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: 25/36页
文件大小: 436K
代理商: LT3757MPMSE#PBF
LT3757
31
3757fc
Typical applicaTions
5.5V to 36V Input, 12V/2A Output SEPIC Converter
Efficiency vs Output Current
Load Step Waveforms
Start-Up Waveforms
Frequency Foldback Waveforms When Output Short-Circuits
SENSE
LT3757
VIN
5.5V TO 36V
CIN
4.7F
50V
×2
CDC
4.7F
50V, X5R,
×2
4.7F
10V
X5R
VOUT
12V
2A
0.008
1W
M1
41.2k
300kHz
GATE
FBX
GND INTVCC
SHDN/UVLO
SYNC
RT
SS
VC
105k
46.4k
0.1F
6.8nF
10k
L1A
L1B
IL1B
D1
CIN, CDC: TAIYO YUDEN UMK316BJ475KL
COUT1: KEMET T495X476K020AS
COUT2: TAIYO YUDEN TMK432BJ106MM
D1: ON SEMI MBRS360T3G
L1A, L1B: COILTRONICS DRQ127-3R3 (*COUPLED INDUCTORS)
M1: VISHAY SILICONIX Si7460DP
3757 TA05a
105k
1%
15.8k
1%
COUT1
47F
20V
×2
COUT2
10F
25V
X5R
+
VSW
IL1A
500s/DIV
VOUT
200mV/DIV
(AC)
1.6A
0.4A
IOUT
1A/DIV
3757 TA05c
2ms/DIV
VOUT
5V/DIV
IL1A + IL1B
5A/DIV
3757 TA05d
VIN = 12V
50s/DIV
VOUT
10V/DIV
VSW
20V/DIV
IL1A + IL1B
5A/DIV
3757 TA05e
VIN = 12V
OUTPUT CURRENT (A)
0.001
20
EFFICIENCY
(%)
30
40
50
60
70
80
90
100
0.01
0.1
1
3757 TA05b
10
VIN = 16V
VIN = 8V
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