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 Products > Analog - Regulators > SwitchedCapacitor Converters > LM2681

LM2681  Product Folder

Switched Capacitor Voltage Converter
Generic P/N 2681
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing		 Reliability
Metrics

WEBENCH Live Simulation!
LM2681 Webench™ Custom
Design/Analyze/Build It
 
2.5 <=		 V in Lower
V		  
<=		 V in Upper
V		  
<= 5.5
V out 5.0 <= V <= 11.0
I out   A <= 0.02
Ambient Temperature °C <= 100

What is Webench?
  
Parametric Table
Temperature Min (deg C) -40 
Temperature Max (deg C) 85 
Multiple Output Capability No 
On/Off Pin No 
Error Flag No 
InputMin Voltage (Volt) 2.50 
InputMax Voltage (Volt) 5.50 
Output Current (mA) 20 
Adjustable Output No 
Switching Frequency (Hz) 160000 
Adj Switch Frequency No 
Sync Pin No 
Efficiency (%) 90 
Inverting No 
Step-Up Yes 
Step-Down Yes 
RegType Switched Capacitor 
-

Datasheet

TitleSize in KbytesDate
View Online
Download
Receive via Email
LM2681 Switched Capacitor Voltage Converter 241 Kbytes 28-Jan-03 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
LM2681M6SOT-236StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.35reel
of
1000		S10A
ZXTT
16 weeks25000
LM2681M6XSOT-236StatusFull productionN/AN/A 
Buy Now		1K+$0.35reel
of
3000		S10A
ZXTT
16 weeks250000
LM2681 MDAUnpackaged DieFull productionN/AN/ASamples  tray
of
N/A		-
N/A0

General Description

The LM2681 CMOS charge-pump voltage converter operates as a voltage doubler for an input voltage in the range of +2.5V to +5.5V. Two low cost capacitors and a diode (needed during start-up) is used in this circuit to provide up to 20 mA of output current. The LM2681 can also work as a voltage divider to split a voltage in the range of +1.8V to +11V in half.

The LM2681 operates at 160 kHz oscillator frequency to reduce output resistance and voltage ripple. With an operating current of only 550 µA (operating efficiency greater than 90% with most loads) the LM2681 provides ideal performance for battery powered systems. The device is in SOT-23-6 package.

Features

  • Doubles or Splits Input Supply Voltage
  • SOT23-6 Package
  • 15 Typical Output Impedance
  • 90% Typical Conversion Efficiency at 20 mA

Applications

  • Cellular Phones
  • Pagers
  • PDAs
  • Operational Amplifier Power Suppliers
  • Interface Power Suppliers
  • Handheld Instruments

Reliability Metrics

Part Number Process Early Failure Rate - Rejects Sample Size (EFR) PPM * Rel. Rejects Device Hours Long Term Failure Rates (FITS) MTTF
LM2681 MDAABCD15001020000924003926125054
LM2681M6ABCD15001020000924003926125054
LM2681M6XABCD15001020000924003926125054

For more information on Reliablitity Metrics, please click here.


[Information as of 15-Jan-2004]

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