TPS61020, TPS61024, TPS61025
TPS61026, TPS61027, TPS61028
TPS61029
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SLVS451D–SEPTEMBER 2003–REVISED FEBRUARY 2006
V
10 V
CC2
C5
Unregulated
Auxiliary Output
DS1
C6
1 µF
0.1 µF
L1
V
5 V
SW
CC1
VOUT
6.8 µH
Boost Main Output
C2
2.2 µF
C3
47 µF
VBAT
EN
Battery
Input
R1
C1
10 µF
R5
FB
LBI
R2
PS
LBO
LBO
GND
PGND
List of Components:
U1 = TPS61027DRC1
TPS61027
L1 = EPCOS B82462-G4682
C3, C5, C6, = X7R,X5R Ceramic
C3 = Low ESR Tantalum
DS1 = BAT54S
Figure 27. Power Supply Solution With Auxiliary Positive Output Voltage
V
-5 V
CC2
C5
Unregulated
Auxiliary Output
DS1
C6
1 µF
0.1 µF
L1
V
5 V
SW
CC1
VOUT
6.8 µH
Boost Main Output
C2
2.2 µF
C3
47 µF
VBAT
EN
Battery
Input
R1
C1
10 µF
R5
FB
LBI
R2
PS
LBO
LBO
GND
PGND
TPS61027
List of Components:
U1 = TPS61027DRC
L1 = EPCOS B82462-G4682
C1, C2, C5, C6 = X7R,X5R Ceramic
C3 = Low ESR Tantalum
DS1 = BAT54S
Figure 28. Power Supply Solution With Auxiliary Negative Output Voltage
20
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