Datasheet

LT3489
8
3489f
LOAD CURRENT (A)
0
EFFICIENCY (%)
75
80
85
1.1
3489 TA09
65
50
0.2 0.30.1 0.4
0.60.5
0.80.7 1.00.9
90
70
60
55
V
IN
= 3.3V
V
IN
= 5V
V
IN
V
IN
3.3V TO 5V
SW
FB
3
8
7
14
2
65
LT3489
L1
2.2µH
D1
R2
5.23k
R1
28.7k
R
C
35.7k
3489 TA02
C2
20µF
C1
4.7µF
C
C
330pF
C
SS
100nF
V
OUT
650mA, V
IN
= 3.3V
1.1A, V
IN
= 5V
V
C
GND
SHDN
SS
COMP
C1: AVX 08056D475KAT
C2: 2 × 10µF, TAIYO YUDEN LMK3168BJ106ML
D1: DIODES INC. DFLS220L
L1: COOPER BUSSMANN SD25-2R2
*EXPOSED PAD MUST ALSO BE GROUNDED
+
OFF ON
TYPICAL APPLICATIO S
U
8V Output Boost Converter
Effi ciency Transient Response
V
OUT
100mV/DIV
AC COUPLED
I
L1
1A/DIV
400mA
I
OUT
200mA
50µs/DIVV
IN
= 3.3V
3489 G10