lt3580ems8e-trpbf Linear Technology Corporation, lt3580ems8e-trpbf Datasheet - Page 20

• Manufacturer Part Number: lt3580ems8e-trpbf
• Description: Boost/inverting Dc/dc Converter With 2a Switch, Soft-start, And Synchronization
• Manufacturer: Linear Technology Corporation

LT3580
TYPICAL APPLICATIONS
20
2.6V TO 12V
OPERATING
12V TO 32V
TRANSIENT
V
IN
Wide Input Range SEPIC Converter with 5V Output Switches at 2.5MHz
V
C1: 2.2μF , 35V, X5R, 1206
C2: 10μF , 10V, X5R, 1206
C3: 1μF , 50V, X5R, 0805
D1: MICROSEMI UPS140
L1, L2: TDK VLCF4020T-4R7N1R2
5V
IN
AC COUPLED
C1
2.2μF
100mV/DIV
Transient Response with 400mA to 500mA Output Load Step
0.5A/DIV
I
C1, C2: 2.2μF , 25V, X5R, 1206
D1: MICROSEMI UPS140
L1: SUMIDA CDRH105R-470
L1
V
+I
C1
2.2μF
OUT
35.7k
L2
750kHz, 5V to 40V, 150mA Boost Converter
V
SHDN
RT
IN
V
SYNC
121k
IN
= 12V
LT3580
SHDN
RT
4.7μH
V
L1
SYNC
IN
SS
LT3580
47μH
SW
GND
L1
VC
FB
0.1μF
SS
1μF
100μs/DIV
C3
SW
46.4k
GND
VC
FB
0.1μF
D1
464k
10k
L2
4.7μH
1nF
D1
10k
4.7nF
22pF
3580 TA03b
3580 TA03
47pF
C2
10μF
V
5V, 600mA (V
3580 TA02
OUT
C2
2.2μF
500mA (V
400mA (V
300mA (V
V
40V
150mA
OUT
IN
IN
IN
IN
= 5V OR HIGHE
= 4V)
= 3V)
= 2.6V)
3580fa