参数资料
型号: LT3757MPMSE#PBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 稳压器
英文描述: SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO10
封装: 3 X 3 MM, LEAD FREE, PLASTIC, MSOP-10
文件页数: 35/36页
文件大小: 436K
代理商: LT3757MPMSE#PBF
LT3757
8
3757fc
block DiagraM
Figure 1. LT3757 Block Diagram Working as a SEPIC Converter
L1
R1
R3
R4
M1
R2
L2
FBX
1.22V
2.5V
D1
CDC
CIN
VOUT
COUT2
COUT1
CVCC
INTVCC
VIN
RSENSE
VISENSE
+
VIN
IS1
2A
10
8
7
1
9
SHDN/UVLO
INTERNAL
REGULATOR
AND UVLO
TSD
165C
A10
Q3
VC
17.5V
2.7V UP
2.6V DOWN
A8
UVLO
IS2
10A
IS3
CC1
CC2 RC
DRIVER
SLOPE
SENSE
GND
GATE
108mV
SR1
+
+
CURRENT
LIMIT
RAMP
GENERATOR
7.2V LDO
+
+
R
O
S
2.5V
G1
RT
RT
SS
CSS
SYNC
1.25V
FBX
1.6V
–0.8V
+
+
+
2
3
5
4
+
+
6
11
RAMP
PWM
COMPARATOR
FREQUENCY
FOLDBACK
100kHz-1MHz
OSCILLATOR
FREQ
FOLDBACK
FREQ
PROG
3757 F01
+
Q1
A1
A2
1.72V
–0.88V
+
+
A11
A12
A3
A4
A5
A6
G2
G5
G6
A7
A9
Q2
G4
G3
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