BTS 726 L1
Figure 5c: Open load: detection in ON- and OFF-state
(with REXT), turn on/off to open load
IN
Figure 6b: Undervoltage restart of charge pump
V on
VON(CL)
ST
V
OUT
I
L
t
d(ST)
open
Figure 6a: Undervoltage:
IN
V bb
V
OUT
V
bb(under)
V
bb(over)
V
bb(u rst)
V
bb(o rst)
V bb(under)
V
bb(u cp)
t
IN = high, normal load conditions.
Charge pump starts at Vbb(ucp) = 5.6 V typ.
V bb
Figure 7a: Overvoltage:
V
bb(u rst)
IN
Vbb
V ON(CL) Vbb(over)
V bb(o rst)
V
OUT
ST
ST
t
t
Semiconductor Group
14