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LT3755 Datasheet(PDF) 23 Page - Linear Technology

Part # LT3755
Description  60V 4-Switch Synchronous Buck-Boost Controller
PDF  26 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3755 Datasheet(HTML) 23 Page - Linear Technology

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LT3791-1
23
37911fa
For more information www.linear.com/LT3791-1
98% Efficient 60W (12V 5A) Voltage Regulator Runs Down to 3V VIN
Typical applicaTions
Efficiency vs Load Current
Maximum Output Current vs VIN
37911 TA02b
LOAD CURRENT (A)
0
1
90
95
100
80
70
50
85
75
55
60
65
2
3
4
5
VIN = 3V
VIN = 6V
VIN = 12V
VIN = 28V
VIN = 48V
INPUT VOLTAGE (V)
3
0
1
2
3
4
6
5
7
9
20
37911 TA02c
40
4
6
8
10
30
50 60
5
D4
COUT2
100µF
35V
+
VIN
3V TO 55V
STARTS UP
FROM 5.5V
INTVCC
TG1
BG1
SNSP
SNSN
BST1
BST2
BG2
PGND
SW2
TG2
RT
LT3791-1
SWI
C3
1µF
C7
470nF
IVINP
VIN
IVINN
IVINMON
ISMON
CLKOUT
PWMOUT
TEST1
EN/UVLO
OVLO
VREF
PWM
CTRL
R8
84.5k
300kHz
VC
SYNC
SS
SGND
R1
866k
R2
576k
RFAULT
100k
R3
1M
R4
57.6k
R7
50
RIN
0.003
C8
0.1µF
CSS
33nF
CC
22nF
37911 TA02a
RSENSE
0.004
ISP
ISN
FB
C1
0.1µF
L1, 6.8µH
C2
0.1µF
D2
D1
M2
M1
M3
M4
CVCC
4.7µF
COUT
10µF
25V
×3
CIN
4.7µF
100V
×4
ROUT
0.015
VOUT
12V
5A
VO
R5
73.2k
R6
8.06k
RC
5.1k
D1, D2: NXP BAT46WJ
D3: IRF 10BQ060
D4: IRF 10BQ040
D5, D6: DIODES INC. BAT46W
L1: WURTH ELEKTRONIK WE-HCI 7443556680
M1, M2: RENASAS RJK0651DPB 60VDS
M3, M4: VISHAY SiR424DP 40VDS
COUT2: SUNCON 35HVT100M
D6
VO
D5
D3
SHORT
C/10
CCM
INTVCC
R9
100k
R10
200k



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