MIC5319 Datasheet, PDF (5/10 Pages) Micrel Semiconductor – 500mA uCap Ultra-Low Dropout, High PSRR LDO Regulator

MIC5319
Dropout Voltage
80
70
60
50
40
30
20
Iload = 150mA
10
Vout = 2.8V
Cout = 2.2uF
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (C)
Short Circuit Current
700
600
500
400
300
200
100
3
Iload = 100uA
Vout = 2.8V
Vin = Vout + 1V
Cout = 2.2uF
3.5 4 4.5 5 5.5 6
INPUT VOLTAGE (V)
Output Noise Spectral Density
10
1
0.1
Iload = 50Ω
Vout = 2.8V
0.01 _{Vin = 4.45V}
Cout = 2.2uF
0.001 ^{Cbyp = 0.01uF}
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
Dropout Voltage
250
200
150
100
50
0
-40 -20 0
Iload = 500mA
Vout = 2.8V
Cout = 2.2uF
20 40 60 80 100 120
TEMPERATURE (C)
Output Voltage vs.
Temperature
3
2.95
2.9
2.85
2.8
2.75
2.7
2.65
2.6
-40 -20 0
Iload = 100uA
Vout = 2.8V
Vin = Vout + 1V
20 40 60 80 100 120
TEMPERATURE (C)
Micrel
200
180
160
140
120
100
80
60
40
20
0
0
Dropout Voltage
Vout = 2.8V
Cout = 2.2uF
100 200 300 400 500
OUTPUT CURRENT (mA)
Enable Threshold vs.
Temperature
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
-40 -20 0
Iload = 100uA
Vout = 2.8V
Vin = Vout + 1V
Cout = 2.2uF
20 40 60 80 100 120
TEMPERATURE (C)
October 2004
5
M9999-100604