LM2853   
3A 550 kHz Synchronous SIMPLE SWITCHER® Buck Regulator 		Click link to Download

Features
•Input voltage range of 3.0V to 5.5V
•Factory EEPROM set output voltages from 0.8V to 3.3V in 100 mV increments
•Maximum load current of 3A
•Voltage Mode Control
•Internal type-three compensation
•Switching frequency of 550 kHz
•Low standby current of 12 µA
•Internal 40 m MOSFET switches
•Standard voltage options 0.8/1.0/1.2/1.5/1.8/2.5/3.0/3.3 volts
•Exposed pad TSSOP-14 package

Description

The LM2853 synchronous SIMPLE SWITCHER® buck regulator is a 550 kHz step-down switching voltage regulator capable of driving up to a 3A load with excellent line and load regulation. The LM2853 accepts an input voltage between 3.0V and 5.5V and delivers a customizable output voltage that is factory programmable from 0.8V to 3.3V in 100mV increments. Internal type-three compensation enables a low component count solution and greatly simplifies external component selection. The exposed-pad TSSOP-14 package enhances the thermal performance of the LM2853.

Applications
•Low voltage point of load regulation
•Local solution for FPGA/DSP/ASIC core power
•Broadband networking and communications infrastructure
WEBENCH Power Designer My Designs

LM2853
 
3.00 <=		 V in Lower
 V		  
<=		 V in Upper
 V		  
<= 5.50
V out 0.80 <=  V <= 3.30
I out    A <= 3.00
Ambient Temperature  °C <= 100


What are WEBENCH® tools?

Also Recommended
LM20123▲Full-Featured 3A, 1.5 MHz Switching Frequency
LM2852▲2A Version, 500kHz Or 1.5MHz Switching Frequency
LM2854▲4A Version, 500kHz Or 1MHz Switching Frequency



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                                              LM2853
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Also Recommended
LM20123▲Full-Featured 3A, 1.5 MHz Switching Frequency
LM2852▲2A Version, 500kHz Or 1.5MHz Switching Frequency
LM2854▲4A Version, 500kHz Or 1MHz Switching Frequency

Typical Application
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Block Diagram
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Typical Performance
*click for larger image


Paramaters / ValuesLM2853 LM20123 LM2852 LM2854
Output Current3000 mA 3000 mA 2000 mA 4000 mA
Input Min Voltage3 Volt 2.95 Volt 2.85 Volt 2.95 Volt
Input Max Voltage5.5 Volt 5.5 Volt 5.5 Volt 5.5 Volt
Output Min1.8, 1, 2.5, 1.2, 0.8, 3.3, 3, 1.5 Volt 0.8 Volt 1.8, 1, 2.5, 1.2, 0.8, 3.3, 1.5 Volt 0.8 Volt
Output Max1.8, 1, 2.5, 1.2, 0.8, 3.3, 3, 1.5 Volt 5 Volt 1.8, 1, 2.5, 1.2, 0.8, 3.3, 1.5 Volt 5 Volt
Frequency Min550 kHz Undefined kHz 500, 1500 kHz 500 kHz
Frequency Max550 kHz Undefined kHz 500, 1500 kHz 1000 kHz
Efficiency (peak)95 % 96 % 95 % 98 %
Integrated InductorNo No No No
Error FlagNo Yes No No
SoftStartYes Yes Yes Yes
Sync PinNo No No No
InvertingNo Undefined No No
FlybackNo Undefined No No
RegTypeSwitching Regulator Switching Regulator Switching Regulator Switching Regulator
Temperature Min-40 deg C -40 deg C -40 deg C -40 deg C
Temperature Max125 deg C 125 deg C 125 deg C 85 deg C
Adjustable OutputNo Yes No Yes
Adj Switch FrequencyNo No No No
PWM ModeVoltage Mode Control Current Mode Control Voltage Mode Control Voltage Mode Control
TopologySynchronous Buck Synchronous Buck Synchronous Buck Synchronous Buck
Special FeaturesInternal compensation, low standby current Undefined Internal compensation, low standby current Undefined
Step-DownYes Yes Yes Yes
Multiple Output CapabilityNo No No No
Output PowerUndefined Watt Undefined Watt Undefined Watt Undefined Watt
Output Voltage1.8, 1, 2.5, 1.2, 0.8, 3.3, 3, 1.5 Volt Undefined Volt 1.8, 1, 2.5, 1.2, 0.8, 3.3, 1.5 Volt Undefined Volt
Output Range1.8, 1, 2.5, 1.2, 0.8, 3.3, 3, 1.5 0.8V to 5.0V 0.8V to 3.3V Undefined
Switching FrequencyUndefined kHz 1500 kHz 500 kHz Undefined kHz
Feedback VoltageUndefined Volt 0.8 Volt Undefined Volt Undefined Volt
On/Off PinYes Yes Yes Yes
Regulator FamilySIMPLE SWITCHER LM20k SIMPLE SWITCHER SIMPLE SWITCHER
AEC Q-100 Automotive GradeUndefined Undefined Undefined Undefined
PowerWiseYes Yes Yes Yes
Synchronous RectificationYes Yes Yes Yes

