Notebook CPU Step-Down Controller for Intel
-
Mobile Voltage Positioning (IMVP II)
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V+ = 15V, V = V = SKP/SDN = 5V, V
= 1.25V, T = 0°C to +85°C, unless otherwise noted.)
A
CC
DD
OUT
PARAMETER
Reference Load Regulation
REF Sink Current
CONDITIONS
MIN
TYP
MAX UNITS
I
= 0µA to 50µA
0.01
2.05
V
REF
REF in regulation
10
µA
FAULT PROTECTION
Overvoltage Trip Threshold
Measured at FB
1.95
2.00
10
V
Overvoltage Fault Propagation
Delay
FB forced 2% above trip threshold
µs
Output Undervoltage Fault
Protection Threshold
With respect to unloaded output voltage
FB forced 2% below trip threshold
65
70
10
75
%
Output Undervoltage Fault
Propagation Delay
µs
Output Undervoltage Fault
Blanking Time
256
100
From SKP/SDN signal going high, clock speed set by R
TIME
clks
T
T
= +25°C to +85°C
= 0°C to +85°C
90
85
110
115
65
A
Current-Limit Threshold Voltage
(Positive, Default)
GND - LX, ILIM = V
GND - LX
CC
CC
mV
mV
A
ILIM = 0.5V
35
50
Current-Limit Threshold Voltage
(Positive, Adjustable)
ILIM = REF (2V)
165
200
230
Current-Limit Threshold Voltage
(Negative)
LX - GND, ILIM = V
GND - LX
-140
-117
4
-95
mV
mV
Current-Limit Threshold Voltage
(Zero Crossing)
Current-Limit Default
Switchover Threshold
3
V
CC
- 1 V - 0.4
V
°C
V
CC
Thermal Shutdown Threshold
Hysteresis = 10°C
150
V
CC
Undervoltage Lockout
Rising edge, hysteresis = 20mV, PWM disabled below
this level
4.1
4.4
Threshold
VGATE Lower Trip Threshold
VGATE Upper Trip Threshold
VGATE Propagation Delay
VGATE Output Low Voltage
VGATE Leakage Current
GATE DRIꢁERS
Measured at FB with respect to unloaded output voltage
Measured at FB with respect to unloaded output voltage
FB forced 2% outside VGATE trip threshold
-12
+8
-10
-8
%
%
µs
V
+10
10
+12
I
= 1mA
0.4
1
SINK
High state, forced to 5.5V
µA
DH Gate Driver On-Resistance
BST - LX forced to 5V
DL, high state (pullup)
DL, low state (pulldown)
1.0
1.0
0.4
3.5
3.5
1.0
Ω
Ω
DL Gate Driver On-Resistance
DH Gate-Driver Source/Sink
Current
DH forced to 2.5V, BST - LX forced to 5V
DL forced to 2.5V
1.6
4
A
A
DL Gate-Driver Sink Current
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3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
