MIC2821-4GMSYML TR Micrel Inc, MIC2821-4GMSYML TR Datasheet

MIC2821-4GMSYML TR

Manufacturer Part Number

MIC2821-4GMSYML TR

Description

Single DC/DC + 3 LDOs W/ Indep Enables

Manufacturer

Micrel Inc

Datasheet

1.MIC2821-4GMSYML_TR.pdf (17 pages)

Specifications of MIC2821-4GMSYML TR

Applications

Handheld/Mobile Devices

Voltage - Supply

2.7 V ~ 5.5 V

Operating Temperature

-40°C ~ 125°C

Mounting Type

Surface Mount

Package / Case

16-MLF®, QFN

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current - Supply

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

576-3084-2

Current page: 1 of 17
Download datasheet (461Kb)

General Description

The

management ICs, supporting four output voltage rails with

maximum efficiency. The four rails are generated by a

single 600mA DC/DC converter and three 300mA LDOs.

LDO1 and LDO2 are capable of operating at a low input

voltage down to 1.65V useful for post regulating the output

voltage of the DC-DC converter. The MIC2811 supports

the use of a bypass cap for improved noise performance

on LDO1 & LDO2 while the MIC2821 offers a separate

enable pin for LDO3.

Featuring an operating frequency of 2MHz, the DC to DC

converter uses small values of L and C to reduce board

space but still retains operating efficiencies up to 86% at

load currents up to 600mA.

The MIC2811/21 feature a µCap design, operating with

very small ceramic output capacitors and inductors for

stability, reducing required board space and component

cost and it is available in fixed output voltages in the 16-

pin 3mm × 3mm MLF

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

Applications

____________________________________________________________________________________________________________

Typical Application

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

April 2008

•

Mobile phones / PDAs

Portable media players

Mobile Television Receivers

MIC2811/21

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (

are

leadless package.

high

performance

power

Features

DC/DC Converter

LDO 1 & 2

LDO 3

408

•

) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

2MHz DC/DC converter and 3 LDOs

Tiny 16-pin 3mm x 3mm MLF

Thermal Shutdown Protection

±2% Output Voltage Accuracy on all outputs

2.7V to 5.5V input voltage range

Output current to 600mA

2MHz PWM operation

Up to 86% efficiency (1.2V output)

1.65V to 5.5V input voltage range

300mA output current

Fixed Output voltage as low as 0.8V

Low 142mV dropout

70dB PSRR at 1kHz

2.7V to 5.5V input voltage range

300mA output current

Fixed Output voltage as low as 1.0V

Current Limit Protection

Digital Power Management IC

2MHz, 600mA DC/DC with

Triple 300mA LDOs

MIC2811/2821

100

100 200 300 400 500 600

4.2V

OUTPUT CURRENT (mA)

1.2VOUT Efficiency

3.6V

L = 2.2µH

C = 2.2µF

package

M9999-042208-A

Related parts for MIC2821-4GMSYML TR

MIC2821-4GMSYML TR Summary of contents

Page 1

... DC-DC converter. The MIC2811 supports the use of a bypass cap for improved noise performance on LDO1 & LDO2 while the MIC2821 offers a separate enable pin for LDO3. Featuring an operating frequency of 2MHz, the ...

Page 2

... Micrel, Inc. Ordering Information Part Number MIC2811-4GJLYML MIC2811-4GMSYML MIC2821-4GJLYML MIC2821-4GMSYML Note: 1. Output Voltage of DC/DC, LDO1, LDO2, LDO3 respectively For additional voltage options, contact Micrel Marketing. Available fixed output voltage range for each output is as follows: min max DC/DC 1.0 2.0 LDO1 ...

Page 3

... Enable Input (DC/DC). Active High Input. Logic High = On; Logic Low = Off; Do not leave floating. EN2 Enable Input (LDO2). Active High Input. Logic High = On; Logic Low = Off; Do not leave floating. 3 MIC2811/2821 EN1 VIN1 BIAS LDO1 SGND VIN PGND LDO3 MIC2821 ® 16-Pin 3mm x 3mm MLF (ML) (Top View) M9999-042208-A ...

Page 4

... Conditions Rising input voltage during turn-on (DVIN & VIN Only 1.1*V (not switching); FB FBNOM LDO2 or LDO1 Only ( GND) EN EN3 LDO3 only ( GND / MIC2821 only) EN EN1 EN2 All 3 LDOs All Logic Low Logic High = 2.2µ OUTDC/DC OUT1 Conditions Fixed Output Voltages ...

