SC1544 Ver la hoja de datos (PDF) - Semtech Corporation
Número de pieza
componentes Descripción
Fabricante
SC1544 Datasheet PDF : 15 Pages
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SC1544
POWER MANAGEMENT
Typical Applications Circuits
PRELIMINARY
5V
GND
3.3V
GND
5VSB
GND
5V DUAL
GND
3.3V DUAL
GND
3.3V DUAL MEM
GND
AGP
GND
1.8V
GND
TYPEDET
PWR_OK
EN
/SLP_S3
/SLP_S5
USB
PCI
C1
100uF/6.3V
C2
100uF/6.3V
C3
100uF/6.3V
C4
100uF/6.3V
Q3
IRLR3103
C5
100uF/6.3V
Q5
IRLR3103
Q6
IRLR3103
C6
100uF/6.3V
Q7
IRLR3103
C7
100uF/6.3V
Q8
IRLR3103
C8
100uF/6.3V
Q1
IRLR3103
Q4
IRLR3103
U1
1
G5
2
3.3VDM
3
G6
4
G7
5
AGP
6
TYPEDET
7
PWR_OK
8
EN
9
/S3
10
/S5
11
USB
12
PCI
Q2
IRLR3103
SC1544-3.3
24
G8
23
1.8V
22
G4
21
3.3VD
20
GND
19
G2/3
18
G1
17
5VD
16
5VSB
15
FC
14
+CAP
13
-CAP
C9 0.01uF
Notes:
(1) 3.3V option shown - see below for Q5 configuration for 2.5V option.
(2) 1.8V output shown powered from 3.3V. If powered from 5VSB, this becomes 1.8VSB.
(3) See Applications Information.
C10
C11
0.1uF
1uF
3.3V
GND
5VSB
GND
2.5V DUAL MEM
GND
C2
D1
100uF/6.3V
C3
100uF/6.3V
C6
100uF/6.3V
Q5
Q6
Q5 body diode in series with D1 to pre-charge 2.5V Dual Memory
D1 to ensure that the linear regulator will still regulate
2002 Semtech Corp.
11
U1
1
G5
2
2.5VDM
3
G6
4
G7
5
AGP
6
TYPEDET
7
PWR_OK
8
EN
9
/S3
10
/S5
11
USB
12
PCI
SC1544-2.5
24
G8
23
1.8V
22
G4
21
3.3VD
20
GND
19
G2/3
18
G1
17
5VD
16
5VSB
15
FC
14
+CAP
13
-CAP
www.semtech.com
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