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LM2705  Product Folder

Micropower Step-up DC/DC Converter with 150mA Peak Current Limit
Generic P/N 2705
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing		 Reliability
Metrics

Parametric Table Parametric Table
Temperature Min (deg C) -40 
Temperature Max (deg C) 85 
Total LED Current (mA) 40 
LED Configuration Series 
Regulated LEDs () 4 
Current Matching Perfect 
Boost Type Inductive 
Boost Voltage Unregulated 
Efficiency (%) 80 
Supply Current (mA) .2350 
Switching Frequency (Hz) - 
Switching Type PFM 
InputMin Voltage (Volt) 2.20 
InputMax Voltage (Volt) 7 
OutputMax Voltage (Volt) 20 
PWM BrightCtrl Yes 
Analog-V BrightCtrl No 
AmbientLight Compensation No 
RGB-LED No 

Datasheet

TitleSize in KbytesDate
View Online
Download
Receive via Email
LM2705 Micropower Step-up DC DC Converter with 150mA Peak Current Limit 367 Kbytes 9-Apr-03 View Online Download Receive via Email
LM2705 Micropower Step-up DC DC Converter with 150mA Peak Current Limit (JAPANESE)
 464 Kbytes   View Online Download Receive via Email

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Package Availability, Models, Samples & Pricing

Part NumberPackageStatusModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
TypePinsMSL/Lead-Free AvailabilityLead
Time		QtySPICEIBISQty$US each
LM2705MF-ADJSOT-235StatusFull productionN/AN/A24 Hour Samples
Buy Now		1K+$0.82reel
of
1000		S59B
ZXTT
16 weeks10000
LM2705MFX-ADJSOT-235StatusFull productionN/AN/A 1K+$0.82reel
of
3000		S59B
ZXTT
16 weeks10000

General Description

The LM2705 is a micropower step-up DC/DC in a small 5-lead SOT-23 package. A current limited, fixed off-time control scheme conserves operating current resulting in high efficiency over a wide range of load conditions. The 21V switch allows for output voltages as high as 20V. The low 400ns off-time permits the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications. The LM2705 is ideal for LCD panels requiring low current and high efficiency as well as white LED applications for cellular phone back-lighting. The LM2705 can drive up to 3 white LEDs from a single Li-Ion battery. The low peak inductor current of the LM2705 makes it ideal for USB applications.

Features

  • 150mA, 0.7, internal switch
  • Uses small surface mount components
  • Adjustable output voltage up to 20V
  • 2.2V to 7V input range
  • Input undervoltage lockout
  • 0.01µA shutdown current
  • Small 5-Lead SOT-23 package

Applications

  • LCD Bias Supplies
  • White LED Back-Lighting
  • Handheld Devices
  • Digital Cameras
  • Portable Applications

Reliability Metrics

Part Number Process Early Failure Rate - Rejects Sample Size (EFR) PPM * Rel. Rejects Device Hours Long Term Failure Rates (FITS) MTTF
LM2705MF-ADJABCD15001020000924003926125054
LM2705MFX-ADJABCD15001020000924003926125054

For more information on Reliablitity Metrics, please click here.


[Information as of 15-Jan-2004]

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