LT3757IMSE#PBF Linear Technology, LT3757IMSE#PBF Datasheet - Page 31

• Manufacturer Part Number: LT3757IMSE#PBF
• Description: IC CTRLR DC/DC ADJ 10-MSOP
• Manufacturer: Linear Technology
• Type: Step-Up (Boost), Inverting, Flyback, Sepicr

Specifications of LT3757IMSE#PBF

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Frequency - Switching: 100kHz ~ 1MHz
• Voltage - Input: 2.9 ~ 40 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP Exposed Pad, 10-HMSOP, 10-eMSOP
• Dc To Dc Converter Type: FLYBACK CONTROLLER
• Pin Count: 10
• Input Voltage: 2.9 to 40V
• Output Voltage: 1.6 to 350V
• Package Type: MSOP EP
• Mounting: Surface Mount
• Operating Temperature Classification: Automotive
• Operating Temperature (min): -40C
• Operating Temperature (max): 125C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Voltage - Output: -
• Power - Output: -
• Lead Free Status / Rohs Status: Compliant

Typical applicaTions
I
L1A
5V/DIV
5A/DIV
100
+ I
5.5V TO 36V
V
40
30
20
90
80
70
60
50
OUT
0.001
L1B
V
Efficiency vs Output Current
IN
V
IN
= 12V
V
Start-Up Waveforms
0.01
IN
OUTPUT CURRENT (A)
= 8V
C
C
C
D1: ON SEMI MBRS360T3G
L1A, L1B: COILTRONICS DRQ127-3R3 (*COUPLED INDUCTORS)
M1: VISHAY SILICONIX Si7460DP
IN
OUT1
OUT2
41.2k
300kHz
, C
C
4.7µF
50V
2ms/DIV
IN
2
DC
: KEMET T495X476K020AS
: TAIYO YUDEN TMK432BJ106MM
0.1
: TAIYO YUDEN UMK316BJ475KL
V
IN
= 16V
0.1µF
1
5.5V to 36V Input, 12V/2A Output SEPIC Converter
105k
46.4k
3757 TA05b
3757 TA05d
10
SHDN/UVLO
SYNC
RT
SS
VC
10k
6.8nF
LT3757
V
IN
GND INTV
SENSE
GATE
FBX
CC
4.7µF
10V
X5R
V
L1A
SW
Frequency Foldback Waveforms When Output Short-Circuits
•
1A/DIV
200mV/DIV
M1
0.008
1W
I
OUT
I
I
L1A
L1A
V
10V/DIV
20V/DIV
1.6A
0.4A
(AC)
5A/DIV
OUT
50V, X5R, 2
+ I
V
V
OUT
L1B
SW
4.7µF
C
I
DC
L1B
Load Step Waveforms
•
L1B
D1
500µs/DIV
50µs/DIV
105k
1%
15.8k
1%
+
C
47µF
20V
3757 TA05a
OUT1
2
V
3757 TA05c
IN
= 12V
C
10µF
25V
X5R
3757 TA05e
V
12V
2A
OUT2
OUT
LT3757

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