LT3462A Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT

The LT™3462/LT3462A are general purpose fixed frequency current mode inverting DC/DC converters. Both devices feature an integrated Schottky and a low VCESAT switch allowing a small converter footprint and lower parts cost. The LT3462 switches at 1.2MHz while the LT3462A switches at 2.7MHz. These high speeds enable the use of tiny, low cost and low height capacitors and inductors.

The LT3462/LT3462A operate in a dual inductor inverting topology that filters both the input and output currents. Very low output voltage ripple approaching 1mVP-P can be achieved when ceramic capacitors are used. Fixed frequency switching ensures a clean output free from low frequency noise typically present with charge pump solutions. The 40V switch allows a VIN to VOUT differential of up to 38V for dual inductor topologies.

Both devices provide a low impedance 1.265V reference output to supply the feedback resistor network. A ground referenced, high impedance FB input allows high feedback resistor values without compromising output accuracy.

The LT3462/LT3462A are available in a 6-lead SOT-23 package

产品特点 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
  • CCD Bias
  • LCD Bias
  • GaAs FET Bias
  • General Purpose Negative Voltage Supply
典型应用图
LT3462 典型应用
参数
LT3462 参数
LT3462A 订购信息和价格参考Package Variations and Pricing
器件型号 封装 引脚 温度 价格 (以 1 ~ 99 片为批量) 价格 (以 1000 片为批量) *
LT3462AES6 SOT 6 E $2.43 
LT3462AES6#PBF SOT 6 E $2.43 
LT3462AES6#TR SOT 6 E $2.43  $1.71 
LT3462AES6#TRM SOT 6 E $2.43  $1.73 
LT3462AES6#TRMPBF SOT 6 E $2.43  $1.73 
LT3462AES6#TRPBF SOT 6 E $2.43  $1.71 
LT3462ES6 SOT 6 E $2.43 
LT3462ES6#PBF SOT 6 E $2.43 
LT3462ES6#TR SOT 6 E $2.43  $1.71 
LT3462ES6#TRM SOT 6 E $2.43  $1.73 
LT3462ES6#TRMPBF SOT 6 E $2.43  $1.73 
LT3462ES6#TRPBF SOT 6 E $2.43  $1.71 
LT3462A 数据手册及相关资料下载
  1. 数据手册(英文) : LT3462/LT3462A - Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky in ThinSOT.PDF
  2. 可靠性数据 : R390 Reliability Data .PDF