?2005 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN5069 Rev. 1.1.5
6
Electrical Characteristics (Continued)
Unless otherwise noted, V
CC
= 5V, T
A
= 25癈, using circuit in Figure 1.
The " denotes that the specifications apply to the full ambient operating temperature range. See Notes 4 and 5.
Notes:
4. All limits at operating temperature extremes are guaranteed by design, characterization, and statistical quality
control.
5. AC specifications guaranteed by design/characterization (not production tested).
6. For a case when V
CC
is higher than the typical 5V V
CC;
voltage observed at VCC pin when the internal shunt
regulator is sinking current to keep voltage on VCC pin constant.
7. Test Conditions: V
LDO_IN
= 1.5V and V
LDO_OUT
= 1.2V
Symbol
Parameter
Conditions
Min.
Typ.
Max. Unit
Protection/Disable
I
LIM
ILIMIT Source Current
9
10
11
糀
I
SWPD
SW Pull-down Current
SW = 1V, EN = 0V
2
mA
V
UV
Under-Voltage Threshold As % of set point; 2糞 noise fil-
ter
"
65
75
80
%
V
OV
Over-Voltage Threshold
As % of set point; 2糞 noise fil-
ter
"
110
115
120
%
TSD
Thermal Shutdown
160
癈
Enable Threshold Voltage Enable Condition
"
2.0
V
Enable Threshold Voltage Disable Condition
"
0.8
V
Enable Source Current
V
CC
= 5V
50
糀
LDO
(7)
V
LDOREF
Reference Voltage (mea-
sured at FBLDO pin)
T
A
= 0癈 to 70癈
"
775
800
825
mV
T
A
= -40癈 to 85癈
"
770
800
830
mV
Regulation
0A d I
LOAD
d 5A
"
1.17
1.2
1.23
V
V
LDO_DO
Drop out Voltage
I
LOAD
d 5A and R
DS-ON
< 50m?/DIV>
0.3
V
External Gate Drive
V
CC
= 4.75V
"
4.5
V
V
CC
= 5.6V
"
5.3
V
Gate Drive Source Current
1.2
mA
Gate Drive Sink Current
400
糀
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