lx1676 Microsemi Corporation, lx1676 Datasheet - Page 4

• 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.
REGULATOR
IC Supply Current
Low Side Driver Operating
Current
High Side Driver Operating
Current
ERROR AMPLIFIER: PHASE 1
Input Offset Voltage
Input Bias Current
DC Open Loop Gain
Input Common Mode Range
Output Voltage Swing
Unity Gain Bandwidth
DIFFERENTIAL AMPLIFIER
Input Offset Voltage
Gain
Common Mode Rejection Ratio
Input Resistance
Input Common Mode Range
Source / Sink Current
Output Voltage Swing
Unity Gain Bandwidth
Slew Rate
OSCILLATOR
Maximum Clock Frequency
Minimum Clock Frequency
Frequency Stability
PWM OUTPUT
Maximum Duty Cycle
Minimum Pulse Width
Dead Time
Ramp Amplitude
PHASE 2 INTEGRATING AMPLIFIER
Input Offset Voltage
DC Open Loop Gain
Output Voltage Swing
Unity Gain Bandwidth
TM
Parameter
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
V
V
CMRR
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
V
V
Symbol
V
V
DFOUT(MAX)
DFOUT (MIN)
t
UGBW
UGBW
UGBW
I
PWM(MIN)
DC
I
I
EO1(MAX)
V
EO2(MAX)
Q(VCCL)
EO1(MIN)
EO2(MIN)
Q(VCC)
Q(VCx)
V
V
V
V
f
V
I
A
f
R
SR
RAMP
MAX
EA1
MIN
ICM
CM
OS
OS
DA
OS
IN
MAX
DA
Integrated Products Division
ENA = VCC, FB+ = FB-
ENA = GND
ENA = VCC, FB+ = FB-
ENA = VCC, FB+ = FB-
Common Mode Voltage (V
CMRR > 50dB
I
I
V
0.8V < V
Measured at FB+ Input
V
I
I
R
R
During Transient Correction Switching
Transient Correction Not Switching
3000pF Load
3000pF Load at 50% of VCCL
VIN = 6V
VIN = 12
VIN = 24 V
V
I
I
EA1
EA1
DFOUT
EA1
EA2
EA2
CM
DFOUT
CM
PWM
PWM
=1.4V
=1.4V
= 2mA
= -20uA
= -20uA
= 2mA
= -20uA
®
Microsemi
=10kΩ
=50kΩ
= 2mA
= 0V
CM
< 2.5V
Test Conditions
Mobile AMD Athlon™ VRM Controller
CM
P
) = 1.4V
RODUCTION
D
-100
0.99
Min
180
ATA
0.8
0.9
60
40
50
-6
-6
-6
1
0
≤
T
S
LX1676
A
HEET
0.15
0.70
1.40
2.80
0.15
≤
Typ
200
0.5
4.0
4.0
0.2
4.0
70
20
65
30
10
60
80
70
20
5
2
1
5
5
1
4
70°C except where
1.01
Max
100
220
100
200
2.5
0.5
1.1
0.5
50
9
1
1
4
6
6
3
6
LX1676
M
Units
MHz
MHz
V/µs
MHz
MHz
KHz
V/V
mA
mA
mA
mV
mV
mA
KΩ
µA
nA
dB
dB
nS
nS
dB
%
%
V
V
V
V
V
V
V
Page 4