LTC3718EG 데이터 시트보기 (PDF) - Linear Technology
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LTC3718EG Datasheet PDF : 20 Pages
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LTC3718
W
FU CTIO AL DIAGRA S
RON
VON
2
7 ION
0.7V
2.4V
tON
=
VVON
IION
(10pF)
R
SQ
20k
+
ICMP
IREV
–
1.4V
VRNG
4
×
0.7V
5.7µA
VIN
16 VIN1
+
CIN
0.8V
REF
5V
REG
ON
SWITCH
LOGIC
SHDN
OV
BOOST
24
TG
23
SW1
22
SENSE+
21
INTVCC
17
BG
18
PGND1
19
SENSE–
20
PGOOD
3
CB
M1
L1
DB
CVCC
+
M2
COUT
VOUT
1
240k
Q2
ITHB
Q1
EA
R2
80k
VREF 9
R1
40k
Q5
SS
–+
0.6V
5 ITH RC CC1
3/10VREF
UV
RUN
SHDN
OV
11/30VREF
1.2µA
6V
0.6V
1 RUN/SS CSS
R3
20k
R4
40k
VFB1
8
SGND1
6
3718 FD01
8
VIN2 15
R5
40k
VOUT2
R7
(EXTERNAL)
VFB2
Q1
FB2 12
R8
(EXTERNAL)
11 SGND2
R6
40k
+
A1
gm
–
Q2
x10
R9
30k
R10
140k
– COMPARATOR
A2
RC2
RAMP
GENERATOR
Σ
+
CC2
FF
R
Q
S
1.4MHz
OSCILLATOR
SHDN
10
SHUTDOWN
13 SW2
DRIVER
Q3
0.15Ω
14 PGND2
3718 FD02
3718fa
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