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HT7660
Combined negative voltage converter and positive voltage doubler
V DD
2 CAP+
8
VDD
10mF
4 CAP-
VO UT 5
3 VSS
V O UT= - V DD
D1
10mF
H T7660
10mF
D2
V O UT= 2 V DD - 2 V D
10mF
N o te : V D is fo r w a r d v o lta g e d r o p o f d io d e D 1 a n d D 2
8
November 30, 1999