SMB139 View Datasheet(PDF) - Summit Microelectronics

Part Name

Description

Manufacturer

SMB139

Programmable Linear Battery Charger in 1.3 x 2.1 uCSP™

Summit Microelectronics 

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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