LM27262 National Semiconductor Corporation, LM27262 Datasheet - Page 7

• Manufacturer Part Number: LM27262
• Description: Intel Cpu Core Voltage Regulator Controller For VRD10 Compatible PCS
• Manufacturer: National Semiconductor Corporation

REFERENCE VOLTAGE
STANDARD OFFSET PROGRAMMING INPUTS: VPROG, VSTDOS, IREF
LOAD LINE SLOPE ADJUSTMENT (SLADJ), CURRENT LIMIT (CLIMADJ)
CURRENT SENSE LINES VILx AND VIHx
CORE VOLTAGE ERROR AMPLIFIER
Symbol
Electrical Characteristics
DAC Voltage Accuracy
with Internal VREF
DAC Voltage Accuracy
with External VREF =
1.225V
Internal Reference
Voltage
VREF Output Load
Regulation
VREF Line Regulation V
External VREF Voltage REFINT=LOW, see LM27201 Electrical Specs.
External VREF
Compensating Offset
(applied internally)
IREF Output Voltage
VOS
(VSTDOS-VPROG)
SLADJ2 Input Source
Current
CLIMADJ Input Source
Current
Load Line Slope (LLS) SLADJ divider 41.2k/8.45k, R
LLS Maximum Error
Current Sense
Amplifier Input Offset
Voltage
Current Sense
Differential Voltage
Range
Current Sense Input
Source Current
Differential Input
Resistance
VCORE Input Bias
Current
COMP Output Sink
Current
COMP Output Source
Current
VFB Input Bias Source
Current
Parameter
VID codes from 1.5625V to 1.6000V
VID codes from 0.8375V to 1.1000V
VID codes from 1.1125V to 1.5500V
VID codes: 1.5500V & 1.6000V
VID codes: 0.8375V & 1.0000V
VID codes: 1.1000V, 1.2000, 1.3000, 1.4000 &
1.5000
I
REFINT=LOW
100 µA Load Current
IREF = 80.4 µA, R
SLADJ2 connected to GND
V
Nominal LLS = -1.3mV/A, I
Isense diff. input = 20mV; not switching
Common Mode Voltage = 1.30V
Over full VID range
VIHx = VILx = 100mV
Common Mode Voltage = 1.3V
VFB = 1.4V
Vcomp = 2.5V VFB = 5V
Vcomp = 4V VFB = 0V
VFB = 1.4V VDAC = 1.3V
VREF
CC
CLIMADJ
5V = (4.65V to 5.5V), I
from 0 to 50 µA
(Note 5)
= VREF
,
(Note 6) V
Conditions
OS
= 309
VREF
SLADJ1
CC
7
SENSE
5V = 5V unless otherwise specified. (Continued)
= 50uA
= 50 µA,
= 2mΩ
1.210
Min
-0.6
-0.8
-1.0
-1.2
-0.5
-0.8
±
±
±
0-100
1.235
1.225
1.400
-0.15
±
±
±
±
±
0.07
Typ
-2.5
-1.3
100
-25
0.3
0.5
0.75
0.15
0.06
10
14
0.9
0.9
0.1
0.2
0.5
2
1
1.260
Max
0.75
0.8
1.0
1.2
0.5
0.8
1.0
25
www.national.com
Unit
mΩ
mΩ
mV
mV
mV
mV
mV
mV
mA
µA
µA
µA
kΩ
µA
µA
µA
%
%
%
%
%
%
V
V
V