Datasheet

11
LT1961
1961fa
Figure 6. Typical Application and Suggested Layout (Topside Only Shown)
LT1961
V
IN
OUTPUT
12V
0.5A*
INPUT
5V
C2
6800pF
C4
100pF
R3
6.8k
R2
10k
1%
R1
90.9k
D1
UPS120
C1
10μF
CERAMIC
C3
2.2μF
CERAMIC
V
SW
FBSHDN
OPEN
OR
HIGH
= ON
GND
V
C SYNC
*MAXIMUM OUTPUT CURRENT IS SUBJECT TO THERMAL DERATING.
L1
6.8μH
V
OUT
INPUT
GND
C3
C1
R2 R1
L1
D1
KELVIN SENSE
V
OUT
MINIMIZE
LT1961,
C1, D1 LOOP
KEEP FB AND V
C
COMPONENTS
AWAY FROM
HIGH FREQUENCY,
HIGH INPUT
COMPONENTS
PLACE FEEDTHROUGHS
AROUND GROUND PIN FOR
GOOD THERMAL CONDUCTIVITY
LT1961EMS8E
GND
C4
U1
SOLDER EXPOSED
GROUND PAD
TO BOARD
R3
C2
APPLICATIONS INFORMATION
WUU
U