LT3579 LINER [Linear Technology], LT3579 Datasheet - Page 40

• Manufacturer Part Number: LT3579
• Description: 6A Boost/Inverting DC/DC Converter with Fault Protection
• Manufacturer: LINER [Linear Technology]

LT3579/LT3579-1
RELATED PARTS
PART NUMBER
LT3581
LT3580
LT3479
40
TYPICAL APPLICATION
3.3V TO V
C
C
C1: 4.7μF , 25V, X7R, 1206
C
D1: DIODES INC MBRM360
L1, L2: COOPER BUSSMANN DRQ125-6R8-R
LINE REGULATION (V
LOAD REGULATION (V
PWR
VIN
OUT
9V TO 16V
: 4.7μF , 25V, X7R, 1206
: 10μF , 25V, X7R, 1210
: 4.7μF , 25V, X7R, 1206
1MHz SEPIC Converter Generates a 12V Output from
V
PWR
V
PWR
IN
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
C
4.7μF
VIN
DESCRIPTION
3.3A (I
Step-Up DC/DC Converter
2A (I
DC/DC Converter
3A (I
DC/DC Converter
IN
C
4.7μF
PWR
•
PWR
= 5V, I
100k
6.8μH
86.6k
= 12V, V
SW
SW
L1
SW
OUT
V
), 42V, 2.5MHz, High Effi ciency Step-Up
), 40V, 3.5MHz, High Effi ciency Step-Up
SHDN
FAULT
RT
SYNC GND
●
a 9V to 16V Input
IN
), 42V, 2.5MHz, High Effi ciency
FAX: [phone]
SW1
= 1A) = 0.017%/V
IN
LT3579
= 5V) = –0.23%/A
SW2
CLKOUT
*MAX OUTPUT CURRENT
V
V
GATE
SS
IN
IN
4.7μF
VC
C1
FB
0.22μF
= 3.3V TO 5V
= V
PWR
L
6.8μH
•
2
●
D1
47pF
www.linear.com
V
PWR
1.6A
1.4A
9.53k
= 9V V
2.2nF
130k
3579 TA29
PWR
V
12V
1.9A*
1.9A
1.4A
C
10μF
OUT
OUT
3
= 12V
COMMENTS
V
MSOP-16E
V
MSOP-8E
V
TSSOP-16E
IN
IN
IN
: 2.5V to 22V, V
: 2.5V to 32V, V
: 2.5V to 24V, V
OUT(MAX)
OUT(MAX)
OUT(MAX)
100
90
80
70
60
50
40
30
20
0
= 42V, I
= 42V, I
= 40V, I
0.25 0.5
Effi ciency and Power Loss
Q
Q
Q
= 1.9mA, I
= 1mA, I
= 5mA, I
LOAD CURRENT (A)
0.75
SD
SD
© LINEAR TECHNOLOGY CORPORATION 2010
1
SD
= < 1μA, 3mm × 3mm DFN-8,
= < 1μA, 4mm × 3mm DFN-14,
1.25 1.5 1.75
= < 1μA, 4mm × 3mm DFN-14,
V
V
PWR
IN
= 5V
= 12V
3579 TA08
LT 0410 • PRINTED IN USA
2
3.2
2.8
2.4
2
1.6
1.2
0.8
0.4
0
35791f