Datasheets
TitleSizeDateOther
Language
LM2853 3A 550 kHz Synchronous SIMPLE SWITCHER® Buck Regulator616
Kbytes		25-Oct-06日本語


Featured Application Notes
TitleSizeDateOther
Language
AN-1513: Application Note 1513 LM2853 Evaluation Board530
Kbytes		30-Oct-06 
AN-1973: Application Note 1973 Benefits and Challenges of High-Frequency Regulators348
Kbytes		25-Jun-09 


More Application Notes
TitleSizeDateOther
Language
AN-1397: Application Note 1397 LM2852X Demonstration Board518
Kbytes		21-Sep-05 中文
AN-1343: Application Note 1343 LM2852 Evaluation Board (500kHz version)818
Kbytes		19-May-05 
AN-1880: Application Note 1880 LM2854 1MHz Buck Regulator Demo Board692
Kbytes		27-Aug-08 
AN-1786: Application Note 1786 LM2854 500 kHz Buck Regulator Evaluation Board760
Kbytes		2-Apr-08 

Part Number(s)
(NSID)		Top ViewAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LM2853MH-0.8/NOPB
LM2853MH-0.8

RoHS Status



TSSOP EXP PAD		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide183
$2.00 each at 1K+ pcsrail
of
94
LM2853MH-1.0/NOPB
LM2853MH-1.0

RoHS Status



TSSOP EXP PAD		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
ARROWWorldwide82
AVNET-EMWorldwide153
DIGIKEYWorldwide260
FUTUREWorldwide188
$2.00 each at 1K+ pcsrail
of
94
LM2853MH-1.2/NOPB
LM2853MH-1.2

RoHS Status



TSSOP EXP PAD		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
ARROWWorldwide176
AVNET-EMWorldwide188
DIGIKEYWorldwide406
FUTUREWorldwide146
NEWARKAmericas317
$2.00 each at 1K+ pcsrail
of
94
LM2853MH-1.5/NOPB
LM2853MH-1.5

RoHS Status



TSSOP EXP PAD		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
ARROWWorldwide172
AVNET-EMWorldwide188
DIGIKEYWorldwide39
FUTUREWorldwide280
$2.00 each at 1K+ pcsrail
of
94
LM2853MH-1.8/NOPB
LM2853MH-1.8

RoHS Status



TSSOP EXP PAD		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
ARROWWorldwide188
AVNET-EMWorldwide7
DIGIKEYWorldwide209
FUTUREWorldwide190
NEWARKAmericas208
$2.00 each at 1K+ pcsrail
of
94
LM2853MH-2.5/NOPB
LM2853MH-2.5

RoHS Status



TSSOP EXP PAD		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
ARROWWorldwide30
DIGIKEYWorldwide416
FUTUREWorldwide65
NEWARKAmericas200
$2.00 each at 1K+ pcsrail
of
94
LM2853MH-3.0/NOPB
LM2853MH-3.0

RoHS Status



TSSOP EXP PAD		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide163
FUTUREWorldwide94
$2.00 each at 1K+ pcsrail
of
94
LM2853MH-3.3/NOPB
LM2853MH-3.3

RoHS Status



TSSOP EXP PAD		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
ARROWWorldwide170
AVNET-EMWorldwide173
DIGIKEYWorldwide297
FUTUREWorldwide944
NEWARKAmericas119
$2.00 each at 1K+ pcsrail
of
94
LM2853MHX-0.8/NOPB
LM2853MHX-0.8

