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SI91871_05 Datasheet, PDF (5/10 Pages) Vishay Siliconix – 300-mA Ultra Low-Noise LDO Regulator With Discharge Option | |||
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Si91871
Vishay Siliconix
TYPICAL CHARACTERISTICS (INTERNALLY REGULATED, 25_C UNLESS NOTED)
Normalized Output Voltage vs. Load Current
0.30
0.15
VIN = VOUT(nom) + 1 V
0.00
â0.15
â0.30
â0.45
0.4
0.2
â0.0
â0.2
â0.4
â0.6
Normalized VOUT vs. Temperature
VIN = VOUT(nom) + 1 V
IOUT = 0 mA
IOUT = 75 mA
IOUT = 150 mA
IOUT = 300 mA
â0.60
â0.8
â0.75
0
50
100 150 200 250 300
Load Current (mA)
â1.0
â40
â15
10
35
60
85
Ambient Temperature (_C)
GND Current vs. Load Current
150
VOUT = 3.0 V
VIN = 4.0 V
85_C
125
25_C
100
â40_C
75
50
0
50
100 150 200 250 300
Load Current (mA)
No Load GND Pin Current vs. Input Voltage
300
250
200
150
85_C
25_C
100
â40_C
50
0
2
3
4
5
6
7
Input Voltage (V)
Power Supply Rejection
0
CIN = 1 mF
COUT = 1 mF
ILOAD = 150 mA
â20 VOUT = 3.0 V
â40
â60
â80
10
100
1000 10000 100000 1000000
Frequency (Hz)
Document Number: 72012
S-51147âRev. F, 20-Jun-05
Output Short Circuit Current vs. Temperature
750
VOUT = 2.6 V
725
700
675
650
625
600
â40
â15
10
35
60
85
AmbientTemperature (_C)
www.vishay.com
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