LX1664 Просмотр технического описания (PDF) - Microsemi Corporation
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LX1664 Datasheet PDF : 17 Pages
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PRODUCT DATABOOK 1996/1997
LX1664/64A, LX1665/65A
DUAL OUTPUT PWM CONTROLLERS WITH 5-BIT DAC
PRODUCTION DATA SHEET
APPLICATION INFORMATION
C3
0.1µF
VID0
VID1
VID2
VID3
VID4
12V
U1
LX1665
1 SS
2 INV
V 3
CC_CORE
4 VID0
5 VID1
6 VID2
7 VID3
8 VID4
9 LFB
VC1 18
TDRV 17
GND 16
BDRV 15
VCC 14
CT 13
OV 12
LDRV 11
PWRGD 10
18-pin
Wide Body SOIC
F1 15A
CS
5V
L2
1µH
C5
1µF
Q1
IRL3102
C2
6.3V
1500µF x3
RS
L1
Supply Voltage
for CPU Core
Q2
IRL3303
C8
680pF
2.5µH
5V or 3.3V
Supply
C9
330µF
VOUT
C1
6.3V, 1500µF x 3
** Three capacitors for Pentium
Four capacitors for Pentium II
OV
PWRGD
Q4
IRLZ44
R5
1.5V for
GTL+ Bus Supply
C7
330µF
R6
FIGURE 8 — VRM 8.2 (Pentium II / Deschutes) Reference Design With Loss-Less Current Sensing
C3
0.1µF
VID0
VID1
VID2
VID3
VID4
D2
1N4148
D3
1N4148
12V 5V
F1 20A
U1
LX1665
1 SS
2 INV
V 3
CC_CORE
4 VID0
5 VID1
6 VID2
7 VID3
8 VID4
9 LFB
VC1 18
TDRV 17
GND 16
BDRV 15
VCC 14
CT 13
OV 12
LDRV 11
PWRGD 10
18-pin
Wide-Body SOIC
C10
C5
0.1µF
R7
10
C8
D4
1500µF 1N5817
Q1
IRL3303
Q2
IRL3102
6.3V
1500µF x3
C2
R1
L1 2.5µH 0.0025
C9
330µF
Q3
SCR
2N6504
Supply Voltage
for CPU Core
VOUT
C1
R2, 10k
PWRGD
Q4
IRLZ44
Supply Voltage
For I/O Chipset or GTL+ Bus
R5
C7
330µF
R6
FIGURE 9 — Full-Featured Pentium II Processor Supply With 12V Power Input
10
Copyright © 1999
Rev. 1.2 11/99
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