LX1676CPW 데이터 시트보기 (PDF) - Microsemi Corporation
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LX1676CPW Datasheet PDF : 16 Pages
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LX1676
TM
®
Mobile AMD Athlon™ VRM Controller
PRODUCTION 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
Symbol
Test Conditions
` PHASE 2 DIFFERENTIAL AMPLIFIER
Input Offset Voltage
Gain
Common Mode Rejection Ratio
VOS LP1=LP2
ADA
CMRRDA Common Mode Voltage = 0 to 2 V
Input Resistance
Unity Gain Bandwidth
` TRANSIENT CONTROL LOOP
RB
UGBW
Voltage Droop Sense
Propagation Delay : FB+ and
FB- to I-MAX
Voltage Overshoot Sense
Propagation Delay : FB+ and
FB- to I-MIN
Voltage Droop Sense Threshold
Voltage Overshoot Sense
Threshold
` OUTPUT DRIVERS
VDFOUT Rising 3000pF Load
VDFOUT Falling 3000pF Load
Driver
Rise Time
Fall Time
High Side Driver Voltage:
tRISE
tFALL
CL = 3000pF, VCx - VSx = 5V
[VHOx - VVSx]
Drive High
Drive Low
Low Side Driver Voltage:
VHOx = 20mA, VCx - VSx = 5.0 V
VHOx = -20mA, VCx - VSx = 5.0 V
[VLOx – VPGN]
Drive High
Drive Low
High Side Driver Current
VLOx = 20mA, VCCL - VPGN = 5.0 V
VLOx = -20mA, VCCL - VPGN = 5.0 V
IHOx
VCx - VSx = 5.0 V, Load = 3300pf at
<500nSec
Lower MOSFET Driver Current
ILOx
` PHASE 1 OVER CURRENT PROTECTION
VCCL - PGN = 5.0 V, Load = 3300pf at
<500nSec
Current Sense Bias Current
IILIM1
Current Sense Delay
tCSD(ILIM1)
` TRANSIENT CORRECTION LOOP OVER CURRENT PROTECTION
Current Sense Bias Current
IILIM3
Current Sense Delay
tCSD(ILIM3)
` ENABLE INPUT / VOLTAGE IDENTIFICATION (VID)
Logic Low Threshold
Hysteresis
Pullup Resistance
` POWER GOOD
Low Output Voltage
VPWGD IPWGD = -3mA
LX1676
Units
Min Typ Max
-6
6
mV
0.98 1 1.02 V/V
60
dB
180
KΩ
4
MHz
50
nS
50
nS
40
mV
40
mV
50
nS
50
4.8 4.9
V
0.1 0.2
4.8 4.9
V
0.1 0.2
1
A
1.5
A
44
50
60 µA
200 400 500 nS
40
50
60 µA
200 400 500 nS
1.5
V
0.3
V
100
KΩ
0.5
V
Copyright © 2000
Revision: 1.0, 4/12/2005
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
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