lx1677 Microsemi Corporation, lx1677 Datasheet - Page 6

• Manufacturer Part Number: lx1677
• Description: Amd64 Processor Vrm Controller
• Manufacturer: Microsemi Corporation

Copyright © 2000
Rev 1.1, 2003-03-03
Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C
otherwise noted and the following test conditions: VCC = 5V, VCCL = 5V, VIN = 12V, Switching Frequency = 500KHz.
UNDER VOLTAGE PROTECTION
UVLO
VCC
VIN
OVER VOLTAGE PROTECTION
Over Voltage Threshold
Under Voltage Threshold
DAC
DAC Output Voltage Positioning
Offset
Initial DACOUT Accuracy
High Side Driver Current
Lower MOSFET Driver Current
VID Logic High Threshold
VID Hysteresis
TM
Threshold
Hysteresis
Threshold
Hysteresis
Parameter
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
E L E C T R I C A L C H A R A C T E R I S T I C S ( C O N T )
V O L T A G E I D E N T I F I C A T I O N ( V I D ) C O D E
VID[4:0]
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
Symbol
I
I
HOx
LOx
-
Integrated Products Division
VCC Rising
VIN Rising
At No Load
1 ≤ V
0.925 ≤ V
VCx - VSx = 5.0 V, Load = 3300pf at
<500nSec
VCCL - PGN = 5.0 V, Load = 3300pf at
<500nSec
V
1.550
1.525
1.500
1.475
1.450
1.425
1.400
1.375
1.350
1.325
1.300
1.275
1.250
1.225
1.200
1.175
OUT
®
Microsemi
DACOUT
(V)
DACOUT
≤1.4
Test Conditions
VID[4:0]
< 1
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
AMD64 Processor VRM Controller
1.4 < V
P
RODUCTION
DACOUT
Shutdown
V
OUT
1.150
1.125
1.100
1.075
1.050
1.025
1.000
0.975
0.950
0.925
0.900
0.875
0.850
0.825
0.800
(V)
≤ 2
D
Min
ATA
0.5
≤
T
S
LX1677
A
HEET
0.725
1.85
≤
Typ
4.2
0.3
5.5
0.3
-20
1.5
1.3
0.3
1
70°C except where
Max
1
2
2
LX1677
Units
mV
%
V
V
V
A
A
V
V
Page 6