參數(shù)資料
型號: LTC1871IMS-1#TR
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO10
封裝: PLASTIC, MSOP-10
文件頁數(shù): 15/36頁
文件大?。?/td> 523K
代理商: LTC1871IMS-1#TR
LTC1871-1
22
18711fb
APPLICATIONS INFORMATION
Figure 14. LTC1871-1 Boost Converter Suggested Layout
Figure 15. LTC1871-1 Boost Converter Layout Diagram
LTC1871-1
M1
VIN
18711 F14
VOUT
SWITCH NODE IS ALSO
THE HEAT SPREADER
FOR L1, M1, D1
L1
RT
RC
CC
R3
J1
CIN
COUT
CVCC
R1
R2
PSEUDO-KELVIN
SIGNAL GROUND
CONNECTION
TRUE REMOTE
OUTPUT SENSING
VIAS TO GROUND
PLANE
R4
PIN 1
COUT
BULK C
LOW ESR CERAMIC
JUMPER
D1
RUN
ITH
FB
FREQ
MODE/
SYNC
SENSE
VIN
INTVCC
GATE
GND
LTC1871-1
+
R4
J1
10
9
8
7
6
1
2
3
4
5
CVCC
PSEUDO-KELVIN
GROUND CONNECTION
CIN
M1
D1
L1
VIN
GND
18711 F15
VOUT
SWITCH
NODE
COUT
RC
R1
RT
BOLD LINES INDICATE HIGH CURRENT PATHS
R2
CC
R3
+
PC Board Layout Checklist
1. In order to minimize switching noise and improve output
load regulation, the GND pin of the LTC1871-1 should
be connected directly to 1) the negative terminal of the
INTVCC decoupling capacitor, 2) the negative terminal
of the output decoupling capacitors, 3) the source of
the power MOSFET or the bottom terminal of the sense
resistor, 4) the negative terminal of the input capacitor
and 5) at least one via to the ground plane immediately
adjacent to Pin 6. The ground trace on the top layer of
the PC board should be as wide and short as possible
to minimize series resistance and inductance.
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