LT3580
TYPICAL APPLICATIONS
750kHz, 5V to 40V, 150mA Boost Converter
L1
47μH
D1
V
OUT
V
5V
IN
40V
150mA
C2
2.2μF
V
SW
GND
IN
SHDN
464k
LT3580
RT
FB
VC
SYNC
SS
10k
4.7nF
47pF
C1
2.2μF
121k
0.1μF
3580 TA02
C1, C2: 2.2μF, 25V, X5R, 1206
D1: MICROSEMI UPS140
L1: SUMIDA CDRH105R-470
Wide Input Range SEPIC Converter with 5V Output Switches at 2.5MHz
C3
L1
1μF
D1
4.7μH
V
IN
V
OUT
2.6V TO 12V
OPERATING
5V, 600mA (V = 5V OR HIGHER)
IN
500mA (V = 4V)
IN
IN
IN
L2
4.7μH
C2
10μF
12V TO 32V
TRANSIENT
400mA (V = 3V)
V
SW
GND
IN
300mA (V = 2.6V)
SHDN
46.4k
LT3580
RT
FB
VC
SYNC
SS
10k
1nF
C1
2.2μF
22pF
35.7k
0.1μF
3580 TA03a
C1: 2.2μF, 35V, X5R, 1206
C2: 10μF, 10V, X5R, 1206
C3: 1μF, 50V, X5R, 0805
D1: MICROSEMI UPS140
L1, L2: TDK VLCF4020T-4R7N1R2
Transient Response with 400mA to 500mA Output Load Step
V
OUT
100mV/DIV
AC COUPLED
I
+I
L1 L2
0.5A/DIV
3580 TA03b
V
IN
= 12V
100μs/DIV
3580fc
20
Linear [ Linear ]
