MIC47050 Datasheet, PDF (6/14 Pages) Micrel Semiconductor – 500mA ULDO with Low Input and Low Output Voltage

Micrel, Inc.
Typical Characteristics (Continued)
Ground Current vs.
Input Voltage
30
V_BIAS = 5.0V
25
V_OUT = 1.2V
I_OUT = 500mA
20
15
10
5
0
1.2 1.6
2
2.4 2.8 3.2 3.6
INPUT VOLTAGE (V)
1.80
1.75
1.70
1.65
1.60
1.55
1.50
1.45
1.40
1.5
Current Limit vs.
Input Voltage
V_BIAS = 5.0V
V_OUT = 1.2V
2
2.5
3
3.5
4
INPUT VOLTAGE (V)
Power Supply Ripple Rejection
(Input Voltage)
90
80
70
60
50
40
30 VBIAS = 3.6V
20 ^{VIN = 1.8V ± 300mV}
V_OUT = 1.2V
10
I_OUT = 500mA
0
0.01
0.1
1
10
100
Frequency (kHz)
1000
Ground Current vs.
Temperature
7.00
6.75
6.50
6.25
6.00
5.75
5.50
5.25
5.00
4.75
4.50
4.25
4.00
-40 -20
V_BIAS = 3.6V
V_IN = 1.8V
V_OUT = 1.2V
I_OUT = 500mA
0 20 40 60 80 100 120
TEMPERATURE (°C)
Current Limit vs.
Temperature
1.90
1.85
1.80
1.75
1.70
1.65
1.60
1.55
1.50
1.45
1.40
1.35
1.30
-40 -20
V_BIAS = 3.6V
V_IN = 1.8V
V_OUT = 1.2V
0 20 40 60 80 100 120
TEMPERATURE (°C)
Power Supply Ripple Rejection
(Bias Voltage)
90
80
70
60
50
40
30 VBIAS = 3.6V ± 300mV
20 ^{VIN = 1.8V}
10 ^{VOUT = 1.2V}
I_OUT = 500mA
0
0.01
0.1
1
10
100
Frequency (kHz)
1000
MIC47050
Output Voltage vs.
Output Current
1.208
1.206
1.204
1.202
1.200
1.198
1.196
1.194
1.192
1.190
V_BIAS = 3.6V
V_IN = 1.8V
0
100 200 300 400 500
OUTPUT CURRENT (mA)
Output Voltage vs.
Temperature
1.220
1.215
1.210
1.205
1.200
1.195
1.190
1.185
V_BIAS = 3.6V
V_IN = 1.8V
I_OUT = 100µA
1.180
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
Output Noise
10
1
0.1
V_BIAS = 3.6V
0.01 ^{VIN = 1.8V}
V_OUT = 1.2V
Noise (10Hz-100kHz) = 56.19µV_RMS
0.001
0.01 0.1
1
10 100
FREQUENCY (kHz)
1000
March 2010
6
M9999-032310-A