LM27313 - 1.6 MHz Boost Converter With 30V Internal FET Switch in SOT-23

Datasheet	Packaging	Samples & Pricing	Reliability	Design Tools	Application Notes	Knowledge Base

Features

•	30V DMOS FET switch
•	1.6 MHz switching frequency
•	Low R_DS(ON) DMOS FET
•	Switch current up to 800 mA
•	Wide input voltage range (2.7V–14V)
•	Low shutdown current (<1 µA)
•	5-Lead SOT-23 package
•	Uses tiny capacitors and inductors
•	Cycle-by-cycle current limiting
•	Internally compensated

General Description

The LM27313 switching regulator is a current-mode boost converter with a fixed operating frequency of 1.6 MHz.

The use of the SOT-23 package, made possible by the minimal losses of the 800 mA switch, and small inductors and capacitors result in extremely high power density. More...

Applications

•	White LED Current Source
•	PDA’s and Palm-Top Computers
•	Digital Cameras
•	Portable Phones, Games and Media Players
•	GPS Devices

Typical Application

click for larger image

Parameters Values

Output Range 4 to 28V

Switch Current 1 Amp

Input Min Voltage 2.7 Volt

Input Max Voltage 14 Volt

Feedback Voltage 1.23 Volt

Frequency Max 1600 kHz

Output Min 4 Volt

Output Max 28 Volt

Efficiency (peak) 90 %

Sync Pin No

Adj Switch Frequency No

Frequency Min 1600 kHz

On/Off Pin Yes

Error Flag No

SoftStart No

Topology CV boost

Step-Up Yes

Inverting No

Flyback No

RegType Switching Regulator

Adjustable Output Yes

Output Power 2.5 Watt

Temperature Min -40 deg C

Temperature Max +125 deg C

Typical Performance

click for larger image

Additional Resources

Design Tools

Application Notes

Block Diagram

click for larger image

Datasheet

RoHS Compliance Information	Size in Kbytes	Date
LM27313 1.6 MHz Boost Converter With 30V Internal FET Switch in SOT-23	337 Kbytes	8-Jul-07	Download
LM27313 1.6 MHz Boost Converter With 30V Internal FET Switch in SOT-23 (Japanese)	327 Kbytes

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Package Availability, Models, Samples & Pricing

Part Number

Package

Factory Lead Time

Models

Samples &
Electronic
Orders

Budgetary Pricing

Std
Pack
Size

Package
Marking
Format

Type

Pins

Spec.

MSL
Rating

Peak
Reflow

RoHS
Report

CAD
Symbols

Weeks

Qty

$US each

LM27313XMF

SOT-23

NOPB
STD

1
1

260
260

RoHS

Download

Full production

N/A

1K+

$0.61

reel
of
1000

SRPB
XTT

6 weeks

5000

LM27313XMFX

SOT-23

NOPB
STD

1
1

260
260

RoHS

Download

Full production

N/A

1K+

$0.61

reel
of
3000

SRPB
XTT

6 weeks

7500

General Description

The LM27313 switching regulator is a current-mode boost converter with a fixed operating frequency of 1.6 MHz.

The use of the SOT-23 package, made possible by the minimal losses of the 800 mA switch, and small inductors and capacitors result in extremely high power density. The 30V internal switch makes these solutions perfect for boosting to voltages of 5V to 28V.

This part has a logic-level shutdown pin that can be used to reduce quiescent current and extend battery life.

Protection is provided through cycle-by-cycle current limiting and thermal shutdown. Internal compensation simplifies design and reduces component count.

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM27313XMF	ABCD150	0	34175	0	0	4234000	1	1201409060
LM27313XMFX	ABCD150	0	34175	0	0	4234000	1	1201409060

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

Title	Size in Kbytes	Date
Article - Your Walls Will Be Changing			View

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More Application Notes

Title	Size in Kbytes	Date
AN-1280: Application Note 1280 LM2731/LM2733 Evaluation Board	55 Kbytes	18-Apr-03	Download

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[Information as of 8-Nov-2009]