AAT1203 Datasheet, PDF (3/16 Pages) Advanced Analog Technology, Inc. – 250-mA MULTI-INPUT LOW-DROPOUT REGULATOR WITH V-AUX SWITCH

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 Typ Max Unit
4.5 - 5.5
V
4.5 - 5.5
V
3.0 - 3.6
V
4.23 4.70 5.17 µF
0
- 250 mA
0
- 70
Electrical Characteristics Over Recommended Operating Free-Air
Temperature, T_C = 0 to 70 ,C_L = 4.7µF (Unless Otherwise Specified)
Parameter
Symbol
Test Condition
Min
Typ
5V Inputs
VCC50
VSB50
4.5
5.0
3.3V Output
Line Regulation Voltage
OUT33 I_out33 = 250mA
∆V_{O(∆VI) VSB50 or VCC50 = 4.5V to 5.5V}
3.135
-
3.300
2
Load Regulation Voltage ^∆V_O(∆IO) 20 mA I _L 250 mA
-
40
From VCC50 VSB50 terminals,
Quiescent Supply Current
I ₅₀
I _L = 0mA to 250mA
-
1.0
I _AUX
I_AUX From AUX33 terminal, I _L = 0A
-
1.0
Out33 Load Current
I _L33
0.25
-
Output Current Limit
Thermal Shutdown
(Note 2)
Thermal Hysteresis
(Note 2)
I _LIMIT
T_TSD
T_hys
Out33 Output short to 0V
-
-
150
-
-
15
Load Capacitance
C_L
Minimal ESR to insure stability of regulated
output
-
4.7
Reverse Leakage Output
Current
I_{Ikg(REV )}
Tested for grounded input
AUX33, VSB50 or VCC50 = GND,
Out33 = 3.3V
-
-
Threshold Voltage, Low
V_LO VSB50 or VCC50
3.85
4.05
Threshold Voltage, High
Auxiliary Switch
Resistance
Thermal Impedance,
V_HI
R _(SWITCH)
VSB50 or VCC50
VSB50 = VCC50 = 0V,
AUX33 = 3.3V, I _L = 150mA
R _θJA Without copper for heat spreading
4.1
4.3
-
-
-
100
Junction-to-Ambient
(Note 3)
With copper for heat spreading
-
70
Max Unit
5.5 V
3.465 V
- mV
- mV
3.0 mA
3.0 mA
-
A
1.5
180
-
-
F
50
A
4.25 V
4.5 V
0.4 Ω
-
/W
-
–
–
– Advanced Analog Technology, Inc. –
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