SMB139 View Datasheet(PDF) - Summit Microelectronics
Part Name
Description
MFG CO.
'SMB139' PDF : 27 Pages View PDF
APPLICATIONS INFORMATION (CONTINUED)
in a volatile manner, Register 31[7] must first be set
high.
FAULT and STATUS Indicators
A large number of battery charging conditions and
parameters are monitored and corresponding fault and
status indications are available to the user via the I2C
compatible registers. These include the following:
• Charging status
• Safety timer timeout
• Over-temperature alarm
• Under-temperature alarm
• Over-voltage alarm
• Under-voltage alarm
• Missing battery detection
Internal Thermal Protection
When the die temperature of the SMB139 reaches
approximately 110°C, charge current will be reduced to
prevent further die heating. This internal thermal
protection circuit helps to improve device (and
consequently, system) reliability.
SMB139
Summit Microelectronics, Inc
2121 3.0 6/19/2008
12
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