DRV8809 Datasheet, PDF (33/44 Pages) Texas Instruments – COMBINATION MOTOR DRIVERS WITH DC-DC CONVERTERS

DRV8809
DRV8810
www.ti.com ............................................................................................................................................................... SLVS854A – JULY 2008 – REVISED JULY 2008
Figure 24. Power-Up Timing (Power Up Without DC-DC Turn-On: C_SELECT = GND)
NOTE:
When V_M crosses VthV_M+ (about 6 V) with C_SELECT = GND, none of the three
regulators are turned on. The nORT output is released to H after 300 ms from the
VthV_M+ crossing.
See Note B
120 ms
(See Note A)
A. 120 ms to 140 ms due to asynchronous event capture
B. After VM power up, DC-DC starts at the setup register strobe.
Figure 25. Power-Up Timing (DC-DC Regulator Wake Up by Setup Register)
NOTE:
Copyright © 2008, Texas Instruments Incorporated
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