UC3844AN

$1.15

Description：IC REG CTRLR PWM CM 8DIP
Series：-
Mfr：Texas Instruments
Package：Tube

SKU:160e17d0c8e6 Category: DC DC Switching Controllers Brand: Texas Instruments

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Product introduction

UC3844AN is listed in the DC DC Switching Controllers range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC REG CTRLR PWM CM 8DIP. Review the specifications below when checking this part for your BOM.

DC DC Switching Controllers specifications for UC3844AN

Description：IC REG CTRLR PWM CM 8DIP
Series：-
Mfr：Texas Instruments
Package：Tube
Output Type：-
Function：-
Output Configuration：-
Topology：-
Number of Outputs：-
Output Phases：-
Voltage - Supply (Vcc/Vdd)：-
Frequency - Switching：-
Duty Cycle (Max)：-
Synchronous Rectifier：-
Clock Sync：-
Serial Interfaces：-
Control Features：-
Operating Temperature：0°C ~ 70°C (TA)
Mounting Type：Through Hole
Package / Case：8-DIP (0.300", 7.62mm)
Supplier Device Package：8-PDIP
Grade：-
Qualification：-

DC DC Switching Controllers datasheet and documents for UC3844AN

UC3844AN

DC DC Switching Controllers Overview

The UC3844AN is a high-performance fixed-frequency current mode controller designed for offline and DC-to-DC converter applications. It operates within an input voltage range of 12 V to 30 V, with a startup threshold of 16 V. The device features a maximum switching frequency of 500 kHz and supports topologies including Flyback, Forward, Step-Up, and Step-Down. It provides a 5 V reference output with a maximum output current of 1 A. The component is housed in a 14-pin SOIC package and functions reliably across a temperature range of 0°C to +70°C.

DC DC Switching Controllers Feature Summary

Current-mode PWM control architecture with integrated oscillator
High-current图腾柱 output stage for direct MOSFET drive
Built-in undervoltage lockout with hysteresis for stable startup
Latched pulse-width modulation for per-cycle current limiting

DC DC Switching Controllers Applications

Offline flyback power supplies
Forward converter designs
DC-to-DC step-up converters
DC-to-DC step-down converters

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'AN' indicates the Texas Instruments PDIP-16 variant rather than the surface-mount SOIC version. Confirm RoHS compliance status as manufacturing processes evolve. Ensure the supplier source is authorized to guarantee authenticity. Check for any recent lifecycle notifications regarding discontinuance or obsolescence before finalizing procurement plans.

DC DC Switching Controllers Selection Notes

Select this component when designing single-ended converters requiring duty cycles strictly limited to 50% or less to prevent transformer saturation. It is suitable for applications needing robust overcurrent protection via latched PWM. Consider the 14-pin through-hole package if board space allows for easier manual assembly or prototyping compared to surface-mount alternatives.

DC DC Switching Controllers Part Context

This part belongs to the UC384x family of current-mode controllers originally developed by Unitrode and now manufactured by Texas Instruments. The UC3844 variant specifically distinguishes itself from other family members by enforcing a maximum 50% duty cycle, making it ideal for isolated topologies where reset time is critical.