FAN5068 Datasheet, PDF (7/18 Pages) Fairchild Semiconductor – DDR-1/DDR-2 plus ACPI Regulator Combo

FAN5068
PRODUCT SPECIFICATION
Electrical Specifications (continued)
Recommended operating conditions, component values per Figure 1 unless otherwise noted.
Parameter
Conditions
SS Complete Threshold
SS Complete Hysteresis
PWM Converter
Load Regulation
FB Bias Current
I_OUT from 0 to 16A
Under-Voltage Shutdown
As % of set point.
2µs noise filter
I_SNS Over-Current threshold
Over-Voltage threshold
R_ILIM = 56kΩ
As % of set point
PWM Output Driver
HDRV Output Resistance
Sourcing
Sinking
LDRV Output Resistance
Sourcing
Sinking
PGOOD (Power Good Output) and Control pins. VDDQ output
Lower Threshold
As % of set point, 2µs noise filter
Upper Threshold
As % of set point, 2µs noise filter
PGOOD Output Low
Leakage Current
VTT Regulator
I_PGOOD = 1.5mA
V_PULLUP = 5V
VDDQ IN Current
VREF IN to VTT
Differential Output Voltage
Internal Divider Gain
S0 mode, I_VTT = 0
I_VTT = 0, T_A = 25°C
I_VTT = ± 1.25A (pulsed)
VTT Current limit
VTT Leakage Current
Pulsed (300ms max.), T_A = 25°C
S3#I = LOW
VTT SNS input resistance
VTT = 0.9V
VTT PGOOD
Measured at VTT SNS
Drop-Out Voltage
1.2V LDO
Regulation
Drop-Out Voltage
External Gate Drive
Gate Drive Source Current
Gate Drive Sink Current
External Gate Drive
FB1.2 PGOOD threshold
3.3V LDO
Regulation
Drop-Out Voltage
ITT = ± 1.5A
I(1.2) from 0 to 5A
I(1.2) ≤ 5A, R_DS(ON) < 50mΩ
VCC = 4.75V
VCC = 4.75V
I(3.3) from 0 to 1.25A, VCC > 4.75V
I(3.3) ≤ 1.25A
Min.
Typ.
1.5
50
Max.
Units
V
mV
–2
+2
%
0.75 1 1.25 µA
65
75
80
%
145 170 195 µA
110 115 120 %
1.8
3
Ω
1.8
3
Ω
1.8
3
Ω
1.2
2
Ω
86
92
%
108
115 %
0.5
V
1
µA
–20
–40
0.493
±1.5
–20
80
–0.8
35
0.498
±3
110
70 mA
20 mV
40
0.503 V/V
±4
A
20 mA
kΩ
110 % VTT
REF
0.8
V
1.17 1.2 1.23 V
0.3
V
4.5
V
1.2
mA
1.2
mA
4.5
V
0.80 V
3.2 3.3 3.4
V
1.5
V
REV. 1.0.1 9/9/04
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