lt3579iufd-trpbf Linear Technology Corporation, lt3579iufd-trpbf Datasheet - Page 31

• Manufacturer Part Number: lt3579iufd-trpbf
• Description: Lt3579/lt3579-1 6a Boost/inverting Dc/dc Converter With Fault Protection Features
• Manufacturer: Linear Technology Corporation

TYPICAL APPLICATION
CLKOUT
10V/DIV
2V/DIV
2A/DIV
5V/DIV
FAULT
V
OUT
I
L
Output Short
10μs/DIV
V
5V
IN
1MHz, 5V to 12V Boost Converter can Survive Output Shorts
C
C
D1: VISHAY SSB43L
D2: CENTRAL SEMI CMDSH-3TR
L1: WÜRTH WE-PD 744771002
M1: SILICONIX SI7123DN
IN
OUT1
: 22μF , 16V, X7R, 1210
C
22μF
IN
, C
3579 TA05
OUT
100k
200k
100
90
80
70
60
50
40
30
20
86.6k
: 10μF, 25V, X7R, 1210
2.2μH
0
L1
V
FAULT
SHDN
RT
SYNC
IN
0.25
Effi ciency and Power Loss
SW1 SW2
LT3579
0.5
GND
LOAD CURRENT (A)
CLKOUT
0.75
GATE
SS
V
FB
D1
C
1
0.1μF
1.25 1.5 1.75
Transient Response with 0.7A to 1.5A to 0.7A Output Load Step
C
10μF
130k
OUT1
AC COUPLED
500mV/DIV
47pF
2A/DIV
1A/DIV
3579 TA03
6.3k
I
V
LOAD
OUT
M1
I
2
L
8k
3.2
2.8
2.4
2
1.6
1.2
0.8
0.4
0
D2
2.2nF
3579 TA03a
V
IN
V
12V
1.7A
C
10μF
OUT
OUT
LT3579/LT3579-1
100μs/DIV
3579 TA06
31
35791f