Advanced Analog Technology, Inc.
AAT1203
Note 1：The device deteriorates with increase in ambient temperature,
T
C
. See Thermal Information section.
Recommended Operating Conditions
Parameter
5V Main Supply Input, VCC50
5V Standby Supply Input, VSB50
3.3V Auxiliary Supply Input, AUX33
Load Capacitance, C
L
Load Current, I
L
Ambient Temperature, T
C
Min
4.5
4.5
3.0
4.23
Typ
-
-
-
4.70
Max
5.5
5.5
3.6
5.17
Unit
V
V
V
µF
0
0
-
-
250
70
mA
℃
Electrical Characteristics Over Recommended Operating Free-Air
Temperature,
T
C
= 0
℃
to 70
℃
,
C
L
= 4.7µF (Unless Otherwise Specified)
Parameter
5V Inputs
3.3V Output
Line Regulation Voltage
Load Regulation Voltage
Quiescent Supply Current
I
AUX
Out33 Load Current
Output Current Limit
Thermal Shutdown
(Note 2)
Symbol
VCC50
VSB50
OUT33
∆
V
O
(
∆
VI
)
∆
V
O
(
∆
IO
)
I
50
I
AUX
I
L33
I
LIMIT
T
TSD
T
hys
C
L
I
Ikg
(
REV
)
V
LO
V
HI
R
(SWITCH )
R
θ
JA
Test Condition
I
out 33
= 250mA
VSB50 or VCC50 = 4.5V to 5.5V
20 mA
＜
I
L
＜
250 mA
From VCC50 VSB50 terminals,
I
L
= 0mA to 250mA
From AUX33 terminal, I
L
= 0A
Out33 Output short to 0V
Min
4.5
3.135
-
-
-
-
0.25
-
150
-
Typ
5.0
3.300
2
40
1.0
1.0
-
-
-
15
4.7
-
4.05
4.3
-
100
70
Max Unit
5.5
3.465
-
-
3.0
3.0
-
1.5
180
℃
V
V
mV
mV
mA
mA
A
Thermal Hysteresis
(Note 2)
Load Capacitance
Reverse Leakage Output
Current
Threshold Voltage, Low
Threshold Voltage, High
Auxiliary Switch
Resistance
Thermal Impedance,
Junction-to-Ambient
(Note 3)
-
-
50
4.25
4.5
0.4
-
-
μ
F
μ
A
Minimal ESR to insure stability of regulated
output
Tested for grounded input
AUX33, VSB50 or VCC50 = GND,
Out33 = 3.3V
VSB50 or VCC50
↓
VSB50 or VCC50
↑
VSB50 = VCC50 = 0V,
AUX33 = 3.3V, I
L
= 150mA
Without copper for heat spreading
With copper for heat spreading
-
-
3.85
4.1
-
-
-
V
V
Ω
℃
/W
–
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–
–
Advanced Analog Technology, Inc
.
–
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V 1.
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
