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LT3489 Ver la hoja de datos (PDF) - Linear Technology

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LT3489 Datasheet PDF : 12 Pages
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TYPICAL APPLICATIO S
12V Output Boost Converter
VIN
3.3V TO 5V
L1
3.3µH
D1
6
5
3 VIN
SW
OFF ON
SHDN
C1
4.7µF
RC
16.5k
CC
680pF
LT3489
1
2
VC
FB
SS COMP GND
CSS 8
7
4
100nF
R1
84.5k
R2
9.76k
C1: Taiyo Yuden JMK212BJ475MG, 4.7µF, 6.3V
C2: Taiyo Yuden GMK316BJ106ML, 10µF, 35V
D1: Diodes, Inc. DFLS220
L1: Toko A916CY-3R3M (Type D63CB)
VOUT
12V
625mA, VIN = 5V
410mA, VIN = 3.3V
C2
10µF
3489 TA03
LT3489
Efficiency
90
85
80
75
70
65
60
55
50
45
VIN = 3.3V
VIN = 5V
40
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
LOAD CURRENT (A)
3489 TA05
VOUT
500mV/DIV
AC COUPLED
Transient Response
IL1
1A/DIV
300mA
IOUT
100mA
VIN = 3.3V
50µs/DIV
3489 TA06
3489f
9

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