RoHS Status



TSSOP EXP PAD		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$2.00 each at 1K+ pcsreel
of
2500
LM2853MHX-1.0/NOPB
LM2853MHX-1.0

RoHS Status



TSSOP EXP PAD		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$2.00 each at 1K+ pcsreel
of
2500
LM2853MHX-1.2/NOPB
LM2853MHX-1.2

RoHS Status



TSSOP EXP PAD		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$2.00 each at 1K+ pcsreel
of
2500
LM2853MHX-1.5/NOPB
LM2853MHX-1.5

RoHS Status



TSSOP EXP PAD		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$2.00 each at 1K+ pcsreel
of
2500
LM2853MHX-1.8/NOPB
LM2853MHX-1.8

RoHS Status



TSSOP EXP PAD		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$2.00 each at 1K+ pcsreel
of
2500
LM2853MHX-2.5/NOPB
LM2853MHX-2.5

RoHS Status



TSSOP EXP PAD		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
ARROWWorldwide2500
DIGIKEYWorldwide0
$2.00 each at 1K+ pcsreel
of
2500
LM2853MHX-3.0/NOPB
LM2853MHX-3.0

RoHS Status



TSSOP EXP PAD		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$2.00 each at 1K+ pcsreel
of
2500
LM2853MHX-3.3/NOPB
LM2853MHX-3.3

RoHS Status



TSSOP EXP PAD		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$2.00 each at 1K+ pcsreel
of
2500

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.

Part Number(s)
(NSID)		DescriptionAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LM2853-1.2EVAL
3A 550 kHz Synchronous SIMPLE SWITCHER® Buck RegulatorFull production


 
DistributorRegionQty
DIGIKEYWorldwide0
NATIONALWorldwide2
$22.50 each1

Description:

LM2853 3A 550kHz Synchronous SIMPLE SWITCHER® BUCK Regulator

Features:

  • Input voltage range of 3.0V to 5.5V
  • Factory EEPROM set output voltages from 0.8V to 3.3V in 100 mV increments
  • Maximum load current of 3A
  • Voltage mode Control
  • Internal type-three compensation
  • Switching frequency of 550 kHz
  • Low standby current of 12 µA

Applications:

  • Low voltage point of load regulaton
  • Local solution for FPGA/DSP/ASIC core power
  • Broadband networking and communications infrastructure

Part Number(s)
(NSID)		DescriptionAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LM2853-1.8EVAL
3A 550 kHz Synchronous SIMPLE SWITCHER® Buck RegulatorFull production


 
DistributorRegionQty
DIGIKEYWorldwide0
NATIONALWorldwide13
$22.50 each1

Description:

LM2853 3A 550kHz Synchronous SIMPLE SWITCHER® BUCK Regulator

Features:

  • Input voltage range of 3.0V to 5.5V
  • Factory EEPROM set output voltages from 0.8V to 3.3V in 100 mV increments
  • Maximum load current of 3A
  • Voltage mode Control
  • Internal type-three compensation
  • Switching frequency of 550 kHz
  • Low standby current of 12 µA

Applications:

  • Low voltage point of load regulaton
  • Local solution for FPGA/DSP/ASIC core power
  • Broadband networking and communications infrastructure

Part Number(s)
(NSID)		DescriptionAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LM2853-3.3EVAL
3A 550 kHz Synchronous SIMPLE SWITCHER® Buck RegulatorFull production


 
DistributorRegionQty
DIGIKEYWorldwide0
NATIONALWorldwide62
$22.50 each1

Description:

LM2853 3A 550kHz Synchronous SIMPLE SWITCHER® BUCK Regulator

Features:

  • Input voltage range of 3.0V to 5.5V
  • Factory EEPROM set output voltages from 0.8V to 3.3V in 100 mV increments
  • Maximum load current of 3A
  • Voltage mode Control
  • Internal type-three compensation
  • Switching frequency of 550 kHz
  • Low standby current of 12 µA

Applications:

  • Low voltage point of load regulaton
  • Local solution for FPGA/DSP/ASIC core power
  • Broadband networking and communications infrastructure

