MIC5310-SJYML [MICREL]

Dual 150mA μCap LDO in 2mm x 2mm MLF?; 双150毫安μCap LDO采用2mm x 2mm MLF ？


型号：	MIC5310-SJYML
厂家：	MICREL SEMICONDUCTOR
描述：	Dual 150mA μCap LDO in 2mm x 2mm MLF? 双150毫安μCap LDO采用2mm x 2mm MLF ？
文件：	总11页 (文件大小：346K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

MIC5310

Dual 150mA µCap LDO in 2mm x 2mm MLF^®

General Description

Features

The MIC5310 is a tiny Dual Ultra Low Dropout

(ULDO™) linear regulator ideally suited for portable

electronics due to its high power supply ripple

rejection (PSRR) and ultra low output noise. The

MIC5310 integrates two high-performance 150mA

ULDOs into a tiny 2mm x 2mm leadless MLF^®

package, which provides exceptional thermal package

characteristics.

• 2.3V to 5.5V input voltage range

• Ultra-low dropout voltage ULDO™ 35mV @ 150mA

• High PSRR - >70dB @ 1KHz

• Ultra-low output noise: 30µV_RMS

• ±2% initial output accuracy

• Tiny 8-pin 2mm x 2mm MLF^®leadless package

• Excellent Load/Line transient response

• Fast start up time: 30µs

The MIC5310 is a µCap design which enables

operation with very small ceramic output capacitors

for stability, thereby reducing required board space

and component cost. The combination of extremely

low-drop-out voltage, high power supply rejection and

exceptional thermal package characteristics makes it

ideal for powering RF/noise sensitive circuitry, cellular

phone camera modules, imaging sensors for digital

still cameras, PDAs, MP3 players and WebCam

applications

• µCap stable with 1µF ceramic capacitor

• Thermal shutdown protection

• Low quiescent current: 75µA per output

• Current limit protection

Applications

• Mobile phones

The MIC5310 ULDO™ is available in fixed-output

voltages in the tiny 8-pin 2mm x 2mm leadless MLF^®

package which occupies less than half the board area

of a single SOT-6 package. Additional voltage options

are available. For more information, contact Micrel

marketing department.

• PDAs

• GPS receivers

• Portable electronics

• Portable media players

• Digital still and video cameras

Data sheets and support documentation are found on

the Micrel web site www.micrel.com.

Typical Application

ULDO is a trademark of Micrel, Inc.

MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

M9999-032411-C

March 2011

Micrel, Inc.

MIC5310

RF Power Supply Circuit

Block Diagram

MIC5310 Fixed Block Diagram

M9999-032411-C

March 2011

Micrel, Inc.

