
Figure 6a: Undervoltage:
IN
V bb
V
bb(under)
V OUT
Figure 7a: Overvoltage:
BTS720L1
Vbb(u cp)
Vbb(u rst)
IN
Vbb
VON(CL) Vbb(over)
V bb(o rst)
V
OUT
ST
ST open drain
t
t
Figure 6b: Undervoltage restart of charge pump
Von
VON(CL)
V
bb(over)
V
bb(u rst)
V
bb(under)
V
bb(u cp)
V
bb(o rst)
IN = high, normal load conditions.
Charge pump starts at Vbb(ucp) = 5.6 V typ.
V bb
Semiconductor Group
Page 13
26.Feb.96