lt3579iufd-trpbf Linear Technology Corporation, lt3579iufd-trpbf Datasheet - Page 33
lt3579iufd-trpbf
Manufacturer Part Number
lt3579iufd-trpbf
Description
Lt3579/lt3579-1 6a Boost/inverting Dc/dc Converter With Fault Protection Features
Manufacturer
Linear Technology Corporation
Datasheet
1.LT3579IUFD-TRPBF.pdf
(40 pages)
- Current page: 33 of 40
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TYPICAL APPLICATION
100
90
80
70
60
50
40
30
20
0
Effi ciency and Power Loss
0.25
LOAD CURRENT (A)
0.5
0.75
V
5V
IN
C
C1: 4.7μF , 25V, X7R, 1206
C
D1: DIODES INC B230A
L1, L2: COOPER BUSSMANN DRQ125-3R3-R
IN
OUT
1
: 22μF , 16V, X7R, 1210
C
22μF
IN
: 10μF , 25V, X7R, 1210
3579 TA15
1.2MHz, 5V to -12V Inverting Converter
1.25
100k
3.2
2.8
2.4
2
1.6
1.2
0.8
0.4
0
71.5k
3.3μH
L1
V
SHDN
FAULT
RT
SYNC GND
IN
SW1 SW2
LT3579
CLKOUT
GATE
4.7μF
SS
C1
VC
FB
0.22μF
Transient Response with 0.5A to 1A to 0.5A Output Load Step
D1
AC COUPLED
3.3μH
500mV/DIV
27pF
L2
I
L1
1A/DIV
1A/DIV
I
V
LOAD
+ I
OUT
L2
20k
1nF
143k
3579 TA14
C
10μF
OUT
2
V
–12V
1.2A
OUT
LT3579/LT3579-1
100μs/DIV
3579 TA16
33
35791f
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