MP20045 – LOWER NOISE, 1A LINEAR REGULATOR
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
=3.3V, V
OUT
=2.8V, C
IN
=C
OUT
=2.2uF, T
A
=25°C, unless otherwise noted
Quiescent Current
vs. Temperature
120
Quiescent Current
vs. Input Voltage
120
180
160
Dropout Voltage
vs. Temperature
QUI E SC E NT C UR R E NT (uA )
DR OPOUT V OL T A G E (mV )
100
80
60
40
20
0
-40 -20 0 20 40 60 80 100
T E M PE R A T UR E ( oC )
QUI E SC E NT C UR R E NT (uA )
100
80
60
40
20
0
3
3.5
4
4.5
5
5.5
I NPUT V OL T A G E (V )
140
120
100
80
60
40
20
0
-40 -20
I
OUT
=1A
0 20 40 60 80 100
T E M PE R A T UR E ( oC )
DR OPOUT V OL T A G E (mV )
160
140
120
Dropout Voltage
vs. Output Current
EN threshold
vs. Input Voltage
1.1
1
0.9
EN high threshold
1
0.9
0.8
0.7
EN threshold
vs. Temperature
EN high threshold
V
EN
(V)
80
60
40
20
0
0
200
400
600
800 1000
OUT PUT C UR R E NT (mA )
0.8
0.7
0.6
0.5
0.4
3
3.5
4
4.5
5
I NPUT V OL T A G E (V )
5.5
EN low threshold
V
EN
(V)
100
0.6
0.5
0.4
0.3
0.2
0.1
0
-40 -20
60 80 100
T E M PE R A T UR E ( oC )
0
20
40
EN low threshold
2.5
2.5
OUT PUT V OL T A G E A C C UR A C Y (% )
Current Limit
vs. Temperature
2
1.5
1
0.5
0
-40 -20
Current Limit
vs. Input Voltage
2
1.5
1
0.5
0
Line Regulation
0.3
0.2
0.1
0.0
-0.1
-0.2
-0.3
3.0
I
OUT
=0A
I
OUT
=0.5A
C UR R E NT L I M I T (A )
C UR R E NT L I M I T (A )
0
20
40
60
80 100
3
3.5
4
4.5
5
5.5
3.5
4.0
4.5
5.0
5.5
T E M PE R A T UR E ( oC )
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
MP20045 Rev. 0.92
1/4/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
6
MPS [ MONOLITHIC POWER SYSTEMS ]
