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LTC3787IGN#PBF
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
P34-P36
L
TC3787
31
3787fc
Figure 14. High Efficiency 2-Phase 24V Boost Converter with Inductor DCR Current Sensing
TYPICAL APPLICATIONS
MBOT2
MTOP2
SENSE1
+
SENSE1
–
SENSE2
–
SENSE2
+
VFB
ITH
SGND
EXT
V
CC
RUN
FREQ
SS
PLLIN/MODE
PGOOD
TG1
SW1
BOOST1
BG1
VBIAS
INT
V
CC
PGND
BG2
TG2
BOOST2
SW2
C
B1
, 0.1
µF
C
OUT
A1
6.8µF
s
4
R
S2
26.1k
1%
C
B2
, 0.1
µF
C
INT
4.7µF
R
S
232k
1%
L
TC3787
L2
10.2µH
L1
10.2µH
MTOP1
MBOT1
100k
3787 F14
INT
V
CC
INT
V
CC
C
SS
, 0.1
µF
R
A
12.1k, 1%
C
ITHA
, 220pF
R
ITH
, 8.87k, 1%
C
ITH
, 15nF
D1
D3
D2
R
FREQ
, 41.2k
R
S1
, 53.6, 1%
ILIM
PHASMD
CLKOUT
+
C
OUTB1
220µF
C2
0.1
µF
C
OUT
A2
6.8µF
s
4
+
C
OUTB2
220µF
C
INA
22µF
s
4
V
IN
5V TO 24V
V
OUT
24V
, 8A
C4
0.1
µF
C3
0.1
µF
C1
0.1
µF
+
C
INB
220µF
C
OUT
A1
, C
OUT
A2
: C4532x7R1H685K
C
OUTB1
, C
OUTB2
: SANYO 63CE220KX
C
INA
: TDK C4532X5R1E226M
C
INB
: SANYO 50CE220AX
L1, L2: PULSE P
A2050.103NL
MBOT1, MBOT2, MTOP1, MTOP2: RENESAS RJK0305
D1, D2: BAS140W
D3, D4: DIODES INC. B340B
D4
R
S4
26.1k
1%
R
S3
, 53.6k, 1%
L
TC3787
32
3787fc
Figure 15. 4-Phase Single Output Boost Converter
TYPICAL APPLICATIONS
MBOT2
MTOP2
SENSE2
+
SENSE2
–
SENSE1
–
SENSE1
+
VFB
ITH
SGND
EXT
V
CC
INT
V
CC
RUN
FREQ
SS
PLLIN/MODE
PGOOD
TG1
SW1
BOOST1
BG1
VBIAS
INT
V
CC
PGND
BG2
TG2
BOOST2
SW2
C
B1
, 0.1
µF
C
OUT
A1
22µF
s
4
C
B2
, 0.1
µF
C
INT1
4.7µF
R
B
232k
L
TC3787
L2
3.3µH
L1
3.3µH
MTOP1
MBOT1
100k
INT
V
CC
R
SENSE1
4m
C
SS
, 0.1
µF
R
A
, 12.1k
C
ITHA
, 220pF
R
ITH
, 8.66k
C
ITH
, 15nF
R
SENSE2
4m
D1
D2
ILIM
PHASMD
CLKOUT
+
C
OUTB1
220µF
V
OUT
24V
, 20A*
V
IN
5V to 24V
C
OUT
A2
22µF
s
4
+
C
OUTB2
220µF
C
INA
22µF
s
4
+
C
INB
220µF
MBOT4
MTOP4
SENSE2
+
SENSE2
–
SENSE1
–
SENSE1
+
VFB
ITH
SGND
EXT
V
CC
RUN
FREQ
SS
PLLIN/MODE
PGOOD
TG1
SW1
BOOST1
BG1
VBIAS
INT
V
CC
PGND
BG2
TG2
BOOST2
SW2
C
B3
, 0.1
µF
C
OUT
A3
22µF
s
4
C
B4
, 0.1
µF
C
INT2
4.7µF
L
TC3787
L4
3.3µH
L3
3.3µH
MTOP3
MBOT3
100k
INT
V
CC
R
SENSE3
4m
R
SENSE4
4m
D3
D4
ILIM
PHASMD
CLKOUT
+
C
OUTB3
220µF
C
OUT
A4
22µF
s
4
+
C
OUTB4
220µF
3787 F15
C
INA
, C
OUT
A1
, C
OUT
A2
, C
OUT
A3
, C
OUT
A4
: TDK C4532X5R1E226M
C
INB
, C
OUTB1
, C
OUTB2
, C
OUTB3
, C
OUTB4
: SANYO, 50CE220LX
L1, L2, L3, L4: PULSE P
A1494.362NL
MBOT1, MBOT2, MBOT3, MBOT4, MTOP1, MTOP2, MTOP3, MTOP4: RENESAS HA
T2169H
D1, D2, D3, D4: BAS140W
*WHEN V
IN
< 8V
, MAXIMUM LOAD CURRENT A
VAILABLE IS REDUCED.
L
TC3787
33
3787fc
PACKAGE DESCRIPTION
Please refer to
http://ww
w
.linear
.com/designtools/packaging/
for the most recent package drawings.
.386 – .393*
(9.804 – 9.982)
GN28 REV B 0212
12
3
4
5
6
7
8
9
10
11
12
.229 – .244
(5.817 – 6.198)
.150 – .157**
(3.810 – 3.988)
20
21
22
23
24
25
26
27
28
19
18
17
13
14
16
15
.016 – .050
(0.406 – 1.270)
.015 ±.004
(0.38 ±0.10)
w
45°
0° – 8° TYP
.0075 – .0098
(0.19 – 0.25)
.0532 – .0688
(1.35 – 1.75)
.008 – .012
(0.203 – 0.305)
TYP
.004 – .0098
(0.102 – 0.249)
.0250
(0.635)
BSC
.033
(0.838)
REF
.254 MIN
RECOMMENDED SOLDER PAD LAYOUT
.150 – .165
.0250 BSC
.0165 ±.0015
.045 ±.005
*
DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**
DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
INCHES
(MILLIMETERS)
NOTE:
1. CONTROLLING DIMENSION: INCHES
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
4. PIN 1 CAN BE BEVEL EDGE OR A DIMPLE
GN Package
28-Lead Plastic SSOP (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1641 Rev B)
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
P34-P36
LTC3787IGN#PBF
Mfr. #:
Buy LTC3787IGN#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators PolyPhSync Boost Cntr
Lifecycle:
New from this manufacturer.
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