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LT3581IMSE#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36
LT3581
28
3581fb
For more information www.linear.com/LT3581
TYPICAL APPLICATIONS
Figure 18. 2MHz, 5V to 12V, 830mA Boost Converter with Output Short Circuit Protection
V
IN
5V
V
IN
6.04k
100k
130k
D2
D1
M1
43.2k
C1
4.7µF
L1
1.5µH
1nF
3581 F18
0.1µF
10.5k
C2
4.7µF
V
OUT
12V
830mA
C3
4.7µF
SW1 SW2
FB
CLKOUT
GATE
V
C
SS
V
IN
RT
GND
SYNC
C1: 4.7µF, 16V, X7R, 1206
C2, C3: 4.7µF, 25V, X7R, 1206
D1: DIODES INC. PD3S230H-7
D2: VISHAY MSS2P3
L1: SUMIDA CDR6D28MN-IR5
M1: VISHAY SILICONIX SI7123DN
FAULT
SHDN
LT3581
56pF
18.7k
10k
Transient Response with 430mA to 830mA to 430mA Load Step
V
OUT
AC-COUPLED
1V/DIV
LOAD
0.5A/DIV
I
L
1A/DIV
3581 TA02a
50µs/DIV
Switching Waveforms with 830mA Load
V
OUT
AC-COUPLED
200mV/DIV
V
CLKOUT
(BW LIMIT)
2V/DIV
V
SW
0.5A/DIV
I
L
1A/DIV
3581 TA02b
500ns/DIV
2MHz, 5V, 1.1A Boost Converter Operates from an Input Range of 2.8V to 4.2V
D1
V
IN
2.8V TO 4.2V
100k
45.3k
43.2k
C1
3.3µF
L1
0.68µH
1.5nF
3581 TA03a
0.1µF
6.98k
V
OUT
5V
1.1A
C2
22µF
SW1 SW2
FB
CLKOUT
GATE
V
C
SS
V
IN
RT
GND
SYNC
FAULT
SHDN
LT3581
68pF
C1: 3.3µF, 16V, X7R, 1206
C2: 22µF, 16V, X7R, 1210
D1: DIODES INC. PD3S230H-7
L1: VISHAY IHLP1616 BZ-01-OR68 (ONLY 4.1mm × 4.5mm × 2mm)
Efficiency and Power Loss at V
IN
= 3.3V
LOAD CURRENT (mA)
0
50
EFFICIENCY (%)
POWER LOSS (mW)
55
65
70
75
400
90
3581 TA03b
60
200 12001000800600
80
85
0
200
600
2000
1200
1400
1600
1800
400
800
1000
LT3581
29
3581fb
For more information www.linear.com/LT3581
High Efficiency, VFD (Vacuum Fluorescent Display) Power Supply Switches at 2MHz to Avoid AM Band
TYPICAL APPLICATIONS
V
IN
9V TO 16V
V
IN
V
OUT2
97V
90mA (V
IN
= 9V)
140mA (V
IN
= 12V)
180mA (V
IN
= 16V)
V
OUT1
65V
60mA (V
IN
= 9V)
70mA (V
IN
= 12V)
90mA (V
IN
= 16V)
24k
C2
2.2µF
L1
10µH
C5
2.2µF
C4
2.2µF
0.47µF
43.2k
100pF
1nF
100k
C1
2.2µF
365k
D3
D2
D1
D7
D9*
10V
D4
D5
D6
10k
32.6k
SW1 SW2
FB
V
C
SS
GND
SYNC
GATE
CLKOUT
V
IN
RT
FAULT
SHDN
LT3581
3581 TA04a
8.06k
C6
2.2µF
C7
2.2µF
C3
2.2µF
D8*
M1*
C1: 2.2µF, 25V, X7R, 1206
C2 TO C7: 2.2µF, 50V, X7R, 1206
D1 TO D7: CENTRAL SEMI SOD123F
D8: CENTRAL SEMI CMDSH-3TR
D9: CENTRAL SEMI CMHZ5240B-LTZ
L1: TAIYO YUDEN NR6045T100M
M1: VISHAY SILICONIX SI7611DN
*OPTIONAL,
FOR OUTPUT SHORT-CIRCUIT
PROTECTION
DANGER HIGH VOLTAGE! OPERATION BY HIGH VOLTAGE TRAINED PERSONNEL ONLY
Transient Response with 60mA to 140mA to 60mA
Load Step on V
OUT2
(V
IN
= 12V)
V
OUT
AC-COUPLED
2V/DIV
I
LOAD
0.1A/DIV
I
L
0.5A/DIV
3581 TA04b
100µs/DIV
Start-Up Waveforms
V
OUT2
50V/DIV
V
OUT1
50V/DIV
V
SS
1V/DIV
I
L
0.5A/DIV
3581 TA04c
100ms/DIV
Efficiency and Power Loss at V
IN
= 12V
TOTAL OUTPUT POWER (W)
0
70
EFFICIENCY (%)
POWER LOSS (mW)
75
8
90
3581 TA04d
4 201612
80
85
1.0
3.0
1.5
2.0
2.5
LT3581
30
3581fb
For more information www.linear.com/LT3581
TYPICAL APPLICATIONS
2MHz, 12V SEPIC Converter Can Accept Input Voltages from 9V to 16V
V
IN
9V TO 16V
100k
130k
43.2k
C1
3.3µF
2.2nF
3581 TA06a
0.1µF
C3
10µF
10k
V
OUT
12V
1A (V
IN
= 9V)
1.1A (V
IN
= 12V)
1.3A (V
IN
= 16V)
C2
2.2µF
SW1 SW2
FB
CLKOUT
GATE
V
C
SS
V
IN
RT
GND
SYNC
FAULT
SHDN
LT3581
100pF
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
L2
3.3µH
L1
3.3µH
•
•
D1
Efficiency Line Regulation with No Load
Load Regulation at V
IN
= 12
LOAD CURRENT (mA)
0
50
EFFICIENCY (%)
55
65
70
75
1200
100
95
3581 TA06b
60
300
1500
900600
80
85
90
V
IN
= 16V
V
IN
= 9V
V
IN
= 12V
V
IN
(V)
8
11.990
V
OUT
(V)
11.998
11.996
11.994
11.992
12.000
9 12 141310 1511 16
17
3581 TA06c
LINE REGULATION ~0.0044%/V
I
LOAD
(mA)
0
11.96
V
OUT
(V)
12.00
11.99
11.98
11.97
12.01
400 800600 1000200 1200
1400
3581 TA06d
LOAD REGULATION ~0.25%/A
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36

LT3581IMSE#TRPBF

Mfr. #:
Buy LT3581IMSE#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 3A Boost/Inverting DC/DC Converter with Fault Protection
Lifecycle:
New from this manufacturer.
Delivery:
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