LT3462A中文资料Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT数据手册ADI规格书

描述 Description

The LT™3462/LT3462A are general purpose fixed frequencycurrent mode inverting DC/DC converters. Bothdevices feature an integrated Schottky and a low VCESATswitch allowing a small converter footprint and lower partscost. The LT3462 switches at 1.2MHz while the LT3462Aswitches at 2.7MHz. These high speeds enable the use oftiny, low cost and low height capacitors and inductors.
The LT3462/LT3462A operate in a dual inductor invertingtopology that filters both the input and output currents.Very low output voltage ripple approaching 1mVP-P can beachieved when ceramic capacitors are used. Fixed frequencyswitching ensures a clean output free from lowfrequency noise typically present with charge pump solutions.The 40V switch allows a VIN to VOUT differential ofup to 38V for dual inductor topologies.
Both devices provide a low impedance 1.265V referenceoutput to supply the feedback resistor network. A groundreferenced, high impedance FB input allows high feedbackresistor values without compromising output accuracy.
The LT3462/LT3462A are available in a 6-lead SOT-23package.

特性 Features

·Integrated Schottky Rectifier
·Fixed Frequency 1.2MHz/2.7MHz Operation
·Very Low Noise: 1mVP-P Output Ripple
·Low VCESAT Switch: 270mV at 250mA
·±5V at 100mA from 5V Input
·�12V at 30mA from 3.3V Input
·Low Input Bias Current GND Based FB Input
·Low Impedance (40 Ohm) 1.265V Reference Output
·High Output Voltage: Up to �38V
·Wide Input Range: 2.5V to 16V
·Uses Tiny Surface Mount Components
·Low Shutdown Current: <10µA
·Low Profile (1mm) SOT-23 (ThinSOT™) Package

应用 Application

·CCD Bias
·LCD Bias
·GaAs FET Bias
·General Purpose Negative Voltage Supply

简介

LT3462A属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的LT3462A稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。