LM2705 Datasheet | Texas Instruments

Product Folder Sample & Buy Technical Documents Tools & Software Support & munity SNVS191F - NOVEMBER 2002 - REVISED OCTOBER 2016 LM2705 Micropower Step-Up DC-DC Converter With 150-m A Peak Current Limit 1 Features - 1 2.2-V to 7-V Input Range - 150-m A, 0.7-Ω Internal Switch - Adjustable Output Voltage up to 20 V - Input Undervoltage Lockout - 0.01-µA Shutdown Current - Uses Small Surface-Mount ponents - Small 5-Pin SOT-23 Package 2 Applications - LCD Bias Supplies - White-LED Backlighting - Handheld Devices - Digital Cameras - Portable Applications 3 Description The LM2705 is a micropower step-up DC-DC converter in a small 5-pin SOT-23 package. A current-limited, fixed-off-time control scheme conserves operating current, which results in high efficiency over a wide range of load conditions. The 21-V switch allows for output voltages as high as 20 V. The low 400-ns off-time permits the use of tiny, low-profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications. The LM2705 is ideal for LCD panels requiring low current and high efficiency as well as white-LED applications for cellular phone backlighting. The LM2705 device can drive up to 3 white LEDs from a single Li-Ion battery. The low peakinductor current of the LM2705 makes it ideal for USB applications. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) SOT-23...