LX1676 Просмотр технического описания (PDF) - Microsemi Corporation
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LX1676 Datasheet PDF : 16 Pages
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INTEGRATED PRODUCTS
LX1676
Mobile AMD Athlon™ VRM Controller
PRELIMINARY DATA SHEET
SIMPLIFIED BLOCK DIAGRAM
DFOUT EA1 -
2
4
EO1
3
FB - 1
FB + 38
Diff Amp
-
Phase 1
Error Amp
-
0°
-
DACOUT 5
VID_0 15
VID_1 14
VID_2 13
VID_3 12
VID_4 11
PWGD 6
VIN 8
ROSC 9
VCC 19
GND 7
50µA
DAC
DACOUT
- 30mV
DACOUT
0.85
2.35
Band-
gap
VCC
VIN
PGOOD
_
UV
+
_
OV
+
UVLO
POR
ILIM
SRS
Fault
S
SS
-
180°
gm
PGOOD
DACOUT
AMP
FRQ
OSC
VIN
0°
180°
PGN VS3
ILIM
35mV
+ offset
_ 35mV
offset
ILIM
IMAX
+
_
_IMIN
+
VCCL
ENA
I-MAX
SQ
R
I-MIN
I-MIN
RQ
S
I-MAX
VCCL
22
28 VC1
27 HO1
26 VS1
25 LO1
24 PGN
18 VC2
17 HO2
16 VS2
23 LO2
Phase 2
Integrating
- Amp
100K
90K
90K
Phase 2
Differential
Amp
-
90K
37 EO2
36 EA2 -
34 LP1
35 LP2
90K
Bandgap
32 33
ILIM3 ILIM1
20
21
31 30 29
PGN3 I-Min VS3 I-Max VC3
10
ENA
Copyright © 2000
Revision: 0.4b, 9/14/2004
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 7
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