HOME HOME SELECT DESIGN BUY EXPLORE About Us Support My Profile Search

 Products > Analog - Regulators > SwitchingRegulators > LM2614

LM2614  Product Folder

400mA Sub-Miniature Adjustable DC-DC Converter Optimized for RF Power Amplifiers
  

See Also:		   
LM2619 - 500 MA OUTPUT CURRENT
Generic P/N 2614
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing		 Reliability
Metrics		 Application
Notes

Parametric Table Parametric Table
Temperature Min (deg C) -30 
Temperature Max (deg C) 85 
Multiple Output Capability No 
On/Off Pin Yes 
Error Flag No 
InputMin Voltage (Volt) 2.80 
InputMax Voltage (Volt) 5.50 
Output Current (mA) 400 
Output Voltage (Volt) - 
Adjustable Output Yes 
Output Range - 
Switching Frequency (Hz) 600000 
Adj Switch Frequency Yes 
Sync Pin Yes 
Efficiency (%) 96 
Flyback No 
Inverting No 
Step-Up No 
Step-Down Yes 
RegType Switching Regulator 

Datasheet

TitleSize in KbytesDate
View Online
Download
Receive via Email
LM2614 400mA Sub-Miniature Adjustable DC-DC Converter Optimized for RF Power Amplifiers 733 Kbytes 12-Aug-02 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
LM2614ATLmicroSMD10StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.40reel
of
250		XYTT
I S50A
7-9 weeks10000
LM2614BTLmicroSMD10StatusFull productionN/AN/ASamples
Buy Now 		1K+$1.20reel
of
250		XYTT
I S50B
6-8 weeks10000
LM2614ATLXmicroSMD10StatusFull productionN/AN/A 
Buy Now		1K+$1.40reel
of
3000		XYTT
I S50A
7-9 weeks10000
LM2614BTLXmicroSMD10StatusFull productionN/AN/A 
Buy Now		1K+$1.20reel
of
3000		XYTT
I S50B
6-8 weeks10000

General Description

The LM2614 DC-DC converter is optimized for powering RF power amplifiers (PAs) from a single Lithium-Ion cell. It steps down an input voltage of 2.8V to 5.5V to an output of 1.0V to 3.6V at up to 400mA (300mA for B grade). Output voltage is set using an analog input to VCON in the application circuit.

The device offers three modes for mobile phones and similar RF PA applications. Fixed-frequency PWM mode minimizes RF interference. A SYNC input allows synchronizing the switching frequency in a range of 500kHz to 1MHz. Low current hysteretic PFM mode reduces quiescent current to 160µA (typ.). Shutdown mode turns the device off and reduces battery consumption to 0.02µA (typ.).

Current limit and thermal shutdown features protect the device and system during fault conditions.

The LM2614 is available in a 10 bump micro SMD package. This packaging uses National's chip-scale micro SMD technology and offers the smallest possible size. A high switching frequency (600kHz) allows use of tiny surface-mount components.

The LM2614 can be dynamically controlled for output voltage changes from 1.0V to 3.6V in <30µs. The device features external compensation to tailor the response to a wide range of operating conditions.

Features

  • Sub-miniature 10-bump thin micro SMD package
  • Uses small ceramic capacitors
  • 5mV typ PWM mode output voltage ripple(COUT = 22µF)
  • Internal soft start
  • Current overload protection
  • Thermal Shutdown
  • External compensation

Key Specification

  • Operates from a single LiION cell (2.8V to 5.5V)
  • Adjustable output voltage (1.0V to 3.6V)
  • ±1% DC feedback voltage precision
  • 400mA maximum load capability(300mA for B grade)
  • 600µA typ PWM mode quiescent current
  • 0.02µA typ shutdown current
  • 600kHz PWM switching frequency
  • SYNC input for PWM mode frequency synchronization from 500kHz to 1MHz
  • High efficiency (96% typ at 3.9VIN, 3.6VOUT and 200mA) in PWM mode from internal synchronous rectification
  • 100% Maximum Duty Cycle for Lowest Dropout

Applications

  • Mobile Phones
  • Hand-Held Radios
  • RF PC Cards
  • Battery Powered RF Devices

Reliability Metrics

Part Number Process Early Failure Rate - Rejects Sample Size (EFR) PPM * Rel. Rejects Device Hours Long Term Failure Rates (FITS) MTTF
LM2614ATLABCD15001020000924003926125054
LM2614ATLXABCD15001020000924003926125054
LM2614BTLABCD15001020000924003926125054
LM2614BTLXABCD15001020000924003926125054

For more information on Reliablitity Metrics, please click here.


Application Notes

TitleSize in KbytesDate
View Online
Download
Receive via Email
AN-1112: Application Note 1112 Micro SMD Wafer Level Chip Scale Package 309 Kbytes 20-Oct-03 View Online Download Receive via Email
Application Note 1112 Micro SMD Wafer Level Chip Scale Package (JAPANESE)
 248 Kbytes   View Online Download Receive via Email
AN-1149: Application Note 1149 Layout Guidelines for Switching Power Supplies 113 Kbytes 26-Sep-02 View Online Download Receive via Email
AN-1246: Application Note 1246 Stresses in Wide Input DC-DC Converters 272 Kbytes 26-Sep-02 View Online Download Receive via Email
AN-556: Application Note 556 Introduction to Power Supplies 159 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]

Website Guide • About "Cookies" • National is QS 9000 Certified • Privacy/Security Statement • Contact Us/Feedback
Site Terms & Conditions of Use • Copyright 2003© National Semiconductor Corporation