參數(shù)資料
型號: MAX1965TEEP
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 穩(wěn)壓器
英文描述: Tracking/Sequencing Triple/Quintuple Power-Supply Controllers
中文描述: 0.05 A SWITCHING CONTROLLER, 240 kHz SWITCHING FREQ-MAX, PDSO20
封裝: 0.150 INCH, 0.025 INCH PITCH, QSOP-20
文件頁數(shù): 26/30頁
文件大?。?/td> 475K
代理商: MAX1965TEEP
M
Output Filtering for Analog Circuits
Some applications need to generate analog and power
outputs at the same voltage. By adding an LC filter to
filter the noise present on an analog output (Figure 10),
one output voltage can provide both analog and power
outputs. The LC filter provides approximately
40dB/decade of attenuation. Select the LC corner fre-
quency (1/2
π √
LC
) to provide desired attenuation. For
stable operation, the filter inductor (L
FILTER
) and output
filter capacitor (C
FILTER
) used to generate the filter
must be selected to provide an overdamped response
to output transients:
R
(
R
L
C
DCR
ESR
FILTER
FILTER
+
)
2
4
1
Tracking/Sequencing Triple/Quintuple
Power-Supply Controllers
26
______________________________________________________________________________________
Figure 8. MAX1964 High-Voltage Application Requires Snubber Circuit
BST
C1
1
μ
F
D1
CENTRAL CMPSH-3
C2
1
μ
F
N
H
N
L
1
T1
C
BST
0.1
μ
F
R
POK
100k
C
8.2nF
C
OUT
470
μ
F
C
IN
470
μ
F
DH
LX
V
3.3V AT 1A
INPUT
9V TO 18V
DL
OUT
GND
TO LOGIC
IN
VL
ILIM
POK
COMP
MAX1964
D2
NIHON
EP05Q03L
C
OUT
470
μ
F
FB
R
COMP
200k
R
GATE(NH)
R
300
R
GATE(NL)
R
BE2
220
R3
30k
C3
10
μ
F
Q1
2N3905
V
OUT2
5V AT 100mA
C5
10
μ
F
R4
10k
B2
FB2
B3
FB3
C
BE2
4700pF
FAIRCHILD
FDS6912A
D3
NIHON
EC10QS10
C7
470
μ
F
R
BE3
220
R5
86.6k
C6
10
μ
F
Q2
TIP30
V
12V AT 100mA
C8
10
μ
F
R6
10k
C
SNUB
100pF
C
2200pF
R7
470
POWER GROUND
ANALOG GROUND
C9
10nF
1
T1
2
T1
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