Datasheet

12
LTC1693
TYPICAL APPLICATIONS
U
I
TH
SGND PGND
LBO
SHDN
LBI
BDRV
TDRV
C
T
7121510
V
IN
C9
0.015µF
C8
1500pF
C10
220pF
C7
390pF
C5
0.1µF
C6
10µF
16V
R7
1k
R8
30.1k
BINH
PINV
PWR V
IN
1
9
C4
1000pF
8
16
13
11
14
2
V
IN
–5V
V
OUT
3.3V
6A
3
4
5
6
SENSE
–
U1
LTC1266
SENSE
–
V
FB
R6
10Ω
R5
2.2Ω
R4
2.2Ω
R1
0.015Ω
1W
V
S
R3
100Ω
R11
100k
Q5
2N3906
PANASONIC ETQPAF4R8HA
COILCRAFT DO3316P-102
3.3V
V
S
1693 TA03
R17
6.81k
Q4
2N3906
*
**
Q3
2N7002
R10
100k
R15
1.2k
C16
10µF
16V
R14
51Ω
C15
0.1µF
U2A
LTC1693-2
Q2
Si4420
×2
Q1
Si4420
×2
17
8
2
U2B
LTC1693-2
35
6
4
Q6
2N3904
R19
1k
R13
1.30k
R12
4.75k
R9
13k
R16
3.6k
D5
MBRO530
D3
MBRO530
D1
MBRS130
C17
100pF
R18
6.81k
+
C1
330µF
6.3V
×5
+
C2
330µF
6.3V
×5
+
D2
MBRO530
D4
MBRO530
+
C14
10µF
16V
+
C12
4700pF
C11
4700pF
L1*
4.8µH
C13
0.1µF
L2**
1µH
R2
0.015Ω
1W
C3
330µF
6.3V
× 2
+
Negative-to-Positive Synchronous Boost Converter