MIC5335-SOYMT - Micrel - Datasheet.Directory

MIC5335

Dual, High Performance

300mA µCap ULDO™

ULDO is a trademark of Micrel, Inc.

MLF and MicroLead Frame are registered trademarks of Amkor Technologies.

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

May 2008

M9999-051508

General Description

The MIC5335 is a high current density, dual Ultra Low

Dropout (ULDO™) linear regulator. The MIC5335 is

ideally suited for portable electronics which demand

overall high performance in a very small form factor.

The MIC5335 is offered in the ultra small 1.6mm x

1.6mm x 0.55mm 6-ld Thin MLF

package, which is

only 2.56mm

in area. The MIC5335 delivers

exceptional thermal performance for those

applications that demand higher power dissipation in

a very small foot print. In addition, the MIC5335

integrates two high performance 300mA LDOs with

independent enable functions and offers high PSRR

eliminating the need for a bypass capacitor.

The MIC5335 is a µCap design which enables

operation with very small output capacitors for

stability, thereby reducing required board space and

component cost.

The MIC5335 is available in fixed-output voltages.

Additional voltages are available. For more

information, contact Micrel’s Marketing department.

Data sheets and support documentation can be found

on Micrel’s web site at: www.micrel.com.

Features

• 2.3V to 5.5V input voltage range

• Ultra-low dropout voltage: 75mV at 300mA

• Ultra Small 1.6mm x 1.6mm x 0.55mm 6 lead MLF

package

• Independent enable pins

• High PSRR > 65dB @ 1kHz

• 300mA output current per LDO

• µCap Stable with 1µF ceramic capacitor

• Low quiescent current: 90µA/LDO

• Fast turn-on time: 30µs

• Thermal Shutdown Protection

• Current Limit Protection

Applications

• Mobile Phones

• PDAs

• GPS Receivers

• Portable electronics

• Portable media players

• Digital still and video cameras

Typical Application

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MIC5335 Block Diagram

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Ordering Information

Part number Manufacturing

Part Number Marking Voltage* Junction

Temp. Range Package

MIC5335-1.8/1.5YMT MIC5335-GFYMT GPF 1.8V/1.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-1.8/1.6YMT MIC5335-GWYMT GPW 1.8V/1.6V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-1.8/1.8YMT MIC5335-GGYMT GPG 1.8V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-2.5/1.8YMT MIC5335-JGYMT JPG 2.5V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-2.5/2.5YMT MIC5335-JJYMT JPJ 2.5V/2.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-2.6/1.85YMT MIC5335-KDYMT KPD 2.6V/1.85 –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-2.6/1.8YMT MIC5335-KGYMT KPG 2.6V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-2.7/2.7YMT MIC5335-LLYMT LPL 2.7V/2.7V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-2.8/1.5YMT MIC5335-MFYMT MPF 2.8V/1.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-2.8/1.8YMT MIC5335-MGYMT MPG 2.8V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-2.8/2.6YMT MIC5335-MKYMT MPK 2.8V/2.6V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-2.8/2.8YMT MIC5335-MMYMT MPM 2.8V/2.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-2.85/1.85YMT MIC5335-NDYMT NPD 2.85V/1.85V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-2.85/2.6YMT MIC5335-NKYMT NPK 2.85V/2.6V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-2.85/2.85YMT MIC5335-NNYMT NPN 2.85V/2.85V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-2.9/1.5YMT MIC5335-OFYMT OPF 2.9V/1.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-2.9/1.8YMT MIC5335-OGYMT OPG 2.9V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-2.9/2.9YMT MIC5335-OOYMT OPO 2.9V/2.9V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-3.0/1.8YMT MIC5335-PGYMT PPG 3.0V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-3.0/2.5YMT MIC5335-PJYMT PPJ 3.0V/2.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-3.0/2.6YMT MIC5335-PKYMT PPK 3.0V/2.6V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-3.0/2.8YMT MIC5335-PMYMT PPM 3.0V/2.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-3.0/2.85YMT MIC5335-PNYMT PPN 3.0V/2.85V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-3.0/3.0YMT MIC5335-PPYMT PPP 3.0V/3.0V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-3.3/1.5YMT MIC5335-SFYMT SPF 3.3V/1.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-3.3/1.8YMT MIC5335-SGYMT SPG 3.3V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-3.3/2.5YMT MIC5335-SJYMT SPJ 3.3V/2.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-3.3/2.6YMT MIC5335-SKYMT SPK 3.3V/2.6V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-3.3/2.7YMT MIC5335-SLYMT SPL 3.3V/2.7V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-3.3/2.8YMT MIC5335-SMYMT SPM 3.3V/2.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-3.3/2.85YMT MIC5335-SNYMT SPN 3.3V/2.85V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-3.3/2.9YMT MIC5335-SOYMT SPO 3.3V/2.9V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-3.3/3.0YMT MIC5335-SPYMT SPP 3.3V/3.0V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-3.3/3.2YMT MIC5335-SRYMT SPR 3.3V/3.2V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

MIC5335-3.3/3.3YMT MIC5335-SSYMT SPS 3.3V/3.3V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF

Note:

* For other voltages available. Contact Micrel Marketing for details.

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Pin Configur ation

1VIN

GND

EN2

6 VOUT1

VOUT2

EN1

6-pin 1.6mm × 1.6mm Thin MLF

Top View

Pin Description

Pin Number

Thin MLF-6 Pin Name

Pin Function

1 VIN Supply Input.

2 GND Ground

3 EN2

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

Do not leave floating.

