MP20056
Low-Noise, High-PSRR, 250mA
Linear Regulator
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP20056 is a low-dropout linear regulator
that supplies up to 250mA current with a 100mV
dropout voltage and can operate from 2.5V to
5.5V input. The output voltage is preset at 1.8V,
2.5V or 3.3V for the two different packages. An
external resistor divider can adjust the output
voltage from 0.8V to 5V.
An internal PMOS pass element allows for a low
150μA ground current, making the MP20056
suitable for battery-powered devices. Other
features include low-power shutdown, shortcircuit protection, and thermal protection. The
MP20056 is available in a 2mm×2mm 8-pin QFN
and a 5-pin TSOT23-5 packages.
Up to 250mA Output Current
Low 100mV Dropout at 250mA
Low 150μA Ground Current
Low Noise: 13μVRMS typical (10Hz to 100kHz)
63dB PSRR @1kHz
Stable with Ceramic Capacitor
Excellent Load/Line Transient Response
Current Limiting and Thermal Protection
Fixed output voltage 1.8V and 3.3V.
Adjustable Output Voltage from 0.8V to 5V
Using an External Resistor Divider
APPLICATIONS
Notebook Computers
Cordless Phones
Cellular Phones
Wireless Communication Equipment
Hand-Held Instruments
All MPS parts are lead-free, halogen-free, and adhere to the RoHS
directive. For MPS green status, please visit the MPS website under
Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are
trademarks of Monolithic Power Systems, Inc. or its subsidiaries.
TYPICAL APPLICATION
MP20056 Rev.1.12
www.MonolithicPower.com
11/12/2019
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1
MP20056 – LOW-NOISE, HIGH-PSRR, 250mA LINEAR REGULATOR
ORDERING INFORMATION
Part Number
MP20056GG-18*
MP20056GJ-33**
MP20056GG-33
MP20056GJ-25
MP20056GJ
Package
QFN-8(2mmx2mm)
TSOT23-5
QFN-8(2mmx2mm)
TSOT23-5
TSOT23-5
Top Marking
See Below
See Below
See Below
See Below
See Below
*For Tape & Reel, add suffix –Z (e.g. MP20056GG-18–Z);
**For Tape & Reel, add suffix -Z(e.g MP20056GJ-33-Z);
TOP MARKING (MP20056GG-18)
BK: product code of MP20056GG-18;
Y: year code;
LLL: lot number;
TOP MARKING (MP20056GJ-33)
AFT: product code of MP20056GJ-33;
Y: year code;
TOP MARKING (MP20056GG-33)
BV: product code of MP20056GG-33;
Y: year code;
LLL: lot number;
MP20056 Rev.1.12
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2
MP20056 – LOW-NOISE, HIGH-PSRR, 250mA LINEAR REGULATOR
TOP MARKING (MP20056GJ-25)
ALA: product code of MP20056GJ-25;
Y: year code;
TOP MARKING (MP20056GJ)
AWZ: product code of MP20056GJ;
Y: year code;
PACKAGE REFERENCE
TOP VIEW
TOP VIEW
8 FB
EN 2
7 NC
IN 3
6 OUT
IN 4
5 OUT
EXPOSED PAD
ON BACKSIDE
CONNECT TO GND
QFN8 (2 x 2mm)
IN
1
GND
2
EN
3
5
OUT
4
FB
MARKING
GND 1
TSOT23-5
MP20056 Rev.1.12
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MP20056 – LOW-NOISE, HIGH-PSRR, 250mA LINEAR REGULATOR
ABSOLUTE MAXIMUM RATINGS (1)
Thermal Resistance (5)
VIN, EN, FB to GND ....................... -0.3V to +6V
OUT to GND........................ -0.5V to (VIN + 0.5V)
Continuous Power Dissipation ...... (TA=25°C) (2)
QFN8 (2x2mm) ................................................1.6W
TSOT23-5 ...................................................... 0.57W
Junction Temperature ............................... 150°C
Storage Temperature Range ...... -65°C to 150°C
Lead Temperature (Soldering, 10sec)........... 260°C
QFN-8 (2mmx2mm) ................ 80 ...... 16... °C/W
TSOT23-5 ............................... 220 .... 110.. °C/W
ESD SUSCEPTIBILITY(3)
HBM (Human Body Mode)........................... 2kV
MM (Machine Mode) .................................. 200V
Recommended Operating Conditions (4)
Supply Input Voltage ....................... 2.5V to 5.5V
Enable Input Voltage ......................... 0V to 5.5V
Operating Junction Temp. (TJ). -40°C to +125°C
θJA
θJC
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature TJ (MAX), the junction-toambient thermal resistance θJA, and the ambient temperature
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD (MAX) = (TJ
(MAX)-TA)/θJA. 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) Devices
are
ESD
sensitive.
