Datasheet

LT3489
9
3489f
V
IN
V
IN
3.3V TO 5V
SW
FB
LT3489
L1
3.3µH
D1
C
SS
100nF
C
C
680pF
R
C
16.5k
V
OUT
12V
625mA, V
IN
= 5V
410mA, V
IN
= 3.3V
3489 TA03
C2
10µF
C1
4.7µF
V
C
GNDCOMPSS
SHDN
3
65
478
21
C1: Taiyo Yuden JMK212BJ475MG, 4.7µF, 6.3V
C2: Taiyo Yuden GMK316BJ106ML, 10µF, 35V
D1: Diodes, Inc. DFLS220
L1: Toko A916CY-3R3M (Type D63CB)
R1
84.5k
R2
9.76k
OFF ON
12V Output Boost Converter
TYPICAL APPLICATIO S
U
Effi ciency Transient Response
LOAD CURRENT (A)
0
40
EFFICIENCY (%)
45
55
60
65
90
75
0.2
0.4
0.5
3489 TA05
50
80
85
70
0.1
0.3
0.6
0.7
V
IN
= 3.3V
V
IN
= 5V
V
OUT
500mV/DIV
AC COUPLED
I
L1
1A/DIV
300mA
I
OUT
100mA
50µs/DIVV
IN
= 3.3V
3489 TA06