LT3581 LINER [Linear Technology], LT3581 Datasheet - Page 30

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

LT3581
Typical applicaTions
0
100
95
90
85
80
75
70
65
60
55
50
0
V
IN
300
= 9V
9V TO 16V
LOAD CURRENT (mA)
V
2MHz, 12V SEPIC Converter Can Accept Input Voltages from 9V to 16V
IN
Efficiency
600
V
3.3µF
= 12V
IN
V
IN
C1
= 16V
C1: 3.3µF , 25V, X7R, 1206
C2: 2.2µF , 50V, X7R, 1206
C3: 10µF , 25V, X7R, 1210
D1: CENTRAL SEMI CTLSH2-40M832
L1, L2: COILCRAFT MSD7342-332MLB
900
43.2k
12.01
12.00
11.99
11.98
11.97
11.96
1200
100k
3.3µH
3581 TA06b
0
L1
1500
V
SHDN
FAULT
RT
SYNC
Load Regulation at V
IN
200
SW1
LT3581
GND
400
CLKOUT
SW2
LOAD REGULATION ~0.25%/A
GATE
I
600
LOAD
SS
FB
V
2.2µF
C
C2
(mA)
800
100pF
•
1000
L2
3.3µH
0.1µF
IN
12.000
11.998
11.996
11.994
11.992
11.990
130k
D1
= 12
1200 1400
3581 TA06d
8
LINE REGULATION ~0.0044%/V
Line Regulation with No Load
10k
9
2.2nF
3581 TA06a
10
11
C3
10µF
V
12V
1A (V
1.1A (V
1.3A (V
OUT
12
V
IN
IN
(V)
IN
IN
13
= 9V)
= 12V)
= 16V)
14
15
3581 TA06c
16
17
3581f