Handling
precaution
recommended.
4) The device is not guaranteed to function outside of its
operating conditions.
5) Measured on JESD51-7, 4-layer PCB.
MP20056 Rev.1.12
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MP20056 – LOW-NOISE, HIGH-PSRR, 250mA LINEAR REGULATOR
ELECTRICAL CHARACTERISTICS
VIN=VOUT+0.5V or VIN=2.5V, EN=VIN, VOUT =1.8V or 3.3V. Typical values are at Tj=25°C, unless
otherwise specified.
Parameter
Input Voltage
Input
Under-Voltage
Lockout
Hysteresis of UVLO
Condition
Min
2.5
VIN rising, VOUT=1.8V
1.95
FB Voltage
VOUT=0.8V, IOUT=1mA, Tj=25°C
Output Voltage Accuracy
IOUT=1mA, TJ=25°C
Maximum Output Current
Short-Circuit Current Limit
Continuous
VOUT=0, VIN≥2.5V
VOUT within 4% of normal output voltage
VIN=5.5V
IOUT=0.1mA
IOUT=250mA
In-Regulation Current Limit
Ground Current
Dropout Voltage(6)
Output-Voltage Noise(9)
PSRR(9)
Units
V
2.3
V
0.784
0.8
mV
0.816
V
2
%
-2
VIN from VOUT+0.5V or 2.5V to 5.5V,
IOUT=100mA,
IOUT from 100mA to VOUT=1.8V, 3.3V
250mA
VOUT=2.5V
VOUT=1.8V
IOUT=100mA, f ranges
VOUT=3.3V
from 10Hz to 100kHz
VOUT=5V
f=100Hz
VOUT = 1.8V, 2.5V,
f=1kHz
3.3V
f=10kHz
IOUT = 250mA
f=1MHz
Load Regulation(8)
Max
5.5
160
250
350
550
850
mA
mA
300
550
800
mA
150
220
250
330
μA
100
150
mV
-0.15
0.15
%/V
-0.3
-0.4
0.3
0.4
%
IOUT=250mA, VOUT=3.3V, TJ=25°C
Line Regulation(7)
Typ
20
35
55
65
63
63
33
μVRMS
dB
Shutdown Supply Current
VIN=+5.5V, TJ=25°C
0.1
0.3
μA
EN Pin Current , Enabled
VIN=VEN=+5.5V
COUT=4.7μF,
VOUT=10% to
90%VOUT(NOM)
EN Logic High
EN Logic Low
0.1
0.3
μA
Startup Time
EN PIN Threshold
Thermal Shutdown(9)
Thermal
Shutdown
Hysteresis(9)
VOUT=1.8V
100
300
VOUT=3.3V, 2.5V
100
450
1.5
0.4
μs
V
150
°C
20
°C
Notes:
6) Dropout Voltage is defined as the input to output differential when the output voltage drops 100mV below its nominal value.
