LT LT8309HS5#TRMPBF

次级侧控制器4.5V ~ 40V300 µA

Overview

The LT8309HS5#TRMPBF is a secondary-side synchronous rectifier driver that replaces the output rectifier diode in a flyback topology. By replacing the diode with a N-channel MOSFET, applications are no longer restricted by the heat constraints of the output diode. The IC replicates the behavior of a diode by sensing the drain-to-source voltage to determine when the current becomes negative. The LT8309's low minimum on- and off-times help improve noise immunity.

The fast propagation delay of 26ns allows applications to operate in discontinuous conduction mode (DCM) and critical conduction mode (CrCM). The gate driver features a 0.8Ω pull-down device for fast turn-offs. The 40V VCC rating allows the part to be driven from the output voltage or the rectified drain voltage of the MOSFET. A low quiescent current of 400μA maximizes efficiency at low output currents.

Features

Tape & Reel (TR) Package
SOT-23-5 Thin, TSOT-23-5 package
Mounting type of Surface Mount

Surface Mount Mounting Type

Applications

There are a lot of Linear Technology/Analog Devices
LT8309HS5#TRMPBF Power Supply Control ICs applications.

• Projector electric hanger lift
• Multimedia classroom
• Multi-purposed meeting room
• Command and control center
• Smart home
• User-available push-button control panel
• Computer monitor
• Touch screen
• Remote control
• Projector