Hot-selling and scarce LTC3528EDDB-TRPBF 1A, 1MHz Synchronous Step-Up DC/DC Converters DFN8 spot stock

Product Descriptions

The LTC®3528/LTC3528B are synchronous, fi xed frequency  step-up DC/DC converters with output disconnect. High  effi ciency synchronous rectifi cation, in addition to a 700mV  start-up voltage and operation down to 500mV once  started, provides longer run-time for single or multiple  cell battery-powered products.

A switching frequency of 1MHz minimizes solution footprint by allowing the use of tiny, low profi le inductors and  ceramic capacitors. The current mode PWM is internally  compensated, simplifying the design process. The LTC3528  enters Burst Mode operation at light loads, while the  LTC3528B features continuous switching at light loads.  Anti-ringing circuitry reduces EMI by damping the inductor  in discontinuous mode. Additional features include a low  shutdown current, open-drain power good output, shortcircuit protection and thermal overload protection.

The LTC3528/LTC3528B are offered in an 8-lead 3mm ×  2mm × 0.75mm DFN package.

Product Features

■ Delivers 3.3V at 200mA from a Single Alkaline/NiMH Cell or 3.3V at 400mA from Two Cells

■ VIN Start-Up Voltage: 700mV

■ 1.6V to 5.25V VOUT Range

■ Up to 94% Effi ciency

■ Output Disconnect

■ 1MHz Fixed Frequency Operation

■ VIN > VOUT Operation

■ Integrated Soft-Start

■ Current Mode Control with Internal Compensation

■ Burst Mode® Operation with 12μA Quiescent Current (LTC3528)

■ Low Noise PWM Operation (LTC3528B)

■ Internal Synchronous Rectifi er

■ Logic Controlled Shutdown: <1μA

■ Anti-Ringing Control

■ Low Profi le (3mm × 2mm × 0.75mm) DFN Package

Product Applications

■ Medical Instruments

■ Flash-Based MP3 Players

■ Noise Canceling Headphones

■ Wireless Mice

■ Bluetooth Headsets

Product Specification

Product Photos

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