LT1946 Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Fabricante
LT1946 Datasheet PDF : 12 Pages
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LT1946
TYPICAL APPLICATIO S
12V Output Boost Converter
VIN
3.3V TO 5V
L1
4.7µH
D1
6
5
3 VIN
SW
OFF ON
SHDN
C1
4.7µF
RC
33.3k
CC
470pF
LT1946
1
2
VC
FB
SS COMP GND
CSS 8
7
4
100nF
C1: 4.7µF, X5R OR X7R, 6.3V
C2: 4.7µF, X5R OR X7R, 16V
D1: MICROSEMI UPS120 OR EQUIVALENT
L1: TDK RLF5018T-4R7M1R4
R1
84.5k
R2
9.76k
VOUT
12V
410mA, VIN = 5V
275mA, VIN = 3.3V
C2
4.7µF
1946 TA02
Efficiency
90
VIN = 5V
85
80
75
VIN = 3.3V
70
65
60
55
50
0
100 200 300 400 500
LOAD CURRENT (mA)
1946 TA02a
VOUT
100mV/DIV
AC COUPLED
Transient Response
ILI
0.5A/DIV
ILOAD
175mA
100mA
VIN = 3.3V
100µs/DIV
1946 TA02b
1946fb
10
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