MP20142
The Future of Analog IC Technology
Dual Channel, 200mA Linear
Regulator With Programmable
Output Voltage and Output Discharge
FEATURES
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Programmable Output Voltage
Up to 200mA Output Current (Each LDO)
60mV Dropout at 100mA Load
Dual Shutdown Pins Control Each Output
75dB PSRR at 1kHz
7µV
RMS
Low Noise Outputs
Current Limiting and Thermal Protection
Short Circuit Protection
Two LDOs in TQFN8 (2mm×2mm) Package
Output Load Discharge when Disabled
Cellular Phones
Battery-powered Equipment
Laptop, Notebook, and Palmtop Computers
Hand-held Equipment
Wireless LAN
DESCRIPTION
The MP20142 is a dual-channel, low noise, low
dropout and high PSRR linear regulator with
programmable output voltage. The output
voltage of MP20142 ranges from 1.2V to 3.3V
in 100mV increments and 2.5% accuracy by
operating from a +2.5V to +5.5V input. The
different output voltage options can be
programmed by setting the voltage of P1 and
P2 to VDD, GND or floating. There are 9
different voltage settings in one chip. Each
output channel can supply up to 200mA of load
current.
The MP20142 uses two internal P-channel
MOSFETs as the pass devices, which
consumes 150µA supply current when both
channels are enabled at no load condition. The
EN1 and EN2 pins control each output
respectively. When both channels shutdown
simultaneously, the chip turns off and
consumes nearly zero operation current which
is suitable for battery-power devices. The
MP20142 also features current limiting, output
discharge and over temperature protection.
It is available in a TQFN8 (2mm×2mm) package.
APPLICATIONS
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks
of Monolithic Power Systems, Inc.
TYPICAL APPLICATION
MP20142 Rev.0.9
7/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
1
MP20142 –DUAL-CHANNEL, 200mA LDO WITH PROGRAMMABLE OUTPUT VOLTAGE
ORDERING INFORMATION*
Part Number*
MP20142DGT-LF-Z
Package
TQFN8 (2mm×2mm)
Top Marking
AAY
Free Air Temperature (T
A
)
-40°C to +85°C
ORDERING GUIDE*
MP20142DGT-LF-Z
Package Type
GT: TQFN (2mm x 2mm)
*
For RoHS Compliant Packaging, add suffix - LF (e.g. MP20142DGT-LF);
For Tape and Reel, add suffix -Z (e.g. MP20142DGT-LF-Z).
PACKAGE REFERENCE
TOP VIEW
VIN
EN1
P2
P1
1
8
VOUT1
VOUT2
GND
EN2
GND
2
3
4
7
6
5
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Input Voltage .................................... 6V
All Other Pins ............................................ 5.5V
(2)
Power Dissipation, PD @ T
A
=25°C,
TQFN8 ...................................................... 1.5W
Storage Temperature Range ..... -65°C to 150°C
Lead Temperature (Soldering, 10sec) .....260°C
Recommended Operating Conditions
(3)
Supply Input Voltage ..................... 2.5V to 5.5 V
Operating Junct. Temp (T
J
) ......-40°C to +125°C
Thermal Resistance
(4)
θ
JA
80
θ
JC
TQFN8...............................
16
°C/W
ESD Susceptibility
HBM (Human Body Mode) .......................... 2kV
MM (Machine Mode) ................................. 200V
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature T
J
(MAX), the junction-to-
ambient thermal resistance
θ
JA
, and the ambient temperature
T
A
. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by P
D
(MAX)=(T
J
(MAX)-
T
A
)/
θ
JA
. Exceeding the maximum allowable power dissipation
will cause excessive die temperature, and the regulator will go
into thermal shutdown. Internal thermal shutdown circuitry
protects the device from permanent damage.
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on JESD51-7 4-layer board.