VOUT V
7) Line Regulation=
IN(MAX )
VOUT V
IN(MIN)
V
VIN(MIN) VOUT(NOM)
INMAX
8) Load Regulation=
VOUT I
OUT (MAX )
VOUT I
VOUT NOM
OUT (MIN)
(% / V)
(%)
9) Design guarantee, no test in production
MP20056 Rev.1.12
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11/12/2019
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MP20056 – LOW-NOISE, HIGH-PSRR, 250mA LINEAR REGULATOR
PIN FUNCTIONS
Pin #
Pin #
QFN-8
TSOT23-5
(2mmx2mm)
Name
Pin Function
2
GND
Ground. Connect exposed pad to GND plane for optimal thermal
performance.
2
3
EN
Regulator Enable Control Input. Drive EN above 1.5V to turn on the
MP20056. Drive EN below 0.4V to turn it off. Do not float the EN pin.
3, 4
1
VIN
Regulator Input. Supply voltage ranges from 2.5V to 5.5V. Bypass with a
2.2μF capacitor. These pins must be externally connected for proper
operation even if they are internally connected.
5, 6
5
VOUT
Regulator Output. Bypass with a standard 4.7μF ceramic capacitor to GND.
Connect all the pins together externally.
1, Exposed
Pad
7
8
4
NC
No Connection. Leave this NC pin open.
FB
Feedback Input. Connect FB to the center point of the external resistor
divider. The feedback threshold voltage is 0.8V.
MP20056 Rev.1.12
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11/12/2019
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MP20056 – LOW-NOISE, HIGH-PSRR, 250mA LINEAR REGULATOR
TYPICAL PERFORMANCE CHARACTERISTICS
VIN=2.5V/3.7V, VOUT=1.8V/3.3V, TA=25ºC unless otherwise noted.
1.0
1.90
300
1.84
250
0.8
0.6
0.4
200
1.78
0.2
0.0
150
1.72
-0.2
100
-0.4
1.66
-0.6
50
-0.8
-1.0
0
100
200
300
400
500
3.40
1.60
2.0
2.6
3.2
3.8
4.4
5.0
5.6
200
300
400
500
3.5
3.36
3.4
3.32
3.30
3.3
3.28
3.25
3.20
100
3.6
3.40
3.35
0
0
3.2
3.24
0
80
160
240
320
400
3.20
3.5
3.1
3.9
4.3
4.7
5.1
5.5
3.0
-40
200
0.90
700
180
0.84
640
160
0.78
580
140
0.72
520
120
0.66
460
100
-40
-10
20
50
80
110 140
0.60
-40
-10
20
50
80
110 140
400
-40
-10
20
50
80
110 140
-10
20
50
80
110 140
MP20056 Rev.1.12
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11/12/2019
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MP20056 – LOW-NOISE, HIGH-PSRR, 250mA LINEAR REGULATOR
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN=2.5V, VOUT=1.8V, TA=25ºC unless otherwise noted.
VIN
2V/div.
VIN
5V/div.
VIN
2V/div.
VOUT
10mV/div.
VOUT
1V/div.
VOUT
1V/div.
IOUT
0.5A/div.
IOUT
0.5A/div.
VIN
2V/div.
VIN
2V/div.
VEN
2V/div.
VEN
2V/div.
VOUT
2V/div.
IOUT
0.5A/div.
VOUT
2V/div.
IOUT
0.5A/div.
VIN
2V/div.
VIN
2V/div.
VOUT
1V/div.
VOUT
1V/div.
IOUT
0.5A/div.
IOUT
0.5A/div.
IOUT
0.1A/div.
VIN
2V/div.
VOUT
1V/div.
IIN
0.5A/div.
VIN
2V/div.
VOUT
1V/div.
IIN
0.5A/div.
MP20056 Rev.1.12
www.MonolithicPower.com
11/12/2019
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© 2019 MPS. All Rights Reserved.
