LM2733 - 0.6/1.6 MHz Boost Converters With 40V Internal FET Switch in SOT-23 from the PowerWise® Family

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Features
40V DMOS FET switch
1.6 MHz (“X”), 0.6 MHz (“Y”) switching frequency
Low RDS(ON) DMOS FET
Switch current up to 1A
Wide input voltage range (2.7V–14V)
Low shutdown current (<1 µA)
5-Lead SOT-23 package
Uses tiny capacitors and inductors
Cycle-by-cycle current limiting
Internally compensated

General Description


The LM2733 switching regulators are current-mode boost converters operating fixed frequency of 1.6 MHz (“X” option) and 600 kHz (“Y” option).

The use of SOT-23 package, made possible by the minimal power loss of the internal 1A switch, and use of small inductors and capacitors result in the industry's highest power density. More...


Applications


White LED Current Source
PDA’s and Palm-Top Computers
Digital Cameras
Portable Phones and Games
Local Boost Regulator
  Typical Application
click for larger image


Parametric Table     expand
Parametric Table    collapse
Output Range Vin to 40V
Switch Current 1 Amp
Input Min Voltage 2.7 Volt
Input Max Voltage 14 Volt
Frequency Max 600, 1600 kHz
Output Range Vin to 40V
Switch Current 1 Amp
Input Min Voltage 2.7 Volt
Input Max Voltage 14 Volt
Frequency Max 600, 1600 kHz
Output Min 3 Volt
Output Max 40 Volt
Sync Pin No
Adj Switch Frequency No
Frequency Min 600, 1600 kHz
On/Off Pin Yes
Error Flag No
PWM Mode Current
Topology Boost
Step-Up Yes
Inverting No
Flyback No
RegType Switching Regulator
Adjustable Output Yes
Temperature Min -40 deg C
Temperature Max 125 deg C
Automotive Selection Guide Yes
PowerWise Yes
View Using Catalog


Typical Performance


click for larger image


  Also Recommended
LM27311.5A / 22V Internal Switch. SOT-23 Package
LM27352.1A/ 24V Internal Switch In SOT23, LLP, And EMSOP Packages

Additional Resources


Design Tools (see below)

Application Notes (see below)


Block Diagram


click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM2733 0.6/1.6 MHz Boost Converters With 40V Internal FET Switch in SOT-23 406 Kbytes 8-Jul-07 View Online
Download
LM2733 0.6/1.6 MHz Boost Converters With 40V Internal FET Switch in SOT-23 (Japanese)
522 Kbytes   Download

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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders
Budgetary PricingStd
Pack
Size
Package
Marking
Format
TypePinsSpec.MSL
Rating
Peak
Reflow
RoHS
Report
CAD
Symbols
WeeksQtyQty$US each
LM2733XEVAL0.6/1.6 MHz Boost Converters With 40V Internal FET Switch in SOT-23Full productionN/A
 
Buy Now
1+$30.001-
8 weeksN/A
LM2733YEVAL0.6/1.6 MHz Boost Converters With 40V Internal FET Switch in SOT-23Full productionN/A
 
Buy Now
1+$30.001-
8 weeksN/A
LM2733XMFSOT-235STD
NOPB
1
1
260
260
RoHS Download Full productionN/A
Samples
Buy Now
1K+$1.08reel
of
1000
S52A
XTT
6 weeks2000
LM2733YMFSOT-235STD
NOPB
1
1
260
260
RoHS Download Full productionN/A
Samples
Buy Now
1K+$1.08reel
of
1000
S52B
XTT
6 weeks2500
LM2733XMFXSOT-235NOPB1260RoHS Download Full productionN/A
 
Buy Now
1K+$1.08reel
of
3000
S52A
XTT
6 weeks7500
LM2733YMFXSOT-235STD
NOPB
1
1
260
260
RoHS Download Full productionN/A
 
Buy Now
1K+$1.08reel
of
3000
S52B
XTT
6 weeks10000

General Description


The LM2733 switching regulators are current-mode boost converters operating fixed frequency of 1.6 MHz (“X” option) and 600 kHz (“Y” option).

The use of SOT-23 package, made possible by the minimal power loss of the internal 1A switch, and use of small inductors and capacitors result in the industry's highest power density. The 40V internal switch makes these solutions perfect for boosting to voltages of 16V or greater.

These parts have a logic-level shutdown pin that can be used to reduce quiescent current and extend battery life.

Protection is provided through cycle-by-cycle current limiting and thermal shutdown. Internal compensation simplifies design and reduces component count.

Switch Frequency

X Y
1.6 MHz 0.6 MHz

Reliability Metrics


Part Number Process EFR Reject EFR Sample Size PPM * LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM2733XMFABCD1500282800029740002843880620
LM2733XMFXABCD1500282800029740002843880620
LM2733YMFABCD1500282800029740002843880620
LM2733YMFXABCD1500282800029740002843880620

Note: The Early Failure Rates were calculated as point estimates. 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.


Design Tools


TitleSize in Kbytes Date Click link below to Download    
Your Walls Will Be Changing     View    

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Application Notes


TitleSize in Kbytes Date Click link below to Download
AN-1280: Application Note 1280 LM2731/LM2733 Evaluation Board 55 Kbytes 18-Apr-03 Download

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More Application Notes


TitleSize in Kbytes Date Click link below to Download
AN-1408: Application Note 1408 Designing Power Over Ethernet Using LM5070 and DP83865 1072 Kbytes 10-Jan-06 Download
AN-1408 (Chinese): Application Note 1408 Designing Power Over Ethernet Using LM5070 and DP83865
697 Kbytes  
AN-1837: Application Note 1837 LM2738 Evaluation Board 799 Kbytes 10-Apr-08 Download
AN-1658: Application Note 1658 LM2735 BOOST and SEPIC DC-DCRegulator 408 Kbytes 26-Jun-07 Download
AN-1658 (Japanese): Application Note 1658 LM2735 BOOST and SEPIC DC-DCRegulator
620 Kbytes   Download
AN-1658 (Chinese): Application Note 1658 LM2735 BOOST and SEPIC DC-DCRegulator
405 Kbytes  
AN-1350: Application Note 1350 LM2734 Evaluation Board 639 Kbytes 4-Feb-05 Download
AN-1418: Application Note 1418 LM2736 Evaluation Board 858 Kbytes 26-Oct-05 Download
AN-1418 (Chinese): Application Note 1418 LM2736 Evaluation Board
279 Kbytes  

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[Information as of 21-Nov-2008]