Page 5

Micrel, Inc. Electrical Characteristics - LDO1 and LDO2 1V OUTMAX IN1 EN1 25° GND, bold values indicate –40°C< EN3 Parameter Output Voltage Accuracy ...

Page 6

Micrel, Inc. Typical Characteristics (DC/DC Converter) SW Frequency vs. Temperature 2 2 1.2V 2.4 OUT I = 300mA 2.3 OUT 2.2 2.1 2 1.9 1.8 1.7 1.6 TEMPERATURE (°C) DC/DC Enable Threshold vs. Supply ...

Page 7

Micrel, Inc. Typical Characteristics (LDO) MIC2811 LDO1 PSRR 90 80 10mA 150mA 40 300mA 100 1k 10k 100k 1E+1 1E+2 1E+3 1E+4 1E+5 1E+6 FREQUENCY (Hz) MIC2811 LDO1 Output Noise Spectral Density ...

Page 8

Micrel, Inc. Typical Characteristics (LDO cont.) LDO2 Dropout Voltage vs. Load Current 140 V = 5.5V IN 120 V = 1.2V OUT C = 2.2µF 100 100 150 200 250 300 OUTPUT CURRENT ...

Page 9

Micrel, Inc. Functional Characteristics (DC/DC Converter) April 2008 9 MIC2811/2821 M9999-042208-A ...

Page 10

Micrel, Inc. Functional Characteristics (LDO) April 2008 10 MIC2811/2821 M9999-042208-A ...

Page 11

... Micrel, Inc. Functional Diagram DVIN VIN 6 BIAS C BIAS Enable and EN Control Logic BIAS EN3 (MIC2821) BIAS VIN1 EN1 VIN2 EN2 SGND April 2008 Current Limit HSD PWM Anti-Shoot Control Through LSD N-Channel Current Limit Bias, UVLO, Soft Thermal Start Shutdown LDO ...

Page 12

... Size requirements • DC resistance (DCR) The MIC2811 and MIC2821 are designed for use with a 2.2µH inductor. Maximum current ratings of the inductor are generally given in two methods; permissible DC current and saturation current. Permissible DC current can be rated either for a 40°C temperature rise or a 10% to 20% loss in inductance ...

Page 13

Micrel, Inc. considerations and it reduces consumption of current for battery powered applications. Reduced current draw from a battery increases the devices operating time and is critical in hand held devices. There are two types of losses in switching converters; ...

Page 14

... DVIN 10 VIN C2 4.7µF/6.3V VIN1 12 VIN1 C3 4.7µF/6.3V C4 VIN2 4.7µF/6.3V 7 VIN2 EN1 16 EN2 R5 10K (FOR MIC2821 ONLY) C5 0.1µF (FOR MIC2811 ONLY) 14 MIC2811/2821 VO-LDO3 J10 9 LDO3 VO_LDO3 C9 2.2µF/6.3V VO-LDO2 J11 8 LDO2 VO_LDO2 C8 2.2µF/6.3V J12 11 LDO1 VO_LDO1 C7 2.2µ ...

Page 15

Micrel, Inc. Bill of Materials Item Part Number 06036D475KAT2A JMK107BJ475MA-T C1, C2, C3, C4, C10 C1608X5R0J475K GRM188R60J475KE19D C1608X5R0J225K 06036D225KAT2A C7, C8, C9 GRM188R60J225KE19D VJ0603G225KXYAT C1005X7R1A104K C5, C6 VJ0603Y104KXQCW1BC CDRH2D11HPNP L1 ME3220-222-ML R1 CRCW06030R00FRT1 R2 R3, R4, R5 CRCW06031002FRT1 U1 MIC2811/21 ...

Page 16

Micrel, Inc. PCB Layout Recommendations April 2008 Top Layer Bottom Layer 16 MIC2811/2821 M9999-042208-A ...

Page 17

Micrel, Inc. Package Information 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. ...

Related keywords

MIC2821-4GMSYML TR datasheet
MIC2821-4GMSYML TR data sheet
MIC2821-4GMSYML TR pdf datasheet
MIC2821-4GMSYML TR component
MIC2821-4GMSYML TR part
MIC2821-4GMSYML TR distributor
MIC2821-4GMSYML TR RoHS
MIC2821-4GMSYML TR datasheet download