lt3845ife-trpbf Linear Technology Corporation, lt3845ife-trpbf Datasheet - Page 21

• Manufacturer Part Number: lt3845ife-trpbf
• Description: High Voltage Synchronous Current Mode Step-down Controller With Adjustable Operating Frequency
• Manufacturer: Linear Technology Corporation

TYPICAL APPLICATIONS
36V TRANSIENTS
9V TO 16V
C
C
D1: DIODES INC. B170
L1: WURTH 744318270LF
IN
OUT
R2
154k
: TDK C4532X7R1H685K
V
: MURATA GRM32ER60J107ME20
IN
100pF
R1
49.9k
Capable of Withstanding 36V Transients, All Ceramic Capacitors, Soft-Start and Burst Mode Enabled
C1
C
6.8μF
50V
×4
IN
R4
10k
C2
5600pF
8200pF
C
0.1μF
50V
IN2
C3
9V-16V to 5V at 10A DC/DC Converter, 500kHz Frequency Operation,
23.2k
R6
R3
1.1M
1
2
3
4
5
6
7
8
100
90
70
95
85
80
75
V
SHDN
C
BURST_EN
V
V
SYNC
f
SET
IN
SS
FB
C
0.1
LT3845
SGND
Effi ciency and Power Loss
17
SENSE
SENSE
V
BOOST
LOAD CURRENT (A)
IN
PGND
V
IN
V
= 16V
SW
TG
BG
CC
= 14V
+
–
V
IN
16
15
14
13
12
11
10
9
1
= 9V
BAV99
POWER LOSS
V
IN
D3A
BAV99
D3B
= 14V
D2 BAS19
1μF
C6
C4
2.2μF
16V
3845 TA03b
10
16V
1μF
C5
6
5
4
2
0
3
1
Si1555DL
M2
Si7884DP
M1
Si7884DP
D1
2.7μH
L1
R
0.005Ω
SENSE
LT3845
21
C
100μF
6.3V
×4
OUT
V
5V
10A
3845 TA03
OUT
3845fc