SI91871_05 Datasheet, PDF (6/10 Pages) Vishay Siliconix – 300-mA Ultra Low-Noise LDO Regulator With Discharge Option

Si91871
Vishay Siliconix
TYPICAL CHARACTERISTICS (INTERNALLY REGULATED, 25_C UNLESS NOTED)
Dropout Voltage vs. Load Current
350
V_OUT = 3.0 V
300
250
200
150
100
50
V_IN − V_OUT Transfer Characteristic
3.0
V_OUT = 3.0 V
2.5
2.0
1.5
1.0
0.5
0
0
60
120
180
240
300
I_{LOAD (mA)}
Dropout Voltage vs. Temperature
350
V_OUT = 3.0 V
300
I_OUT = 300 mA
250
200
150
I_OUT = 150 mA
100
50
0
−50 −25
I_OUT = 75 mA
0 25 50 75 100
Junction Temperature (_C)
I_OUT = 10 mA
I_OUT = 0 mA
125 150
0.0
0
1
2
3
4
5
6
V_IN (V)
Dropout Voltage vs. V_OUT
400
350
300
I_OUT = 300 mA
250
200
150
I_OUT = 75 mA
100
I_OUT = 150 mA
50
I_OUT = 10 mA
0
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
V_OUT
www.vishay.com
6
Document Number: 72012
S-51147—Rev. F, 20-Jun-05