参数资料
型号: LT3845MPFE#TRPBF
厂商: Linear Technology
文件页数: 21/26页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 16TSSOP
标准包装: 2,500
PWM 型: 电流模式
输出数: 1
频率 - 最大: 500kHz
电源电压: 4 V ~ 60 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: 16-TSSOP(0.173",4.40mm)裸露焊盘
包装: 带卷 (TR)
LT3845
TYPICAL APPLICATIONS
9V-16V to 3.3V at 10A DC/DC Converter Capable of Withstanding 60V Transients,
All Ceramic Capacitors and Soft-Start Enabled
V IN
9V TO 16V
60V TRANSIENTS
C IN
2.2μF
100V
×4
C IN2
0.1μF
100V
R3
1.1M
C5
1μF
16V
V IN
BOOST
SHDN
C SS
LT3845
TG
SW
M1
Si7370DP
L1
3.3μH
R SENSE
0.006Ω
V OUT
3.3V
R1
10k
SYNC
C3
8200pF
BURST_EN
V FB
V C
SYNC
V CC
BG
PGND
SENSE +
D2A BAV99
M2
Si7370DP
D1
10A
C OUT
100 μ F
6.3V
R2
16.9k
R4
25k
C2
R5
100k
R6
f SET
SGND
SENSE –
C4
2.2 μ F
16V
×5
6800pF 49.9k
C IN : TDK C4532X7R2A225K
C OUT : MURATA GRM32ER60J107ME20
D1: DIODES INC. B3100
L1: WURTH 7443551370
V IN
R7
4.99k
Q1
D2B
BAV99
D3
12V
60V
3845 TA02
Ef?ciency and Power Loss
95
90
85
V IN = 9V
6
5
4
80
75
V IN = 14V
V IN = 16V
3
2
70
65
0.1
1
POWER LOSS
V IN = 14V
1
0
10
LOAD CURRENT (A)
3845 TA02b
3845fd
21
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