UCC2809DTR-2 - Unitrode

Manufacturer Part Number

UCC2809DTR-2

Manufacturer

Texas Instruments

Introduction

Low-Power BiCMOS Current-Mode PWM Controller

Product Features and Performance

Low startup and operating current

Current mode operation

Bootstrap start-up source

High-frequency operation up to 1 MHz

Trimmed oscillator discharge current

70% maximum duty cycle

Soft start

Peak current limiting

Dual output drive stages in push-pull arrangement

Under-voltage lockout

Product Advantages

High efficiency through optimized gate drive

Suitable for a variety of converter topologies

Low power consumption

Precision high-frequency operation

Flexibility in design

Stable operation at variable temperatures

Key Technical Parameters

Output Isolation: Isolated

Internal Switch(s): No

Topology: Boost, Flyback, Forward

Voltage - Start Up: 10 V

Voltage - Supply (Vcc/Vdd): 8V ~ 19V

Duty Cycle: 70%

Frequency - Switching: 1MHz

Operating Temperature: -55°C ~ 150°C (TJ)

Package / Case: 8-SOIC

Mounting Type: Surface Mount

Base Product Number: UCC2809

Quality and Safety Features

Under-voltage lockout for safety

Temperature range ensuring operation in extreme conditions

Optimized design for reliable performance

Compatibility

Compatible with boost, flyback, and forward converter topologies

Suitable for use with external MOSFETs or bipolar transistors

Application Areas

Switching power supplies

DC-DC converters

Offline power converters

Telecommunication equipment

Industrial power systems

Product Lifecycle

Active product status

No indication of nearing discontinuation

Replacements or upgrades would likely maintain similar specifications and compatibility

Several Key Reasons to Choose This Product

High-frequency operation reducing size of passive components

Energy-efficient design ideal for green power solutions

Robust temperature performance ensures reliability across a range of conditions

Effective for reducing EMI due to current mode operation

High integration reduces component count and board space

Compatible with multiple topologies for design versatility

Readily available from a reputable manufacturer with extensive support systems