Datasheet

LT3580
24
3580fg
TYPICAL APPLICATIONS
–5V Output Inverting Converter Switches at 2.5MHz and Accepts Inputs Between 3.3V to 12V
Efficiency and Power Loss
vs Load Current
C2
10μF
V
OUT
–5V
800mA (V
IN
= 12V)
620mA (V
IN
= 5V)
450mA (V
IN
= 3.3V)
L1
4.7μH
C3
1μF
D1
60.4k
V
IN
3.3V TO 12V
V
IN
SW
3580 TA08a
LT3580
35.7k
10k
SHDN
GND
FB
VC
SYNC SS
RT
2.2nF
100pF
0.1μF
C1
2.2μF
C1: 2.2μF, 25V, X5R, 1206
C2: 10μF, 25V, X5R, 1206
C3: 1μF, 50V, X5R, 0805
D1: CENTRAL SEMI CMMSH1-40
L1, L2: COILCRAFT LSP4018-472ML
L2
4.7μH
LOAD CURRENT (mA)
0
40
EFFICIENCY (%)
POWER LOSS (W)
45
55
60
65
400
85
3580 TA08b
50
200
100
500
300 700600
70
75
80
0
200
400
600
1200
800
1000
V
IN
= 5V