UC494J

$9.44

Description：IC REG LIN SWITCHING REG/CNTRLR
Series：-
Mfr：Texas Instruments
Package：Bulk

SKU:75e4b3d9c1ec Category: DC DC Switching Controllers Brand: Texas Instruments

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Product introduction

UC494J is listed in the DC DC Switching Controllers range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC REG LIN SWITCHING REG/CNTRLR. Review the specifications below when checking this part for your BOM.

DC DC Switching Controllers specifications for UC494J

Description：IC REG LIN SWITCHING REG/CNTRLR
Series：-
Mfr：Texas Instruments
Package：Bulk
Output Type：Transistor Driver
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Number of Outputs：2
Output Phases：2
Voltage - Supply (Vcc/Vdd)：7V ~ 40V
Frequency - Switching：1kHz ~ 300kHz
Duty Cycle (Max)：45%
Synchronous Rectifier：No
Clock Sync：Yes
Serial Interfaces：-
Control Features：Dead Time Control, Frequency Control
Operating Temperature：-40°C ~ 125°C (TA)
Mounting Type：Through Hole
Package / Case：16-CDIP (0.300", 7.62mm)
Supplier Device Package：16-CDIP
Grade：-
Qualification：-

DC DC Switching Controllers datasheet and documents for UC494J

UC494J

DC DC Switching Controllers Overview

The UC494J is a switching controller manufactured by Texas Instruments, designed for voltage-mode pulse width modulation applications. It supports multiple power supply topologies including boost, buck, flyback, forward, and push-pull configurations. The device features two output channels capable of driving external switches with an output current of 200 mA and a maximum output voltage of 40 V. It operates with a switching frequency up to 300 kHz and allows for duty cycle control up to 45%. The component is housed in a 16-CDIP package and functions within a temperature range of -55°C to +125°C.

DC DC Switching Controllers Feature Summary

Supports versatile power converter topologies such as push-pull, flyback, forward, buck, and boost
Provides dual output channels with high drive capability for external switching elements
Enables precise voltage-mode pulse width modulation control

DC DC Switching Controllers Applications

Industrial power supply systems
Telecommunications equipment power stages
Military-grade electronic systems requiring wide temperature operation

DC DC Switching Controllers Procurement Notes

Verify the specific suffix J indicates the ceramic DIP package variant when sourcing. Confirm RoHS compliance status as legacy military parts may differ from standard commercial versions. Ensure the supplier provides traceability documentation if required for defense or aerospace procurement contracts.

DC DC Switching Controllers Selection Notes

Select this component for designs requiring robust performance across extreme temperature ranges. Consider the 16-pin ceramic DIP package for through-hole mounting in rugged environments. Evaluate the 300 kHz switching frequency limit against system efficiency requirements.

DC DC Switching Controllers Part Context

This part belongs to the UC494 family of advanced regulating pulse width modulators. It serves as a military-grade alternative to commercial variants like the TL494, offering extended temperature capabilities and reliability suitable for harsh operating conditions.