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MP20056 – LOW-NOISE, HIGH-PSRR, 250mA LINEAR REGULATOR
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN=3.7V, VOUT=3.3V, TA=25ºC unless otherwise noted.
VIN
2V/div.
VIN
5V/div.
VIN
2V/div.
VOUT
20mV/div.
VOUT
2V/div.
VOUT
2V/div.
IOUT
0.5A/div.
IOUT
0.5A/div.
IIN
0.1A/div.
VIN
2V/div.
VEN
2V/div.
VIN
2V/div.
VEN
2V/div.
VIN
2V/div.
VOUT
2V/div.
VOUT
2V/div.
IOUT
0.5A/div.
VOUT
2V/div.
IOUT
0.5A/div.
VIN
2V/div.
VIN
2V/div.
VIN
2V/div.
VOUT
2V/div.
VOUT
2V/div.
VOUT
2V/div.
IOUT
0.5A/div.
IOUT
0.5A/div.
IIN
0.5A/div.
IOUT
0.5A/div.
MP20056 Rev.1.12
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MP20056 – LOW-NOISE, HIGH-PSRR, 250mA LINEAR REGULATOR
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
TA=25ºC, unless otherwise noted.
MP20056 Rev.1.12
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MP20056 – LOW-NOISE, HIGH-PSRR, 250mA LINEAR REGULATOR
FUNCTIONAL BLOCK DIAGRAM
Figure 1: Functional Block Diagram
MP20056 Rev.1.12
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MP20056 – LOW-NOISE, HIGH-PSRR, 250mA LINEAR REGULATOR
OPERATION
The MP20056 is a low-dropout linear regulator
that can supply up to 250mA current, which
makes it suitable for very low voltage, low
quiescent, low noise, and high PSRR
applications, such as wireless LAN transceivers,
notebook computers, smartphones, and other
low-power electronics.
The MP20056 uses an internal PMOS as the
pass element and includes both thermal
shutdown and an internal current-limiting 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.
Shutdown
The MP20056 can be switched ON or OFF by a
logic input at the EN pin: Logic high turns the
regulator on and logic low turns it off. Tie the EN
pin to VIN if the application does not require the
shutdown feature. Do not float the EN pin.
Current Limit
The MP20056 includes a current limit structure
that monitors and controls the PMOS gate
voltage to limit the guaranteed maximum output
current to 0.4A.
Thermal Protection
Thermal protection turns off the PMOS when the
junction temperature exceeds 150°C, allowing
the IC to cool. When the IC’s junction
temperature drops by 20°C, the PMOS will turn
on again. Thermal protection limits total power
dissipation in the MP20056. For reliable
operation, limit the junction temperature to a
maximum of 125°C.
Load-Transient Considerations
The output response of the load-transient
consists of a transient response and DC shift—
the MP20056’s excellent load regulation
effectively limits the DC shift. The output voltage
transient depends on the output capacitor’s value
and ESR. Increasing the capacitance and
decreasing the ESR will improve the transient
response.
MP20056 Rev.1.12
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MP20056 – LOW-NOISE, HIGH-PSRR, 250mA LINEAR REGULATOR
APPLICATION INFORMATION
Setting the Output Voltage
The output voltage of the MP20056 is preset to
1.8V, 2.5V or 3.3V by internal resistor divider.
The output voltage also can be adjusted by using
an external resistor divider (R1 and R2 in Figure
2).
VOUT
Output Capacitor Selection
The MP20056 is specifically designed to work
with a standard ceramic output capacitor to save
space and improve performance. Use a 4.7µF
ceramic capacitor for most applications. Larger
output capacitors will improve load transient
response and reduce noise at the cost of
increased size.