MP20142 Rev.0.9
7/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
2
MP20142 –DUAL-CHANNEL, 200mA LDO WITH PROGRAMMABLE OUTPUT VOLTAGE
PROGRAMMABLE OUTPUT VOLTAGE SETTING
P1 State
L
L
L
H
H
H
Open
Open
Open
P2 State
L
H
Open
L
H
Open
L
H
Open
V
OUT1
1.5V
1.5V
1.8V
2.6V
2.8V
2.8V
3.0V
3.0V
3.3V
V
OUT2
1.8V
2.8V
3.0V
3.0V
3.0V
3.3V
3.0V
3.3V
3.3V
MP20142 Rev.0.9
7/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
3
MP20142 –DUAL-CHANNEL, 200mA LDO WITH PROGRAMMABLE OUTPUT VOLTAGE
ELECTRICAL CHARACTERISTICS
V
IN
= (V
OUT
+0.4V) or +2.5V, whichever is greater. C
IN
=C
OUT1
=C
OUT2
=1uF, EN1=EN2=V
IN
Typical Value at T
A
= 25°C for each LDO, unless otherwise noted.
Parameter
Output Voltage Accuracy
Maximum Output Current
Current Limit
Quiescent Current
Shutdown Supply Current
Dropout Voltage
(5)
Line Regulation
(6)
Load Regulation
(7)
EN Logic High
EN Logic Low
EN Input Bias Current
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
Output Voltage Noise
Symbol
∆V
OUT
I
MAX
I
LIM
I
G
I
GSD
V
DROP
∆V
LINE
∆V
LOAD
V
IH
V
IL
I
SD
T
SD
∆T
SD
V
NOISE
Condition
I
LOAD
=1mA
Continuous
Short circuit current limit
No Load (Single Channel)
No Load (Dual Channel)
EN1 = EN2 = GND
I
OUT
= 100mA
V
IN
=(V
OUT
+0.4V) or 2.5V to
5.5V, I
OUT
=1mA
V
OUT
> 1.5V
V
OUT
≤
1.5V
V
IN
= 2.5V to 5.5V
V
IN
= 2.5V to 5.5V
EN = GND or V
IN
Min
-2.5
200
660
90
150
0.01
60
-
Typ
Max
2.5
Units
%
mA
mA
µA
µA
µA
mV
%/V
%
%
V
V
nA
°C
°C
µV
RMS
dB
dB
100
5
µA
-8
0.7
V
Ω
1
120
0.1
1.2
1.8
1.6
0.4
100
140
10
Output Voltage AC PSRR
10Hz to 30kHz,
C
OUT
=1µF, I
LOAD
=1mA
100Hz, C
OUT
= 1µF,I
LOAD
=
200mA (Single Channel
loaded)
1kHz , C
OUT
= 1µF,I
LOAD
=
200mA (Single Channel
loaded)
V
IN
=5V, EN1=EN2=GND
V
IN
=2.5V
to 5.5V
High
state
bias current
Low state bias
current
Open state
20
7
75
75
Output
Voltage
Discharge
Resistance in Shutdown
P1/P2 Termination bias for
setting High, Low, Open States
Notes:
5) Dropout Voltage is defined as the input to output differential when the output voltage drops 100mV below its nominal value.
6) Line Regulation =
V
OUT
⎡
V
⎣
IN(MAX )
⎦
⎤
−
V
OUT
⎡
V
⎣
IN(MIN)
⎦
⎤
⎡
V
−
V
IN(MIN)
⎤ ×
V
OUT(NOM)
⎣
IN
(
MAX
)
⎦
7) Load Regulation =
×
100(% / V)
V
OUT
⎡
I
⎤
⎣
OUT (MAX )
⎦
−
V
OUT
⎡
I
⎤
⎣
OUT(MIN)
⎦
V
OUT
(
NOM
)
×
100(%)
MP20142 Rev.0.9
7/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
4
MP20142 –DUAL-CHANNEL, 200mA LDO WITH PROGRAMMABLE OUTPUT VOLTAGE
PIN FUNCTIONS
Pin #
1
2
3
4
5
6
7
8
Name
VIN
EN1
P2
P1
EN2
GND
VOUT2
VOUT1
Description
Supply Input Pin
Channel 1 Enable (Active High). Do Not Float This Pin.
Programming input 2. The state of P2 selects one of nine output voltage options.
Programming input 1. The state of P1 selects one of nine output voltage options.
Channel 2 Enable (Active High). Do Not Float This Pin.
Common Ground
Channel 2 Output Voltage
Channel 1 Output Voltage
MP20142 Rev.0.9
7/12/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
5
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