MP20049DC-2.8-LF - Monolithic Power Systems, Inc.

MP20049

Ultra-Low Noise, High PSRR

150mA Linear Regulator in 0.8x0.8mm WLCSP

MP20049 Rev. 1.1 www.MonolithicPower.com 1

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The Future of Analog IC Technology

DESCRIPTION

The MP20049 is an ultra-low noise, low-dropout,

high PSRR linear regulator. Fixed output

voltage options are available between 1.2V to

4.5V with 1% accuracy while operating from a

+2.3V to +6V input. It is designed to deliver up

to 150mA of load current. Dropout voltage is

only 60mV at full load.

The MP20049 uses an internal PMOS as the

pass element, which consumes 50µA supply

current at no load condition and is suitable for

battery-power devices. New innovative design

techniques enable the MP20049 to achieve

ultra-low output voltage noise of only 16µVRMS

without a noise bypass capacitor.

The MP20049 is designed and optimized to

work with low value, low cost ceramic

capacitors. It typically requires only 1µF of

output capacitance for stability with any load.

The MP20049 features current limit and over

temperature protection and is available in a tiny

4-ball 0.8x0.8mm WLCSP package.

FEATURES

• Linear Regulator in 0.8x0.8mm WLCSP

• Input Voltage Range: 2.3V to 6V

• Up to 150mA Output Current

• 16µVRMS Output Noise (100Hz to 100kHz)

with No Bypass Capacitor required

• High PSRR:

• 78dB @1kHz

• 55dB @100kHz

• Low Dropout:

• 50mV @120mA Load

• 60mV @150mA Load

• Stable with 1µF Ceramic Capacitor for Any

Load

• Very Fast Line/Load Transient Response

• Current Limit and Thermal Protection

APPLICATIONS

• Cellular Mobile Phones

• Digital Cameras

• Handheld and Battery-powered Equipment

• Wireless LAN

• Post DC-to-DC Regulation

“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

VIN VOUT

EN GND

VIN

MP20049

VOUT

MP20049 – ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP

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ORDERING INFORMATION

Part Number* Package VOUT(V) Top Marking Free Air Temperature (TA)

MP20049DC-2.8** WLCSP

(0.8x0.8mm) 2.8 TCO -40°C to +125°C

* For Tape & Reel, add suffix –Z (e.g. MP20049DC–Z);

For RoHS, compliant packaging, add suffix –LF (e.g. MP20049DC–LF–Z).

** Contact factory for other fixed Output Options.

ORDERING GUIDE**

PACKAGE REFERENCE

VIN VOUT

EN GND

TOP VIEW

(Not to Scale)

0.8x0.8mm WLCSP

ABSOLUTE MAXIMUM RATINGS (1)

Supply Input Voltage ................................ 6.5V

Continuous Power Dissipation (TA = +25°C) (2)

WLCSP ................................................. 0.37W

Storage Temperature Range .... -65°C to 150°C

Lead Temperature (Soldering, 10sec) ....300°C

ESD SUSCEPTIBILITY (3)

HBM (Human Body Mode) ..........................2kV

MM (Machine Mode) ................................ 200V

Recommended Operating Conditions (4)

Supply Input Voltage ......................2.3V to 6.0V

Enable Input Voltage ........................0V to 5.5V

Operating Junct. Temp (TJ)...... -40°C to +125°C

Thermal Resistance (5) θJA θJC

WLCSP.................................. 330 ..... n/a .. °C/W

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-to-

ambient thermal resistance JA, and the ambient temperature

TA. The maximum allowable continuous power dissipation at

any ambient temperature is calculated by PD (MAX) = (TJ

(MAX)-TA)/JA. Exceeding the maximum allowable powe

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.

MP20049 – ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP

MP20049 Rev. 1.1 www.MonolithicPower.com 3

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ELECTRICAL CHARACTERISTICS

VIN = (VOUT + 0.5V) or 2.5 V (whichever is greater), EN = VIN, IOUT = 10mA, CIN = COUT = 1µF

TA = 25°C, unless otherwise noted.

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

(% / V)