R1
MP20056
FB
R2
GND
Figure 2: Setting the Output Voltage
However, the sum of R1 and R2 should not
exceed 10kΩ to minimize their impact on the
internal resistor divider. For an accurate outputvoltage setting, use 1kΩ (±1%) for R2, and
determine R1 with:
V
VFB
R1 R2 OUT
VFB
Where (TJunction − TAmbient) is the temperature
differential between the junction and the
surrounding environment, θJA is the thermal
resistance from the junction to the ambient
environment. Connecting the exposed GND pad
to a large ground pad or plane helps to channel
away heat.
For example, for a 1.1V output voltage, R2 is 1kΩ,
and R1 is 374Ω. You can select a standard 374Ω
(±1%) resistor for R1.
Power Dissipation
The power dissipation for any package depends
on the thermal resistance of the case and circuit
board, the temperature differential between the
junction and ambient air, and the rate of air flow.
The power dissipation across the device can be
represented by the equation:
External Reverse Voltage Protection
In some situations, e.g. a backup battery is
connected as MP20056 load, the output voltage
may be held up while the input is either pulled to
ground to some intermediated voltage or is
floating. Thus, the output voltage is higher than
input voltage. Since MP20056 internal PMOS
pass element has a body diode, a current will
conduct from the output to input and is not
internally limited. It’s possible that the IC will be
damaged by this unlimited reverse current. To
avoid this, it’s recommended to place an external
diode at input like below.
MP20056
P VIN VOUT IOUT
The allowable power dissipation can
calculated using the following equation:
be
P(MAX) TJunction TAmbient / JA
MP20056 Rev.1.12
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13
MP20056 – LOW-NOISE, HIGH-PSRR, 250mA LINEAR REGULATOR
TYPICAL APPLICATION CIRCUITS
U1
VIN
GND
2.2V - 5.5V
R3
100k
3
4 IN
IN
7
MP20056-G
VOUT
GND
C3
470pF
NC
FB 8
2 EN
EN
1.8V
5
OUT 6
OUT
GND
1
Figure 3: 1.8V Fixed Output Application (QFN-8L)
U1
VIN
GND
EN
3.7V - 5.5V
1
IN
OUT
3.3V
5
MP20056-J
VOUT
GND
R1
100k
C3
NS
FB 4
3 EN
GND
2
Figure 4: 3.3V Fixed Output Application (TSOT23-5L)
MP20056
Figure 5: 2.5V Fixed Output Application (TSOT23-5L)
MP20056 Rev.1.12
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11/12/2019
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MP20056 – LOW-NOISE, HIGH-PSRR, 250mA LINEAR REGULATOR
PACKAGE INFORMATION
QFN-8 (2mm×2mm)
PIN 1 ID
MARKING
1.90
2.10
0.25
0.45
0.18
0.30
1.90
2.10
PIN 1 ID
INDEX AREA
PIN 1 ID
SEE DETAIL A
0.45
0.65
8
1
1.05
1.25
0.50
BSC
5
TOP VIEW
4
BOTTOM VIEW
0.80
1.00
PIN 1 ID OPTION A
R0.20 TYP.
PIN 1 ID OPTION B
R0.20 TYP.
0.20 REF
0.00
0.05
SIDE VIEW
DETAIL A
NOTE:
1.90
0.70
0.60
1) ALL DIMENSIONS ARE IN MILLIMETERS.
2) EXPOSED PADDLE SIZE DOES NOT INCLUDE MOLD FLASH.
3) LEAD COPLANARITY SHALL BE 0.10 MILLIMETER MAX.
4) DRAWING CONFORMS TO JEDEC MO-229, VARIATION VCCD-3.
5) DRAWING IS NOT TO SCALE.
0.25
1.20
0.50
RECOMMENDED LAND PATTERN
MP20056 Rev.1.12
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MP20056 – LOW-NOISE, HIGH-PSRR, 250mA LINEAR REGULATOR
PACKAGE INFORMATION
TSOT23-5
NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.
Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS
products into any application. MPS will not assume any legal responsibility for any said applications.
MP20056 Rev.1.12
www.MonolithicPower.com
11/12/2019
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