MIC5332 Datasheet, PDF (5/12 Pages) Micrel Semiconductor – Micro-Power High Performance Dual 300mA ULDO™

Micrel, Inc.
Typical Characteristics
PSRR
-100
-90
50mA
-80
-70
-60
-50
300mA
-40
-30
-20 ^VIN ^{= 2.3V}
-10 ^{VOUT = 1.2V}
0 ^{COUT = 2.2µF}
FREQUENCY (Hz)
Dropout Voltage
vs. Temperature
0.18
V_OUT = 2.8V
0.16 _{COUT = 1µF}
0.14
300mA
0.12
0.10
0.08
100mA
0.06
0.04
50mA
0.02
10mA
-040 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Ground Current
vs. Temperature
45
42
39
10mA
36
100mA
300mA
EN1 = EN2 = V_IN
33
V_IN = V_OUT + 1V
V_OUT = 2.8V
C_OUT = 1µF
30-40 _{-20 0 20 40 60 80 100 120}
TEMPERATURE (°C)
850
800
750
700
650
600
550
500
450
400
3520.5
Current Limit
vs. Supply Voltage
C_IN = 1µF
C_OUT = 1µF
3 3.5 4 4.5 5 5.5
SUPPLY VOLTAGE (V)
January 2007
PSRR
-90
-80
50mA
-70
-60
-50
300mA
-40
-30
-20 V_IN = 2.3V
-10 ^{VOUT = 1.2V}
0 ^{COUT = 1µF}
FREQUENCY (Hz)
Ground Current
vs. Supply Voltage
41
39
Dual LDO Enabled
37 _{VOUT1 = 2.5V}
35 V_OUT2 = 1.2V
33
C_OUT1
C_OUT2
=
=
1µF
1µF
31 ^IOUT1 ^{= 300mA}
29 ^{IOUT2 = 300mA}
Single LDO Enabled
27
225.5 _{3 3.5 4 4.5 5 5.5}
SUPPLY VOLTAGE (V)
2.820
Output Voltage
vs. Load Current
2.816
2.812
2.808
2.804
2.8000
V_IN = V_{OUT +} 1V
V_OUT = 2.8V
C_OUT = 1µF
50 100 150 200 250 300
LOAD CURRENT (mA)
POR2 Delay vs. CSET2
100K
10K
1K
101000
LDO2
V_IN = 3.6V
V_OUT = 1.2V
C_OUT = 1µF
1K
10K
CSET2 (pF)
100K
5
MIC5332
0.14
0.12
0.10
0.08
0.06
0.04
0.02
00
Dropout Voltage
vs. Load Current
V_OUT = 2.8V
C_OUT = 1µF
50 100 150 200 250 300
LOAD CURRENT (mA)
Ground Current
vs. Load Current
41
39
Dual LDO Enabled
37
35 ^VIN ^{= V}OUT ^{+ 1V}
V_OUT1 = 2.5V
33 _{VOUT2 = 1.2V}
31 ^{COUT1 = 1µF}
C_OUT2 = 1µF
29
27
Single LDO Enabled
250 _{50 100 150 200 250 300}
LOAD CURRENT (mA)
Output Voltage
vs. Temperature
3.0
2.9
2.8
2.7
2.6
V_IN = V_OUT + 1V
V_OUT = 2.8V
C_OUT = 1µF
2.5-40 _{-20 0 20 40 60 80 100 120}
TEMPERATURE (°C)
Output Noise
Spectral Density
1.2
V_IN = V_OUT + 1V
1.0
V_OUT = 2.8V
C_OUT = 1µF
0.8
Load = 50mA
0.6
0.4
0.2
100 100 1K 10K 100K 1M
FREQUENCY (Hz)
M9999-011608-A