Datasheet

LT8582
36
8582f
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
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www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2012
LT 0112 • PRINTED IN USA
SWB2
SWA2
SWB1
SWA1
LT8582
8582 TA07a
PG1
SYNC1
CLKOUT1
CLKOUT2
100k
SYNC2
PG2
V
IN2
SHDN2
V
IN1
SHDN1
V
C1
SS1
RT1
GND
RT2
SS2
GATE2
V
C2
FBX2
FBX1
GATE1
V
OUT1
5V
0.7A (V
IN
= 3V)
1.4A (V
IN
= 9V)
1.5A (V
IN
= 16V)
V
OUT2
–5V
0.7A (V
IN
= 3V)
1.4A (V
IN
= 9V)
1.5A (V
IN
= 16V)
V
IN
3V to 19V
0.1µF
0.1µF
2.2nF
47pF
47pF
18.7k
11.8k
100k
60.4k
L3
4.7µH
s
L1
4.7µH
L2
4.7µH
2.2nF
45.3k
C
OUT2
22µF
×2
C
OUT1
22µF
×2
115k
115k
C
IN2
22µF
C
IN1
, C
IN2
: 22µF, 25V, X7R, 1210
C
OUT1
, C
OUT2
: 22µF, 16V, X7R, 1210
C
1
, C
2
: 2.2µF, 50V, X7R, 1206
D1, D2: VISHAY MSS2P3
L1, L2: WÜRTH WE TDC 74489440047
L3, L4: WÜRTH WE TDC 74489440047
C1
2.2µF
D1
C
IN1
22µF
D2
s
s
L4
4.7µH
s
C2
2.2µF
RELATED PARTS
TYPICAL APPLICATION
700kHz SEPIC and Inverting Converter Generates ±5V
Outputs from a 3V to 19V Input
Efficiency and Power Loss
(V
IN
= 12V with Load Between 5V
and –5V Outputs)
PART NUMBER DESCRIPTION COMMENTS
LT3581 3.3A (I
SW
), 42V, 2.5MHz, High Efficiency
Step-Up DC/DC Converter
V
IN
: 2.5V to 22V, V
OUT(MAX)
= 42V, I
Q
= 1.9mA, I
SD
= < 1A, 4mm × 3mm DFN-14,
MSOP-16E
LT3579 6A (I
SW
), 42V, 2.5MHz, High Efficiency
Step-Up DC/DC Converter
V
IN
: 2.5V to 16V, V
OUT(MAX)
= 42V, I
Q
= 1.9mA, I
SD
= < 1A, 4mm × 5mm QFN-20, TSSOP-20
LT3580 2A (I
SW
), 42V, 2.5MHz, High Efficiency
Step-Up DC/DC Converter
V
IN
: 2.5V to 32V, V
OUT(MAX)
= 42V, I
Q
= 1mA, I
SD
= < 1A, 3mm × 3mm DFN-8, MSOP-8E
LT3471 Dual Output 1.3A (I
SW
), 1.2MHz, High
Efficiency Step-Up DC/DC Converter
V
IN
= 2.4V to 16V, V
OUT(MAX)
= ±40V, I
Q
= 2.5mA, I
SD
< 1A, 3mm × 3mm DFN-10 Package
LT3479 3A (I
SW
), 40V, 3.5MHz, High Efficiency
Step-Up DC/DC Converter
V
IN
: 2.5V to 24V, V
OUT(MAX)
= 40V, I
Q
= 5mA, I
SD
= < 1A, 4mm × 3mm DFN-14, TSSOP-16E
LT3477 40V, 3A, Full Featured DC/DC Converter V
IN
= 2.5V to 25V, V
OUT(MAX)
= 40V, I
Q
= 5mA, I
SD
< 1A, QFN, TSSOP-20E Packages
LT1946/LT1946A 1.5A (I
SW
), 1.2MHz/2.7MHz, High
Efficiency Step-Up DC/DC Converter
V
IN
= 2.6V to 16V, V
OUT(MAX)
= 34V, I
Q
= 3.2mA, I
SD
< 1A, MS8E Package
LT1935 2A (I
SW
), 40V, 1.2MHz, High Efficiency
Step-Up DC/DC Converter
V
IN
= 2.3V to 16V, V
OUT(MAX)
= 40V, I
Q
= 3mA, I
SD
< 1A, ThinSOT™ Package
LT1310 2A (I
SW
), 40V, 1.2MHz, High Efficiency
Step-Up DC/DC Converter
V
IN
= 2.3V to 16V, V
OUT(MAX)
= 40V, I
Q
= 3mA, I
SD
< 1A, ThinSOT Package
LT3436 3A (I
SW
), 800kHz, 34V Step-Up DC/DC
Converter
V
IN
= 3V to 25V, V
OUT(MAX)
= 34V, I
Q
= 0.9mA, I
SD
< 6A, TSSOP-16E Package
LOAD CURRENT (A)
0
20
10
0
EFFICIENCY (%)
POWER LOSS (W)
30
80
70
60
50
90
10.6 0.8
1.2 1.6
8582 TA07b
40
0.2 0.4
1.4
0
1.0
0.5
3.5
3.0
2.5
2.0
4.0
1.5
4.5