V
IN
SW
FB
EN
GND
L1
6.8
µ
H
D1
R1
1.5 M
W
R2
210 k
W
C
FF
22 pF
C2
1
µ
F
V1 = 10 V/15 mA
V
IN
= 2.7 V to 5 V
C1
4.7
µ
F
C4
4.7
µ
F
C3
1
µ
F
V2 = –10 V/15 mA
D2
D3
L1:
Murata LQH4C6R8M04
D1, D2, D3: Motorola MBR0530
C1:
Tayo Yuden JMK212BY475MG
C2, C3, C4: Tayo Yuden EMK316BJ105KF
TPS61040
V
IN
SW
FB
EN
GND
L1
6.8
µ
H
D1
R1
1.8 M
W
R2
205 k
W
C
FF
4.7 pF
C2
4.7
µ
F
V
O =
12 V/35 mA
V
IN
3.3 V
C1
10
µ
F
L1:
Murata LQH4C6R8M04
D1:
Motorola MBR0530
C1:
Tayo Yuden JMK212BJ106MG
C2:
Tayo Yuden EMK316BJ475ML
TPS61040
V
IN
SW
FB
EN
GND
3.3
µ
H
D1
C2
4.7
µ
F
5 V/45 mA
1.8 V to 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
W
R2
200 k
W
TPS61040
TPS61041
www.ti.com
SLVS413F – OCTOBER 2002 – REVISED DECEMBER 2010
Figure 19. Positive and Negative Output LCD Bias Supply
Figure 20. Standard 3.3-V to 12-V Supply
Figure 21. Dual Battery Cell to 5-V/50-mA Conversion
Efficiency Approx. Equals 84% at V
IN
= 2.4 V to Vo = 5 V/45 mA
Copyright © 2002–2010, Texas Instruments Incorporated
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