Part Number(s)
(NSID)		Top ViewTypePinsMSL RatingPeak ReflowRoHS
Status		CAD SymbolsModelsPackage
Marking
Format
LM2853MH-0.8/NOPB
LM2853MH-0.8
TSSOP EXP PAD141
1		260
260		DetailDownloadN/A
NSUZXYTT
LM2853
-0.8
LM2853MH-1.0/NOPB
LM2853MH-1.0
TSSOP EXP PAD141
1		260
260		DetailDownloadN/A
NSUZXYTT
LM2853
-1.0
LM2853MH-1.2/NOPB
LM2853MH-1.2
TSSOP EXP PAD141
1		260
260		DetailDownloadN/A
NSUZXYTT
LM2853
-1.2
LM2853MH-1.5/NOPB
LM2853MH-1.5
TSSOP EXP PAD141
1		260
260		DetailDownloadN/A
NSUZXYTT
LM2853
-1.5
LM2853MH-1.8/NOPB
LM2853MH-1.8
TSSOP EXP PAD141
1		260
260		DetailDownloadN/A
NSUZXYTT
LM2853
-1.8
LM2853MH-2.5/NOPB
LM2853MH-2.5
TSSOP EXP PAD141
1		260
260		DetailDownloadN/A
NSUZXYTT
LM2853
-2.5
LM2853MH-3.0/NOPB
LM2853MH-3.0
TSSOP EXP PAD141
1		260
260		DetailDownloadN/A
NSUZXYTT
LM2853
-3.0
LM2853MH-3.3/NOPB
LM2853MH-3.3
TSSOP EXP PAD141
1		260
260		DetailDownloadN/A
NSUZXYTT
LM2853
-3.3
LM2853MHX-0.8/NOPB
LM2853MHX-0.8
TSSOP EXP PAD141
1		260
260		DetailDownloadN/A
NSUZXYTT
LM2853
-0.8
LM2853MHX-1.0/NOPB
LM2853MHX-1.0
TSSOP EXP PAD141
1		260
260		DetailDownloadN/A
NSUZXYTT
LM2853
-1.0
LM2853MHX-1.2/NOPB
LM2853MHX-1.2
TSSOP EXP PAD141
1		260
260		DetailDownloadN/A
NSUZXYTT
LM2853
-1.2
LM2853MHX-1.5/NOPB
LM2853MHX-1.5
TSSOP EXP PAD141
1		260
260		DetailDownloadN/A
NSUZXYTT
LM2853
-1.5
LM2853MHX-1.8/NOPB
LM2853MHX-1.8
TSSOP EXP PAD141
1		260
260		DetailDownloadN/A
NSUZXYTT
LM2853
-1.8
LM2853MHX-2.5/NOPB
LM2853MHX-2.5
TSSOP EXP PAD141
1		260
260		DetailDownloadN/A
NSUZXYTT
LM2853
-2.5
LM2853MHX-3.0/NOPB
LM2853MHX-3.0
TSSOP EXP PAD141
1		260
260		DetailDownloadN/A
NSUZXYTT
LM2853
-3.0
LM2853MHX-3.3/NOPB
LM2853MHX-3.3
TSSOP EXP PAD141
1		260
260		DetailDownloadN/A
NSUZXYTT
LM2853
-3.3

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.

Design Tools
TitleSizeDate
Article - Voltage Mode Compensation of Buck Regulators  

CAD Symbols and Models
Download LM2853 CAD Symbols
 Models
N/A

WEBENCH Power Designer My Designs

LM2853
 
3.00 <=		 V in Lower
 V		  
<=		 V in Upper
 V		  
<= 5.50
V out 0.80 <=  V <= 3.30
I out    A <= 3.00
Ambient Temperature  °C <= 100


What are WEBENCH® tools?

Reliability Metrics
Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM2853MH-3.0CS065238968520440200011249079519
LM2853MH-3.3CS065238968520440200011249079519
LM2853MHX-3.0CS065238968520440200011249079519
LM2853MHX-3.3CS065238968520440200011249079519

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.

MotionFire Development Platform on PowerWise Design TV
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MotionFire Development Platform on PowerWise Design TV
Date: 3/25/2009
Length: 0:30:00

[Information as of 9-Feb-2010]