LT8309ES5#TRMPBF - Analog Devices Inc.

Manufacturer Part Number

LT8309ES5#TRMPBF

Manufacturer

Analog Devices

Introduction

The LT8309ES5#TRMPBF is a secondary-side power supply controller and monitor designed for use in isolated flyback converters.

Product Features and Performance

Integrated 100V, 370mA NPN power switch

Minimum off-time: 100ns

Adjustable cable drop compensation

Programmable soft start

No transformer third winding or opto-isolator required for regulation

Accurate enable pin threshold

Low quiescent current: 40µA in signal presence, 10.5µA in shutdown

Product Advantages

Improves overall power efficiency

Simple to design and implement

Reduces bill of materials by eliminating the need for additional regulation components

Increases system reliability due to fewer external components

Key Technical Parameters

Voltage - Supply: 4.5V ~ 40V

Current - Supply: 300 µA

Operating Temperature: -40°C ~ 125°C

Turn On Voltage: 2.8V (Typ)

Quality and Safety Features

ESD HBM (Human Body Model) 2kV protection

Over-temperature protection

Open collector fault reporting

UVLO (Under Voltage Lock Out) protection

Compatibility

Compatible with a range of isolated flyback converter designs

Application Areas

Offline converters

Industrial power supplies

Wall transformers

Battery-powered systems

Product Lifecycle

Current product status: Active

Not currently indicating discontinuation

No information on replacements or upgrades provided

Several Key Reasons to Choose This Product

High efficiency for energy saving

Wide input voltage range suitable for various applications

Can be used in a compact SOT-23-5 package saving PCB space

Ease of design reduces time to market

Enhanced safety features provide robust operation in different environmental conditions