LM27262 National Semiconductor Corporation, LM27262 Datasheet - Page 8

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

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OSCILLATOR
SOFT START AND SOFT STOP (SOFTCAP), VIDSLEW
DELAY FUNCTION
PWRGOOD, UVP, OVP FAULT LATCHING THRESHOLD
V
Symbol
VPGH%
VPGL%
RON
Electrical Characteristics
Error Amp Input Offset
Voltage
Error Amplifier Open
loop DC Gain
Active Mode Switching
Frequency
Minimum On-Time
Maximum Duty Cycle
SOFTCAP Charge
Current
SOFTCAP Discharge
Resistor
DELAY Source/Charge
Current
DELAY Discharge
Current
DELAY Threshold
Voltage
PWRGD OVP
Threshold
PWRGD UVP
Threshold
PWRGD Output Low
Voltage
PWRGD Leakage
Current
VCORE OVP Latch
Threshold
VCORE UVP Latch
Threshold
Low Logic Level Input
Voltage
High Logic Level Input
Voltage
Low-to-High Voltage
Threshold
V
Hysteresis
V
V
RON
RON
RON
Parameter
Threshold
Leakage Current V
Assertion Delay
VDAC = 1.3V
VFB = 1.3V, Comp Pin open
Measured from SOFTCAP pin to GND pin
V
V
V
Difference of VCORE pin above EA int.
reference voltage measured at VFB pin in test
mode; VID = 110110 = 1.3V, V
Percentage of VCORE pin below EA int.
reference voltage measured at VFB pin in test
mode; VID = 110110 = 1.3V, V
PWRGD sinking 4mA (open drain)
PWRGD pulled up to 5.5V
Difference of VCORE pin above EA int.
reference voltage measured at VFB pin in test
mode; VID = 110110 = 1.3V, V
Percentage of VCORE pin below EA int.
reference voltage measured at VFB pin in test
mode; VID = 110110 = 1.3V, V
V
Delay of power on after VRON transition
(SOFTCAP = 0.01µF)
DELAY
DELAY
DELAY
VRON
VRON
= 3.3V
= GND
(Note 5)
= 0V
= 5V
rising
,
(Note 6) V
Conditions
CC
8
5V = 5V unless otherwise specified. (Continued)
OS
OS
OS
OS
= 25mV
= 25mV
= 25mV
= 25mV
Min
235
2.2
1.2
86
86
9
0.23
0.15
0.23
0.95
Typ
730
300
120
3.2
1.4
0.1
±
75
50
12
89
89
50
1
1
5
2
1
Max
345
4.4
0.3
15
92
10
92
20
-
-
msec
Unit
kHz
V/V
mV
mA
kΩ
µA
µA
µA
µA
nA
ns
%
%
%
V
V
V
V
V
V
V
V