VV V

⎡⎤ ⎡⎤

⎣⎦ ⎣⎦

−

⎡⎤

−×

⎣⎦

8) Load Regulation=

)NOM(OUT)MIN(OUT)MAX(OUT

]I[OUT]I[OUT

V*]II[

VV )MIN(OUT)MAX(OUT

−

Parameter Symbol Condition Min Typ Max Units

Input voltage range VIN 2.3 6 V

Maximum Output Current IMAX Continuous 150 mA

Output Voltage Accuracy VOUT I

OUT = 10mA -1 +1 %

Current Limit ILIM R

Load=1 165 250 380 mA

No Load(25°C) 40 55 70 µA

Ground Current IQ

No Load(-40°C<TA<85°C) 40 75 µA

VOUT = 2.8V, IOUT = 80mA

TJ=-40°C to 125°C 40 110 mV

Dropout Voltage (6) V

DROP VOUT = 2.8V, IOUT = 120mA

TJ=-40°C to 125°C 50 120 mV

Line regulation(7) V

LNR VIN=3.3v to 6v

IOUT=0.1mA -0.06 +0.06 %/V

Load regulation(8) V

LDR I

OUT=1mA to150mA 0.001 %/mA

EN Input High Threshold VIH V

IN = 3.3V to 5.5V 1.2 V

EN Input Low Threshold VIL V

IN = 3.3V to 5.5V 0.4 V

EN Input Bias Current ISD EN = VIN= 5.5V 100 300 nA

Shutdown Supply Current IGSD EN = GND 0.03 1 µA

Thermal Shutdown Temperature TSD 150 °C

Thermal Shutdown Hysteresis TSD 20 °C

Output Voltage Noise

10Hz to 100kHz,

COUT=4.7µF, Vout=1.2V

ILOAD=10mA

16 µVRMS

1kHz, COUT = 2.2µF,

ILOAD = 10mA 78 dB

10kHz , COUT = 2.2µF,

ILOAD = 10mA 75 dB

Output Voltage AC PSRR

100kHz , COUT = 2.2µF,

ILOAD = 10mA 55 dB

MP20049 – ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP

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PIN FUNCTIONS

Pin# Name Description

A1 VIN Regulator Input Supply. Bypass VIN to GND with a 1µF or greater capacitor.

B2 GND Ground Pin.

B1 EN

Enable Input. Drive EN high to turn on the Regulator; drive it low to turn off the

Regulator. For automatic startup, connect EN to VIN.

A2 VOUT

Regulated Output Voltage. Connect a 1µF or greater output capacitor between

VOUT and GND.

MP20049 – ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP

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TYPICAL PERFORMANCE CHARACTERISTICS

VIN=3.3V, VOUT=2.8V, CIN=COUT=1µF, TA=25°C, unless otherwise noted

Quiescent Current

vs. Temperature

-40 -20 0 20 40 60 80 100

TEMPERATURE(oC)

Quiescent Current

vs. Input Voltage Dropout Voltage

vs. Temperature

-40-20 0 20406080100

TEMPERATURE(oC)

DROPOUT VOL TAGE(mV)

Dropout Voltage

vs. Output Curre nt

OUTPUT CURRENT(mA)

DR OPOUT V O L T AG E (mV )

EN threshold

vs. Input Voltage

0.4

0.5

0.6

0.7

0.8

0.9

1.1

INPUT VOLTAGE(V)

(V)

EN threshold

vs. Temperature

TEMPERATURE(oC)

(V)

Current L imit

vs. Temperature

-40 -20 0 20 40 60 80 100

TEMPERATURE(oC)

CURRENT LIMIT(mA)

INPUT VOLTAGE (V)

Current L imit

vs. Input Voltage

CURRENT LIMIT(mA)

INPUT VOLTAGE (V)

Line Regulation

-0.3

-0.2

-0.1

0.0

0.1

0.2

0.3

OUTPUT VOLTAGE ACCURACY(%)

100

120

3 3.5 4 4.5 5 5.5 6

IOUT=150mA

0 25 50 75 100 125 150 3 3.5 4 4.5 5 5.5 6

EN high threshold

EN low threshold

0.5

0.55

0.6

0.65

0.7

0.75

0.8

0.85

0.9

-40 -20 0 20 40 60 80 100

EN high threshold

EN low threshold

100

200

300

400

500

100

200

300

400

500

3 3.5 4 4.5 5 5.5 6 3 3.5 4 4.5 5 5.5 6

IOUT=0A

IOUT=150mA

MP20049 – ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP

MP20049 Rev. 1.1 www.MonolithicPower.com 6

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TYPICAL PERFORMANCE CHARACTERISTICS (continued)

VIN=3.3V, VOUT=2.8V, CIN=COUT=1µF, TA=25°C, unless otherwise noted

Load Regulation

-0.06

-0.04

-0.02

0.00

0.02

0.04

0.06

OUTPUT CURRENT (mA)

Output Voltage Accuracy

vs. Temperature

OUT=150mA

-0.8

-0.6

-0.4

-0.2

0.0

0.2

0.4

0.6

0.8

-40 -20 0 20 40 60 80 100

-20

100

10 10

FREQUENCY (Hz)

PSRR (dB)

Region of Stable C

OUT

ESR

vs. Output Current

0.1

100

OUTPUT CURRENT (mA)

PSRR

IOUT=10mA, 50mA, 100mA, 150mA

f ranges from 10Hz to 10MHz

0 25 50 75 100 125 150

Unstable Range

Stable Range

OUT=10mA

IOUT=50mA

IOUT=150mA

IOUT=100mA

MP20049 – ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP

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TYPICAL PERFORMANCE CHARACTERISTICS (continued)

