LT3473 - Micropower 1A Boost Converter with Schottky and Output Disconnect

The LT3473A includes two NPN transistors for generating intermediate bias voltages from the output and is offered in a 12-lead (4mm × 3mm) DFN package. The LT3473 does not include these NPNs and is offered in an 8-lead (3mm × 3mm) package.

The rugged 36V switch and output disconnect circuitry allow outputs up to 34V to be easily generated in a simple boost topology.

Features
  • Tiny Solution Size
  • Low Quiescent Current:
  • 150µA in Active Mode (VIN = 3.6V, VOUT = 15V, No Load) 1µA in Shutdown Mode
  • Internal 1A, 36V Switch
  • Integrated Schottky Diode
  • Integrated PNP Output Disconnect
  • Internal Reference Override Pin
  • PGOOD Pin
  • 25V at 80mA from 3.6V Input
  • Auxiliary NPNs for Intermediate Bias Voltages (LT3473A)
  • Automatic Burst Mode® Operation at Light Load
  • Constant Switching Frequency: 1.2MHz
  • Thermal Shutdown
  • Input Range: 2.2V to 16V
  • Low Profile (3mm × 3mm) DFN Package (LT3473)
  • Low Profile (4mm × 3mm) DFN Package (LT3473A)
Typical Application

Applications
  • OLED Bias
  • CCD Bias
Packaging

Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LT3473AEDE#PBF4x3 DFN-12E$2.93$2.05
LT3473AEDE#TRPBF4x3 DFN-12E$2.15
LT3473EDD#PBF3x3 DFN-8E$2.79$1.95
LT3473EDD#TRPBF3x3 DFN-8E$2.05
Demo Boards
Part NumberDescriptionPrice
DC883ALT3473EDD | Li-Ion to 25V Step-Up DC/DC Converter, 3V to 4.2Vin, 25Vout @ 80mA$100.00
Datasheet
Reliability Data
LT Journal
Press Release
LTspice
Related Product
LT3473/LT3473A - Micropower 1A Boost Converter with Schottky and Output Disconnect
LT3473/LT3473A - 内置肖特基二极管并具输出断接功能的微功率 1A 升压型转换器
LT3473 Package Drawing LT3473
R303 Reliability Data
Sep 2005 OLED Driver with Output Disconnect and Automatic Burst Mode Improves Standby Mode Efficiency
集成了肖特基二极管和输出断接电路的 1A、1.2MHz 微功率升压型转换器
LT3473 Footprints and Symbols
LT3473 Demo Circuit - µPower Boost Converter with Output Disconnect (3.6V to 25V @ 80mA)