LT8580 データシートの表示（PDF） - Linear Technology
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LT8580
Linear Technology
LT8580 Datasheet PDF : 32 Pages
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LT8580
typical Applications
750kHz, –15V Output Inverting Converter Accepts 5V to 40V Input
VIN
5V TO 40V
L1
• 22µH
C1
1µF
10k
VIN
SW
SHDN
FBX
CIN
4.7µF
LT8580
SYNC
VC
RT GND SS
113k
0.22µF
L2
22µH •
D1
182k
VOUT
–15V
90mA (VIN = 5V)
210mA (VIN = 12V)
420mA (VIN = 40V)
COUT
4.7µF
13.7k
10nF
47pF
8580 TA03a
L1, L2: COILCRAFT 22µH MSD7342-223
D1: CENTRAL SEMI CMMSH1-60
CIN: 4.7µF, 50V, 1206, X5R
COUT: 4.7µF, 25V, 1206, X7R
C1: 1µF, 100V, 0805, X7S
Efficiency and Power Loss (VIN = 12V)
90
640
80
560
70
480
60
400
50
320
40
240
30
160
20
10
0
EFFICIENCY 80
POWER LOSS
0
50
100
150
200
LOAD CURRENT (mA)
8580 TA03b
60mA to 160mA to 60mA Output Load Step (VIN = 12V)
ISTEP
100mA/DIV
VOUT
200mV/DIV
AC-COUPLED
IL1 + IL2
200mA/DIV
200µs/DIV
8580 TA03c
8580f
26
For more information www.linear.com/LT8580
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