ncp5389 ON Semiconductor, ncp5389 Datasheet - Page 10

• Manufacturer Part Number: ncp5389
• Description: 2/3 Phase Buck Controller For Vr11 Pentium Iv Processor Applications
• Manufacturer: ON Semiconductor

4. Guaranteed by design. Not tested in production.
ELECTRICAL CHARACTERISTICS
(0°C < T
PWM OUTPUTS
GATE DRIVER ENABLE (DRVON)
VR_RDY (POWER GOOD) OUTPUT
Output High Voltage
Output Low Voltage
Rise Time
Fall Time
Output Impedance – LO State
G2 Gate Pin Source Current during
Phase Detect
Phase Detection Period
G2 Phase Detect Threshold
Resistance
Output High Voltage
Output Low Voltage
Rise Time
Fall Time
Internal Pulldown Resistance
Saturation Voltage
Rise Time
Output Voltage at Power-up (Note 4)
High – Output Leakage Current
Upper Threshold Voltage
Rising Delay
Falling Delay
A
< 70°C; 0°C < T
Parameter
J
< 85°C; 10.8 V < V
Sourcing 500 mA
Sinking 500 mA
C
C
0.7 V
Resistance to GND (Gx = LO)
Sourcing 500 mA
Sinking 500 mA
C
DVo = 10% to 90%
C
DVo = 10% to 90%
V
I
External pullup of 1.0 kW to
1.25 V, C
DVo = 10% to 90%
External VR_RDY pullup
resistor of 2.0 kW to 5.0 V,
t
100 ms ≤ t
VR_RDY = 5.5 V via 1.0 K
VCORE increasing,
DAC = 1.3 V
VCORE increasing
VCORE decreasing
SINK
R_VCC
CC
L
L
L
L
= 20 pF, DVo = 0.3 to 2.0 V
= 20 pF, DVo = Vmax to
(PCB) = 20 pF,
(PCB) = 20 pF,
CC
< UVLO Threshold
= 10 mA
< 13.2 V; All DAC Codes; C
Test Conditions
≤ 3 x t
LOAD
R_VCC
R_5V
= 20 pF,
http://onsemi.com
≤ 20 ms
,
NCP5389
10
VCC
Min
= 0.1 mF, F
3.3
4.0
0.3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
SW
= 400 kHz, unless otherwise stated)
1.40
Typ
300
4.0
5.3
5.0
25
10
10
50
70
50
50
25
25
70
-
-
-
-
-
Max
100
200
140
150
4.7
1.0
5.5
0.4
1.0
1.0
2.0
-
-
-
-
-
-
-
-
-
mV below
Units
DAC
mV
mV
kW
kW
ms
ns
ns
mA
ms
ns
ns
ns
mA
ms
V
W
V
V
V