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APPLICATIONINFORMATION
同步
地
PGND
SW
R1
220 k
R2
390 k
V
O
= 1.8 v
6.8 H
C = 2 x 22 F
6.3 v
O
VIN
LBI
C = 10 F
25 v
I
1 F
2
3
4
8
9
7
5
11
12
16
10
6
13
14
15
1
V = 3.5 v 至 17 v
I
VIN
EN
VINA
PGND
地
PwPD
R5
R6
AGND
TPS621
10
SW
LBO
PG
R3
1 m
R4
1 m
FB
C
ff
10 pf
2
2
1
R
R
R
F
B
V
O
V
2
2
1
R
F
B
V
O
V
R
R
(7)
同步
地
PGND
SW
V
O
= 5 v
6.8 H
C = 22 F
10 v
O
VIN
LBI
C = 10 F
25 v
I
1 F
2
3
4
8
9
7
5
11
12
16
10
6
13
14
15
1
V = 5.5 v 至 17 v
I
VIN
EN
VINA
PGND
地
PwPD
AGND
TPS62112
SW
LBO
PG
1 m
FB
TPS62110
TPS62111
TPS62112
SLVS585–JULY2005
一个.foranoutputvoltagelowerthan2.5v,anoutputcapacitorof33
µ
Forgreaterisrecommendedtoimproveload
瞬时.
figure20.standardconnectionforadjustableversion
V
FB
=1.153v
table4.recommendedresistors
OUTPUTVOLTAGER1R2NOMINALVOLTAGETYPICALC
ff
9V680k
Ω
100k
Ω
8.993v22pf
5V510k
Ω
150k
Ω
5.073v10pf
3.3v560k
Ω
300k
Ω
3.305v10pf
2.5v390k
Ω
330k
Ω
2.515v10pf
1.8v220k
Ω
390k
Ω
1.803v10pf
1.5v100k
Ω
330k
Ω
1.502v10pf
figure21.standardconnectionforfixedvoltageversion
18
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