MIC47050_12 Datasheet, PDF (6/16 Pages) Micrel Semiconductor – 500mA ULDO™ with Low Input and Low Output Voltage

Micrel, Inc.
Typical Characteristics
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
Output Voltage vs.
Input Voltage
V_BIAS = 5.0V
V_OUT = 1.8V
I_OUT = 500mA
1
2
3
4
INPUT VOLTAGE (V)
Output Voltage vs.
Bias Voltage
2.2
2.0 I_OUT = 100mA
1.8
1.6
1.4
1.2
I_OUT = 500mA
1.0
0.8
0.6
0.4
V_IN = 2.5V
0.2
V_OUT = 1.8V
2
3
4
5
BIAS VOLTAGE (V)
440
420
400
380
360
340
320
300
280
260
240
3
Bias Current vs.
Bias Voltage
V_IN = 1.8V
I_OUT = 1mA
3.5
4
4.5
5
5.5
BIAS VOLTAGE (V)
Input Dropout Voltage vs.
Output Current
50
45
40
35
30
25
20
15
10
5
0
0
V_BIAS = 5.0V
V_OUT = 1.2V
100
200
300
400
500
OUTPUT CURRENT (mA)
Bias Dropout Voltage vs.
Output Current
2.0
1.8
1.6 _{VOUT = 2.0V}
1.4
1.2
1.0
V_OUT = 1.2V
0.8
0.6
0.4
0.2
V_IN = 2.5V
0.0
0
100 200 300 400 500
OUTPUT CURRENT (mA)
340
338
336
334
332
330
328
326
324
322
320
0
Bias Current vs.
Output Current
V_BIAS = 3.6V
V_IN = 1.8V
V_OUT = 1.2V
100 200 300 400 500
OUTPUT CURRENT (mA)
MIC47050
Input Dropout Voltage vs.
Temperature
70
60 IOUT = 500mA
50
40
30 _{VBIAS = 3.6V}
20 VOUT = 1.2V
I_OUT = 100mA
10
0
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
Bias Dropout Voltage vs.
Temperature
1.9
1.8
1.7 _{VOUT = 2.0V}
1.6
1.5
1.4
1.3
1.2 _{VOUT = 1.2V}
1.1
1.0
0.9
V_IN = 2.5V
I_OUT = 500mA
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Bias Current vs.
Temperature
400
380
360
340
320
300
280
260
240
-40 -20
V_BIAS = 3.6V
V_IN = 1.8V
V_OUT = 1.2V
0 20 40 60 80 100 120
TEMPERATURE (°C)
April 2012
6
M9999-040312-B