lx1676 Microsemi Corporation, lx1676 Datasheet - Page 5

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

Copyright © 2000
Revision: 1.0, 4/12/2005
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.
PHASE 2 DIFFERENTIAL AMPLIFIER
Input Offset Voltage
Gain
Common Mode Rejection Ratio
Input Resistance
Unity Gain Bandwidth
TRANSIENT CONTROL LOOP
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
Driver
High Side Driver Voltage:
[V
Low Side Driver Voltage:
[V
High Side Driver Current
Lower MOSFET Driver Current
PHASE 1 OVER CURRENT PROTECTION
Current Sense Bias Current
Current Sense Delay
TRANSIENT CORRECTION LOOP OVER CURRENT PROTECTION
Current Sense Bias Current
Current Sense Delay
ENABLE INPUT / VOLTAGE IDENTIFICATION (VID)
Logic Low Threshold
Hysteresis
Pullup Resistance
POWER GOOD
Low Output Voltage
HOx
LOx
TM
– V
- V
VSx
Rise Time
Fall Time
Drive High
Drive Low
PGN
Drive High
Drive Low
Parameter
]
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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 I N U E D )
CMRR
t
t
Symbol
CSD(ILIM1)
CSD(ILIM3)
UGBW
V
I
I
t
t
V
A
I
ILIM1
ILIM3
PWGD
RISE
FALL
I
R
HOx
LOx
OS
DA
B
DA
Integrated Products Division
LP1=LP2
Common Mode Voltage = 0 to 2 V
V
V
CL = 3000pF, VCx - VSx = 5V
V
V
V
V
VCx - VSx = 5.0 V, Load = 3300pf at
<500nSec
VCCL - PGN = 5.0 V, Load = 3300pf at
<500nSec
I
PWGD
DFOUT
DFOUT
HOx
HOx
LOx
LOx
®
= 20mA, VCCL - VPGN = 5.0 V
= -20mA, VCCL - VPGN = 5.0 V
Microsemi
= 20mA, VCx - VSx = 5.0 V
= -20mA, VCx - VSx = 5.0 V
= -3mA
Rising 3000pF Load
Falling 3000pF Load
Test Conditions
Mobile AMD Athlon™ VRM Controller
P
RODUCTION
D
0.98
Min
200
200
ATA
4.8
4.8
44
40
-6
≤
T
S
LX1676
A
HEET
≤
Typ
180
100
400
400
4.9
0.1
4.9
0.1
1.5
0.3
0.5
1.5
60
50
50
40
40
50
50
50
50
1
4
1
70°C except where
1.02
Max
500
500
0.2
0.2
60
60
6
LX1676
Units
MHz
V/V
mV
mV
mV
KΩ
KΩ
dB
nS
nS
nS
µA
nS
µA
nS
V
V
A
A
V
V
V
Page 5