MIC5310

Ordering Information

Functional

Part number

Ordering

Part Number

Junction

Temperature Range

Marking¹

GFZ

GGZ

GWZ

JGZ

JJZ

V_OUT1/V_OUT2

Package³

MIC5310-1.8/1.5YML

MIC5310-1.8/1.8YML

MIC5310-1.8/1.6YML

MIC5310-2.5/1.8YML

MIC5310-2.5/2.5YML

MIC5310-2.6/1.85YML

MIC5310-2.6/1.8YML

MIC5310-2.7/2.7YML

MIC5310-2.8/1.5YML

MIC5310-2.8/1.8YML

MIC5310-2.8/2.6YML

MIC5310-2.8/2.8YML

MIC5310-2.85/1.85YML

MIC5310-2.85/2.6YML

MIC5310-2.85/2.85YML

MIC5310-2.9/1.5YML

MIC5310-2.9/1.8YML

MIC5310-2.9/2.9YML

MIC5310-3.0/1.8YML

MIC5310-3.0/2.5YML

MIC5310-3.0/2.6YML

MIC5310-3.0/2.8YML

MIC5310-3.0/2.85YML

MIC5310-3.0/3.0YML

MIC5310-3.3/1.5YML

MIC5310-3.3/1.8YML

MIC5310-3.3/2.5YML

MIC5310-3.3/2.6YML

MIC5310-3.3/2.8YML

MIC5310-3.3/2.85YML

MIC5310-3.3/2.9YML

MIC5310-3.3/3.0YML

MIC5310-3.3/3.2YML

MIC5310-3.3/3.3YML

MIC5310-GFYML

MIC5310-GGYML

MIC5310-GWYML

MIC5310-JGYML

MIC5310-JJYML

MIC5310-KDYML

MIC5310-KGYML

MIC5310-LLYML

MIC5310-MFYML

MIC5310-MGYML

MIC5310-MKYML

MIC5310-MMYML

MIC5310-NDYML

MIC5310-NKYML

MIC5310-NNYML

MIC5310-OFYML

MIC5310-OGYML

MIC5310-OOYML

MIC5310-PGYML

MIC5310-PJYML

MIC5310-PKYML

MIC5310-PMYML

MIC5310-PNYML

MIC5310-PPYML

MIC5310-SFYML

MIC5310-SGYML

MIC5310-SJYML

MIC5310-SKYML

MIC5310-SMYML

MIC5310-SNYML

MIC5310-SOYML

MIC5310-SPYML

MIC5310-SRYML

MIC5310-SSYML

1.8V/1.5V

1.8V/1.8V

1.8V/1.6V

2.5V/1.8V

2.5V/2.5V

2.6V/1.85

2.6V/1.8V

2.7V/2.7V

2.8V/1.5V

2.8V/1.8V

2.8V/2.6V

2.8V/2.8V

2.85V/1.85V

2.85V/2.6V

2.85V/2.85V

2.9V/1.5V

2.9V/1.8V

2.9V/2.9V

3.0V/1.8V

3.0V/2.5V

3.0V/2.6V

3.0V/2.8V

3.0V/2.85V

3.0V/3.0V

3.3V/1.5V

3.3V/1.8V

3.3V/2.5V

3.3V/2.6V

3.3V/2.8V

3.3V/2.85V

3.3V/2.9V

3.3V/3.0V

3.3V/3.2V

3.3V/3.3V

–40°C to +125°C

8-Pin 2x2 MLF^®

KDZ

KGZ

LLZ

MFZ

MGZ

MKZ

MMZ

NDZ

NKZ

NNZ

OFZ

OGZ

OOZ

PGZ

PJZ

PKZ

PMZ

PNZ

PPZ

SFZ

SGZ

SJZ

SKZ

SMZ

SNZ

SOZ

SPZ

SRZ

SSZ

Notes:

1. Over bar symbol ( ¯ ) may not be to scale. Over bar at Pin 1.

2. Other voltage options available. Contact Micrel for more details.

3. MLF® is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.

M9999-032411-C

March 2011

Micrel, Inc.

MIC5310

Pin Configuration

8-Pin 2mm x 2mm MLF (ML)

Top View

Pin Description

Pin Number

Pin Name

VIN

Pin Function

Supply Input.

Ground

GND

BYP

Reference Bypass: Connect external 0.1µF to GND to reduce output noise.

May be left open when bypass capacitor is not required.

EN2

EN1

Enable Input (regulator 2). Active High Input. Logic High = On; Logic Low = Off;

Do not leave floating.

Enable Input (regulator 1). Active High Input. Logic High = On; Logic Low = Off;

Do not leave floating.

–

VOUT2

VOUT1

Not internally connected

Regulator Output – LDO2

Regulator Output – LDO1

Exposed Pad. Connect EP to GND.

M9999-032411-C

March 2011

Micrel, Inc.

MIC5310

Absolute Maximum Ratings⁽¹⁾

Operating Ratings⁽²⁾

Supply Voltage (V_IN).....................................0V to +6V

Enable Input Voltage (V_EN)...........................0V to +6V

Power Dissipation...........................Internally Limited⁽³⁾

Lead Temperature (soldering, 3sec ...................260°C

Storage Temperature (T_S)................. -65°C to +150°C

ESD Rating⁽⁴⁾.........................................................2kV

Supply voltage (V_IN)............................... +2.3V to +5.5V

Enable Input Voltage (V_EN).............................. 0V to V_IN

Junction Temperature .........................-40°C to +125°C

Junction Thermal Resistance

MLF-8 (θ_JA) ............................................... 90°C/W

Electrical Characteristics⁽⁵⁾

V_IN= EN1 = EN2 = V_OUT+ 1.0V; higher of the two regulator outputs, I_OUTLDO1= I_OUTLDO2= 100µA; C_OUT1= C_OUT2= 1µF;

C_BYP= 0.1µF; T_J= 25°C, bold values indicate –40°C ≤ T_J≤ +125°C, unless noted.

Parameter

Conditions

Min

-2.0

-3.0

Typ

Max

+2.0

+3.0

Units

Output Voltage Accuracy

Variation from nominal V_OUT

Variation from nominal V_OUT; –40°C to +125°C

Line Regulation

V_IN= V_OUT+ 1V to 5.5V; I_OUT= 100µA

0.02

0.3

0.6

%/V

Load Regulation

I_OUT= 100µA to 150mA

I_OUT= 100µA

0.5

0.1

2.0

Dropout Voltage (Note 6)

