LTC1871IMS-1#TRPBF Linear Technology, LTC1871IMS-1#TRPBF Datasheet - Page 22

• Manufacturer Part Number: LTC1871IMS-1#TRPBF
• Description: IC CONTRLR CURRENT MODE 10-MSOP
• Manufacturer: Linear Technology
• Type: Step-Up (Boost), Flyback, Sepicr

Specifications of LTC1871IMS-1#TRPBF

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.23 ~ 72 V
• Current - Output: 50mA
• Frequency - Switching: 50kHz ~ 1MHz
• Voltage - Input: 2.5 ~ 36 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

LTC1871-1
APPLICATIONS INFORMATION
PC Board Layout Checklist
1. In order to minimize switching noise and improve output
22
load regulation, the GND pin of the LTC1871-1 should
be connected directly to 1) the negative terminal of the
INTV
of the output decoupling capacitors, 3) the source of
CC
decoupling capacitor, 2) the negative terminal
R2
OUTPUT SENSING
SIGNAL GROUND
VIAS TO GROUND
PLANE
PSEUDO-KELVIN
R
R
TRUE REMOTE
C
T
R1
CONNECTION
C
C
BOLD LINES INDICATE HIGH CURRENT PATHS
R3
R2
PIN 1
LTC1871-1
R1
R
C
C
T
Figure 14. LTC1871-1 Boost Converter Suggested Layout
R4
Figure 15. LTC1871-1 Boost Converter Layout Diagram
R
R3
C
C
OUT
C
JUMPER
1
2
3
4
5
VCC
GROUND CONNECTION
J1
RUN
I
FB
FREQ
MODE/
SYNC
LTC1871-1
BULK C
TH
R4
PSEUDO-KELVIN
C
C
OUT
IN
INTV
SENSE
GATE
GND
V
LOW ESR CERAMIC
CC
IN
10
9
8
7
6
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.
J1
C
VCC
M1
D1
+
L1
+
C
C
IN
OUT
L1
M1
SWITCH
18711 F14
NODE
18711 F15
D1
V
V
IN
OUT
V
SWITCH NODE IS ALSO
THE HEAT SPREADER
FOR L1, M1, D1
GND
V
IN
OUT
18711fb