参数资料
型号: LT3845EFE#PBF
厂商: Linear Technology
文件页数: 22/26页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 16TSSOP
标准包装: 95
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: -40°C ~ 125°C
封装/外壳: 16-TSSOP(0.173",4.40mm)裸露焊盘
包装: 管件
产品目录页面: 1332 (CN2011-ZH PDF)
LT3845
TYPICAL APPLICATIONS
9V-16V to 5V at 10A DC/DC Converter, 500kHz Frequency Operation,
Capable of Withstanding 36V Transients, All Ceramic Capacitors, Soft-Start and Burst Mode Enabled
V IN
9V TO 16V
36V TRANSIENTS
C IN
6.8μF
50V
×4
C IN2
0.1μF
50V
R3
1.1M
C5
1μF
16V
C3
8200pF
V IN
SHDN
C SS
LT3845
BOOST
TG
SW
M1
Si7884DP
L1
2.7μH
R SENSE
0.005Ω
V OUT
5V
BURST_EN
V CC
D1
10A
V FB
BG
D2 BAS19
M2
Si7884DP
SENSE
R2
154k
R1
49.9k
C1
100pF
R4
10k
V C
SYNC
f SET
SGND
PGND
+
SENSE –
C4
2.2 μ F
16V
C OUT
100 μ F
6.3V
×4
C2
R6
5600pF 23.2k
C IN : TDK C4532X7R1H685K
C OUT : MURATA GRM32ER60J107ME20
D1: DIODES INC. B170
L1: WURTH 744318270LF
D3B
BAV99
D3A
BAV99
C6
1 μ F
3845 TA03
Si1555DL
Ef?ciency and Power Loss
100
95
6
5
90
85
80
75
70
0.1
V IN = 9V
V IN = 14V
V IN = 16V
POWER LOSS
V IN = 14V
1
4
3
2
1
0
10
LOAD CURRENT (A)
3845 TA03b
3845fd
22
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