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V
在
SW
FB
EN
地
L1
6.8
µ
H
D1
R1
1.5 m
R2
210 k
C
FF
22 pf
C2
1
µ
F
v1 = 10 v/15 毫安
V
在
= 2.7 v 至 5 v
C1
4.7
µ
F
C4
4.7
µ
F
C3
1
µ
F
v2 = -10 v/15 毫安
D2
D3
l1: murata lqh4c6r8m04
d1, d2, d3: motorola mbr0530
c1: Tayo yuden jmk212by475mg
c2, c3, c4: Tayo yuden emk316bj105kf
TPS61040
V
在
SW
FB
EN
地
L1
6.8
µ
H
D1
R1
1.8 m
R2
205 k
C
FF
4.7 pf
C2
4.7
µ
F
V
O
=
12 v/35 毫安
V
在
3.3 v
C1
10
µ
F
l1: murata lqh4c6r8m04
d1: motorola mbr0530
c1: Tayo yuden jmk212bj106mg
c2: Tayo yuden emk316bj475ml
TPS61040
V
在
SW
FB
EN
地
3.3
µ
H
D1
C2
4.7
µ
F
5 v/45 毫安
1.8 v 至 4 v
C1
4.7
µ
F
TPS61040
l1: murata lqh4c3r3m04
d1: motorola mbr0530
c1, c2: Tayo yuden jmk212by475mg
C
FF
3.3 pf
R1
620 k
R2
200 k
TPS61040
TPS61041
SLVS413B–OCTOBER2002–REVISEDMAY2004
figure19.positiveandnegativeoutputlcdbiassupply
figure20.standard3.3-vto12-vsupply
figure21.dualbatterycellto5v/50maconversion
efficiencyaprox.equals84%atvin=2.4vtovo=5v/45ma
15
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