MP20249 – DUAL, ULTRA-LOW NOISE, HIGH PSRR 200mA LINEAR REGULATOR
MP20249 Rev1.0 www.MonolithicPower.com 4
12/15/2010 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
V
IN
= (V
OUT
+ 0.5 V) or 2.3V (whichever is greater), EN = V
IN
, I
OUT
= 10mA, C
IN
= C
OUT1,2
= 1µF,
T
A
= 25°C, unless otherwise noted.
Notes:
6) Load Regulation=
()
OUT(MAX) OUT(MIN)
OUT I OUT I
OUT NOM
VV
(%)
V
⎡⎤ ⎡⎤
⎣⎦ ⎣⎦
−
×
7) Dropout Voltage is defined as the input to output differential when the output voltage drops 100mV below its nominal value.
8) Line Regulation=
()
IN(MAX ) IN(MIN )
OUT V OUT V
IN(MIN) OUT(NOM)
IN MAX
VV
(% / V)
VV V
⎡⎤ ⎡⎤
⎣⎦ ⎣⎦
−
×
⎡⎤
−×
⎣⎦
Parameter Symbol Condition Min Typ Max Units
Input voltage range V
IN
2.3 6.0 V
Maximum Output Current I
MAX
Continuous 200 mA
Output Voltage Accuracy ∆V
OUT
I
LOAD
= 10mA -1 +1 %
Current Limit I
LIM
R
Load
=1Ω 220 270 440 mA
Ground Current I
Q
No Load 125 µA
Dropout Voltage
(6)
V
DROP
V
OUT
=1.8V,
I
OUT
= 150mA,
T
J
=-40°C to +125°C
60 mV
V
OUT
=1.8V, I
OUT
= 200mA
T
J
=-40°C to +125°C
75 mV
Line regulation
(7)
V
LNR
V
IN
=2.3v to 6v
I
OUT
=0.1mA
-0.03 0.03 %/V
Load regulation
(8)
V
LDR
I
OUT
=1mA to 200mA 0.001 %/mA
EN Input High Threshold V
IH
V
IN
= 2.3V to 5.5V 1.2 V
EN Input Low Threshold V
IL
V
IN
= 2.3V to 5.5V 0.4 V
EN Input Bias Current I
SD
EN = V
IN
=5.5V 100 300 nA
Shutdown Supply Current I
GSD
EN1 = EN2 = GND 0.12 1 µA
Under-voltage Lockout UVLO
RISE
2.25 V
Under-voltage Lockout
Hysteresis
UVLO
HYS
160 mV
Thermal Shutdown Temperature T
SD
150 °C
Thermal Shutdown Hysteresis ∆T
SD
15 °C
Output Voltage Noise
100Hz to 1kHz,
C
OUT1,2
=4.7µF, V
OUT
=1.2V
I
LOAD
=10mA
16 µV
RMS
Output Voltage AC PSRR
1kHz, C
OUT1,2
= 2.2µF,
I
LOAD
= 10mA
65 dB
10kHz, C
OUT1,2
= 2.2µF,
I
LOAD
= 10mA
65 dB
100kHz , C
OUT1,2
= 2.2µF,
I
LOAD
= 10mA
55 dB
Active Pull-Down Resistance R
Shutdown
No Load, C
OUT1,2
=1µF 80 Ω
