lx1676 Microsemi Corporation, lx1676 Datasheet - Page 7

• Manufacturer Part Number: lx1676
• Description: Mobile Amd Athlontm Vrm Controller
• Manufacturer: Microsemi Corporation

Copyright © 2000
Revision: 1.0, 4/12/2005
DACOUT
PWGD
ROSC
VID0
VID1
VID2
VID3
VID4
GND
FB +
VCC
FB -
VIN
TM
Band-
DACOUT
DACOUT
DAC
gap
- 30mV
AMP
OSC
FRQ
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
50µA
0.85
2.35
ILIM3 ILIM1
PGN
ILIM
-
Diff Amp
180°
VCC
PGOOD
VIN
0°
V
VS3
IN
DACOUT
UVLO
DFOUT
+
+
ILIM
_
_
35mV
offset
offset
35mV
S I M P L I F I E D B L O C K D I A G R A M
OV
UV
_
+
PGOOD
+
_
EA1 -
+
_
Integrated Products Division
IMIN
S R S
S
S
IMAX
PGN3
POR
®
Microsemi
-
Error Amp
S
Phase 1
VCCL
Fault
ILIM
I-Min
EO1
ENA
Mobile AMD Athlon™ VRM Controller
180°
VS3
0°
gm
I-Max
-
-
P
RODUCTION
VC3
I-MAX
I-MAX
+
I-MIN
I-MIN
S
R
R
S
-
Bandgap
90K
Q
Q
-
D
100K
ENA
+
Integrating
90K
Differential
ATA
Phase 2
Phase 2
Amp
Amp
S
HEET
VCCL
90K
90K
LX1676
VC1
HO1
VS1
LO1
PGN
VC2
HO2
VS2
LO2
EO2
EA2 -
LP1
LP2
Page 7