LT3581 LINER [Linear Technology], LT3581 Datasheet - Page 36

• Manufacturer Part Number: LT3581
• Description: 3.3A Boost/Inverting DC/DC Converter with Fault Protection
• Manufacturer: LINER [Linear Technology]

LT3581
Typical applicaTion
relaTeD parTs
PART NUMBER
LT3580
LT3471
LT3479
LT3477
LT1946/LT1946A 1.5A (I
LT1935
LT1310
LT3436

3.3µF
V
5V
IN
C1
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
C1: 3.3µF , 16V, X7R, 1206
C2: 1µF , 25V, X7R, 1206
C3: 4.7µF , 25V, X7R, 1206
D1: DIODES INC. PD3S230H-7
L1, L2: COILCRAFT MSD7342-332MLB
5V to –12V Inverting Converter Switches at 2MHz
43.2k
DESCRIPTION
2A (I
Dual Output 1.3A (I
Converter
40V, 3A, Full Featured DC/DC Converter with Soft-Start and Inrush
Current Protection
40V, 3A, Full Featured DC/DC Converter
2A (I
2A (I
3A (I
SW
SW
SW
SW
100k
SW
), 2.5MHz, High Efficiency Step-Up DC/DC Converter
), 40V, 1.2MHz, High Efficiency Step-Up DC/DC Converter
), 40V, 1.2MHz, High Efficiency Step-Up DC/DC Converter
), 800kHz, 34V Step-Up DC/DC Converter
3.3µH
●
L1
), 1.2MHz/2.7MHz, High Efficiency Step-Up DC/DC Converter
FAX: [phone]
V
SHDN
FAULT
RT
SYNC
IN
SW1 SW2
LT3581
GND
SW
CLKOUT
), 1.2MHz, High Efficiency Step-Up DC/DC
GATE
SS
FB
V
1µF
C2
C
●
www.linear.com
143k
47pF
D1
0.1µF
3.3µH
L2
11k
3581 TA05a
1nF
C3
4.7µF
V
–12V
625mA
OUT
COMMENTS
V
3mm × 3mm DFN-8, MSOP-8E Packages
V
3mm × 3mm DFN-10 Package
V
I
V
I
V
MS8E Package
V
ThinSOT Package
V
ThinSOT Package
V
TSSOP-16E Package
SD
SD
IN
IN
IN
IN
IN
IN
IN
IN
90
85
80
75
70
65
60
55
50
< 1µA, DFN, TSSOP Packages
< 1µA, QFN, TSSOP-20E Packages
= 2.5V to 32V, V
= 2.4V to 16V, V
= 2.5V to 24V, V
= 2.5V to 25V, V
= 2.6V to 16V, V
= 2.3V to 16V, V
= 2.3V to 16V, V
= 3V to 25V, V
0
Efficiency and Power Loss
125
LOAD CURRENT (mA)
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
250
 LINEAR TECHNOLOGY CORPORATION 2010
= 34V, I
375
= 42V, I
= ±40V, I
= 40V, I
= 40V, I
= 34V, I
= 40V, I
= 40V, I
Q
500
Q
Q
Q
Q
Q
Q
= 0.9mA, I
Q
= 1mA, I
= Analog/PWM,
= Analog/PWM,
= 3.2mA, I
= 3mA, I
= 3mA, I
= 2.5mA, I
3581 TA05b
LT 0310 • PRINTED IN USA
625
SD
SD
SD
SD
2000
1800
1600
1400
1200
1000
800
600
400
200
0
SD
< 1µA,
< 1µA,
< 1µA,
< 6µA,
SD
< 1µA,
< 1µA,
3581f