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MP2004DJ-SJ-LF-P

P1-P3P4-P6P7-P9
MP2004-DUAL, LOW NOISE, HIGH PSRR, 200mA LINEAR REGULATOR
MP2004 Rev. 0.92 www.MonolithicPower.com 4
4/6/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
V
IN
=3.6V, V
OUT1
=2.5V, V
OUT2
=1.8V, C
IN
=C
OUT1
=C
OUT2
=2.2uF, EN1=EN2=V
IN
, Typical Value at T
A
=25°C
for each LDO unless otherwise noted.
Notes:
5) Load Regulation=
100(%)
V
VV
OUT(NOM)
]OUT[I]OUT[I
OUT(MIN)OUT(MAX)
×
−
6) Dropout Voltage is defined as the input to output differential when the output voltage drops 100mV below its nominal value.
7) Line Regulation=
)100(%/V
V]V[V
VV
OUT(NOM)IN(MIN)IN(MAX)
]OUT[V]OUT[V
IN(MIN)IN(MAX)
×
×−
−
PIN FUNCTIONS
Pin # Name Description
1 VOUT2 Channel 2 Output Voltage
2 GND Common Ground
3 EN2 Channel 2 Enable (Active High). Do Not Float This Pin.
4 EN1 Channel 1 Enable (Active High). Do Not Float This Pin.
5 VIN Supply Input Pin
6 VOUT1 Channel 1 Output Voltage
Parameter
Symbol Condition Min Typ Max Units
Output Voltage Accuracy
(Load regulation)
(5)
ΔV
OUT
I
LOAD
= 1mA to 200mA -1 +1 %
Maximum Output Current I
MAX
Continuous 200 mA
Current Limit I
LIM
R
Load
=1Ω
450 mA
Quiescent Current I
Q
No Load 114 uA
I
OUT1
= 100mA 110 mV
Dropout Voltage
(6)
V
DROP
I
OUT1
= 200mA 250 mV
Line Regulation
(7)
∆V
LINE
V
IN
=(V
OUT
+0.4V or 2.5V)
to 6V, I
OUT
=1mA
-0.05 +0.05 %/V
EN Input High Threshold V
IH
V
IN
= 2.5V to 6.0V 1.6 V
EN Input Low Threshold V
IL
V
IN
= 2.5V to 6.0V 0.45 V
EN Input Bias Current I
SD
EN= V
IN
=6.5V 300 nA
Shutdown Supply Current I
GSD
EN1 = EN2 = GND 0.03 1 uA
Thermal Shutdown Temperature T
SD
140 °C
Thermal Shutdown Hysteresis ΔT
SD
10 °C
Output Voltage Noise
10Hz to 100kHz,
C
OUT
=2.2μF, I
LOAD
=1mA
95 μV
RMS
Output PSRR
100Hz, C
OUT
= 2.2μF,
I
LOAD
= 100mA
69 dB
MP2004-DUAL, LOW NOISE, HIGH PSRR, 200mA LINEAR REGULATOR
MP2004 Rev. 0.92 www.MonolithicPower.com 5
4/6/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
=3.6V, V
OUT1
=2.5V, V
OUT2
=1.8V, C
IN
=C
OUT1
=C
OUT2
=2.2uF, EN1=EN2=V
IN
, Typical Value at T
A
=25°C
for Both Channel Enabled.
0
20
40
60
80
100
120
100 1000 10000 100000 1000000
FREQUENCY(Hz)
Channel-to-Channel
Isolation vs. Frequency
-40 -20 0 20 40 60 85
Quiescent Current vs.
Temperature
200
150
100
50
0
Dropout Voltage vs.
Temperature
-40 -20 0 20 40 60 85
Out Voltage Accuracy vs.
Temperature
0
10
20
30
40
50
60
70
80
10 100 1000 10000 100000 1000000
FREQUENCY(Hz)
Power Supply Rejection
Ratio vs. Frequency
V
OUT
10mV/div
V
IN
1V/div
V
OUT
10mV/div
I
LOAD
50mA/div
V
OUT
1V/div
V
EN
5V/div
200
220
240
260
280
300
-40 -20 0 20 40 60 85
I
LOAD
=200mA
-0.25
-0.20
-0.15
-0.10
-0.05
0.00
0.05
0.10
0.15
0.20
0.25
MP2004-DUAL, LOW NOISE, HIGH PSRR, 200mA LINEAR REGULATOR
MP2004 Rev. 0.92 www.MonolithicPower.com 6
4/6/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
BLOCK DIAGRAM
Figure1—Functional Block Diagram
OPERATION
The MP2004 integrates two low noise, low
dropout, low quiescent current and high PSRR
linear regulators. It is intended for use in devices
that require very low voltage, low quiescent
current power such as wireless LAN, battery-
powered equipment and hand-held equipment.
The MP2004 uses internal PMOSs as the pass
elements and features internal thermal shutdown and
an internal current limit circuit.
Dropout Voltage
Dropout voltage is the minimum input to output
differential voltage required for the regulator to
maintain an output voltage within 100mV of its
nominal value. Because the PMOS pass element
behaves as a low-value resistor, the dropout
voltage of MP2004 is very low.
Shutdown
The MP2004 can be switched ON or OFF by a
logic input at the EN pin. A high voltage at this
pin will turn the device on. When the EN pin is
low, the regulator output is off. The EN pin should
be tied to VIN to keep the regulator output always
on if the application does not require the
shutdown feature. Do not float the EN pin.
Current Limit
The MP2004 includes two independent current
limit structures which monitor and control each
PMOS’s gate voltage limiting the guaranteed
maximum output current to 200mA.
Thermal Protection
Thermal protection turns off the PMOS when the
junction temperature exceeds +140ºC, allowing
the IC to cool. When the IC’s junction
temperature drops by 10ºC, the PMOS will be
turned on again. Thermal protection limits total
power dissipation in the MP2004. For reliable
operation, junction temperature should be limited
to 125 ºC maximum.
Load-Transient Considerations
The output response of load-transient consists of
a DC shift and transient response. Because of
the excellent load regulation of MP2004, the DC
shift is very small. The output voltage transient
depends on the output capacitor’s value and the
ESR. Increasing the capacitance and decreasing
the ESR will improve the transient response.
Typical output voltage transient spike of MP2004
for a step change in the load current from 0mA to
80mA is tens mV.
P1-P3P4-P6P7-P9

MP2004DJ-SJ-LF-P

Mfr. #:
Buy MP2004DJ-SJ-LF-P
Manufacturer:
Monolithic Power Systems (MPS)
Description:
LDO Voltage Regulators Dual Low Noise High PSRR 200mA L Reg
Lifecycle:
New from this manufacturer.
Delivery:
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