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LM2703

Texas Instruments
Part Number LM2703
Manufacturer Texas Instruments
Description Micropower Step-Up DC/DC Converter
Published May 5, 2020
Detailed Description LM2703 www.ti.com SNVS172F – FEBRUARY 2002 – REVISED MAY 2013 LM2703 Micropower Step-Up DC/DC Converter with 350mA Pe...
Datasheet PDF File LM2703 PDF File

LM2703
LM2703

Overview
LM2703 www.
ti.
com SNVS172F – FEBRUARY 2002 – REVISED MAY 2013 LM2703 Micropower Step-Up DC/DC Converter with 350mA Peak Current Limit Check for Samples: LM2703 FEATURES 1 •2 350mA, 0.
7Ω, Internal Switch • Uses Small Surface Mount Components • Adjustable Output Voltage up to 21V • 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 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 VIN = Li-Ion L 10 PH D 20V 15 mA CIN 4.
7 PF 51 VIN SW 4 LM2703 3 SHDN FB GND 2 R1 510k R2 33k COUT 1 PF CIN: Taiyo Yuden Ceramic COUT: Taiyo Yuden Ceramic L: Coilcraft DT1608C-103 or Murata LQY33PN100M02 (low profile) D: Motorola MBRM130LT3 Figure 1.
Typical 20V Application 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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2 PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas Instruments standard warranty.
Production processing does not necessarily include testing...


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