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LM2787  Product Folder

Low Noise Regulated Switched Capacitor Voltage Inverter in micro SMD
Generic P/N 2787
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing		 Reliability
Metrics		 Application
Notes

Parametric Table Parametric Table
Temperature Min (deg C) -40 
Temperature Max (deg C) 105 
Multiple Output Capability No 
On/Off Pin Yes 
Error Flag No 
InputMin Voltage (Volt) 2.70 
InputMax Voltage (Volt) 5.50 
Output Current (mA) 10 
Output Voltage (Volt) - 
Adjustable Output Yes 
Switching Frequency (Hz) 250000 
Adj Switch Frequency No 
Sync Pin No 
Efficiency (%) 91 
Inverting Yes 
Step-Up No 
Step-Down No 
RegType Switched Capacitor 

Datasheet

TitleSize in KbytesDate
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LM2787 Low Noise Regulated Switched Capacitor Voltage Inverter in micro SMD 233 Kbytes 17-Apr-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
LM2787BPEVevaluation boardFull productionN/AN/A 
Buy Now		1+$64.701-
8-10 weeks10000
LM2787BPmicroSMD8StatusFull productionN/AN/ASamples1K+$0.95reel
of
250		XVS
I 8
5-7 weeks10000
LM2787BPXmicroSMD8StatusFull productionN/AN/A 1K+$0.95reel
of
3000		XVS
I 8
6-8 weeks10000
LM2787TPmicroSMD8StatusFull productionN/AN/ASamples
Buy Now		1K+$0.90reel
of
250		XVS
I 8
6-8 weeks10000
LM2787TPXmicroSMD8StatusFull productionN/AN/A 
Buy Now		1K+$0.90reel
of
3000		XVS
I 8
6-8 weeks10000

General Description

The LM2787 CMOS Negative Regulated Switched Capacitor Voltage Inverter delivers a very low noise adjustable output for an input voltage in the range of +2.7V to +5.5V. Four low cost capacitors are used in this circuit to provide up to 10mA of output current. The regulated output for the LM2787 is adjustable between -1.5V and -5.2V. The LM2787 operates at 260 kHz (typical) switching frequency to reduce output resistance and voltage ripple. With an operating current of only 400 µA (charge pump power efficiency greater than 90% with most loads) and 0.05 µA typical shutdown current, the LM2787 provides ideal performance for cellular phone power amplifier bias and other low current, low noise negative voltage needs. The device comes in small 8-Bump micro SMD and thin micro SMD packages.

Features

  • Inverts and regulates the input supply voltage
  • Small 8-Bump micro SMD and thin micro SMD packages
  • 91% typical charge pump power efficiency at 10mA
  • Low output ripple
  • Shutdown lowers Quiescent current to 0.05 µA (typical)

Applications

  • Wireless Communication Systems
  • Cellular Phone Power Amplifier Biasing
  • Interface Power Supplies
  • Handheld Instrumentation
  • Laptop Computers and PDA's

Reliability Metrics

Part Number Process Early Failure Rate - Rejects Sample Size (EFR) PPM * Rel. Rejects Device Hours Long Term Failure Rates (FITS) MTTF
LM2787BPABCD15001020000924003926125054
LM2787BPXABCD15001020000924003926125054
LM2787TPABCD15001020000924003926125054
LM2787TPXABCD15001020000924003926125054

For more information on Reliablitity Metrics, please click here.


Application Notes

TitleSize in KbytesDate
View Online
Download
Receive via Email
AN-1209: Application Note 1209 LM2787 Evaluation Board 33 Kbytes 25-Sep-02 View Online Download Receive via Email

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

[Information as of 15-Jan-2004]

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