MP20051 – LOW NOISE HIGH PSRR 1A LINEAR REGULATOR
MP20051 Rev.1.2 www.MonolithicPower.com 4
3/17/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
V
IN
=V
OUT
+0.5V or V
IN
=2.5V, EN=V
IN
, Typical values are at T
A
=25°C, unless otherwise specified
Parameter Condition Min Typ Max Units
Input Voltage 2.5 5.5 V
Input Under Voltage Lockout V
IN
rising 1.95 2.25 V
Hysteresis of UVLO 160 mV
FB Voltage V
OUT
=0.8V, I
OUT
=1mA 0.784 0.8 0.816 V
Output Voltage Accuracy
I
OUT
=1mA, T
A
=25°C -2 2
%
I
OUT
=1mA, -40≤T
A
≤85°C -3 3
Maximum Output Current Continuous, V
IN
≥2.5V, V
OUT
=2.5V 1 A
Short-Circuit Current Limit V
OUT
=0, V
IN
≥2.5V 1.6 A
In-Regulation Current Limit
V
OUT
=2.5V, V
OUT
within 4% of normal
output voltage V
IN
=5.5V
1.4 2.2 3.0 A
Ground Current
I
OUT
=0.1mA, V
OUT
=2.5V 110
μA
I
OUT
=1A, V
OUT
=2.5V 600
Dropout Voltage
(6)
I
OUT
=1A, V
OUT
=2.5V 140 280
mV
I
OUT
=750m, V
OUT
=2.5V 105 210
I
OUT
=500mA, V
OUT
=2.5V 70 140
Line Regulation
(7)
V
OUT
=2.5V, V
IN
from V
OUT
+0.5V to
5.5V, I
OUT
=100mA,
-0.15 0.15 %/V
Load Regulation
(8)
I
OUT
from 100mA to 1A, V
OUT
=2.5V 0.3 %
Output Voltage Noise
I
OUT
=100mA, f ranges
from 10Hz to 100kHz
V
OUT
=1.1V 13
μV
RMS
V
OUT
=3.3V 35
V
OUT
=5V 55
PSRR
V
IN
= 2.5V, V
OUT
= 1.1V,
I
OUT
= 1A
f=100Hz 65
dB
f=1kHz 63
f=10kHz 63
f=1MHz 33
Shutdown Supply Current V
IN
=+5.5V 0.2 μA
EN Pin Current , Enabled V
IN
=V
EN
=+5.5V 0.2 μA
Feedback Pin Current V
IN
=+5.5V, V
FB
=6V 0.02 μA
Startup Time
V
OUT(NOM)
=2.5V, C
OUT
=4.7μF,
V
OUT
=0% to 90%V
OUT
NOM
45 μs
EN PIN Threshold
EN Logic High 1.5
V
EN Logic Low 0.4
Thermal Shutdown Temperature Typical thermal hysteresis =20°C 150 °C
Notes:
6) Dropout Voltage is defined as the input to output differential when the output voltage drops 100mV below its nominal value.
7) Line Regulation=
IN(MAX ) IN(MIN )
OUT V OUT V
IN(MIN) OUT(NOM)
IN MAX
VV
(% / V)
VV V
8) Load Regulation=
OUT(MAX) OUT(MIN)
OUT I OUT I
OUT NOM
VV
(%)
V
