ltc1778-1 Linear Technology Corporation, ltc1778-1 Datasheet - Page 22

• Manufacturer Part Number: ltc1778-1
• Description: Wide Operating Range, No Rsense Step-down Controller
• Manufacturer: Linear Technology Corporation

LTC1778/LTC1778-1
22
TYPICAL APPLICATIO S
C
C
C
L1: PANASONIC ETQPAF2R7H
IN1
IN2
OUT
: TAIYO YUDEN TMK432BJ106MM
: SANYO 35CV10GX
: PANASONIC EEFUD0J101R
4700pF
52.3k
10k
C
R1
C1
R2
10k
0.1µF
R
C
C
100pF
SS
C
C2
698k
R
ON
1
2
3
4
5
6
7
8
RUN/SS
V
V
FCB
I
SGND
I
V
TH
ON
ON
RNG
FB
LTC1778-1
U
Positive-to-Negative Converter, –5V/5A at 300kHz
EXTV
INTV
BOOST
PGND
SW
V
TG
BG
CC
CC
IN
16
15
14
13
12
11
10
9
C
0.22µF
CMDSH-3
B
C
4.7µF
C
0.1µF
1Ω
RF
VCC
F
D
B
M1
IRF7811A
M2
IRF7822
L1 2.7µH
D1
B340A
1778 TA06
+
C
10µF
25V
×2
C
100µF
6V
×3
IN1
OUT
20V
10V
V
5V
IN
C
10µF
35V
IN2
I
6.7A
OUT
8A
5A
V
5V TO 20V
V
–5V
IN
OUT
1778fb