Datasheet4U Logo Datasheet4U.com

LTC3809-1 - Synchronous DC/DC Controller

General 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.

Key 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

Part Number Description Manufacturer
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

Other Datasheets by Linear Technology (now Analog Devices)

Part Number Description
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

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet 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.