MP20043 –DUAL-CHANNEL, 300mA LDO WITH PROGRAMMABLE OUTPUT VOLTAGE
TYPICAL PERFORMANCE CHARACTERISTICS
(continued)
Test Combination A, V
IN
= 3.7V, P1 Open, P2 Open (V
OUT1
=2.8V, V
OUT2
=3.3V), C
IN
= C
OUT1
= C
OUT2
=
1μF, EN1=EN2= V
IN
, T
A
= +25ºC, unless otherwise noted.
Current Limit vs.
Temperature
OUTPUT VOLOTAGE ACCURACY(%)
600
550
Channel 1
V
IN
=3.7V
Load Regulation
OUTPUT VOLTAGE ACCURACY(%)
0.30%
0.20%
0.10%
0.00%
-0.10%
-0.20%
-0.30%
0
Channel 1
V
IN
=3.7V
Channel 2
Line Regulation
0.20%
0.15%
0.10%
0.05%
0.00%
-0.05%
-0.10%
-0.15%
-0.20%
3.0
Channel 1
I
OUT
=1mA
3.5
4.0
4.5
5.0
INPUT VOLTAGE(V)
5.5
Channel 2
CURRENT LIMIT(mA)
500
450
400
350
300
-40 -20
Channel 2
0 20 40 60 80 100
TEMPERATURE(
o
C)
50 100 150 200 250 300
OUTPUT CURRENT(mA)
Output Voltage Accuracy
OUTPUT VOLTAGE ACCURACY(%)
0.20%
0.15%
0.10%
0.05%
0.00%
-0.05%
-0.10%
-0.15%
-0.20%
-40 -20
0 20 40 60
TEMPERATURE (
o
C)
80 100
Channel 2
V
IN
=3.7V, I
OUT
=1mA
Channel 1
100
80
PSRR
100
C
OUT
ESR Stability vs.
Ouput Current
(For Both Channels)
PSRR(dB)
60
40
20
Channel 1
Channel 2
10
Unstable Region
C
OUT
=10uF
1
C
OUT
=0.47uF
Stable Region
I
OUT
=300mA,
0 Single Channel loaded
-20
10 100
0.1
1k 10k 100k 1M 10M
FREQUENCY (Hz)
0
50 100 150 200 250 300
OUTPUT CURRENT(mA)
Channel to Channel Isolation
vs. Frequency
CHANNEL TO CHANNEL ISOLATION(dB)
60
50
40
30
20
10
0
-10
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
MP20043 Rev.0.91
10/10/2011
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7
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