LM2703MF-ADJ National Semiconductor, LM2703MF-ADJ Datasheet

LM2703MF-ADJ

Manufacturer Part Number

LM2703MF-ADJ

Description

DC/DC Converter IC

Manufacturer

National Semiconductor

Datasheets

1.LM2703MF-ADJ.pdf (12 pages)

2.LM2703MF-ADJ.pdf (11 pages)

3.LM2703MF-ADJ.pdf (11 pages)

Specifications of LM2703MF-ADJ

No. Of Outputs

Output Voltage

21V

No. Of Pins

Mounting Type

Surface Mount

Voltage Regulator Type

Boost Switching

Supply Voltage Min

2.2V

Operating Temperature Max

125Â°C

Peak Reflow Compatible (260 C)

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

LM2703MF-ADJ

Manufacturer:

NS/国半

Quantity:

20 000

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LM2703

Micropower Step-Up DC/DC Converter with 350mA Peak

Current Limit

General Description

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 22V

switch allows for output voltages as high as 21V. 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.

Typical Application Circuit

DS200306

FIGURE 1. Typical 20V Application

Features

n 350mA, 0.7Ω, internal switch

n Uses small surface mount components

n Adjustable output voltage up to 21V

n 2.2V to 7V input range

n Input undervoltage lockout

n 0.01µA shutdown current

n Small 5-Lead SOT-23 package

Applications

n LCD Bias Supplies

n White LED Back-Lighting

n Handheld Devices

n Digital Cameras

n Portable Applications

20030601

www.national.com

June 2006

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