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
ELECTRICAL CHARACTERISTICS (CONTINUED)
Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C ≤ TA ≤ 70°C except where
otherwise noted and the following test conditions: VCC = 5V, VCCL = 5V, VIN = 12V, Switching Frequency = 500KHz.
Parameter
` UVLO
VCC
Threshold
Hysteresis
VIN
Threshold
Hysteresis
` OVER VOLTAGE PROTECTION
Over Voltage Threshold
` UNDER VOLTAGE PROTECTION
Under Voltage Threshold
` DAC
Initial DACOUT Accuracy
High Side Driver Current
Lower MOSFET Driver Current
VID Logic High Threshold
VID Hysteresis
Symbol
Test Conditions
VCC Rising
VIN Rising
-
1 ≤ VDACOUT ≤1.4
0.925 ≤ VDACOUT < 1
1.4 < VDACOUT ≤ 2
IHOx
VCx - VSx = 5.0 V, Load = 3300pf at
<500nSec
ILOx
VCCL - PGN = 5.0 V, Load = 3300pf at
<500nSec
LX1676
Units
Min Typ Max
4.2
0.3
V
5.5
0.3
2.35
V
0.800
V
1
2
%
1
A
1.5
A
0.5
1.3
2
V
0.3
V
VOLTAGE IDENTIFICATION (VID) CODE
VID[4:0]
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
VOUT (V)
2.000
1.950
1.900
1.850
1.800
1.750
1.700
1.650
1.600
1.550
1.500
1.450
1.400
1.350
1.300
Shutdown
VID[4:0]
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
VOUT (V)
1.275
1.250
1.225
1.200
1.175
1.150
1.125
1.100
1.075
1.050
1.025
1.000
0.975
0.950
0.925
Shutdown
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 6
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