SI91821 Datasheet, PDF (8/10 Pages) Vishay Siliconix – Micropower 300-mA CMOS LDO Regulator With Error Flag

Si91821
Vishay Siliconix
TYPICAL CHARACTERISTICS (INTERNALLY REGULATED, 25_C UNLESS NOTED)
Dropout Voltage vs. Temperature
180
V_OUT = 2.775 V
I_OUT = 300 mA
150
120
I_OUT = 200 mA
90
60
30
0
−50 −25
0 25 50 75 100
Junction Temperature (_C)
I_OUT = 10 mA
I_OUT = 0 mA
125 150
Normalized Output Voltage vs. Load Current
0.30
0.15
0.00
−0.15
−0.30
−0.45
−0.60
−0.75
0
50 100 150 200 250 300 350
Load Current (mA)
Normalized V_OUT vs. Temperature
0.6
0.4
0.2
−0.0
−0.2
−0.4
I_OUT = 0 mA
−0.6
−0.8
−1.0
−1.2
−1.4
I_OUT = 100 mA
I_OUT = 300 mA
−1.6
−40 −20
0 20 40 60 80 100 120 140
Junction Temperature (_C)
Dropout Voltage vs. V_OUT
180
160
140
120
100
I_OUT = 300 mA
80
60
I_OUT = 200 mA
40
20
I_OUT = 10 mA
0
2.0
2.5
3.0
3.5
4.0
4.5
5.0
V_OUT
No Load Current vs. Input Voltage
250
GND Pin Current vs. Temperature and Load
1500
200
1200
150
85_C
100
25_C
−40_C
50
0
0
1
2
3
4
5
6
7
Input Voltage (V)
www.vishay.com
8
900
I_OUT = 300 mA
600
I_OUT = 200 mA
300
I_OUT = 0 mA
0
−40 −20
0 20 40 60 80 100 120 140
Junction Temperature (_C)
Document Number: 71614
S-51147–Rev. E, 20-Jun-05