bq26501

SLUS586B − OCTOBER 2003 − REVISED MARCH 2004

21

www.ti.com

APPLICATION INFORMATION

POWER MODES

The bq26501 has four power modes: active, sleep, ship, and hibernate. Figure 5 shows the flow that moves the

device between the active, sleep, and ship modes. Hibernate is a special mode not included in the flow. Detailed

explanations of each mode follow the diagram.

YES

NO

NO

YES

NO

YES

YES

NO

YES

YES

YES

NO

NO

NO

VRs

below DMF

threshold?

HDQ pulled

high?

HDQ pulled

high?

Sleep Mode

Device enters

active mode for

16 seconds

4 hour wake?

HDQ low for

16 seconds?

Ship Mode

Active Mode

Ship Enabled?

1st, 4th, 7th, etc.

wakeup?

Figure 5. Power Mode Flow Chart