µA

_OUT= 50mA

_OUT= 100mA

_OUT= 150mA

100

120

190

Ground Current

EN1 = High; EN2 = Low; I_OUT= 100µA to 150mA

EN1 = Low; EN2 = High; I_OUT= 100µA to 150mA

EN1 = EN2 = High; I_OUT1= 150mA, I_OUT2= 150mA

EN1 = EN2 = 0V

150

0.01

Ground Current in Shutdown

Ripple Rejection

f = 1kHz; C_OUT= 1.0µF; C_BYP= 0.1µF

f = 20kHz; C_OUT= 1.0µF; C_BYP= 0.1µF

Current Limit

V_OUT= 0V

300

1.1

550

950

0.2

Output Voltage Noise

Enable Inputs (EN1 / EN2)

Enable Input Voltage

C_OUT= 1.0 µF; C_BYP= 0.1µF; 10Hz to 100kHz

µV_RMS

Logic Low

Logic High

V_IL≤ 0.2V

V_IH≥ 1.0V

Enable Input Current

0.01

µA

Turn-on Time (See Timing Diagram)

Turn-on Time (LDO1 and 2)

C_OUT= 1.0µF; C_BYP= 0.01µF

100

µs

Notes:

1. Exceeding the absolute maximum rating may damage the device.

2. The device is not guaranteed to function outside its operating rating.

3. The maximum allowable power dissipation of any T_A(ambient temperature) is P_D(max)= (T_J(max)– T_A) / θ_JA. Exceeding the maximum allowable

power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.

4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.

5. Specification for packaged product only.

6. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal V_OUT. For outputs below

2.3V, the dropout voltage is the input-to-output differential with the minimum input voltage 2.3V.

M9999-032411-C

March 2011

Micrel, Inc.

MIC5310

Typical Characteristics

Ground Current vs. Temperature

MIC5310 - Output Noise

Dropout Voltage

Spectral Density

150 mA

100 mA

0.1

V_in=V_out+1

_in= V_out+ 1V

_out=1uF

50 mA

EN1 = V , EN2 =

_{by p}=0.01u

V =V_out+1

GND

0.01

100 uA

V_out=3V

V_out= 3V

=3V

_out=1uF

C_out= 1 uF

0.001

100

1,000 10,000 100,00 1,000,0 10,000,

-40

-20

100 120

100

120

140

000

Temperature (°C)

Frequency (Hz)

Iout (mA)

•

Output Voltage

Output Voltage vs Output

Current

Dropout Characteristics

3.3

3.2

3.1

3.2

3.15

3.1

3.5

2.5

3.05

100uA

2.95

2.9

150mA

_in= V_out+ 1V

_in= EN1 = EN2

_out= 3V

I_out= 100 uA

_out= 1 uF

1.5

2.9

2.8

2.7

2.85

2.8

V_in=V_out+1

C_out=1uF

_out=3V

0.5

2.75

2.7

C_out=1uF

-40 -20

80 100 120

100

125

150

Temperature (°C)

Output Current (mA)

Input Voltage (V)

Dropout Voltage

Ground Current vs Output

Current

Current Limit vs. Input Voltage

600

580

560

540

520

500

480

460

440

420

400

V_out= 3 V

_in= V_out+ 1 V

1_50mA

V_in= EN1 = EN2

_out= 1 uF

100_mA

V_out=3V

V =V_out+1V

Ven1=V_en2=V

50 mA

C_out1=C_out2=1uF

C_out=1uF

_en=V

100u_A

10mA

100

125

150

-60 -40 -20

20 40 60 80 100 120 140

Temperature (°C)

Output Current (mA)

Input Voltage (V)

M9999-032411-C

March 2011

Micrel, Inc.

MIC5310

Typical Characteristics (Continued)

Power Supply Rejection Ratio

-80

-70

-60

-50

-40

-30

-20

-10

-80

-70

-60

-50

-40

-30

-20

-10

V = 3.4V

_out=3V

_out=1uF

_out=50mA

V_in= 3.6V

V_out=3V

C_out=1uF

_byp=0.1uF

I_out=150mA

C_{by p}=0.1uF

1,000

100

1,000

10,000

100,000

1,000,000

100

10,000

100,000

1,000,000

Frequency (Hz)

M9999-032411-C

March 2011

Micrel, Inc.

MIC5310

Functional Characteristics

M9999-032411-C

March 2011

Micrel, Inc.

MIC5310

Applications Information

Enable/Shutdown

Bypass Capacitor

The MIC5310 comes with dual active-high enable pins

that allow each regulator to be enabled independently.

Forcing the enable pin low disables the regulator and

sends it into a “zero” off mode current state. In this

state, current consumed by the regulator goes nearly

to zero. Forcing the enable pin high enables the

output voltage. The active high enable pin uses

CMOS technology and the enable pin cannot be left

floating; a floating enable pin may cause an

indeterminate state on the output.

