Datasheet

Hardware Connection

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To start charge or discharge test, connect the PRES pin to the Pack– pin to set PRES state. To test sleep

mode, disconnect the PRES pin.

Figure 9. bq28400 Circuit Module Connection to Cells and System Load/Charger

7.2 PC Interface Connection

To configure the hardware to interface to the PC, follow these steps:

1. Connect the bq28400-based smart battery to the EV2x00 using wire leads, as shown in Table 4.

Table 4. Circuit Module to EV2x00 Connections

bq28400-Based Battery EV2x00

SMBD SMBD

SMBC SMBC

VSS GND

2. Connect the PC USB cable to the EV2x00 and the PC USB port.

The bq28400 is now set up for operation.

bq28400EVM-001 SBS 1.1 Compliant Tablet PC and Netbook 2-Series Cell SLUU494–February 2011

Li-Ion Battery Gas Gauge and Protection

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