LT8697
Typical applicaTions
5V Step-Down Converter with Cable Drop Compensation for
Copper Cabling Over Wide ꢂemperature Range
V
IN
C
BST
4 METERS AWG20
C
IN
0.1µF
L
V
TWISTED PAIR CABLE
10µF
OUT
V
BST
IN
R
SENSE
10µH
0.02Ω
0.13Ω
EN/UV
SW
+
C
CDC
PG
SYS
V
5V
2.1A
LT8697
1nF
LOAD
C
OUT
INTV
CC
100µF
R
10k
CDC
C
VCC
ICTRL
SYNC
TR/SS
RT
ISP
ISN
1µF
–
0.13Ω
USB5V
RCBL
8697 TA02
C
10nF
SS
R
10k
CBL1
R
R
NTC
10k
R
CBL2
T
GND
PGND
10k
56.2k
f
= 700kHz FOR
= 7V TO 27V
SW
IN
V
C
C
C
C
: X7R OR X5R
L: WÜRTH 74437368100
IN
: 1210 CASE SIZE, X7R OR X5R
: X7R OR X5R
RNTC: MURATA NCP21XV103J03RA
OUT
VCC
V
V
= 42V
IN(MAX)
IN(MIN)
: X7R OR X5R
= 5.8V AT 1A I
BST
LOAD
6.6V AT 2.1A I
LOAD
ꢂemperature Correction for Cable Drop Compensation
ꢂhrough Copper Cabling
5.8
V
OUT
5.6
5.4
5.2
5.0
4.8
I
= 2.1A
LOAD
CABLE = 4 METERS AWG
20 TWISTED-PAIR COPPER
V
LOAD
50
100
–50
0
150
TEMPERATURE (°C)
8697 TA02b
8697p
24
For more information www.linear.com/LT8697
LINEAR_DIMENSIONS [ Linear Dimensions ]
