LT8697
Typical applicaTions
2.2MHz, 5.05V Step-Down Converter with Negative Output Resistance
V
IN
C
BST
3 METERS AWG 20
0.1µF
C
4.7µF
IN
TWISTED PAIR CABLE
V
IN
BST
L
R
SENSE
2.7µH
0.018Ω
0.1Ω
EN/UV
SW
PG
SYS
LT8697
C
R
OUT
CDC
INTV
47µF
1nV
CC
C
VCC
×2
+
ICTRL
SYNC
TR/SS
RT
ISP
ISN
1µF
V
LOAD
R
CDC2
R
CDC1
5.05V
9.09k
1k
2.4A
USB5V
RCBL
C
SS
–
R
5VO5
10nF
100k
R
CBL
R
T
GND
PGND
15.4k
14.7k
0.1Ω
8697 TA07a
f
= 2.2MHz FOR
= 8V TO 27V
SW
IN
V
C
C
C
C
: X7R OR X5R
L: COILCRAFT XAL7030-272
BST
IN
: X7R OR X5R
V
V
= 42V
IN(MAX)
IN(MIN)
: 1210 CASE SIZE, X7R OR X5R
OUT
: X7R OR X5R
VCC
= 5.8V AT 1A I
LOAD
6.5V AT 2.4A I
LOAD
Output Voltage vs Load Current
5.8
5.6
5.4
5.2
V
OUT
V
LOAD
5.0
0
0.5
1.0
1.5
(A)
2.0
2.5
3.0
I
LOAD
8697 TA07b
8697p
26
For more information www.linear.com/LT8697
LINEAR_DIMENSIONS [ Linear Dimensions ]
