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LM2703 Product Folder

Micropower Step-up DC/DC Converter with 350mA Peak Current Limit

Generic P/N 2703

Parametric Table

Temperature Min (deg C)	-40
Temperature Max (deg C)	85
Total LED Current (mA)	60
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

Title	Size in Kbytes	Date	View Online	Download	Receive via Email
LM2703 Micropower Step-up DC DC Converter with 350mA Peak Current Limit	307 Kbytes	9-Apr-03	View Online	Download	Receive via Email
LM2703 Micropower Step-up DC DC Converter with 350mA Peak Current Limit (JAPANESE)	271 Kbytes

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

Package Availability, Models, Samples & Pricing

Part Number

Package

Status

Models

Samples &
Electronic
Orders

Budgetary Pricing

Std
Pack
Size

Package
Marking

Type

Pins

MSL/Lead-Free Availability

Lead
Time

Qty

SPICE

IBIS

Qty

$US each

LM2703EV

evaluation board

Full production

N/A

$25.00

8 weeks

200

LM2703MF-ADJ

SOT-23

Status

Full production

N/A

1K+

$0.85

reel
of
1000

S48B
ZXTT

16 weeks

10000

LM2703MFX-ADJ

SOT-23

Status

Full production

N/A

1K+

$0.85

reel
of
3000

S48B
ZXTT

16 weeks

10000

The LM2703 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 LM2703 is ideal for LCD panels requiring low current and high efficiency as well as white LED applications for cellular phone back-lighting. The LM2703 can drive up to 4 white LEDs from a single Li-Ion battery.

Features

350mA, 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
LM2703MF-ADJ	ABCD150	0	10200	0	0	92400	39	26125054
LM2703MFX-ADJ	ABCD150	0	10200	0	0	92400	39	26125054

For more information on Reliablitity Metrics, please click here.

Application Notes

Title	Size in Kbytes	Date	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-1277: Application Note 1277 LM2703/LM2704 Evaluation Board	26 Kbytes	6-Mar-03	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]

LM2703 Product Folder

Datasheet

Package Availability, Models, Samples & Pricing

General Description

Features

Applications

Reliability Metrics

Application Notes