lx1668 Microsemi Corporation, lx1668 Datasheet - Page 9

• Manufacturer Part Number: lx1668
• Description: Programmable Multiple Output Dc Dc Controller
• Manufacturer: Microsemi Corporation

Copyright © 1999
Rev. 1.0
4/99
Ref
U1
C1
C2
C4, C6
C5
C7, C8, C9
C3
CSS
Q1
Q2
Q3
R
R1
R2
L1
L2
Total Number of Components
Optional Components for Over-Voltage Protection and Power Good Signal
Q4
R3
SENSE
Switcher
Synch.
Description
Controller IC
Capacitor, 1500µF, 6.3V, 44m ESR
Capacitor, 1500µF, 6.3V, 44m ESR
Capacitor, 330µF, Electrolytic
Capacitor, 22µF, Electrolytic
Capacitor, 1µF, SMD
Capacitor, 1µF, SMD, 16V
Capacitor, 0.1µF, SMD
MOSFET (low R
MOSFET (low R
MOSFET
Sense Resistor, 2.5m
Resistor, 0 (see Table 6)
Resistor, 2.5m (see Table 6)
Inductor, 2 - 3µH
Inductor, 1µH
SCR
Resistor, 10k
5V
1.5 - 2V @ 16A
[VRM 8.2/8.4]
FIGURE 6 — Pentium III Processor Power Supply (Whitney / Camino Chipsets)
CPU
3.3V
P
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
ROGRAMMABLE
V
DS(ON)
DS(ON)
CC
LX1668
LX1668 Bill of Materials (Refer to Product Highlight)
)
)
V
P
1.5V @ 3A
CC1
12V
R O D U C T I O N
GTL+
External
LDO
A P P L I C A T I O N C I R C U I T
B I L L O F M A T E R I A L S
M
U LTIPLE
2.5V @ 0.2A
Clock
LX1668 - LinFinity
MV-GX Sanyo
MV-GX Sanyo
IRL3102/3103, International Rectifier
IRL3303/3103, International Rectifier
IRLZ44N, International Rectifier
PCB trace
SMD
SMD
2N6504
SMD
Part Number / Manufacturer
MV-GX Sanyo
MV-GX Sanyo
HM00-97713 or HM00-98637, BI Technologies
O
1k
UTPUT
D
A T A
DC:DC C
12V
LM358
S
H E E T
Camino/Whitney
ONTROLLER
220µF
1.8V @ 3A
Chipset
220µF
220µF
220µF
2.5V @ 2A
Memory
RIMM
Qty.
LX1668
26
1
6
3
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
9