Datasheet Texas Instruments LM2703 — 数据表

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 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. 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
0.01ВµA Shutdown Current
Small 5-Lead SOT-23 Package APPLICATIONS LCD Bias Supplies
White LED Back-Lighting
Handheld Devices …