DRV8809 Datasheet, PDF (37/44 Pages) Texas Instruments – COMBINATION MOTOR DRIVERS WITH DC-DC CONVERTERS

DRV8809
DRV8810
www.ti.com ............................................................................................................................................................... SLVS854A – JULY 2008 – REVISED JULY 2008
VthVM+
VM
VM=6.0v
VthVM-
VM=5.0v
Mask
DC/DC_B
DC/DC_C
nORT
protection
mask
A. Only channels B and C are shown. Same applies to Channel A.
Figure 30. Power Down (Glitch on V_M)
VthVM+
VM=6.0v
VM
VM=5.0v
( CSELECT
= OPEN )
DC/DC_B
DC/DC_ C
10 ms
(Note A)
VthVM+
VthVM-
Restart
Shutdown
10 ms
(Note A)
40 ms
t
nORT
=L
in case
t <120 ms
120 ms
protection
mask
=H
A. Charge-pump wake-up delay, from 10 ms to 20 ms, due to asynchronous event capture
B. Only channels B and C are shown. Same applies to Channel A.
Figure 31. Power Down (Glitch on V_M Below VthV_)
Copyright © 2008, Texas Instruments Incorporated
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