參數(shù)資料
型號: LTC3830ES8
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 16-Bit Bus Transceiver With 3-State Outputs 48-TSSOP -40 to 85
中文描述: SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8
封裝: 0.150 INCH, PLASTIC, SO-8
文件頁數(shù): 19/24頁
文件大?。?/td> 305K
代理商: LTC3830ES8
19
LTC3830/LTC3830-1
sn3830 3830fs
3. The small-signal resistors and capacitors for frequency
compensation and soft-start should be located very close
to their respective pins and the ground ends connected to
the signal ground pin through a separate trace. Do not
connect these parts to the ground plane!
4. The V
CC
, PV
CC1
and PV
CC2
decoupling capacitors should
be as close to the LTC3830 as possible. The 4.7
μ
F and 1
μ
F
bypass capacitors shown at V
CC
, PV
CC1
and PV
CC2
will help
provide optimum regulation performance.
5. The (+) plate of C
IN
should be connected as close as
possible to the drain of the upper MOSFET, Q1. An addi-
tional 1
μ
F ceramic capacitor between V
IN
and power ground
is recommended.
6. The SENSE and V
FB
pins are very sensitive to pickup from
the switching node. Care should be taken to isolate SENSE
and V
FB
from possible capacitive coupling to the inductor
switching signal. Connecting the SENSE
+
and SENSE
close
to the load can significantly improve load regulation.
7. Kelvin sense I
MAX
and I
FB
at Q1’s drain and source pins.
PV
CC1
G1
I
MAX
I
FB
SENSE
+
G2
FB
SENSE
FREQSET
SHDN
COMP
SS
V
CC
LTC3830
PV
CC2
GND
PGND
+
+
1
μ
F
GND
GND
NC
100
1k
V
IN
Q1A
Q2
PGND
Q1B
C
IN
+
C
OUT
3830 F11
V
OUT
L
O
C
SS
C1
C
C
4.7
μ
F
NC
R
C
1
μ
F
0.1
μ
F
PGND
PV
CC
Figure 11. Typical Schematic Showing Layout Considerations
APPLICATIOU
W
U
U
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