A capacitor can be placed from the noise bypass pin

to ground to reduce output voltage noise. The

capacitor bypasses the internal reference. A 0.1µF

capacitor is recommended for applications that require

low-noise outputs. The bypass capacitor can be

increased, further reducing noise and improving

PSRR. Turn on time increases slightly with respect to

bypass capacitance. A unique, quick start circuit

allows the MIC5310 to drive a large capacitor on the

bypass pin without significantly slowing turn on time.

Input Capacitor

No-Load Stability

The MIC5310 is a high-performance, high bandwidth

device. Therefore, it requires a well bypassed input

supply for optimal performance. A 1µF capacitor is

required from the input to ground to provide stability.

Low ESR ceramic capacitors provide optimal

performance at a minimum of space. Additional high

frequency capacitors, such as small valued NPO

dielectric type capacitors, help filter out high frequency

noise and are good practice in any RF based circuit.

Unlike many other voltage regulators, the MIC5310

will remain stable and in regulation with no load. This

is especially important in CMOS RAM keep alive

applications.

Thermal Considerations

The MIC5310 is designed to provide 150mA of

continuous current for both outputs in a very small

package. Maximum ambient operating temperature

can be calculated based on the output current and the

voltage drop across the part. Given that the input

Output Capacitor

The MIC5310 requires an output capacitor of 1µF or

greater to maintain stability. The design is optimized

for use with low ESR ceramic chip capacitors. High

ESR capacitors may cause high frequency oscillation.

The output capacitor can be increased, but

performance has been optimized for a 1µF ceramic

output capacitor and does not improve significantly

with larger capacitance.

voltage is 3.3V, the output voltage is 2.8V for V_OUT1

1.5V for V_OUT2and the output current = 150mA. The

actual power dissipation of the regulator circuit can be

determined using the equation:

P_D= (V_IN– V_OUT1) I_OUT1+ (V_IN– V_OUT2) I_OUT2+ V_INI_GND

Because this device is CMOS and the ground current

is typically <100µA over the load range, the power

dissipation contributed by the ground current is < 1%

and can be ignored for this calculation.

X7R/X5R dielectric type ceramic capacitors are

recommended because of their temperature

P_D= (3.3V – 2.8V) × 150mA + (3.3V -1.5) × 150mA

P_D= 0.345W

performance.

X7R

type

capacitors

change

capacitance by 15% over their operating temperature

range and are the most stable type of ceramic

capacitors. Z5U and Y5V dielectric capacitors change

value by as much as 50% and 60%, respectively, over

their operating temperature ranges. To use a ceramic

chip capacitor with Y5V dielectric, the value must be

much higher than an X7R ceramic capacitor to ensure

the same minimum capacitance over the equivalent

operating temperature range.

To determine the maximum ambient operating

temperature of the package, use the junction-to-

ambient thermal resistance of the device and the

following basic equation:

T_J(MAX)- T_A

⎛

⎝

P_D(MAX)

T_J(max)= 125°C, the maximum junction temperature of

the die θ_JAthermal resistance = 90°C/W.

The table below shows junction-to-ambient thermal

resistance for the MIC5310 in different packages.

M9999-032411-C

March 2011

Micrel, Inc.

MIC5310

For example, when operating the MIC5310-MFYML at

an input voltage of 3.3V and 150mA loads at each

output with a minimum footprint layout, the maximum

ambient operating temperature T_Acan be determined

as follows:

θ_JARecommended

Minimum Footprint

Package

8-Pin 2x2 MLF^®

90°C/W

Thermal Resistance

0.345W = (125°C – T_A)/(90°C/W)

T_A= 93.95°C

Substituting P_Dfor P_D(max)and solving for the ambient

operating temperature will give the maximum

operating conditions for the regulator circuit. The

junction-to-ambient thermal resistance for the

minimum footprint is 90°C/W.

Therefore, a 2.8V/1.5V application with 150mA at

each output current can accept an ambient operating

temperature of 93.95°C in a 2mm x 2mm MLF^®

package. For a full discussion of heat sinking and

thermal effects on voltage regulators, refer to the

“Regulator Thermals” section of Micrel’s Designing

with Low-Dropout Voltage Regulators handbook. This

information can be found on Micrel's website at:

The maximum power dissipation must not be

exceeded for proper operation.

http://www.micrel.com/_PDF/other/LDOBk_ds.pdf

M9999-032411-C

March 2011

Micrel, Inc.

MIC5310

Package Information

8-Pin 2mm x 2mm MLF (ML)

MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA

TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com

Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. This

information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry,

specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual

property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability

whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties

relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right.

Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product

can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant

into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A

Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully

indemnify Micrel for any damages resulting from such use or sale.

M9999-032411-C

March 2011

MIC5310-SJYML [MICREL]

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