LT3757MPMSE#PBF Linear Technology, LT3757MPMSE#PBF Datasheet - Page 8

• Manufacturer Part Number: LT3757MPMSE#PBF
• Description: IC DC-DC CTRLR ADJ 10MSOP
• Manufacturer: Linear Technology
• Type: Step-Up (Boost), Inverting, Flyback, Sepicr

Specifications of LT3757MPMSE#PBF

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Frequency - Switching: 100kHz ~ 1MHz
• Voltage - Input: 2.9 ~ 40 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP Exposed Pad, 10-HMSOP, 10-eMSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Voltage - Output: -
• Power - Output: -

LT3757
block DiagraM

C
C1
C
FBX
C2
R
C
1
2
VC
FBX
–0.88V
1.72V
–0.8V
1.6V
–
+
–
+
FREQUENCY
FOLDBACK
2.5V
A11
A12
+
–
+
–
A1
A2
I
S3
G6
Figure 1. LT3757 Block Diagram Working as a SEPIC Converter
2.5V
3
2µA
I
SS
S1
1.25V
C
Q3
I
10µA
FREQ
FOLDBACK
SS
S2
Q2
–
+
A3
G4
UVLO
REGULATOR
5
VC
PWM
COMPARATOR
AND UVLO
1.25V
INTERNAL
SYNC
V
IN
–
+
A7
+
+
–
165˚C
G3
TSD
A10
G1
A4
R4
–
+
FREQ
PROG
SLOPE
RAMP
100kHz-1MHz
9
OSCILLATOR
GENERATOR
G5
1.22V
A8
A9
SHDN/UVLO
R3
RAMP
+
–
+
–
4
Q1
RT
17.5V
R
V
T
2.7V UP
2.6V DOWN
ISENSE
+
R
CURRENT
7.2V LDO
LIMIT
SR1
S
C
IN
O
DRIVER
A5
A6
–
+
+
–
G2
10
108mV
V
IN
INTV
SENSE
GATE
GND
3757 F01
CC
L1
11
8
7
6
C
VCC
C
M1
R
L2
DC
SENSE
•
D1
FBX
R2
R1
+
C
OUT2
C
OUT1
V
3757fb
OUT