LM2622 - 600kHz/1.3MHz Step-up PWM DC/DC Converter
Datasheet Packaging Samples & Pricing Eval. Boards Reliability Design Tools Application Notes Knowledge Base

Features
1.6A, 0.2, internal switch
Operating voltage as low as 2.0V
600kHz/1.3MHz pin selectable frequency operation
Over temperature protection
8-Lead MSOP package

General Description


The LM2622 is a step-up DC/DC converter with a 1.6A, 0.2 internal switch and pin selectable operating frequency. More...


Applications


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


ParametersValues
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 Volt
Input Max Voltage 12 Volt
Output Current 1500 mA
Adjustable Output Yes
Output Range 1.26V to 12V
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 LCD


Typical Performance


click for larger image


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LM2622

 
2.00 <=
V in Lower
 V
 
<=
V in Upper
 V
 
<= 12.00
V out 2.00 <=  V <= 18.00
I out    A <= 1.00
Ambient Temperature  °C <= 100


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Also Recommended
LM32242.4A Switch (Supports Higher Resolution, More Power, Or Larger TFT/LCD)
Additional Resources
Design Tools

Application Notes


Block Diagram


click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM2622 600kHz/1.3MHz Step-up PWM DC/DC Converter 464
Kbytes
13-May-04 Download
LM2622 600kHz/1.3MHz Step-up PWM DC/DC Converter (Japanese)
646 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
LM2622EVAL600kHz/1.3MHz Step-up PWM DC/DC ConverterFull productionN/A
 
Buy Now
1+$59.001-
8 weeksN/A
LM2622MM-ADJMINI SOIC8NOPB1260RoHS Download Full productionN/A
Samples
Buy Now
1K+$0.97reel
of
1000
ZXTT
S18B
16 weeks5000
LM2622MMX-ADJMINI SOIC8NOPB1260RoHS Download Full productionN/A
 
Buy Now
1K+$0.97reel
of
3500
ZXTT
S18B
14 weeks200000

General Description


The LM2622 is a step-up DC/DC converter with a 1.6A, 0.2 internal switch and pin selectable operating frequency. With the ability to convert 3.3V to multiple outputs of 8V, -8V, and 23V, the LM2622 is an ideal part for biasing TFT displays. The LM2622 can be operated at switching frequencies of 600kHz and 1.3MHz 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 LM2622 is available in a low profile 8-lead MSOP package.

Reliability Metrics


Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM2622MM-ADJABCD15003417500423400011201409060
LM2622MMX-ADJABCD15003417500423400011201409060

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.


Design Tools


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

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Application Notes


TitleSize in Kbytes Date Click link below to Download
AN-1237: Application Note 1237 RSDS™ Flat Panel Display Design Guidelines Part 2 141
Kbytes
14-May-03 Download
AN-1198: Application Note 1198 LM2622 Step-Up DC/DC Converter Evaluation Board 110
Kbytes
3-Apr-07 Download
AN-1250: Application Note 1250 Inductive Based Switching Regulator Circuits Provide High Efficiency White LED Drives 81
Kbytes
26-Sep-02 Download

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More Application Notes


TitleSize in Kbytes Date Click link below to Download
AN-1274: Application Note 1274 LM2623 Evaluation Board 636
Kbytes
21-Sep-05 Download
AN-1274 (Chinese): Application Note 1274 LM2623 Evaluation Board
208 Kbytes  
AN-1258: Application Note 1258 National`s LM2623 Boost Converter - A Simple Supply 64
Kbytes
2-May-04 Download
AN-1221: Application Note 1221 LM2623 Cookbook 35
Kbytes
2-May-04 Download
AN-1221 (Japanese): Application Note 1221 LM2623 Cookbook
60 Kbytes   Download

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[Information as of 8-Nov-2009]