LT3461 1.3MHz/3MHz Step-Up DC/DC Converters with Integrated Schottky in ThinSOT

The LT®3461/LT3461A are general purpose fixed frequency current mode step-up DC/DC converters. Both devices feature an integrated Schottky and a low VCESAT switch allowing a small converter footprint and lower parts cost. The LT3461 switches at 1.3MHz while the LT3461A switches at 3MHz. These high switching frequencies enable the use of tiny, low cost and low height capacitors and inductors. The constant switching frequency results in predictable output noise that is easy to filter, and the inductor based topology ensures an input free from switching noise typically present with charge pump solutions. The high voltage switch in the LT3461/LT3461A is rated at 40V making the device ideal for boost converters up to 38V.

The LT3461/LT3461A are available in a low profile (1mm) SOT-23 package

产品特点 Features
  • Integrated Schottky Rectifier
  • Fixed Frequency 1.3MHz/3MHz Operation
  • High Output Voltage: Up to 38V
  • Low VCESAT Switch: 260mV at 250mA
  • 12V at 70mA from 5V Input
  • 5V at 115mA from 3.3V Input
  • Wide Input Range: 2.5V to 16V
  • Uses Small Surface Mount Components
  • Low Shutdown Current: <1µA
  • Soft-Start
  • Low Profile (1mm) SOT-23 (ThinSOTTM) Package
参数
LT3461 参数
应用
  • Digital Cameras
  • CCD Bias Supply
  • XDSL Power Supply
  • TFT-LCD Bias Supply
  • Local 5V or 12V Supply
  • Medical Diagnostic Equipment
  • Battery Backup
典型应用图
LT3461 典型应用
LT3461 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) *
LT3461AES6 SOT 6 E $2.43 
LT3461AES6#PBF SOT 6 E $2.43 
LT3461AES6#TR SOT 6 E $2.43  $1.71 
LT3461AES6#TRM SOT 6 E $2.43  $1.73 
LT3461AES6#TRMPBF SOT 6 E $2.43  $1.73 
LT3461AES6#TRPBF SOT 6 E $2.43  $1.71 
LT3461ES6 SOT 6 E $2.43 
LT3461ES6#PBF SOT 6 E $2.43 
LT3461ES6#TR SOT 6 E $2.43  $1.71 
LT3461ES6#TRM SOT 6 E $2.43  $1.73 
LT3461ES6#TRMPBF SOT 6 E $2.43  $1.73 
LT3461ES6#TRPBF SOT 6 E $2.43  $1.71 
LT3461 数据手册及相关资料下载
  1. 数据手册(英文) : LT3461/LT3461A - 1.3MHz Step-Up DC/DC Converter in ThinSOT.PDF
  2. 设计要点 (英文) : DN316 - Ultralow Noise Switching Power Supplies Simplify EMI Compliance.PDF
  3. 可靠性数据 : R390 Reliability Data .PDF