TPS61040
TPS61041
www.ti.com
SLVS413C–OCTOBER 2002–REVISED AUGUST 2007
D3
V2 = -10 V/15 mA
D2
C4
4.7 µF
C3
1 µF
L1
D1
6.8 µH
V1 = 10 V/15 mA
TPS61040
C
FF
22 pF
R1
1.5 MW
V
SW
FB
IN
V
IN
= 2.7 V to 5 V
C2
1 µF
C1
4.7 µF
L1:
Murata LQH4C6R8M04
D1, D2, D3: Motorola MBR0530
EN
GND
R2
C1:
Tayo Yuden JMK212BY475MG
210 kW
C2, C3, C4: Tayo Yuden EMK316BJ105KF
Figure 19. Positive and Negative Output LCD Bias Supply
L1
6.8 µH
D1
V
O =
12 V/35 mA
TPS61040
C
4.7 pF
FF
R1
1.8 MW
V
IN
3.3 V
V
IN
SW
FB
C2
4.7 µF
C1
10 µF
L1:
Murata LQH4C6R8M04
Motorola MBR0530
Tayo Yuden JMK212BJ106MG
Tayo Yuden EMK316BJ475ML
EN
GND
R2
205 kW
D1:
C1:
C2:
Figure 20. Standard 3.3-V to 12-V Supply
D1
3.3 µH
TPS61040
5 V/45 mA
C
FF
3.3 pF
R1
620 kW
V
1.8 V to 4 V
SW
FB
IN
C2
4.7 µF
C1
4.7 µF
R2
200 kW
EN
GND
L1:
D1:
Murata LQH4C3R3M04
Motorola MBR0530
C1, C2: Tayo Yuden JMK212BY475MG
Figure 21. Dual Battery Cell to 5-V/50-mA Conversion
Efficiency Approx. Equals 84% at VIN = 2.4 V to Vo = 5 V/45 mA
Copyright © 2002–2007, Texas Instruments Incorporated
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