LM2700 - 600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC Converter

Datasheet Packaging Samples & Pricing Eval. Boards Reliability Application Notes Knowledge Base

Features
•3.6A, 0.08, internal switch
•Operating input voltage range of 2.2V to 12V
•Input undervoltage protection
•Adjustable output voltage up to 17.5V
•600kHz/1.25MHz pin selectable frequency operation
•Over temperature protection
•Small 14-Lead TSSOP or LLP package

General Description

The LM2700 is a step-up DC/DC converter with a 3.6A, 80m internal switch and pin selectable operating frequency. More...


Applications

•LCD Bias Supplies
•Handheld Devices
•Portable Applications
•GSM/CDMA Phones
•Digital Cameras
  Typical Application
click for larger image


Parametric Table     expand
Parametric Table    collapse
Buffers 0
Output Current 2500 mA
Switching Frequency 600 kHz
Temperature Min -40 deg C
Temperature Max 125 deg C
Buffers 0
Multiple Output Capability Yes
On/Off Pin Yes
Error Flag No
Input Min Voltage 2.2 Volt
Input Max Voltage 12 Volt
Output Current 2500 mA
Adjustable Output Yes
Output Range 1.26V to 17.5V
Switching Frequency 600 kHz
Adj Switch Frequency Yes
Sync Pin No
Efficiency (peak) 90 %
Flyback Yes
Inverting No
Step-Up Yes
Step-Down No
RegType Switching Regulator
DisplayType FPD
View Using Catalog


Typical Performance

click for larger image


  WEBENCH Live Simulation!
LM2700 WEBENCH® Custom
Design/Analyze/Build It/Test It
 
2.20 <=		 V in Lower
V		  
<=		 V in Upper
V		  
<= 12.00
V out 1.26 <= V <= 17.50
I out   A <= 2.55
Ambient Temperature °C <= 100

What are WEBENCH® tools?


Also Recommended
LM273340V/1A SOT-23 1.6/0.6 MHz Boost Converter

Additional Resources

Application Notes (see below)


Block Diagram

click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM2700 600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC Converter 516 Kbytes 17-May-04 View Online
Download
LM2700 600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC Converter (Japanese)
 586 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
LM2700MT-ADJEV600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC ConverterFull productionN/A
 
Buy Now 		1+$61.001-
8 weeksN/A
LM2700LD-ADJLLP14NOPB3260RoHS Download Full productionN/A
Samples
Buy Now 		1K+$1.71reel
of
1000		NS
UZXYTT
S00001B
6 weeks2500
LM2700LDX-ADJLLP14NOPB3260RoHS Download Full productionN/A
 
Buy Now 		1K+$1.71reel
of
4500		NS
UZXYTT
S00001B
6 weeks5000
LM2700MT-ADJTSSOP14STD
NOPB		1
1		260
260		RoHS Download Full productionN/A
Samples
Buy Now 		1K+$1.71rail
of
94		NSZXYTT
2700MT
-ADJ
6 weeks500
LM2700MTX-ADJTSSOP14NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$1.71reel
of
2500		NSZXYTT
2700MT
-ADJ
8 weeks5000

General Description

The LM2700 is a step-up DC/DC converter with a 3.6A, 80m internal switch and pin selectable operating frequency. With the ability to produce 500mA at 8V from a single Lithium Ion battery, the LM2700 is an ideal part for biasing LCD displays. The LM2700 can be operated at switching frequencies of 600kHz and 1.25MHz allowing for easy filtering and low noise. An external compensation pin gives the user flexibility in setting frequency compensation, which makes possible the use of small, low ESR ceramic capacitors at the output. The LM2700 features continuous switching at light loads and operates with a switching quiescent current of 2.0mA at 600kHz and 3.0mA at 1.25MHz. The LM2700 is available in a low profile 14-lead TSSOP package or a 14-lead LLP package.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM * LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM2700LD-ADJABCD1500282800029740002843880620
LM2700LDX-ADJABCD1500282800029740002843880620
LM2700MT-ADJABCD1500282800029740002843880620
LM2700MTX-ADJABCD1500282800029740002843880620

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.


Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1308: Application Note 1308 LM2700 Evaluation Board 32 Kbytes 5-Jan-04 Download

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More Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1277: Application Note 1277 LM2703/LM2704 Evaluation Board 26 Kbytes 6-Mar-03 Download
AN-1250: Application Note 1250 Inductive Based Switching Regulator Circuits Provide High Efficiency White LED Drives 81 Kbytes 26-Sep-02 Download
AN-1237: Application Note 1237 RSDS™ Flat Panel Display Design Guidelines Part 2 141 Kbytes 14-May-03 Download

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[Information as of 7-Jan-2009]