ADI LTC3453EUF#TRPBF

DC DC 稳压器2.7V5.5V125mA

Overview

The LTC3453EUF is a synchronous buck-boost DC/DC converter optimized for driving up to 4 white LEDs at a combined current of up to 500mA from a single Li-Ion battery input. The regulator operates in either synchronous buck, synchronous boost, or buck-boost mode, depending on input voltage and LED maximum forward voltage. Optimum efficiency is achieved using a proprietary architecture that determines which LED requires the largest forward voltage drop at its programmed current, and regulates the common output rail for lowest dropout. Efficiency of 90% can be achieved over the entire usable range of a Li-Ion battery (2.7V to 4.2V).

A high constant operating frequency of 1MHz allows the use of a small external inductor. The LTC3453EUF is offered in a low profile (0.75mm) thermally enhanced 16-lead (4mm x 4mm) QFN package.

Features

Tape & Reel (TR) Package
Available in the 16-WQFN Exposed Pad package
Operating temperature of -40°C~85°C TA
Frequency of 1MHz
Supply voltage of 3.6V

Surface Mount Mounting Type

Applications

There are a lot of Linear Technology/Analog Devices
LTC3453EUF#TRPBF LED Driver ICs applications.

• Architectural lighting
• Street lighting
• Stage and Studio lighting
• Refrigeration lighting
• Portable lighting
• Gallery lighting
• Museum lighting
• High-end retail lighting
• Medical surgery lighting
• Replacement lamps