Datasheet

14
LT1619
1619fa
APPLICATIO S I FOR ATIO
WUUU
S/S
FB
V
C
GND
8
7
6
5
1
2
3
4
V
IN
DRV
GATE
SENSE
LT1619
+
R
C
75k
C
Z
15nF
C
IN1
: SANYO POSCAP 6TPB150M ×2
C
OUT1
: SANYO POSCAP 10TPB220M ×4
D1: MOTOROLA MBRB1545CT
L1: SUMIDA CEPH149-1R0
R
SENSE
: PANASONIC 0.002Ω 1W
C
IN2
1µF
CERAMIC
C
IN1
300µF
+
C
OUT1
220µF
×4
L1
1µH
V
IN
3.3V
D1
M1
FDS6680A
×2
C
DRV
0.1µF
CERAMIC
C
P
150pF
R
SENSE
C
OUT2
10µF
CERAMIC
R1
37400Ω
5V
8A
1619 F15a
R2
12400Ω
Figure 15a. 3.3V to 5V/8A Boost Converter
LOAD CURRENT (A)
0.01
83
EFFICIENCY (%)
87
88
89
0.1 1 10
1619 F15b
86
85
84
V
IN
= 3.3V
Figure 15b. Efficiency of the 5V/8A Boost Converter