SC1454-28IMSTR Ver la hoja de datos (PDF) - Semtech Corporation
Número de pieza
componentes Descripción
Fabricante
SC1454-28IMSTR Datasheet PDF : 14 Pages
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SC1454
POWER MANAGEMENT
Typical Characteristics (Cont.)
Output Spectral Noise Density vs. Frequency
vs. Output Capacitance
10000
1000
100
VIN = 2.8V
VOUT = 1.8V
10
IOUT = 50mA
CIN = 1µF
CBYP = 10nF
TA = 25°C
1
1.E+01
1.E+02
1.E+03
1.E+04
f (Hz)
Evaluation Board Schematic
COUT = 2.2µF
COUT = 10µF
1.E+05
1.E+06
J6
OUTA
J7
OUTB
J4
RIPPLE A
12345
J5
RIPPLE B
12345
1
2
R2
3
R4
C1
C2
U1 SC1454xIMS
1
OUTA
8
IN
2
OUTB
7
ENA
3
GND
6
BYP
4
SETA
5
ENB
JP3
1
2
IQ MON
J1
ENA
J2
ENB
JP1
1
ON
2
3
OFF
OUTA ENABLE
J3
VIN
JP2
1
ON
2
3
OFF
OUTB ENABLE
R1
C3
C4
R3
+ C5
220uF
JP4
EXT
1
2
INT
3
OUTA SET
R5
R6
J8
OUTB LOAD DRV
U2
8
7D
6D
5D
D
1
S2
S3
S4
G
Si4410
JP5
EN
1
2
3
OFF
OUTB LOAD
U3
8
7D
6D
5D
D
1
S2
S3
S4
G
Si4410
J9
OUTA LOAD DRV
JP6
EN
1
2
3
OFF
OUTA LOAD
J10 J11 J12 J13 J14 J15
GND GND GND GND GND GND
ã 2000 Semtech Corp.
11
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