Datasheet4U Logo Datasheet4U.com

LTC3809-1 - Synchronous DC/DC Controller

Description

The LTC®3809-1 is a synchronous step-down switching regulator controller that drives external complementary power MOSFETs using few external components.

The constant frequency current mode architecture with MOSFET VDS sensing eliminates the need for a current sense resistor and improves efficiency.

Features

  • n Programmable Output Voltage Tracking n No Current Sense Resistor Required n Constant Frequency Current Mode Operation for Excellent Line and Load Transient Response n Wide VIN Range: 2.75V to 9.8V n Wide VOUT Range: 0.6V to VIN n 0.6V ±1.5% Reference n Low Dropout Operation: 100% Duty Cycle n Selectable Burst Mode®/Pulse-Skipping/Forced Continuous Operation n Auxiliary Winding Regulation n Internal Soft-Start Circuitry n Selectable Maximum Peak Current Sense Threshold n Output Overvoltage Prot.

📥 Download Datasheet

📁 Similar Datasheet

  • LTC3807 - Synchronous Step-Down Controller (Linear)
  • LTC3808 - Synchronous DC/DC Controller (Linear)
  • LTC3816 - DC/DC Controller (Linear)
  • LTC3823 - Step-Down Synchronous DC/DC Controller (Linear)
  • LTC3829 - Single Output Synchronous Step-Down DC/DC Controller (Analog Devices)
  • LTC3852 - Synchronous Step-Down DC/DC Controller (Linear)
  • LTC3854 - Wide Vin Range Synchronous Step-Down DC/DC Controller (Linear Technology Corporation)
  • LTC3858-1 - Dual 2-Phase Synchronous Step-Down Controller (Linear Technology Corporation)
  • LTC3870-1 - PolyPhase Step-Down Slave Controller (Linear)
  • LTC3871 - Bidirectional PolyPhase Synchronous Buck or Boost Controller (Analog Devices)
Other Datasheets by Linear Technology
  • LTC3809 - Synchronous DC/DC Controller
  • LTC3801 - Micropower Constant Frequency Step-Down DC/DC Controllers
  • LTC3801B - Micropower Constant Frequency Step-Down DC/DC Controllers
  • LTC3802 - Dual 550kHz Synchronous 2-Phase DC/DC Controller
  • LTC3803 - Flyback DC/DC Controller
  • LTC3803-3 - Flyback DC/DC Controller
  • LTC3803-5 - Flyback DC/DC Controller
  • LTC3805 - Flyback DC/DC Controller

Full PDF Text Transcription

Click to expand full text
LTC3809-1 No RSENSETM, Low Input Voltage, Synchronous DC/DC Controller with Output Tracking FEATURES n Programmable Output Voltage Tracking n No Current Sense Resistor Required n Constant Frequency Current Mode Operation for Excellent Line and Load Transient Response n Wide VIN Range: 2.75V to 9.8V n Wide VOUT Range: 0.6V to VIN n 0.6V ±1.
Published: |