Datasheet

LT3460/LT3460-1
7
3460fb
OPERATION
Layout Hints
The high speed operation of the LT3460/LT3460-1 demands
careful attention to board layout. You will not get adver-
tised performance with careless layout. Figure 5 shows
the recommended component placement.
Figure 5
TYPICAL APPLICATIONS
R1
R2
GND
C
F
C2
L1
D1 C1
V
OUT
V
IN
SHUTDOWN
+
+
3460 F05a
(SOT-23 PACKAGE)
R1
R2
GND
C
F
C2
L1
D1 C1
V
OUT
V
IN
SHUTDOWN
3460 F05b
+
+
(SC70 PACKAGE)
3460 F05c
(6-LEAD 2mm × 2mm DFN PACKAGE)
4
5
7
6
3
2
1
D1
L1
C
O
C
IN
R1
R2
C
F
V
IN
GND
SHDN
V
OUT
5V to 12V Step-Up Converter Effi ciency
SHDN
V
IN
5V
L1
22μH
D1
130k
15k
C2
1μF
22pF
C1
4.7μF
V
OUT
12V
70mA
51
3
2
4
C1: TAIYO YUDEN X5R JMK212BJ475
C2: TAIYO YUDEN X5R EMK212BJ105
D1: CENTRAL SEMICONDUCTOR CMDSH2-3
L1: MURATA LQH32CN-220 OR EQUIVALENT
3460 TA01
V
IN
SW
FB
SHDN
GND
LT3460
LOAD CURRENT (mA)
0
EFFICIENCY (%)
90
85
80
75
70
65
60
20 40 60 80
3460 TA01a