參數資料
型號： TPS62000SHKK
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 1.6 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, CDFP10
封裝： CERAMIC, DFP-10
文件頁數： 15/23頁
文件大小： 531K
代理商： TPS62000SHKK
APPLICATION INFORMATION
(1)
ADJ USTABLE OUTPUT VOLTAGE VERSION
When the adjustable output voltage version (TPS62000DGS) is used, the output voltage is set by the external
resistor divider (see
Figure 15
).
O
R1
V
= 0.45 V
1 +
R2
÷
′
è
(1)
47
2
(ff)
o
1
C
=
for C
F
30000 R1
1
000 R1
′
m
p
<
′
′
(2)
47
2
5
(ff)
o
C
=
for C
F
m
p
3
′
(3)
V
IN
L1 = 10
m
H
EN
SYNC
GND
FC
PGND
FB
L
TPS62000
+
C
o
= 10
m
F
V
O
= 2.5 V/300 mA
C3 = 0.1
m
F
C
i
= 10
m
F
V
I
= 2.7 V to 5.5 V
R1 = 820 k
C
(ff)
=
6.8 pF
R2 = 180 k
+
INDUCTOR SELECTION
A 10-
μ
H minimum output inductor is used with the TPS62000. Values larger than 22
μ
H or smaller than 10
μ
H
may cause stability problems because of the internal compensation of the regulator.
For output voltages greater than 1.8 V, a 22-
μ
H inductance might be used in order to improve the efficiency of
the converter.
After choosing the inductor value of typically 10
μ
H, two additional inductor parameters should be considered:
first the current rating of the inductor and second the dc resistance.
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