SC1532 Datasheet, PDF (5/9 Pages) Semtech Corporation – 400mA SmartLDOTM with Internal Pass MOSFET

400mA SmartLDO^TM with Internal Pass
MOSFET
SC1532
January 3, 2000
TYPICAL CHARACTERISTICS
Quiescent Current (I_Q1) vs.
Junction Temperature vs. VIN2
2.0
VIN2 = 3.6V
1.8
1.6
1.4
1.2
VIN2 = 0V
1.0
0.8
0.6
0.4
VIN1 = 5V
0.2 _{IO = 0mA}
0.0
-25
0
25
50
75
T_J (°C)
100
125
LDO Output Voltage vs. Junction
Temperature vs. Output Current
3.310
VIN1 = 5V
3.305 ^{VIN2 = 3.3V}
3.300
I_O = 0mA
3.295
I_O = 200mA
3.290
3.285
I_O = 400mA
3.280
3.275
3.270
-25
0
25
50
75
100
125
T_J (°C)
LDO Load Regulation vs.
Junction Temperature
0.40
VIN1 = 5V
0.35 ^{VIN2 = 3.3V}
I_O = 20mA to 400mA
0.30
0.25
0.20
0.15
0.10
0.05
0.00
-25
0
25
50
75
100
125
T_J (°C)
Quiescent Current (I_Q2) vs.
Junction Temperature vs. VIN1
800
VIN1 = 0V
700
600
VIN1 = 5.5V
500
400
300
200
100 VIN2 = 3.3V
I_O = 0mA
0
-25
0
25
50
75
T_J (°C)
100
125
LDO Line Regulation vs.
Junction Temperature
0.40
VIN1 = 4.3V to 5.5V
0.35 IO = 400mA
0.30
0.25
0.20
0.15
0.10
0.05
0.00
-25
0
25
50
75
100
125
T_J (°C)
LDO Current Limit vs.
Junction Temperature
1200
1000
VIN1 = 5V
VIN2 = 0V
VO = 0V
800
600
400
200
0
-25
0
25
50
75
100
125
T_J (°C)
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