LT3570 - 1.5A Buck Converter, 1.5A Boost Converter and LDO Controller

Features
  • 2.5V to 36V Input Voltage Range
  • Programmable Switching Frequency
  • from 500kHz to 2.1MHz
  • Synchronizable Up to 2.75MHz
  • VOUT(MIN): 0.8V
  • Independent Soft-Start for Each Converter
  • Separate VIN Supplies for Each Converter
  • Duty Cycle Range: 0% to 90% at 1MHz
  • Available in 24-Lead (4mm × 4mm) QFN and
  • 20-Lead TSSOP Packages
Typical Application

Applications
  • Cable and Satellite Set-Top Boxes
  • Automotive Systems
  • Telecom Systems
  • “Dying Gasp” Systems
  • TFT LCD Displays
Packaging

Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LT3570EFE#PBFTSSOP-20E$4.36$3.05
LT3570EFE#TRPBFTSSOP-20E$3.11
LT3570EUF#PBF4x4 QFN-24E$4.22$2.95
LT3570EUF#TRPBF4x4 QFN-24E$3.01
LT3570IFE#PBFTSSOP-20I$5.02$3.51
LT3570IFE#TRPBFTSSOP-20I$3.57
LT3570IUF#PBF4x4 QFN-24I$4.84$3.39
LT3570IUF#TRPBF4x4 QFN-24I$3.45
Demo Boards
Part NumberDescriptionPrice
DC1106ALT3570EUF Demo Board | Buck + Boost + LDO Controller, 4V to 36Vin Buck with Vout1 = 3.3V@1A, 3.3V to 10Vin Boost with Vout2 = 12V@275mA, 100mA LDO$150.00
Datasheet
Reliability Data
Press Release
LTspice
Related Product
LT3570 - 1.5A Buck Converter, 1.5A Boost Converter and LDO Controller
LT3570 Package Drawing LT3570
R530 - Reliability Data
LT3570 - 采用 4mm x 4mm QFN 封装的 36V、1.5A 降压和 1.5A 升压2MHz 降压型 DC/DC 稳压器和 LDO 控制器
LT3570 Footprints and Symbols
LT3570 Demo Circuit - 1.5A Buck, 1.5A Boost & LDO Converters (5V to 3.3V @ 1A, 12V @ 400mA & 2.5V @ 100mA)