V
IN
SW
FB
EN
GND
L1
10
µ
H
D1
R1
2.2 M
W
R2
160 k
W
C
FF
22 pF
C2
1
µ
F
V
OUT
18 V
V
IN
1.8 V to 6 V
C1
4.7
µ
F
L1:
Sumida CR32-100
D1:
Motorola MBR0530
C1:
Tayo Yuden JMK212BY475MG
C2:
Tayo Yuden TMK316BJ105KL
TPS61040
V
IN
SW
FB
EN
GND
L1
10
µ
H
D1
R1
2.2 M
W
R2
160 k
W
C
FF
22 pF
C2
1
µ
F
V
O
18 V
V
IN
1.8 V to 6 V
C1
4.7
µ
F
DAC or Analog Voltage
0 V = 25 V
1.233 V = 18 V
TPS61040
L1:
Sumida CR32-100
D1:
Motorola MBR0530
C1:
Tayo Yuden JMK212BY475MG
C2:
Tayo Yuden GMK316BJ105KL
V
IN
SW
FB
EN
GND
L1
10
µ
H
D1
R1
2.2 M
W
R2
160 k
W
C
FF
22 pF
C2
1
µ
F
V
OUT
18 V / 10 mA
V
IN
1.8 V to 6 V
C1
4.7
µ
F
R3
200 k
W
BC857C
C3
0.1
µ
F
(Optional)
L1:
Sumida CR32-100
D1:
Motorola MBR0530
C1:
Tayo Yuden JMK212BY475MG
C2:
Tayo Yuden TMK316BJ105KL
TPS61040
TPS61040
TPS61041
SLVS413F – OCTOBER 2002 – REVISED DECEMBER 2010
www.ti.com
Figure 16. LCD Bias Supply
Figure 17. LCD Bias Supply With Adjustable Output Voltage
Figure 18. LCD Bias Supply With Load Disconnect
14
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