MIC2808 Datasheet, PDF (8/18 Pages) Micrel Semiconductor – RF PA Power Management IC 2MHz, 600mA DC/DC w/DAC Input and Bypass Switch, Dual Low Noise 200mA/30mA LDO Regulators

Micrel, Inc.
Typical Characteristics (LDO1/LDO2)
LDO2 Dropout Voltage
vs. Output Current
35
30
25
20
15
10
5
V_OUT = 2.85V
036 _{91 21 51 82 12 42 73 0}
OUTPUT CURRENT (mA)
Power Supply Rejection
Ratio LDO2 [I _OUT=20mA]
90
80
70
60
50
40
30
V_IN = 3.6V
20 V_OUT = 2.85V
10
I_OUT = 20mA
C_OUT = 1µF
00.01 0.1 11
0 100
FREQUENCY (kHz)
1000
LDO1 Ground Current
vs. Output Current
250
240
230
220
210
20003
V_IN = 3.6V
V_OUT = 2.85V
06 09 0 120 150
OUTPUT CURRENT (mA)
Power Supply Rejection
Ratio LDO1 [I _OUT=5mA]
90
80
70
60
50
40
30
V_IN = 3.6V
20 V_OUT = 2.85V
10
I_OUT = 5mA
C_OUT = 2.2µF
00.01 0.1 11
0 100
FREQUENCY (kHz)
1000
LDO2 Load Regulation
2.854
2.852
2.850
2.848
2.84605
V_IN = 3.6V
C_OUT = 1µF
10 15 20 25 30
OUTPUT CURRENT (mA)
Power Supply Rejection
Ratio LDO2 [I _OUT=1mA]
100
90
80
70
60
50
40
30 _{VIN = 3.6V}
20 ^VOUT ^{= 2.85V}
10
I_OUT = 1mA
C_OUT = 1µF
00.01 0.1 11
0 100
FREQUENCY (kHz)
1000
LDO1 Ground Current
vs. Temperature
310
290
270
250
230
210
190
170
150-40 _{-20 0}
V_IN = 3.6V
V_OUT = 2.85V
I_OUT = 150mA
20 40 60 80 100 120
TEMPERATURE (°C)
Power Supply Rejection
Ratio LDO1 [I _OUT=100mA]
100
90
80
70
60
50
40
30
20 VIN = 3.6V
10
V_OUT = 2.85V
C_OUT = 2.2µF
00.1
1
10
100
FREQUENCY (kHz)
1000
MIC2808
LDO2 Line Regulation
2.860
2.855
2.850
2.845
2.8420.7
I_OUT = 15mA
C_OUT = 1µF
3.1 3.5 3.9 4.3 4.7 5.1 5.5
INPUT VOLTAGE (V)
LDO1 Dropout Voltage
vs. Temperature
65
60
55
50
V_OUT = 2.85V
I_OUT = 150mA
4-540 _{-20 0 20 40 60 80 100 120}
TEMPERATURE (°C)
LDO1 Line Regulation
2.86
2.85
2.84
2.83
2.82
I_OUT = 100mA
C_OUT = 2.2µF
2.821.7 _{3.1 3.5 3.9 4.3 4.7 5.1 5.5}
INPUT VOLTAGE (V)
LDO1 Dropout Voltage
vs. Output Current
80
70
60
50
40
30
20
10
V_OUT = 2.85V
05 _{45 85 125 165 205}
OUTPUT CURRENT (mA)
July 2009
8
M9999-071709-A