MIC2245 Datasheet, PDF (6/14 Pages) Micrel Semiconductor – 4MHz PWM Synchronous Buck Regulator with LDO Standby Mode

Micrel, Inc.
Typical Characteristics - LDO Mode
Current Limit
vs. Supply Voltage
140
120
100
80
60
40
20
02.7
LowQ = 0V
3.4 4.1 4.8 5.5
SUPPLY VOLTAGE (V)
Dropout Voltage
vs. Temperature
80
70
60
50
40
30
20
V_OUT = 3.3V
10
I_OUT = 25mA
LowQ = 0V
0-40 _{-20 0 20 40 60 80 100 120}
TEMPERATURE (°C)
Dropout Voltage
vs. Temperature
40
35
30
25
20
15
10
V_OUT = 3.3V
5
I_OUT = 10mA
LowQ = 0V
0-40 _{-20 0 20 40 60 80 100 120}
TEMPERATURE (°C)
Enable Threshold Voltage
vs. Supply Voltage
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
LowQ = 0V
0.52.7
3.4
4.1
4.8
5.5
SUPPLY VOLTAGE (V)
MIC2245
Dropout Voltage
vs. Temperature
160
140
120
100
80
60
40
V_OUT = 3.3V
20
I_OUT = 50mA
LowQ = 0V
0-40 _{-20 0 20 40 60 80 100 120}
TEMPERATURE (°C)
Dropout Voltage
vs. Temperature
9
8
7
6
5
4
3
2
V_OUT = 3.3V
1
I_OUT = 1mA
LowQ = 0V
0-40 _{-20 0 20 40 60 80 100 120}
TEMPERATURE (°C)
January 2006
6
M9999-012406
www.micrel.com