参数资料
型号: LT3757MPMSE#TRPBF
厂商: Linear Technology
文件页数: 28/36页
文件大小: 0K
描述: IC REG CTRLR PWM CM 10-MSOP
标准包装: 2,500
PWM 型: 电流模式
输出数: 1
频率 - 最大: 1MHz
电源电压: 2.9 V ~ 40 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -55°C ~ 125°C
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)裸露焊盘
包装: 带卷 (TR)
LT3757/LT3757A
TYPICAL APPLICATIONS
3.3V Input, 5V/10A Output Boost Converter
V IN
3.3V
C IN
22μF
6.3V
× 2
49.9k
34k
SHDN /UVLO
LT3757
SYNC
L1
0.5μH
V IN
INTV CC
GATE
C VCC
4.7μF
10V
X5R
D1
M1
34k
1%
V OUT
5V
10A
100
90
80
70
Efficiency vs Output Current
41.2k
300kHz
0.1μF
RT
SS
V C
FBX
SENSE
GND
6.8k
22nF
22
2.2nF
0.004
1W
+
15.8k
1%
C OUT1
150μF
6.3V
× 4
C OUT2
22μF
6.3V
X5R
× 4
60
50
40
30
20
0.001
0.01 0.1 1
OUTPUT CURRENT (A)
10
3757 TA02b
C IN : TAIYO YUDEN JMK325BJ226MM
C OUT1 : PANASONIC EEFUEOJ151R
C OUT2 : TAIYO YUDEN JMK325BJ226MM
D1: MBRB2515L
L1: VISHAY SILICONIX IHLP-5050FD-01
M1: VISHAY SILICONIX SI4448DY
3757 TA02a
Boost Preregulator for Automotive Stop-Start/Idle
V IN
3V TO 36V
10μF
50V
X5R
× 2
1M
SHDN /UVLO
L1
3.3μH
GATE
SENSE
M1
D1
10μF
50V
X5R
V OUT
9V MIN
2A
Transient V IN and V OUT Waveforms
OUTPUT POWER = 10W
698k
SYNC
LT3757A
GND
8m
RT
V IN
41.2k
300kHz
SS
V C
10k
FBX
INTV CC
75k
16.2k
+
C1
10μF
50V
× 4
0V
10ms/DIV
3757 TA03b
V OUT
5V/DIV
V IN
5V/DIV
0.1μF
10nF
4.7μF
L1: COILTRONIX DR127-3R3
M1: VISHAY SILICONIX Si7848BDP
D1: VISHAY SILICONIX 50SQ04FN
C1: KEMET T495X106K050A
3757 TA03a
3757afd
28
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