Datasheet

LT3580
23
3580fg
TYPICAL APPLICATIONS
5V to 12V Boost Converter Switches at 2.5MHz and Uses a Tiny 4mm × 4mm × 1.7mm Inductor
Efficiency and Power Loss
vs Load Current
Transient Response with 400mA to
500mA to 400mA Output Load Step
Start-Up Waveforms
C2
4.7μF
V
OUT
12V
500mA
L1
3.3μH
D1
130k
V
IN
5V
V
IN
SW
3580 TA07a
LT3580
35.7k
10k
SHDN
GND
FB
VC
SYNC SS
RT
2.2nF
0.1μF
47pF
C1
4.7μF
C1, C2: 4.7μF, 25V, X5R, 1206
D1: MICROSEMI UPS120
L1: COILCRAFT LPS4018-332ML
LOAD CURRENT (mA)
0
50
EFFICIENCY (%)
POWER LOSS (W)
55
65
70
75
400
95
3580 TA07b
60
200
100
500
300 600
80
85
90
0
200
400
600
1400
800
1000
1200
I
L
0.5A/DIV
V
OUT
0.5V/DIV
AC COUPLED
100μs/DIV
3580 TA07c
I
L
1A/DIV
V
OUT
5V/DIV
V
SHDN
1V/DIV
2ms/DIV500mA LOAD
3580 TA07d