VIN=3.3V, VOUT=2.8V, CIN=COUT=1µF, TA=25°C, unless otherwise noted

100ms/div

Line Transient

=2.5V to 5V, I

OUT

=60mA,

with Resistor Load

Load Transient

OUT

=1mA to 65mA,

with Resistor Load

Over Current Protection

Entry

100ms/div

Over Current Protection

Recovery

IOUT

100mA/div

IOUT

100mA/div

VEN

5V/div

VOUT

2V/div

IOUT

100mA/div

VEN

5V/div

VOUT

100mV/div

IOUT

20mA/div

VOUT

2V/div

IOUT

200mA/div

VIN

2V/div

VOUT

2V/div

IOUT

200mA/div

VIN

2V/div

VOUT

2V/div

VIN

2V/div

VOUT

2V/div

IOUT

200mA/div

VIN

2V/div

VOUT

2V/div

IOUT

100mA/div

VIN

2V/div

VOUT

2V/div

Input Power Start Up

OUT

=150mA, with Resistor Load

EN Start Up

OUT

=150mA, with Resistor Load

EN Shutdown

OUT

=150mA, with Resistor Load

Input Power Shutdown

OUT

=150mA, with Resistor Load

20ms/div 20ms/div

100ms/div

Over Current Protection

Steady State

IOUT

50mA/div

VIN

2V/div

VOUT

100mV/div

MP20049 – ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP

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OPERATION

The MP20049 is an ultra low noise, low

dropout, low quiescent current and high PSRR

linear regulator for space-restricted

applications. It is intended for use in devices

that require very low voltage, and ultra-small

footprint, such as mobile phone and MP3

players.

The MP20049 uses an internal PMOS as the

pass elements and features internal thermal

shutdown and internal current limit circuits.

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. It determines the available end-

of-life battery voltage in battery-powered

systems. For the P-channel MOSFET pass

element, the dropout voltage is a function of

drain to source on resistance. Because the P-

channel MOSFET pass element behaves as a

low-value resistor, the dropout voltage of

MP20049 is very low.

Under Voltage Lockout

The MP20049 has an internal under-voltage

lockout circuit that disables the device when the

input voltage is less than approximately 2.3V.

This ensures that the input and the output of the

MP20049 behave in a predictable manner

during input power-up.

Enable ON/Off

The MP20049 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 and Thermal Protection

The MP20049 includes an independent current

limit structure which monitors and controls the

P-channel MOSFET’s gate voltage to limit the

guaranteed maximum output current to 150mA.

Thermal protection turns off the P-channel

MOSFET when the junction temperature

exceeds +150ºC, allowing the IC to cool. When

the IC’s junction temperature drops by 20ºC,

the PMOS will be turned on again. Thermal

protection limits total power dissipation in the

MP20049. For reliable operation, junction

temperature should be limited to 125ºC

maximum.

MP20049 – ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP

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FUNCTIONAL BLOCK DIAGRAM

1.23V

Reference

Enable

Control

1.23V Error

Amp

Vref

Filter

Thermal

Sensor

GND

VOUT

VIN

Figure 1—Functional Block Diagram

MP20049 – ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP

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APPLICATION INFORMATION

Power Dissipation

The power dissipation for any package depends

on the thermal resistance of the case and circuit

board, the temperature difference between the

junction and ambient air, and the rate of airflow.

The power dissipation across the device can be

represented by the equation:

P = (VIN - VOUT) ×IOUT

The allowable power dissipation can be

calculated using the following equation:

P(MAX) = (TJunction - TAmbient) / JA

Where (TJunction - TAmbient) is the temperature

difference between the junction and the

surrounding environment, JA is the thermal

resistance from the junction to the ambient

environment. Connecting the GND pin of

MP20049 to ground with a large ground plane

will help the channel heat away.

Input Capacitor Selection

Using a capacitor whose value is >1µF on the

MP20049 input and the amount of capacitance

can be increased without limit. Larger values

will help to improve line transient response with

the drawback of increased size. Ceramic

capacitors are preferred, but tantalum

capacitors may also suffice.

Output Capacitor Selection

The MP20049 is designed specifically to work

with very low ESR ceramic output capacitor in

space-limiting and performance consideration.

Output capacitor of larger values will help to

improve load transient response and reduce

noise with the drawback of increased size. For

the application circuit, the MP20049 requires a

minimum capacitance of 0.7µF with an ESR of

1 or less.

Output Noise and PSRR

For MP20049, an internal 50pF bypass

capacitor with new innovative structure reduces

output noises greatly, without the need for an

external bypass capacitor. The power supply

rejection is 75dB at 10kHz and 55dB at 100kHz.

MP20049 – ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP

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.

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PACKAGE INFORMATION WLCSP

TOP VIEW

BOTTOM VIEW

0.78

0.86

0.78

0.86 0.40

BSC

PIN 1 ID

MARKING

0.40

0.20

RECOMMENDED LAND PATTERN

NOTE:

1) ALL DIMENSIONS ARE IN MILLIMETERS.

2) BALL COPLANARITY SHALL BE 0.05 MILLIMETER MAX.

3) JEDEC REFERENCE IS MO-211, VARIATION AA.

4) DRAWING IS NOT TO SCALE.

0.40

BSC

PIN 1 ID

INDEX AREA

SIDE VIEW

0.17

0.23

0.40

0.24

0.28

0.55

0.65