UCC38C45P - Unitrode

Manufacturer Part Number

UCC38C45P

Manufacturer

Texas Instruments

Introduction

The UCC38C45P is a performance-enhanced BiCMOS version with pin-for-pin compatibility to the industry standard UC384x series and UC384x series of PWM controllers.

Product Features and Performance

BiCMOS process technology

Low startup and operating current

High current totem pole output for driving a power MOSFET

High frequency operation up to 1MHz

Trimmed oscillator discharge current

Increased undervoltage lockout Hysteresis (1V)

PWM operation with voltage or current mode control

Soft start

Product Advantages

Reduced power consumption due to BiCMOS technology

Stable high-frequency operation for improved efficiency

Compatibility with a range of supply voltages

Versatile design suitable for various converter topologies

Enhanced system reliability due to built-in features like soft start

Key Technical Parameters

Voltage - Supply (Vcc/Vdd): 7.6V ~ 18V

Frequency - Switching: Up to 1MHz

Duty Cycle (Max): 48%

Operating Temperature: 0°C ~ 70°C (TJ)

Number of Outputs: 1

Output Phases: 1

Output Type: Transistor Driver

Function: Step-Up, Step-Up/Step-Down

Output Configuration: Positive

Topology: Boost, Flyback, Forward Converter

Quality and Safety Features

Built-in undervoltage lockout with hysteresis

High current drive output stage for robust power transistor handling

Compatibility

Through-hole mounting for easy integration into existing designs

8-DIP package compatible with standard PCB layouts

Application Areas

Switching power supplies

Power converters

Battery chargers

Power control circuits

Product Lifecycle

Obsolete product status

Consideration for system design changes or searching for alternative newer generation parts may be necessary

Several Key Reasons to Choose This Product

High switching frequencies reducing the size of components like inductors and capacitors

Can support various converter designs (boost, flyback, forward)

Enhanced performance due to BiCMOS technology

Low power consumption aids in energy-efficient design

Texas Instruments' reputation for reliable and quality semiconductor products