4 EN1

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

Do not leave floating.

5 VOUT2 Regulator Output – LDO2

6 VOUT1 Regulator Output – LDO1

HS Pad EPAD Exposed heatsink pad connected to ground internally.

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Absolute Maximum Ratings(1)

Supply Voltage (V

) .....................................0V to +6V

Enable Input Voltage (V

)...........................0V to +6V

Power Dissipation...........................Internally Limited

(3)

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

Storage Temperature (T

)................. -65°C to +150°C

ESD Rating

(4)

.........................................................2kV

Operating Ratings(2)

Supply voltage (V

)............................... +2.3V to +5.5V

Enable Input Voltage (V

).............................. 0V to V

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

Junction Thermal Resistance

Thin MLF

-6 (θ

) ................................... 100°C/W

Electrical Characteristics(5)

= EN1 = EN2 = V

OUT

+ 1.0V; higher of the two regulator outputs, I

OUTLDO1

= I

OUTLDO2

= 100µA; C

OUT1

= C

OUT2

= 1µF;

= 25°C, bold values indicate –40°C ≤ T

≤ +125°C, unless noted.

Parameter Conditions Min Typ Max Units

Variation from nominal V

OUT

-2.0 +2.0 % Output Voltage Accuracy

Variation from nominal V

OUT

; –40°C to +125°C -3.0 +3.0 %

Line Regulation V

= V

OUT

+ 1V to 5.5V; I

OUT

= 100µA 0.02 0.3

0.6

%/V

Load Regulation I

OUT

= 100µA to 300mA 0.3 2.0 %

Dropout Voltage (Note 6) I

OUT

= 100µA

OUT

= 100mA

OUT

= 150mA

OUT

= 300mA

0.1

100

200

Ground Current EN1 = High; EN2 = Low; I

OUT

= 100µA to 300mA

EN1 = Low; EN2 = High; I

OUT

= 100µA to 300mA

EN1 = EN2 = High; I

OUT1

= 300mA, I

OUT2

= 300mA

150

125

220

µA

Ground Current in Shutdown EN1 = EN2 = 0V 0.01 2 µA

Ripple Rejection f = 1kHz; C

OUT

= 1.0µF

f = 20kHz; C

OUT

= 1.0µF

Current Limit V

OUT

= 0V 340 550 950 mA

Output Voltage Noise C

OUT

= 1.0µF; 10Hz to 100kHz 90 µV

RMS

Enable Inputs (EN1 / EN2)

Logic Low 0.2 V Enable Input Voltage

Logic High 1.1 V

≤ 0.2V 0.01 1 µA Enable Input Current

≥ 1.0V 0.01 1 µA

Turn-on Time (See Timing Diagram)

Turn-on Time (LDO1 and 2) C

OUT

= 1.0µF 30 100 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

(ambient temperature) is P

D(max)

= (T

J(max)

– T

) / θ

. 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.

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Typical Characteristics

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Functional Characteristics

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Applications Information

Enable/Shutdown

The MIC5335 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.

Input Capacitor

The MIC5335 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.

Output Capacitor

The MIC5335 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.

X7R/X5R dielectric-type ceramic capacitors are

recommended because of their temperature

performance. X7R-type capacitors change

capacitance by 15% over their operating temperature

range and are the most stable type of ceramic

capacitors on the market. 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.

No-Load Stability

Unlike many other voltage regulators, the MIC5335

will remain stable and in regulation with no load. This

is especially important in CMOS RAM keep-alive

applications.

Thermal Considerations

The MIC5335 is designed to provide 300mA of

continuous current for both outputs in a very small

package. Maximum ambient operating temperature

can be calculated based upon the output current and

the voltage drop across the part. Given that the input

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

OUT1

2.5V for V

OUT2

and the output current = 300mA. The

actual power dissipation of the regulator circuit can be

determined using the equation:

= (V

– V

OUT1

) I

OUT1

+ (V

– V

OUT2

) I

OUT2

+ V

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.

= (3.3V – 2.8V) × 300mA + (3.3V – 2.5V) × 300mA

= 0.39W

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:

⎟

⎠

⎞

⎜

⎝

⎛−

AJ(max)

D(max) θ

J(max)

= 125°C, the maximum junction temperature of

the die θ

thermal resistance = 100°C/W.

The table that follows shows junction-to-ambient

thermal resistance for the MIC5335 in the Thin MLF

package.

Package

Recommended

Minimum

Footprint

6-Pin 1.6 X1.6

Thin MLF™

100°C/W 2°C/W

Thermal Resistance

Substituting P

for 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 100°C/W.

The maximum power dissipation must not be

exceeded for proper operation.

For example, when operating the MIC5335-MFYML at

an input voltage of 3.3V and 300mA loads on each

output with a minimum footprint layout, the maximum

ambient operating temperature T

can be determined

as follows:

0.39W = (125°C – T

)/(100°C/W)

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May 2008 9 M9999-051508

=86°C

Therefore, a 2.8V/2.5V application with 300mA at

each output current can accept an ambient operating

temperature of 86°C in a 1.6mm x 1.6mm Thin MLF

package. For a full discussion of heat sinking and

thermal effects on voltage regulators, refer to the

“Regulator Thermals” subsection of Micrel’s Designing

with Low-Dropout Voltage Regulators handbook. This

information can be found on Micrel's website at:

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

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Package Information

6-Pin 1.6mm x 1.6mm Thin MLF

(MT)

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

The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for

its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.

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.