ction IC. By integrating the high volta ge input protection, the MP2678 can tol erate an input surge up to +30V. The de vice operates like a linear regulator, maintaining a 5V output with the input voltage up to the over voltage protecti on threshold. MP2678 features input ove r voltage protection (OVP), battery ove r voltage protection (BOVP) and over ch arge current protection (OCP). When any fault condition happens, the IC will i mmediately turn off the internal N-MOSF ET to disconnect the charging circuit f rom the input. The device also provides fault indications to the system when a ny of the protection events happens. Fo r guaranteed safe operation, the MP2678 monitors its own internal temperature and turns off the internal N-MOSFET bri dging IN and OUT when the die temperature exceeds 140oC. The MP.

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The Future of Analog IC Technology
MP2678
Li-Ion Battery Charger
Protection Circuit With LDO Mode
DESCRIPTION
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
+30V.
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
happens.
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.
FEATURES
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
APPLICATIONS
Cell Phones
Smart Phones
PDAs
MP3 Players
Low-Power Handheld Devices
For MPS green status, please visit MPS website under Quality Assurance.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION CIRCUIT
VIN
3.3V~VOVP
VIN
On Off
VIN OUT
MP2678
CE VB
GND
FLT
RFLT
LINEAR
BATTERY
CHARGER
COUT
RVB
Battery
Pack
MP2678 Rev. 1.0
1/6/2011
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
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