Technical Product Specification

Hardware Intel® RAID Smart Battery AXXRSBBU3 Technical Product Specification

Revision 1.6

Intel order number D84273-006

Pin # Signal Description

13 BBU_SMBCL I2C Clock

14 GND Ground

15 BBU_SMBDA I2C Data

16 TM_PFAIL Battery Backup Power Fail Detect

17 GND Ground

18 BBE Battery Backup Enable

19 BBSTROBE Battery Backup Strobe

20 TM_STATUS Battery Backup Status

2.5 Smart Refresh Circuit Board

The Intel

RAID Smart Battery AXXRSBBU3 is based on the Texas Instruments bq2060A SBS

v1.1-compliant Gas Gauge IC. The following are the key features of the SBS v1.1 IC:

 Provides accurate measurement of available charge

 Supports SBS Smart Battery Data Specification v1.1

 Reports voltages

 Provides voltage, temperature, and current measurements

 Measures charge flow using a V-to-F converter with an offset of less than 16μV after

calibration

The bq2060A SBS-compliant Gas Gauge IC for the battery pack maintains an accurate record

of the available charge. It determines battery capacity by monitoring the amount of charge

available to or removed from a rechargeable battery.

The bq2060A measures battery voltage, temperature, and current, estimates battery self-

discharge, and monitors the battery for low-voltage thresholds. It measures charge and

discharge activity by monitoring the voltage across a small-value series sense resistor between

the battery’s negative terminal and the negative terminal of the battery pack. The available

battery charge is determined by monitoring this voltage and correcting the measurement for

environmental and operating conditions.

For more information about the Texas Instruments bq2060A SBS v1.1-compliant Gas Gauge IC,

refer to the manufacturer web site.

The following are the features of the Intel

RAID Smart Battery AXXRSBBU3:

 Integrates into the battery pack

 Reduces host CPU (Central Processing Unit) intervention

 Shares I

C bus with the on-board EEPROM (Electrically Erasable Programmable Read-

Only Memory) for memory

 Provides real-time battery status information

 Displays a low charge warning

 Provides instantaneous voltage, current, and temperature information

 Provides remaining battery charge percentage and at-rate information